Side-Stream Particle Precipitator Apparatus and System for Condenser Open Loop Cooling System
20170029308 ยท 2017-02-02
Inventors
Cpc classification
C02F1/4606
CHEMISTRY; METALLURGY
C02F1/467
CHEMISTRY; METALLURGY
C02F2209/005
CHEMISTRY; METALLURGY
B03C2201/24
PERFORMING OPERATIONS; TRANSPORTING
C02F9/00
CHEMISTRY; METALLURGY
C02F1/766
CHEMISTRY; METALLURGY
International classification
C02F9/00
CHEMISTRY; METALLURGY
Abstract
A side-stream particle precipitator system for the breakdown and removal of bio-materials and suspended solids in water cooling systems using a plurality of ionizer treatment units utilizing electric and electro-magnetic fields and a mechanical vortex precipitating system to remove particulate materials contained in the water complex as suspended solids. The system also uses high voltage electrodes for charging the water complex to breakdown laminar flow at the conduit walls to mechanically dislodge any build-up of bio-materials or chemical compounds along the walls resulting in an increase in thermal conductivity.
Claims
1. A side-stream particle precipitator water treatment apparatus for the removal of biologic and particulate materials and dissolved solids suspended or retained in a water complex and on the surfaces of containment vessels and conduits for storing and transporting the water complex through a water cooling system comprising: a pump for circulating the water complex through the water treatment apparatus; a conductivity meter located at the water inlet to the pump for providing a sensor measurement of the electrical conductivity of the water complex; a program logic controller to control the timing and voltage supply to the water treatment apparatus, said program logic controller regulates the on/off timing of the circulating pump, the on/off timing, voltage levels and polarity of electrodes contained within ionizer cells, the on/off timing and voltage levels of the cooling system conduit electrodes, and controls the valving for regulating the flow direction and flow rate of the water complex through the ionizer cells and mechanical filters for filtering of particulate matter from the water complex by continual monitoring of the conductivity sensor measurement of the conductivity meter; a plurality ionizers comprising at least a first and second ionizers sequentially connected with each respective ionizer containing a unique electrode to substantially eliminate biologic materials in the form of aerobic and anaerobic organisms and particulate solids that are in solution in the water complex; said first ionizer comprised of a containment vessel that houses a first dual-spaced apart electrode structure extending into the flow path of the water complex within the vessel with each of the dual electrodes being of titanium, wherein, when such dual electrodes are energized under the regulation of the programmable logic controller with either the same or reverse polarity dc voltage, the dual electrodes drive free H.sub.2 and O.sub.2 from the water complex depriving the water complex of those chemicals resulting in the substantial elimination of most aerobic and anaerobic organisms that are in solution in the water complex for the lack of said chemicals; said second ionizer being comprised of a containment vessel that houses a single electrode structure extending into the flow path of the water complex within said vessel with said electrode consisting of a plurality of high-intensity electro-magnets positioned with spacing and polarity positioning maintained along the entire length of the electrode within a non-conducting outer tube, wherein said electro-magnets impart a surface charge to any clump, coagulate or colloidal particulate matter making particles in the range of 1-5 microns attract other particles to combine together making particles of larger sizes that will precipitate out of solution and be removed by mechanical filtering of the particulate solids from the water complex; a plurality of mechanical vortex precipitators connected in series to mechanically precipitate said particles of larger size out of the water complex for disposal, each of said plurality of mechanical vortex precipitators being comprised of a containment vessel having an inlet permitting the water complex to flow into and downward through an outer cylindrical chamber surrounding a central cylindrical chamber housing an inverted perforated cone located in an upper portion thereof and a trap at the bottom of the central cylindrical chamber with an outlet located above the central cylindrical chamber and the perforated inverted cone for the water complex outflow, wherein each of said mechanical precipitators forces the entering water complex downward through the outer cylindrical chamber and into the central cylindrical chamber creating a vortex having an upward flow toward the perforated inverted cone, said inverted cone delaying the outward flow of the water complex through the outlet, said water complex and the suspended and dissolved solids contained therein are retained within the perforated inverted for a limited time causing the return of the suspended particulate materials to the vortex below in the central cylindrical chamber which forces the suspended particulate materials outward to the sides of the central cylindrical chamber to precipitate down along the chamber walls to the bottom of the central cylindrical chamber and through a plurality of holes to be collected in the trap below for disposal; a series of high voltage low wattage electrodes situated within one or more conduits in the water cooling system to negatively charge the water complex creating a breakdown in the laminar boundary along the inner surfaces of the conduits in contact with the water complex that will dislodge and remove scale, slime, and some corrosion from the conduit surfaces and to disperse and retained dissolved solids within the water complex; whereby the water complex is cleansed of biologic and particulate matter either in suspension or residing on conduit or containment vessel surfaces increasing the thermal conductivity of the water complex and reducing overall water usage.
2. The water treatment apparatus of claim 1, wherein the dual electrodes housed in the first ionizer are continually energized by varying the voltage level within the range of 5-24 volts dc and reversing polarity of the electrodes under the regulation of the programmable logic controller.
3. The water treatment apparatus of claim 1, wherein the plurality of electro-magnets of the electrode housed in the second ionizer are spatially separated by a non-conducting spacer and aligned between the plurality of separating non-conducting spacers back-to-back, each electro-magnet being of the opposite polarity to its adjacent electro-magnets, said electro-magnets being in a continually energized state under the regulation of the programmable logic controller.
4. The water treatment apparatus of claim 1, wherein one or more additional ionizers each housing a dual electrode structure extending into the flow path of the water complex with each electrode made of titanium such that, when energized under the regulation of the programmable logic controller with either the same or reverse polarity dc voltage, the electrodes drive free H.sub.2 and O.sub.2 from the water complex depriving the water complex of those chemicals that will substantially eliminate most aerobic and anaerobic organisms that are in solution in the water complex for the lack of said chemicals are positioned between the first and second ionizers for treatment of higher volumes of the water complex.
5. The water treatment apparatus of claim 4, wherein the dual electrodes housed in the one or more additional ionizers are continually energized by varying the voltage level within the range of 5-24 volts dc and reversing polarity of the electrodes under the regulation of the programmable logic controller.
6. The water treatment apparatus of claim 1, wherein a third ionizer positioned between the first and second ionizers houses a dual electrode structure extending into the flow path of the water complex with each electrode made of a copper/silver alloy, where copper makes up 99% and silver makes up 1% of the alloy material, such that, when the electrodes are energized under the regulation of the programmable logic controller, the copper component of the copper/silver alloy erodes and is discharged into the water complex at a concentration rate of 0.1-0.3 ppm remaining in solution in said water complex for a time period of approximately one hour, during said time period and thereafter the eroded copper will bond with calcium in the water complex becoming a particulate solid that will precipitate out of solution to be removed from the water complex by mechanical filtering of the particulate solid.
7. The water treatment apparatus of claim 6, wherein the dual electrodes housed in the third ionizers are cyclically energized 3-4 times daily under the regulation of the programmable logic controller, said cycle usually occurring once every four hours during daylight hours to substantially eliminate and control the regrowth of surface growing algae and slime.
8. The water treatment apparatus of claim 1, wherein one or more high voltage electrodes are centrally axially positioned within one or more conduits of the water cooling system for negatively charging the water complex, said high voltage electrodes, when energized under the regulation of the programmable logic controller, cause the water complex to become negatively charged creating a breakdown in the laminar boundary at the inner surfaces of the conduits in contact with the water complex which, in turn, removes scale, slime, and corrosion from the conduit surfaces and dispersing the dissolved solids contained within the water complex increasing effective cooling and expected thermal exchange for the water cooling system.
9. The water treatment apparatus of claim 1 further comprising a bromine feeder that injects chemical oxidizer into the water complex to substantially eliminate organic materials, said bromine feeder being isolated by a pair of valves that are opened, under the regulation of the programmable logic controller, when the chemical oxidizer is needed in addition to or as a substitution for the several ionizers.
10. The water treatment apparatus of claim 1 further comprising a solid chemical corrosion inhibitor utilizing a non-toxic organic corrosion inhibitor that is dispensed from a solid chemical feeder and added to the water complex, said solid chemical corrosion inhibitor is isolated by a chemical pump that is operated, under the regulation of the programmable logic controller when make-up water is added to the water cooling system, at such time as the solid chemical additive becomes required to reduce corrosion levels in the conduits and containment vessels of the cooling system.
11. The water treatment apparatus of claim 1 further comprising a water complex flush which will occur under the regulation of the programmable logic controller, upon the sensing by the conductivity meter of an increased electrical conductivity in the water complex, by altering the flow direction and flow rate of the water complex through the mechanical precipitators by diverting the water complex through a diverting valve and entering through an upper portion of the mechanical vortex precipitators reversing the normal flow permitting the particulate material precipitated out of the water complex and collected in a filter trap to be flushed away along with any dissolved solids and particulate matter retained or suspended in the water complex through a drain valve.
Description
BRIEF DESCRIPTION OF THE DRAWINGS
[0038] For the purpose of illustrating the invention, there is shown in the drawings forms which are presently preferred; it being understood, however, that the invention is not limited to the precise arrangements and instrumentalities shown.
[0039]
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[0045]
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[0047]
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
[0048] The following detailed description is of the best presently contemplated mode of carrying out the invention. The description is not intended in a limiting sense, and is made solely for the purpose of illustrating the general principles of the invention. The various features and advantages of the present invention may be more readily understood with reference to the following detailed description taken in conjunction with the accompanying drawings.
[0049] Referring now to the drawings in detail, where like numerals refer to like parts or elements, there is shown in
[0050] Conductivity is used to measure the concentration of dissolved solids in the incoming water complex, which dissolved solids have been ionized in the water complex by travelling through the side-stream particle precipitator apparatus 10 at least once. Specific Conductance (SC) is a measure of how well water can conduct an electrical current. Conductivity will increase with an increasing number and mobility of ions present in the water solution. These ions, which come from the breakdown of compounds, conduct electricity because they are negatively or positively charged when dissolved in water.
[0051] The electrical conductivity meter (EC meter) 17 measures the electrical conductivity of the water complex in solution. EC meters are commonly used in hydroponics, aquaculture and freshwater systems to monitor the amount of nutrients, salts or impurities in the water.
[0052] Industrial conductivity probes often employ an inductive method of measurement, which has the advantage that the fluid does not wet the electrical parts of the sensor. Two inductively-coupled coils are used. One is the driving coil producing a magnetic field and it is supplied with an accurately-known voltage. The other inductor forms a secondary coil of a transformer. The liquid passing through a channel in the sensor forms one turn in the secondary winding of the transformer. The induced current between the first and second inductors is the output measurement of the sensor.
[0053] Over a limited temperature range, the way temperature effects the conductivity of a solution can be modeled linearly using the following formula:
where [0054] T is the temperature of the sample, [0055] T.sub.cal is the calibration temperature, [0056] T is the electrical conductivity at the temperature T, [0057] T.sub.cal is the electrical conductivity at the calibration temperature T.sub.cal, [0058] is the temperature compensation slope of the solution.
The temperature compensation slope for most naturally occurring waters is about 2%/ C., however it can range between 1% and 3%/ C.
[0059] After the initial measurements, the water complex is pumped into the water treatment system 10 by circulating pump 18. A divergent pathway is selected for the water complex depending upon the treatment protocol desired. Diverging flow valve 20 directs the water complex flow to either the ionizers 50 or to the particulate precipitators 80, both to be described in more detail below. The entire side-stream particle precipitator water treatment system 10 is controlled by a programmable logic controller, PLC, that coordinates and regulates the water complex flow direction and flow rate through the water treatment system 10. [0060] The PLC also controls the High Voltage power supplies, HV1, HV2, to furnish the appropriate voltage to the electrodes for appropriate treatment of the water complex. HV1 and HV2 control the electricity applied to electrodes within the flow of the water complex moving through the water treatment system 10. A positive dc voltage having a range of between 20 kv and 30 kv acts as a capacitor in the moving water complex that will collapse laminar boundaries in the fluid. The positive high voltage, low wattage charge also will improve thermal transfer across various heat exchanger surfaces. The high voltage power supplies HV1, HV2 will modulate the voltage in response to sensed conductivity in the water complex. A protective circuit creates an alarm condition and automatic shutdown if a high micro-ampere set point is reached. The high voltage, low amperage electrodes impart a net negative charge on dissolved solids contained in the water complex holding them in suspension in the moving flow. Negatively charged piping and conduit internal surfaces repel such negatively charged solids keeping them from lodging at joints and on other surfaces within the thermal exchange fluid flow containment system for maintaining maximum flow rate without internal surface buildup of unwanted particulates. The placement of the high voltage electrodes will be described more fully below.
[0061] The ionizers 50 consist of a series of containment vessels connected in a series array, each with a different purpose. All of the ionizer vessels 50 are structurally the same and reference can be made to
[0062] The first ionizer 50A has an electrode having the structure of electrode 58 shown in
[0063] The dual electrodes of electrode 58 are made of titanium that, when charged, drive hydrogen and oxygen from the water complex. The PLC creates a polarity change between the two electrodes of ionizer 50A by using a current reversal effect every 90 seconds. This will reduce the buoyancy of the water complex as the H.sub.2 and O.sub.2 are driven out of solution. The effect of depriving the water complex of free H.sub.2 and O.sub.2 will kill most aerobic and anaerobic organisms that are in solution in the water complex creating a solid precipitate for later filtering. Titanium is selected for its lightness of weight and resistance to destruction in the water complex solution. This electrode is powered continually by the PLC for proper treatment of the water complex. Additional ionizers, represented as 50B in
[0064] The second ionizer 50C has a different kind of electrode placed therein that directs its electromagnetic properties against particulate solids. With reference to
[0065] The third ionizer 50B, as shown in
[0066] For the different type ionizer 50B, the dual electrodes 70, 72 are made of a copper/silver alloy, where copper makes up 99% and silver makes up 1% of the alloy material. The copper/silver alloy material is utilized to effectively kill and control the regrowth of surface growing algae and slime in cooling tower systems. The copper is discharged into the water complex at a concentration rate of 0.1-0.3 ppm which will remain for approximately one hour in solution in the water complex. During that hour and thereafter the copper will bond with calcium in the water, become a particulate solid and precipitate out of the solution and be removed by the filtering to be described below. The water complex, if necessary, will be dosed with the copper 3-4 times daily where such cycle usually occurs once every four hours during daylight hours. Therefore, the ionizers 50A and 50B are constructed to target living organisms and plant life that will be rendered inert by the ionization and remain in the water complex solution as dissolved solids.
[0067] After completing treatment in each of the plurality of at least two ionizers 50 the water complex is presented to a series of mechanical vortex precipitators 80 such as the one shown in
[0068] Also included, on an as necessary basis, is a bromine feeder 26 that injects a chemical oxidizer to kill all organic material in the water complex. The bromine feeder is isolated by a pair of valves 22, 24 that are opened when the bromine additive becomes necessary, but only as a backup to the several ionizers 50. When required, the bromine feeder becomes active under PLC control only once per day for a 15-20 minute shock chemical treatment. Otherwise, the valves 22, 24 remain closed and the water complex bypasses the bromine feeder 26.
[0069] When make-up water is called for, a municipal water inlet is utilized to supply the make-up water. A solid chemical corrosion inhibitor utilizing a preferred non-toxic organic corrosion inhibitor, e.g., organo-phosphate, is dispensed in solid form from a solid chemical feeder 28 and may be added to the fluid flow when required under control of the PLC. The solid chemical inhibitor is isolated by a chemical pump 30 that is operated when the solid chemical additive becomes required to reduce the corrosion level in the pipes and containment vessels of the open-loop cooling system when the make-up water is added to the system.
[0070] The side-stream particle precipitator water treatment system 10 is shown as an added element of a larger cooling system as depicted in
[0071] The high voltage, low amperage electrodes, i.e., those shown as E1-E8, are structured as shown in
[0072] A view of the electrode 90 centrally axially positioned within the fluid inlet elbow of any of the condensers is shown in
[0073] The purpose of the water treatment system 10, augmented by the several condenser located electrodes 90 (E1-E8), is to save water usage and reduce the energy consumption to effectively operate the cooling system for its intended purposes. The water treatment system 10 effectively increases the efficiency of the cooling system through increased thermal conductivity by the removal of organic materials (organisms and plant life) and reducing particulate materials and dissolved solids within the fluid flow and conduit and containment vessels. This is accomplished by the described electrical charging and mechanical filtering of the water complex described above without the necessity of adding significant amounts of chemicals to the system. The electrical charging of the water complex also has the effect of dispersing the dissolved solids within the water complex to enhance thermal conductivity.
[0074] One example of whether the water treatment apparatus of the present invention makes a definitive difference in reducing particulate matter, e.g., suspended solids in the water complex, is the testing of cooling tower water for particle reduction. Testing is accomplished by utilizing an electro-optical particle analyzer to determine whether reduction of suspended particles occurs subsequent to the introduction of the water treatment apparatus. The electro-optical particle analyzer used employed a light scattering principle of operation in a dilute ratio 1:800 with filtered water and particle data correction. Stirring of the water was continuous. The testing was done over a three month period with a baseline analysis and a subsequent three month analysis tabulated in four cooling tower systems by sampling the cooling tower basin water. The following TABLE 1 shows significant reduction in both particulate material and suspended solids.
TABLE-US-00001 TABLE 1 Particle/Solids Suspended in Water Complex Analysis Site 1 Site 2 Site 3 Site 4 Size Baseline Treatment Baseline Treatment Baseline Treatment Baseline Treatment (microns) Sample Sample Sample Sample Sample Sample Sample Sample Particle Counts per 100 ml 1-3 8,352,320 835,508 167,046,400 633,057 40,222,400 994,644 6,021,040 276,928 3-5 1,568,520 23,090 31,370,400 22,860 2,073,600 220,904 2,053,640 23,224 5-10 1,708,520 48,440 34,170,400 9,189 1,454,000 243,224 3,079,640 36,064 10-15 572,480 18,706 11,449,600 1,642 484,000 57,648 1,151,720 16,040 15-25 776,640 6,570 15,532,800 2,612 580,800 72,788 1,456,640 31,060 Over 25 431,680 5,648 8,633,600 3,635 279,200 27,708 473,600 35,092 Solids per 100 Liters of System Volume (mm.sup.3) 1-5 167.20 8.16 3,344.08 6.53 454.50 22.10 179.60 3.70 5-10 721.00 20.44 14,419.91 3.88 613.60 102.64 1,299.60 15.20 Over 10 295,516.85 3,839.93 5,910,337.07 2,456.00 191,783.20 19,155.80 329,153.10 23,760.50
The significant reduction of particulate and solids material across all four sites having different conduit and vessel arrangements is clearly significant in showing that the water treatment system of the present invention operates to significantly reduce suspended and dissolved solids.
TABLE-US-00002 TABLE 2 Comparison of Treated Water Complex for in Suspension Solids Site 1 Site 2 Site 3 Site 4 Baseline Treatment Baseline Treatment Baseline Treatment Baseline Treatment Sample Sample Sample Sample Sample Sample Sample Sample ppm 2964 39 59281 25 1929 193 3306 238
As one can see from TABLE 2, the significant reduction in suspended solids in parts per million is readily apparent. The operation of the water treatment system of the present invention, without the use of chemicals, significantly reduces the presence of suspended solids and other particulate materials in cooling systems with only the unique electrical charging of the water complex and the use of electric and electro-magnetic fields to control bio-materials and filter them out of the water complex.
[0075] When required based upon the sensor signal from the conductivity meter 17, a flush of the water treatment system 10 is accomplished by diverting the fluid through the diverting valve 20 by reversing fluid flow through the precipitators 80 and opening valve 32 to permit the particulate material precipitated out of the water complex and collected in the precipitators trap 86 to be flushed away along with any particulate material and dissolved solids in the water complex to be flushed through master drain valve 34. A flow meter 36 tracks the flushed fluid to track water usage.
[0076] The water treatment system 10 of the present invention requires a lesser quantity of water to create a clean environment in the cooling system conduits and vessels due to the reuse of cleaned water from its ionizer and mechanical vortex precipitating of particulate material and dissolved solids out of the water complex. Since the present water treatment system principally utilizes electrical sources to control dissolved solids within the water complex it, therefore, uses significantly lesser amounts of chemicals. There is a resulting significant decrease in chemical disposal as well as any chemical by-products creating corrosion or build-up problems within the cooling system. The use of the electrodes effectively increases the thermal conductivity of the water complex through the breakdown and elimination of organic and inorganic matter and the mechanical filtering removes the particulate materials that have been coagulated together by the electro-magnetic electrode of the precipitators through precipitation of the coagulated or agglomerated solids and their collection in the trap. Taken together with the high voltage electrodes positioned in the condenser conduits, the water treatment system reduces corrosion within the conduits and vessel surfaces by breaking down the laminar layers at the conduit and vessel surfaces, as well as by not introducing as great a quantity of chemicals that breakdown and recombine to create corrosive effects on the metal surfaces of the conduits and vessels in the cooling system.
[0077] Maintenance of the water treatment system is also reduced by the longer life of the electrodes in the ionizers that can last for three years or longer without replacement. The high voltage electrodes are used effectively as capacitors rendering them not self-sacrificing of electrode material to the water complex. The electro-magnetic electrode is encapsulated and is not exposed to any materials that could possibly breakdown to magnetic or electrical properties or material of the magnets. Hence, the overall water treatment system 10 operates more efficiently without the use of harsh, corrosive chemicals, with less energy waste and with fewer overall fluid units needed to achieve the same thermal conductivity for the cooling system as has been previously done with only chemicals used to eliminate living organisms and corrosion.
[0078] The present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof and, accordingly, the described embodiments are to be considered in all respects as being illustrative and not restrictive, with the scope of the invention being indicated by the appended claims, rather than the foregoing detailed description, as indicating the scope of the invention as well as all modifications which may fall within a range of equivalency which are also intended to be embraced therein.