Patent classifications
C10B57/12
Process for preparation of hydrocarbon fuel from waste rubber
The present disclosure provides a process for preparing a hydrocarbon fuel from waste rubber. The process involves admixing, in a reaction vessel, at least one fluid medium with the waste rubber to obtain a slurry; wherein the concentration of the waste rubber in the slurry ranges from 45% to 70%. A reactor is charged with the slurry and a predetermined amount of at least one catalyst composition to obtain a mixture, followed by introduction of hydrogen to the reactor to attain a predetermined pressure and heating the mixture at a predetermined temperature, to attain an autogenously generated pressure, and for a predetermined time period to obtain a reaction mass comprising the hydrocarbon fuel. This reaction mass comprising the hydrocarbon fuel is then cooled to obtain a cooled reaction mass. The hydrocarbon fuel is then separated from the cooled reaction mass.
METHOD FOR PREPARING HYDROGEN-RICH FUEL GAS BY CATALYZING BIOMASS TAR CRACKING USING ALUMINUM SMELTING WASTE RESIDUES
Disclosed is a method for preparing hydrogen-rich fuel gas, including adding aluminum smelting waste residues into medium strong acid and soaking for 2-4 h, filtering and baking an obtained precipitate at 300-400? C. for 3-6 h to obtain pre-treated aluminum smelting waste residues; adding the waste residues into weak acid and performing ultrasonic treatment, performing centrifugal separation on an aluminum ash solution, baking for 3-6 h at a constant temperature of 400-500? C. in an air atmosphere, and naturally cooling to room temperature to obtain a cracking catalyst; uniformly mixing the cracking catalyst and biomass with a mass ratio of 1:1 and adding into a first-stage pyrolyzing furnace under N.sub.2 atmosphere, and heating from room temperature to 500-900? C. to obtain first-stage pyrolysis gas; and entering the first-stage pyrolysis gas into a second-stage pyrolyzing furnace for secondary catalytic cracking, so as to obtain hydrogen-rich fuel gas.
METHOD FOR PREPARING HYDROGEN-RICH FUEL GAS BY CATALYZING BIOMASS TAR CRACKING USING ALUMINUM SMELTING WASTE RESIDUES
Disclosed is a method for preparing hydrogen-rich fuel gas, including adding aluminum smelting waste residues into medium strong acid and soaking for 2-4 h, filtering and baking an obtained precipitate at 300-400? C. for 3-6 h to obtain pre-treated aluminum smelting waste residues; adding the waste residues into weak acid and performing ultrasonic treatment, performing centrifugal separation on an aluminum ash solution, baking for 3-6 h at a constant temperature of 400-500? C. in an air atmosphere, and naturally cooling to room temperature to obtain a cracking catalyst; uniformly mixing the cracking catalyst and biomass with a mass ratio of 1:1 and adding into a first-stage pyrolyzing furnace under N.sub.2 atmosphere, and heating from room temperature to 500-900? C. to obtain first-stage pyrolysis gas; and entering the first-stage pyrolysis gas into a second-stage pyrolyzing furnace for secondary catalytic cracking, so as to obtain hydrogen-rich fuel gas.
Plug flow reactor with internal recirculation fluidized bed
A reactor comprises an outer sidewall and a bottom wall enclosing a hollow chamber comprising a lower fluidized bed zone and an upper freeboard zone. A plurality of inlets is provided for injecting at least one fluidizing medium into the fluidized bed zone and creating a swirling flow. At least one feed inlet communicates with the fluidized bed zone; and at least one product outlet is provided for removing a product from the chamber, the outlet(s) communicating with either the fluidized bed zone or the freeboard zone. The reactor has at least one internal barrier located inside the hollow chamber, and at least partly located in the fluidized bed zone. The internal barrier(s) have at least one opening within the fluidized bed zone, such as an underflow opening, to permit internal recirculation of material from the product zone to the feed zone, thereby simplifying reactor structure.
Plug flow reactor with internal recirculation fluidized bed
A reactor comprises an outer sidewall and a bottom wall enclosing a hollow chamber comprising a lower fluidized bed zone and an upper freeboard zone. A plurality of inlets is provided for injecting at least one fluidizing medium into the fluidized bed zone and creating a swirling flow. At least one feed inlet communicates with the fluidized bed zone; and at least one product outlet is provided for removing a product from the chamber, the outlet(s) communicating with either the fluidized bed zone or the freeboard zone. The reactor has at least one internal barrier located inside the hollow chamber, and at least partly located in the fluidized bed zone. The internal barrier(s) have at least one opening within the fluidized bed zone, such as an underflow opening, to permit internal recirculation of material from the product zone to the feed zone, thereby simplifying reactor structure.
Catalytic conversion of carbonaceous feedstock material into a biochar product
Systems, methods and apparatus for the thermal conversion of carbonaceous feedstock material into biochar. The carbonaceous feedstock material may be harvested, preprocessed and pyrolyzed. An amount of carbonaceous feedstock material is received. An amount of a catalyst is applied to the carbonaceous feedstock material. The carbonaceous feedstock material and the applied catalyst is heated in an anaerobic environment to a temperature of at least 300 C. The biochar material is then generated.
Catalytic conversion of carbonaceous feedstock material into a biochar product
Systems, methods and apparatus for the thermal conversion of carbonaceous feedstock material into biochar. The carbonaceous feedstock material may be harvested, preprocessed and pyrolyzed. An amount of carbonaceous feedstock material is received. An amount of a catalyst is applied to the carbonaceous feedstock material. The carbonaceous feedstock material and the applied catalyst is heated in an anaerobic environment to a temperature of at least 300 C. The biochar material is then generated.
Carbon fiber recycling system and method of operation
A method and apparatus for obtaining carbon fiber from carbon fiber waste (e.g., pre-preg and CFP waste). The method and apparatus selects, or is controlled to select, between using an oxygen free pyrolytic process to volatilize the epoxy resin or other matrix in which the fibers are held to liberate the fibers therefrom and, depending upon the type of pre-preg waste, using a reactor environment where the reactor atmosphere has about 1% to about 2% oxygen by volume. The reactor has a counterflow such that the carbon fibers are moved in one direction and the off gasses are moved in the opposite direction. A combination of steam at the reactor outlet and vacuum pressure at the reactor inlet create the counter flow.
Method and apparatus for the manufacturing of biochar with thermal treatment
A method and an apparatus for manufacturing, with thermal treatment, biocoal which is non-energent, such as functional as a heat sink, by using a conveyor arrangement housed in an essentially Thompson Converter type process space. A to-be-processed feedstock is conveyed in the process space with the conveyor arrangement, which is closed relative thereto, in a longitudinal direction of the process space. A pyrolysis gas, generated from the to-be-processed feedstock present inside the conveyor arrangement as a result of heat transferring from the process space thereto, is conducted into a combustion chamber included in the process space for burning the gas, a thereby generated flue gas being removed from the process space by a discharge arrangement and a resulting non-energent biocoal being removed from the conveyor arrangement for further processing.
Method and apparatus for the manufacturing of biochar with thermal treatment
A method and an apparatus for manufacturing, with thermal treatment, biocoal which is non-energent, such as functional as a heat sink, by using a conveyor arrangement housed in an essentially Thompson Converter type process space. A to-be-processed feedstock is conveyed in the process space with the conveyor arrangement, which is closed relative thereto, in a longitudinal direction of the process space. A pyrolysis gas, generated from the to-be-processed feedstock present inside the conveyor arrangement as a result of heat transferring from the process space thereto, is conducted into a combustion chamber included in the process space for burning the gas, a thereby generated flue gas being removed from the process space by a discharge arrangement and a resulting non-energent biocoal being removed from the conveyor arrangement for further processing.