Non-polluting Biomass Waste Processor, Components and Processes for Use by a Municipality, Industrial, Forestry and/or Agricultural Facility
20210031250 ยท 2021-02-04
Inventors
Cpc classification
B09C1/00
PERFORMING OPERATIONS; TRANSPORTING
F23G7/001
MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
F23G5/027
MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
B09B3/40
PERFORMING OPERATIONS; TRANSPORTING
F23G2209/12
MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
Y02W10/40
GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
F23G7/10
MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
Y02P30/20
GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
B09B3/45
PERFORMING OPERATIONS; TRANSPORTING
B09B5/00
PERFORMING OPERATIONS; TRANSPORTING
C10G3/00
CHEMISTRY; METALLURGY
International classification
B09B3/00
PERFORMING OPERATIONS; TRANSPORTING
F23G5/027
MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
F23G7/00
MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
Abstract
Implementations of a non-polluting biomass processor, and manufactured processor components are disclosed which at least partly address the local technical problems of a municipality, business, and/or organization, to generate non-polluting emissions, while generating at least one, often two or more, product outputs from biomass feedstocks input into the biomass processor. Examples of the operations of the biomass processor and various combinations of its manufactured processor components are disclosed. The product outputs may include carbon char and/or activated carbon, both of which may be used to increase water retention in climates with hot, dry summers and/or used to remediate water pollution in water reservoirs.
Claims
1. An apparatus, comprising: A1) a non-polluting biomass processor 1000 adapted to respond to receipt of a biomass feedstock 1010 to generate at least two product outputs 1050 to at least partly address at least one local technical problem 1030, with said product outputs generated with non-polluting atmospheric emission 1042 and with non-polluting water emission 1044; B1) wherein said biomass feedstock includes a version of a municipal waste biomass 1016; and C1) said local technical problem 1030 includes a waste treatment problem 1036.
2. The apparatus of claim 1, wherein said product outputs include at least two of a carbon char 1072, a bio-oil 1060, an activated carbon 1070, a syngas 1080 and a form of pyrogas (1252 and/or 1522).
3. The apparatus of claim 2, wherein said syngas 1080 has a particulate density that insures non-polluting use of said syngas 1080.
4. The apparatus of claim 1, wherein said supply problem includes at least one of a local biomass waste composition 1710, a local biomass waste seasonal variation 1712, and a local biomass waste daily variation 1714.
5. The apparatus of claim 1, wherein said local technical problem includes a production problem further including at least one of a fuel for at least one vehicle 1700, electricity for at least one public facility 1702, a purification of water pollution 1704, and a purification of air pollution 1706.
6. The apparatus of claim 1, wherein said local technical problem includes a waste treatment problem further including at least one of a landfill problem 1720, a sewage sludge problem 1722, and an incineration problem 1724.
7. The apparatus of claim 1, wherein said biomass feedstock further includes a version of at least one of an industrial waste biomass, a landfill biomass and a sludge biomass.
8. The apparatus of claim 1, wherein said biomass feedstock is output from a biomass conveyor and/or is output from a biomass pre-processor.
9. The apparatus of claim 1, wherein said non-polluting biomass processor comprises A9) a furnace 1100 adapted and/or configurable to operate at a first temperature 1110 in response to receiving a syngas 1080 to heat and generate a flue-gas at a second temperature; B9) a thermal assembly adapted and/or configurable to separately receive said flue-gas at said second temperature, a biomass feedstock 1010, and a steam at a first temperature range to generate said flue-gas at a third temperature, a pyrogas, a carbon char 1072 and said steam at a second temperature range; C9) an activated carbon reactor 1400 adapted and/or configurable to operate at or near said first temperature 1110 to receive said carbon char 1072 to generate said activated carbon 1070 and a second syngas 1442; D9) a boiler 1300 adapted and/or configurable to receive said flue-gas to generate said steam at or near said first temperature 1110; E9) an oil-gas separator adapted and/or configurable to receive said pyrogas to remove small particles to condense said raw biofuel oil and generate said third syngas 1080 without said small particles; and F9) a dust separator 1500 adapted and/or configurable to receive said pyrogas 1082 to remove large particles from said pyrogas to generate said second pyrogas without said large particles.
10. The apparatus of claim 1, further comprising at least one of A10) a biomass input pre-processor, B10) a furnace 1100, C10) an activated carbon reactor 1400, D10) a thermal assembly, E10) a boiler 1300, F10) a condenser, H10) a dust separator 1500, I10) each adapted and/or configurable to operate in said non-polluting biomass processor.
11. The apparatus of claim 10, further comprising at least one of A11) said biomass input pre-processor adapted and/or configurable to respond to receiving at least one biomass composition to generate a biomass feedstock 1010 of specific particle size range and specific humidity range; B11) said furnace 1100 adapted and/or configurable to operate at a first temperature 1110 in response to receiving a syngas 1080 to heat and generate a flue-gas at a second temperature; C11) said thermal assembly adapted and/or configurable to separately receive said flue-gas at said second temperature, said biomass feedstock 1010, and a steam at a first temperature 1110 range to generate said flue-gas at a third temperature, a pyrogas, a carbon char 1072 and said steam at a second temperature range; D11) said activated carbon reactor 1400 adapted and/or configurable to operate at or near said first temperature 1110 to receive said carbon char 1072 to generate an activated carbon 1070 and a second syngas 1080; E11) said boiler 1300 adapted and/or configurable to receive said flue-gas to generate said steam at or near said first temperature 1110; F11) said condenser adapted and/or configurable to receive said pyrogas to remove small particles to condense a raw biofuel oil and generate a third syngas 1080 without said small particles; G11) said sludge separator adapted and/or configurable to receive said raw biofuel oil to generate at least one of a biofuel oil and/or bio-oil; and H11) said dust separator 1500 adapted and/or configurable to receive said pyrogas 1082 to remove large particles from said pyrogas to generate a second pyrogas without said large particles.
12. The apparatus of claim 11, wherein said non-polluting biomass processor comprises A12) said furnace 1100 adapted and/or configurable to operate at said first temperature 1110 in response to receiving said syngas 1080 to heat and generate said flue-gas at said second temperature; B12) said thermal assembly adapted and/or configurable to separately receive said flue-gas at said second temperature, said biomass feedstock 1010, and said steam at said first temperature 1110 range to generate said flue-gas at said third temperature, said pyrogas, said carbon char 1072 and said steam at said second temperature range; C12) said activated carbon reactor 1400 adapted and/or configurable to operate at or near said first temperature 1110 to receive said carbon char 1072 to generate said activated carbon 1070 and said second syngas 1080; D12) said boiler 1300 adapted and/or configurable to receive said flue-gas to generate said steam at or near said first temperature 1110; E12) said condenser adapted and/or configurable to receive said pyrogas to remove small particles to condense said raw biofuel oil and generate said third syngas 1080 without said small particles; F12) said sludge separator adapted and/or configurable to receive said raw biofuel oil to generate said biofuel oil and/or said bio-oil; and G12) said dust separator 1500 adapted and/or configurable to receive said pyrogas 1082 to remove large particles from said pyrogas to generate said second pyrogas without said large particles.
13. The apparatus of claim 1, wherein said non-polluting atmospheric emission includes essentially no form of dioxin or ash.
14. The apparatus of claim 1, wherein at least one of said product output 1050 is a form of at least one of activated carbon 1070 and carbon char 1072; A14) wherein when a sufficient amount of said product output is put into a water reservoir, which is suffering pollution, the water reservoir will be at least N percent free of said pollution with M days; B14) wherein said N is not less than a member of the group consisting of 80, 90, 95, 96, 97, 98, 99, 99.5; C14) wherein said M is not more than a member of the group consisting of 7, 14, 21, 28, and 60; and D14) wherein said sufficient amount is not more one pound per W cubic yards, where W is a member of the group consisting of 4, 6, 8, 10, 12 and 14.
15. The apparatus of claim 1, wherein at least one said product output 1050 is a form of at least one of activated carbon 1070 and carbon char 1072; A15) wherein when a sufficient amount of said product output is put onto the top T centimeters of an acre of agricultural land, said agricultural land requires K per cent as much water to grow a crop as before; B15) wherein said T is not more than a member of the group consisting of 0[period]5, 1, 1[period]5, 2, 2[period]5, 5, 7[period]5, 10, 12[period]5, and 15; C15) wherein said K is not more than a member of the group consisting of 20, 40, 50, 60, and 80; and D15) wherein said crop is a member of at least one of the following: a grass, a tree, a vegetable, and a vine.
Description
BRIEF DESCRIPTION OF THE DRAWINGS
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DETAILED DESCRIPTION OF THE DRAWINGS
[0047] Often in developing a patent application, a summary of terms used in a disclosure is placed at the beginning of this section. However, to better serve the reader, a list of terms is placed after the description of
[0048]
[0049] The processor configuration 1020 is generated based upon the non-polluting biomass processor 1000 at least partly addressing at least one production problem 1032, at least one supply problem 1034, at least one waste treatment problem 1036 and/or at least one management problem 1038. The manufactured processor components 1050 feed the installation and maintenance of the biomass processor 1000 to address at least one management problem 1038. The biomass processor 1000, its manufactured components 1050, the processor configuration 1020 are adapted and configured to at least partly address the local technical problems 1030 faced by the users of the biomass processor. 1500. The manufactured processor components 1050 of the biomass processor 1000 may include one or more of the furnace 1100, the activated carbon reactor 1400, the thermal assembly 1200, the boiler 1300, the oil-gas separator 1600, and/or the dust separator 1500.
[0050] The local technical problems 1030 of
[0051] There are a number of terms through which the technical problems and their solution by the non-polluting biomass processor 1000, as well as side effects of the operation of the biomass processor. A number of these terms are defined for use herein:
[0052] A municipality may refer to any of the following, a village, town, township, suburb, rural district, neighborhood, city, county, utility district, regional administration, province, state, lake or river administration, a watershed administrative district, a region, nation, and/or
[0053] The term biomass refers to any organic matter that is available on a renewable or recurring basis, including municipal wastes, agricultural crops and trees, wood and wood wastes and residues, plants (including aquatic plants), grasses, residues, fibers, animal and fowl wastes, and other organic waste materials such sewage sludge capable of being thermodynamically processed to produce one or more of the following products: carbon char, activated carbon 1070, bio oil, syngas 1080 or energy. Biomass can be converted to bio-oil 1060 by the way of pyrolysis, liquefaction and gasification processes, which can also be further processed to obtain high-quality products with the help of upgrading and separation processes.
[0054] Bio-oil 1060 or Pyrolysis oil (sometimes described as biocrude) is a liquid fuel made from widely distributed biomass materials such as agricultural crops, animal wastes, algal biomass, municipal wastes, and agricultural and forestry by-products via thermo-chemical processes. Bio-oil 1060 contains a high level of oxygen and as such is not considered a hydrocarbon. As a new, clean and green bio-energy source, bio-oil 1060 is considered an attractive option to that of conventional hydrocarbon fuels in reducing environmental pollution.
[0055] A hydrocarbon refers to one or more organic compounds, consisting of hydrogen and carbon.
[0056] Syngas 1080 is a mixture of gas comprising approximately 85% of carbon monoxide and hydrogen, together with small amounts of methane, carbon dioxide other volatile organic compounds generated by the gasification of a carbon containing material having a heating value of which has an energy density less than one half of that of natural gas. The syngas 1080 so produced may contain some trace elements of impurities, which are removed from the syngas 1080 so that it can be used as a fuel in an integrated gasification combine cycle power generation configuration.
[0057] Pyrogas 1082 is a gas produced from the process of recovery of recyclable materials in an oxygen-free thermal decomposition environment, known as pyrolysis, in which a gas called pyrogas containing pyro-oil is produced by thermal decomposition of biomass waste comprising macromolecule organic compounds including rubber and plastics. The ratio and the chemical composition of the pyrogas 1082 depends on the type of feedstock materials sourced as well as the operational conditions of the pyrolysis process such as length of processing time, temperature, pressure and as in the described use of steam as a carrier of the pyro gas.
[0058] Flue-gas 1142 and 1242 refers to the gas exiting to the atmosphere via a flue, which tends to be a pipe or channel adapted to convey exhaust gases from a furnace 1100, fireplace, what feedstock is being consumed. The distinct reference numbers refer to two versions of the flue-gas that may differ in temperature and/or pressure.
[0059] Carbon char 1072 is a material produced by incomplete combustion of biomass and/or heavy petroleum products. Carbon char 1072 refers to substances in the combustion products ranging from slightly charred degradable biomass to highly condensed refractory soot.
[0060] Activated carbon 1070 is a solid form of carbon processed to have small-to-volume pores that increase the surface area available for absorption or chemical reaction due to its high degree of microporosity. By way of example, 1 gram of activated carbon 1070 may have a surface area of not less than 500 square meters (m.sup.2) as determined by gas adsorption. The width of the pores may range from 0.3 to several thousand nanometers (nm). Activated carbon 1070 has an activation level sufficient for useful application, which may be obtained through its high surface area. In some embodiments, further chemical treatment may further enhance its adsorption properties.
[0061] Pyrolysis refers to a thermochemical decomposition of organic material at elevated temperatures without the participation of oxygen. It involves the simultaneous change of chemical composition and physical phase, and is irreversible.
[0062] The Venturi effect is the reduction in fluid pressure that results when a fluid flows through a constricted section of pipe.
[0063] The Venturi effect is a jet effect; as with a funnel the velocity of the fluid increases as the cross-sectional area decreases, with the static pressure correspondingly decreasing. According to fluid dynamics, a fluid's velocity must increase as it passes through a constriction to satisfy the principle of continuity, while its pressure must decrease to satisfy the principle of conservation of mechanical energy. Any gain in kinetic energy a fluid may accrue due to its increased velocity through a constriction is negated by a drop in pressure.
[0064] A Venturi tube operates as follows: Fluid flows through a length of pipe of varying diameter. To avoid undue drag, a Venturi tube typically has an entry cone of 30 degrees and an exit cone of 5 degrees. To account for the assumption of an inviscid fluid a coefficient of discharge is often introduced, which generally has a value of 0.98.
[0065] A venturi scrubber is designed to effectively use the energy from the inlet gas stream to atomize the liquid being used to scrub the gas stream. This type of technology is a part of the group of air pollution controls collectively referred to as wet scrubbers. It has been known for decades that the venturi configuration can be used to remove particles from gas streams, a process known as scrubbing. A venturi scrubber consists of three sections: a converging section and, as the area decreases, gas velocity increases (in accordance with the Bernoulli equation). Liquid is introduced either at the throat or at the entrance to the converging section. The inlet gas, forced to move at extremely high velocities in the small throat section, shears the liquid from its walls, producing an enormous number of very tiny droplets. Particle and gas removal occur in the throat section as the inlet gas stream mixes with the fog of tiny liquid droplets. The inlet stream then exits through the diverging section, where it is forced to slow down. Venturis can be used to collect both particulate and gaseous pollutants, but they are more effective in removing particles than gaseous pollutants.
[0066] Current pyrolysis methods consist of two systems: pyrolysis in batch technologies and continuous pyrolysis technologies. For the pyrolysis in batch technologies, feedstock materials of various types such as organic biomass, used plastics and used tires are placed in a pyrolysis furnace, which is then heated to activate a pyrolyis reaction. Upon completion of the pyrolysis reaction, the furnace is cooled, depressurized and the pyro-products are removed. This prior art approach has the following disadvantages: [0067] The pyrolysis furnace must be subjected to a repetitive heating and cooling cycle for each batch, which limits the production capacity of the process and is an inefficient use of the energy required. [0068] That because of the loading and unloading it is difficult of make effective use of the pyrogases generated from the pyrolysis process. [0069] During the unloading process a release of dust and pyrogases results which is a hazard to the environment. [0070] Because of the above disadvantages the current preferred method of pyrolyzing feedstock is through the use of continuous pyrolysis methods. One of these methods is the continuous batch system which involves a series of reaction chambers connected together. The disadvantages of this system are: [0071] Each reaction furnace has to be cooled and repeatedly heated. [0072] Each reaction chamber must be unloaded and loaded repeatedly which incurs the disadvantages of a batch system referred to above. [0073] The use of a series of reactors makes for a bulky plant configuration. [0074] The individual operation of each furnace complicates the pyrolysis operation. [0075] The second method is a continuous pyrolysis system which does not incorporate the plurality of parallel pyrolysis furnaces. This system is a dry pyrolysis method which uses a dry inert gas to carry the resultant pyrogas out. The disadvantages of this system are: [0076] There is a danger of explosion in the furnace as a significant of combustible gases are generated during the high temperature process. [0077] Sulfurous components in the feedstock materials will be released, leaving a high sulfur content in the pyrolysis by products produced, thereby lowering the quality and merchantability of the resultant by products. [0078] There is not readily-available a cost effective inert gas in the pyrolysis industry having the capability of carrying the pyrogas out or a method of self-generating an inert gas having the capabilities required and it must be either specially produced or the supply of an inert gas has to be outsourced, thereby significantly increasing the operating costs of the system.
[0079] The local technical problems 1030 of
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[0096] to name just a few potential, frequently occurring causes. In disastrous situations, the plant component replacement may also involve an issue of plant component availability and its cost 1734, because many biomass processors are not mass produced, and their replacement components must often be ordered months in advance of their delivery date. [0099] Many municipalities and/or industries struggle to determine a plant unit size 1736, because of the above management problems. The inventors have solved this plant unit size problem, by specifying and developing four plant intake capacities. Once the plant intake capacity has been determined, this determines the primary components of the biomass processor 1000 as manufactured processor components 1050. From the specified plant intake capacity, the other management problems can be addressed in a consistent and coherent fashion, which can be readily communicated and controlled by the relevant municipal and/or industrial organizations. By way of example, consider four intake capacities of 500, 1000, 2000 and 4000 Kg. A small municipality or small industrial facility may operate a single biomass processor 1000 of one of these capacities. However, a larger municipality or local collective of several sites may all operate the same size, and stockpile replacement components, to insure rapid recovery from emergencies at a reasonable overhead.
[0100] Typically, wastes of a municipality may be categorized as green, paper, plastics, and wood wastes, as well as glass, metal and rock wastes. The green wastes may in some situations be further delineated into yard wastes and/or food wastes. As used herein, biomass wastes essentially include the green, paper, plastics and/or wood wastes, where the inclusion of one or more of the glass, metal and/or rock wastes is less than 3 percent by volume, and usually less than 1 percent. In the US, municipal wastes typically have metal waste of 7-8%, glass waste of about 5%, paper waste of about 38%, plastic waste of about 12% plus the green waste of about 23-24%.
[0101] Industry, whether manufacturing, agriculture or forest related, also faces very similar biomass waste problems. Today, industry is forced to pay for waste removal as well the fuel, electrical energy, and pollution control for their industrial needs.
[0102] include one or more of the following: a municipal waste biomass 1016, an industrial waste biomass 1017, a landfill biomass 1018, a sludge biomass 1019, an agricultural biomass, a forestry biomass, a petroleum biomass, a plastic waste and/or a rubber byproduct. [0104]
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[0131] Note that further alternatives include combinations of one or more of the above examples shown in
[0136] Note that in some situations, the activated carbon reactor 1400 and the furnace 1100 may be constructed separately and upon installation one or more of the situations shown in
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[0138] to create the steam 1232, which is distributed to the thermal assembly 1200 and the oil-gas separator 1600. [0141] The thermal assembly 1200 of
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[0144] operating at the first temperature 1110 also heats the activated carbon reactor 1400 to about the first temperature 1110. The activated carbon reactor 1400 may be adapted to receive, through the steam inlet 1420, the steam 1232 from the boiler 1300 at about the boiling point of water, and also to receive, through the carbon char 1072 inlet 1410, the carbon char 1072 from the thermal assembly 1200. [0146] The furnace 1100 of
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[0154] The first reactor 1910 may include a first outlet 1914 adapted to output a result 1996, which may be presented to the last inlet 1992 of the last reactor 1990.
[0155] The result 1996 may also be output from both the thermal chamber 1900 and the thermal assembly 1200 as the pyro-gas 1082 at a fourth temperature.
[0156] The last reactor 1990 may be adapted to respond to the result 1996 entering through the last inlet 1992, and the steam 1232 at the third temperature to emit carbon char 1072 through the last outlet 1994 adapted to the chamber feedstock outlet 1906 in the thermal chamber 1900, which in turn is adapted to align with the carbon char outlet 1260 of the thermal assembly 1200.
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[0171] outlet, a discharge outlet and a communicating opening between the reactors 2082. The tubular reaction chamber 2083 which functions as a reactor for carrying out the pyrolysis process and the method of this disclosure comprises a first reactor 2082 (also known as 1910), a second reactor 2082 (also known as 1920) and a third reactor 2082 (also known as 1990) installed one above the other which communicate with each other through the communicating openings. Each of the reactors 2082 encompasses an axial transporting device 2092 and each transporting device is connected to a driving device 2087 by a chain-wheel devices 2084 connected from the central driving device 2087 to the other axial transporting devices located in the upper and lower reactors. Each of the transporting devices 2092 has a central axis and comprises a plurality of spiral segments 2094 and a plurality of paddle segments 2095. The total length of the spiral segments 2094 and paddle segments 2095 are respectively calculated by summing the length of each segment along the direction of the central axis 2096. Generally, the total length of the paddle segments 2095 of each transporting structure 2092 ranges from 5% to 35% of the length of the transporting structure 2096.
[0180] passes through one or more proceeding zones 2094 and one or more blending zones 2095 in each reactor 2093, the material to be pyrolyzed passing from the first reactor 2093 to the second reactor 2093 and then the third or more reactors. The total length of one or more blending zones in each reactor may range from about 5% to 35%. The reactors 2082 may utilize high-temperature steam 1232 and a re-circulating heat source to crack dioxin and organic substances contained in the biomass feedstock 1010. The off gas mixture (referred to elsewhere in this disclosure as flue-gas 1242) produced in the reactors 2082 may be discharged into an off gas mixture treatment system including an oil-gas separator 1600 first shown in
[0181] Various implementations of the biomass processor 1000 support a method of operation of the thermal assembly 1200 for pyrolyzing biomass feedstock 1010 including used tires, shown through use of
[0182] A biomass feedstock inlet 1220 in the first reactor 1910 and carbon char outlet 1260 in the third or last reactor 1990 of three or more reactors 2082 installed in the thermal chamber 1900. Each of the transporting structures 2092 in each reactor 2082 has a central axis and may comprise a plurality of spiral structures 2094 starting from the opening charge and continuing through in a forward direction from the entry into the first reactor and into a second reactor and moving forward from the opening charge of the second reactor and continuing into a third or additional reactor. The spiral structures start at the opening charge and continue forward to the discharge of the third reactor. Each reactor 2082 containing a plurality of paddle structures 2095 disposed along the axis direction. Each of the transporting structures 2092 contained in each reactor 2082 may include paddle segments 2095 of substantially the same in width and length and each of spiral segments 2094 may be substantially identical in width and length. Often the total length of paddle segments ranges from 5% to 30% of the length of the transporting structure 2096 and a loading limit of feedstock to not more than 50% of the volume of the first reactor as the biomass feedstock 1010, the amount to be determined based by a commonly understood approximation upon the diameter and length of the first reactor 2096. In some embodiments, the augers are rotated by a gear motor 2087 having a continuous variable transmission with a speed sensors 2086. A gear-motor may be mounted on the second screw auger from which chain gears 2084 rotate the other 2 screw augers. Because the transporting structure 2092 of this disclosure comprises paddle segments 2095, the biomass feedstock 1010 is stirred and blended thereby permitting a thorough penetration of the feedstock material by the superheated steam 2085, which affects a more complete and homogeneous pyrolysis of the feedstock material.
[0183] The screw augers 2091 located in the reactors 2082 may be driven by any appropriate driving means 2087, in some embodiments, this is a reduction electric motor, while the rotational speed of the axial transporting structures 2092 can be adjusted depending on the size, composition and time required to optimize the decomposition of the biomass feedstock 1010 into the desired specification of the by-products, such as the pyro-gas 1082 and/or the carbon char 1072, based upon the processor configuration 1020 shown in
[0184] The injected superheated steam 2088 unclogs and displaces the volatiles 2089 contained in the biomass feedstock 1010 and the carbon char 1072 produced from the pyrolysis process and creates a thorough steam diffusion of the volatiles 2089 in the biomass feedstock 1010 and the carbon char 1072 in the reactors 2082. The presence of superheated steam 2088 reduces the pyrolysis temperature required below that of the current pyrolysis systems which do not use steam thereby increasing the energy efficiency of the biomass processor 1000. Further, the injected steam assists in reducing the vacuum created by pyrolysis systems which do not use steam, thereby assisting in eliminating the danger of air entering into the reactors 2082 and the possibility of a resulting explosion of the pyro-gas 1082 produced. To further assist in removing this danger, the invention incorporates a steam generation system, referred to in some embodiments as a boiler 1300 whereby the injected steam represents not more than 30%-35% by weight in relation to the weight of the biomass feedstock 1010.
[0185] In several embodiments, the superheated steam 1232 is injected into an opening (a steam inlet) in the third reactor 2082 at the temperature of 400 degrees C. to 450 degrees C. and then continuing through that reactor into the second and then the first reactors as shown in
[0186] Embodiments of the apparatus include the non-polluting bio-mass processor 1000 shown in biomass feedstock 1010 to be pyrolyzed. The second hopper valve 2 prevents air from entering the rectors 2082 from the second hopper valve 2 when unloading the carbon char 1072 at the carbon char outlet 1260 of the third reactor 2018 (also known as the last reactor 1990). The operation of the first hopper valve 2 is shown in
[0187] This disclosure provides a vacuum fan 18 in the first hopper valve 2 to continually extract any present outside air in the first hopper which may be sent to the post-combustion furnace 1100 for burning. This helps eliminate unpleasant odors emanating from the reactors 2082 while at the same time assisting in restricting air from entering the reactors 2082. This further assists in maintaining the reactor integrity and fan dilution.
[0188] The furnace 1100 may be equipped with an automatic burner 2019 for liquid fuel with a three stage regime of regulation which allows the production of heat to the reaction chamber 2082 when starting the pyrolysis process and as a source of ignition to support the after burning of residual gaseous by-product produced from pyrolysis, referred to as a flue-gas 1242. Some embodiments may have a flow rate of 75-80 litres of fuel per hour and a flow rate of 15-20 litres per hour relative to the 1,000 kgs/hr of tire pyrolysis rate. Ignition is produced in a small chamber before the main chamber as shown in
[0189] The temperature in the furnace 1100 may be within the range of 900 degrees C. to 1100 degrees C. and may be controlled by two regulators operating at 900 degrees C. to 1000 degrees C. and the other subsequently at 1000 degrees C. to 1100 degrees C. Both regulators may operate continuously and in cohesion with each other. The first may be an automatic regulator within a burner in the furnace 1100, which controls the amount of diesel fuel, syn fuel 1080, or gaseous fuel 1150 consumed when starting the pyrolysis process and secondly by an automatic control for firing through using a pair of bypass valves controlling the supply of gaseous by-products, such as syngas 1180, or pyro-gas 1082 from the oil-gas separator 1600. When in a continuous operation mode, the more of the gaseous material that passes, the less steam in the system and the higher the temperature in the furnace 1100 and vice versa. A fan may supply air 1132 to the combustion chamber of the furnace 1100. The fan may supply syngas 1080 including steam at a fourth temperature that come from the oil-gas separator 1600 with a temperature slightly above 100 degrees C. The volume of these may be controlled by a regulator.
[0190] The thermal assembly 1200 disclosure is focused on including 3 tubular reaction chambers labeled 1910, 1920 and 1990 in
[0191] Many embodiments of the biomass processor 1000 include a screw conveyor with an external cooling jacket which cools the temperature of the carbon char 1072 at the carbon char outlet 1260 of the thermal assembly 1200 from approximately 400 degrees C. to approximately 50 degrees C. This apparatus may be cooled by water from a cooling tower, which may circulate the water in an outer jacket opposite the direction of the screw auger.
[0192] The biomass processor 1000 may include a boiler 1300 adapted and configured to produce a sufficient supply of steam 1232 for the efficient thermal decomposition of the biomass feedstock 1010 in the reactors 2082 of the thermal assembly 1200 and stable condensation of syngas 1080 in the thermal assembly 1200. In some embodiments of the bio-mass processor 1000 the steam 1232 may be generated at temperatures up to 150 degrees C. and at a pressure of 5 bars from water 1322 diverted from the oil-gas separator 1600, which condenses the exhaust steam contained in flue gas 1142 after the off-gas burning in the furnace 1100 which is firstly generated from the reactors 2082 of the thermal assembly 1200 together with the residual steam from the oil-gas separator 1600 thereby collecting all water in the steam and reusing it to produce steam again. The volume of steam and the pressure to be generated required is commonly known to those familiar in the art.
[0193] The apparatus may include a fan-exhauster which draws furnace gases from the reaction 200 degrees C. to 250 degrees C. The size of the boiler 1300 may be determined by special calculations performed by those familiar in the art and known to the industry. In one embodiment, a level sensor permits adjustment of the amount of water 1322 entering the boiler 1300, so as to maintain the required amount of water in the installation. From the boiler 1300, steam 1232 may be sent to a tubular super heater 2085 contained in the thermal assembly 1200 to heat the steam 1232 to temperature of 400 degrees C. to 450 degrees C., which is then fed directly into the reactors 2082 for contact with the biomass feedstock 1010 to be pyrolyzed in a volume which is determined and controlled by one or more temperature sensors. Together with pyro-gas 1082, the superheated steam 1272 then goes to the oil-gas separator 1600 where the pyro-gas 1082 is sent for evaporative spray cooling by water and combined as a residue with the steam for burning in the furnace 1100.
[0194] A water flow rate of 200 to 250 kg/hr for a 1,000 kgs/hr used tire feedstock may be optimal in some implementations. A slight discharge of excess steam in the scrubber oil-gas separator 1600 permits the adjustment of the amount of vapor in the condensation process and the temperature of the combined-cycle steam with after-burning of the off-gas in the furnace 1100. The water in the steam coming from the scrubber may have an increased pH 8.5 (alkaline). In some embodiments, the boiler 1300 may be constructed of corrosion-resistant stainless steel. In addition, the direct gas pipes are of the type that provide for open access as illustrated in
[0195]
[0196] As used herein water reservoirs include but not limited to manmade reservoirs, ponds, lakes, and/or water retention facilities.
[0197] Regarding the product output 1050 from at least one of the non-polluting biomass processors 1000 disclosed above: in particular the product output as a form of activated carbon 1070 and/or carbon char 1072.
[0198] An experiment has been performed in the state of California using carbon char 1072 to remove water pollution from a lake of approximately 85 acres (about 35 hectares) with a depth of 30 feet (9.15 meters). At the start of the experiment, visibility into the water was limited to 2 inches (5 centimeters) due to algae plumes and plant growths. The lake was treated with approximately 6,000 pounds (2720 kilograms) of carbon char 1072. After about 6 weeks, the water visibility had improved to at least 8 feet (2.4 meters). Carbon char also removed the
[0199] Phosphorus (P) pollution was analyzed in two forms: First, non-soluble P in the lake water was estimated to have 27 milli-grams (mg) per liter, at the experiment's start. Carbon char 1072 absorbed about 99.9% of the non-soluble P, removing it from the lake water, at the experiment's end. Second, soluble P in the lake water was estimated to have 27 mg per liter, at the start. Carbon char 1072 absorbed about 99.8% of the non-soluble P, removing it from the lake water, at the end.
[0200] The lake water had a concentration of Phosphate (sometimes denoted as PO4-P) of about 284 mg per liter at the start. Carbon char 1072 removed about 86.6% of the Phosphate.
[0201] The lake water had a concentration of ammonia (sometimes denoted as N), of 1.1 mg per liter, at the start. Carbon char 1072 removed about 89.7% of the ammonia.
[0202] The lake water had a concentration of Nitrate (sometimes denoted as NO3-N) of about 52 mg per liter, at the start. Carbon char 1072 removed 64.3% of the nitrate.
[0203] Carbon char also removed turbidity and solids from the lake water. The turbidity was estimated as 68 NTU at the start. Carbon char 1072 removed about 99.9% of the turbidity by the end. Solids suspended in the lake water was estimated as 506 mg per liter. Carbon char 1072 removed about 80.2% of solids from the lake water by the end.
[0204] The volume of the lake is estimated as follows: There are 43,560 square feet in an acre. Assuming average depth of the lake is 30 feet, the volume of the lake is estimated as 43,560*30=1,306,800 cubic feet. There are 27 cubic feet in each cubic yard, so the volume of the lake is about 48,370 cubic yards. The 6,000 pounds divided by the 48,370 cubic yards is about 1 pound of carbon char 1072 per 8.1 cubic yards of polluted water. Put in metric units, 454 grams per 6.2 cubic meters or 1 kilogram carbon char 1072 per 2.2*6.2 m.sup.3=13.6 m.sup.3 of water.
[0205] A second experiment involved a golf course in California and its irrigation water needs. The golf course is about 80 acres (about 32.4 hectares). It usually requires about 270,000 cubic meters (m.sup.3) of water. Carbon char 1072 was applied once to a portion of the golf course, with the remainder of the golf course used as a control population. At the experiment's end, if the whole golf course had been covered, there would have been a 50% water savings, or roughly 135,000 m.sup.3 of water.
[0206] The total amount of carbon char 1072 required to cover the golf course is estimated as follows: The cost of the carbon char (at the time of the experiment) was $240,000 (US $). The estimated cost of purchasing the carbon char was $275 per cubic yard. Therefore, the estimated amount of carbon char to top dress the golf course is $240,000/($275/cubic yard), which is about 1,745.45 cubic yards or about 1334.5 cubic meters.