US20020139660A1 - Emission control device and method - Google Patents
Emission control device and method Download PDFInfo
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- US20020139660A1 US20020139660A1 US09/858,129 US85812901A US2002139660A1 US 20020139660 A1 US20020139660 A1 US 20020139660A1 US 85812901 A US85812901 A US 85812901A US 2002139660 A1 US2002139660 A1 US 2002139660A1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/32—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by electrical effects other than those provided for in group B01D61/00
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N1/00—Silencing apparatus characterised by method of silencing
- F01N1/08—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling
- F01N1/083—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling using transversal baffles defining a tortuous path for the gases or successively throttling gas flow
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
- F01N13/009—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00 having two or more separate purifying devices arranged in series
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
- F01N13/009—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00 having two or more separate purifying devices arranged in series
- F01N13/0097—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00 having two or more separate purifying devices arranged in series the purifying devices are arranged in a single housing
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/0892—Electric or magnetic treatment, e.g. dissociation of noxious components
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
- F01N3/24—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by constructional aspects of converting apparatus
- F01N3/26—Construction of thermal reactors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
- F01N3/24—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by constructional aspects of converting apparatus
- F01N3/28—Construction of catalytic reactors
- F01N3/2882—Catalytic reactors combined or associated with other devices, e.g. exhaust silencers or other exhaust purification devices
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
- F01N3/24—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by constructional aspects of converting apparatus
- F01N3/28—Construction of catalytic reactors
- F01N3/2882—Catalytic reactors combined or associated with other devices, e.g. exhaust silencers or other exhaust purification devices
- F01N3/2885—Catalytic reactors combined or associated with other devices, e.g. exhaust silencers or other exhaust purification devices with exhaust silencers in a single housing
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F37/00—Fixed inductances not covered by group H01F17/00
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N1/00—Silencing apparatus characterised by method of silencing
- F01N1/08—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2230/00—Combination of silencers and other devices
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2230/00—Combination of silencers and other devices
- F01N2230/04—Catalytic converters
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2230/00—Combination of silencers and other devices
- F01N2230/08—Thermal reactors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2240/00—Combination or association of two or more different exhaust treating devices, or of at least one such device with an auxiliary device, not covered by indexing codes F01N2230/00 or F01N2250/00, one of the devices being
- F01N2240/04—Combination or association of two or more different exhaust treating devices, or of at least one such device with an auxiliary device, not covered by indexing codes F01N2230/00 or F01N2250/00, one of the devices being an electric, e.g. electrostatic, device other than a heater
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2250/00—Combinations of different methods of purification
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2330/00—Structure of catalyst support or particle filter
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2370/00—Selection of materials for exhaust purification
- F01N2370/02—Selection of materials for exhaust purification used in catalytic reactors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2450/00—Methods or apparatus for fitting, inserting or repairing different elements
- F01N2450/40—Retrofitting exhaust apparatus
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2570/00—Exhaust treating apparatus eliminating, absorbing or adsorbing specific elements or compounds
- F01N2570/10—Carbon or carbon oxides
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2570/00—Exhaust treating apparatus eliminating, absorbing or adsorbing specific elements or compounds
- F01N2570/12—Hydrocarbons
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2570/00—Exhaust treating apparatus eliminating, absorbing or adsorbing specific elements or compounds
- F01N2570/14—Nitrogen oxides
Definitions
- the present invention relates generally to an apparatus and method for treating exhaust gases, and more particularly to a combustion engine treatment device for removing and/or reducing pollutants contained in the combustion engine effluent gases.
- the present invention reduces carbon dioxide, substantially reduces hydrocarbons and nitrous oxides, and virtually eliminates the exhaust of carbon monoxide from those gases in the exhaust stream.
- electrostatic precipitation is widely used in such applications and involves the application of high voltages to electrodes positioned in the exhaust gas stream. This process induces ionization of gas particles which in turn causes particulates suspended in the gas to acquire a charge from contact with the ionized gas particles. The charged particles are then collected at oppositely charged diodes which must be eventually “cleaned” or “scrubbed”.
- a significant drawback of electrostatic precipitation is that only a small amount of particulate matter can be precipitated out of the exhaust stream. The process is ineffective at removing gaseous contaminants such as carbon monoxide and carbon dioxide.
- Burners, activated carbon and water curtains are also widely used to reduce hydrocarbon and volatile organic compound emissions.
- these pollution control devices are impractical for use with internal combustion engines.
- a significant drawback of burners and water curtains is a large operational cost and activated carbon is easily clogged when treating a particulate laden air stream.
- Masters U.S. Pat. No. 5,419,123, discloses an emission control device and method for treating exhaust gases to reduce pollutants contained therein.
- the device includes a treatment chamber having a first metal screen, a second metal screen and a perforated chemical substrate disposed between the first and second metal screens.
- An electrode is disposed a distance from the first screen. Voltage is applied to this electrode so that sparks are generated between the electrode and the first screen.
- the Masters patent may reduce emissions in the exhaust stream, it has several limitations. Firstly, a plug is used to deliver the spark. This area of the plug is concentrated to a portion of the first screen and hence is not evenly distributed over the entirety of the screen. Consequently, a portion of the gas stream is not sufficiently treated under this method. This problem becomes more pronounced if the plug becomes angled towards or away from the first screen.
- the present invention provides a superior apparatus and method for reducing or eliminating emissions from a gas stream.
- the gas stream is treated by a treatment chamber in series with a second chamber having perforated strata.
- the treatment chamber includes an insulated first metal grid supplied with high voltage and a second metal grid that is grounded to the treatment chamber to generate an electrical charge over the entirety of the first grid to the second grid thereby causing electronic ionization. Since all of the gas stream is required to flow through the first and second grids, all of the gas stream is fully treated.
- the second metal grid is conductively connected to the second chamber containing strata and, therefore, the entire connection and the second treatment chamber are also electronically ionized. Due to the treatment caused by a more complete electronic ionization, the strata can more fully perform its function with significantly less use of noble metals than with a conventional catalytic converter. Although maximum pollution reduction occurs with the use of about one tenth ( ⁇ fraction (1/10) ⁇ ) of a troy ounce of platinum, rhodium, or palladium per converter, favorable results can also be achieved without using noble metals whatsoever.
- a further advance, in the form of a special electrical cable, is a high efficiency induction coil.
- This induction coil applies voltage from a power coil to the insulated first metal grid at an efficiency of at least eighty percent (80%) thereby generating a very hot electrical charge between the first grid and the second grid.
- This induction coil is further configured to dampen the magnetic field created by the power coil. Dampening the magnetic field is particularly important in automotive applications and other applications which are integrated with computers since the magnetic field can create random cycling current in the electrical system causing false signals to be sent to the automotive computers.
- the present invention reduces carbon dioxide, substantially reduces NOx and hydrocarbons, and virtually eliminates the exhaust of carbon monoxide.
- the invention can be used to treat emissions from industrial effluent stacks, spray booth, styrene manufacturing, the burning of hazardous waste and purifying air streams among a variety of other industrial processes. It is particularly useful for treating emissions from the combustion of all carbon or fossil fuels.
- the system can be installed as original equipment, as an add on device or as an after market device.
- the principal object of the present invention is to provide an improved apparatus and method for reducing pollutants from an exhaust stream.
- the apparatus includes a first body forming a first chamber.
- the first and second metal grids are fixed within the first chamber so that the exhaust stream entering the first chamber passes through the grids.
- An electrical connector is attached to either the first grid or the second grid and connects that grid to a voltage source causing an electrical charge to be generated between the first grid and the second grid.
- a pulsing mechanism pulses the applied voltage at a predetermined frequency.
- a second body forming a second chamber has perforated strata through which the exhaust stream flows.
- Another object of the invention is to provide a voltage difference between the first grid and the second grid of at least 20,000 volts.
- the grid receiving the voltage is insulated from the first body while the other grid is grounded.
- the pulsing mechanism is capable of pulsing the voltage at a frequency of greater than 1,600 pulses per minute.
- a further object of the present invention is to fix the nearer of the first or second grid a distance between about 2.54 centimeters (1 inch) and 30.48 centimeters (12 inches) from the strata. Additionally, another object is to space the first grid from the second grid a distance between about 0.635 centimeter (1 ⁇ 4 inch) to 2.54 centimeters (1 inch).
- Another object of the present invention is to use an electrical connector which is adapted to apply at least eighty percent (80%) of the voltage the connector receives.
- a further object of the present invention is for the electrical connector to include a plurality of bare wires juxtaposed in a first curvilinear row and coiled equal-distantly about a curvilinear centerline thereby forming a curvilinear helix shape.
- a plurality of insulated wires are juxtaposed in a second curvilinear row and coiled around the bare wires.
- An insulated center core is positioned along the curvilinear centerline and disposed within the bare wires and the insulated wires.
- a still further object is for the electrical connector to use four or more bare wires, three or more insulating wires and an insulated center core.
- Another object of this invention is to provide a method of treating an exhaust stream to reduce pollutants contained therein.
- the method includes the steps of passing the exhaust stream through a first body forming a chamber.
- the exhaust stream is passed through a first grid and a second grid fixed within the chamber.
- the grids are separated a predetermined distance from each other.
- Voltage is supplied from a voltage source to either the first or the second grid to generate an electrical charge between the first grid and the second grid.
- the voltage is pulsed at a predetermined frequency.
- the exhaust stream further passes through a strata.
- a further object of the invention is to provide a voltage difference between the first grid and the second grid of at least 20,000 volts at a frequency of at least 1,600 pulses per minute.
- the voltage receiving grid is insulated from the first body while the other grid is grounded.
- FIG. 1 is a diagrammatic view of an embodiment of the present invention shown in use as an emission control device
- FIG. 2 is a perspective view shown in partial cut-away of a induction coil
- FIG. 2 a is a perspective view of a detail showing the induction coil of FIG. 2;
- FIG. 3 is a perspective view shown in partial cut-away of a treatment chamber
- FIG. 4 is a perspective fragmentary view taken along line 4 - 4 of FIG. 1 showing a second chamber having a strata;
- FIG. 5 is an perspective view shown in partial cut-away showing an alternative embodiment of the second chamber having baffles.
- FIG. 1 generally illustrates a system 10 for treating an exhaust stream by reducing pollutants contained therein.
- the system 10 includes a power coil 12 , an induction coil 14 , a first chamber 16 and a second chamber 18 .
- the first chamber 16 includes a continuous outer wall 20 , an intake end 22 and an exhaust end 24 .
- An insulated first metal grid 26 is disposed within the treatment chamber and separated from the outer wall 20 by an insulator 28 .
- a grounded second metal grid 30 is disposed within and attached to the treatment chamber 16 a predetermined distance from the insulated first metal grid 26 .
- the power coil 12 is connected to the insulated first metal grid 26 via the induction coil 14 .
- a frequency mechanism 32 is provided for pulsing the voltage supplied to the insulated first metal grid 26 at a predetermined optimum frequency depending upon the application.
- the induction coil 14 comprises a standard plug core 34 , a plurality of copper wires 36 juxtaposed in a row and a plurality of insulated copper wires 38 juxtaposed in a row.
- the insulated copper wires 38 are wrapped throughout the length of the copper wire 36 cluster, and the combination thereof is wrapped throughout the length of the plug core 34 .
- the insulated copper wires 38 are a group of three or more, and four or more wires comprise the cluster of copper wires 36 .
- a metal eyelet can be provided to ground the induction coil 14 .
- the wires 34 , 36 , 38 are standard wires.
- the standard plug core can be 8 millimeters and made of silicon or copper
- the copper wires 36 can be 18 gauge
- the insulated wires 38 can be 18 gauge.
- the first chamber 16 is a segment of an exhaust conduit 40 .
- the first chamber 16 is upstream of the second chamber 18 .
- the first chamber 16 can also be placed generally anywhere in-line in the exhaust system such as, for example, after the second chamber 18. However, such positioning is less efficient in pollution reduction.
- the first chamber 16 is preferably cylindrical and formed of metal.
- the first and second metal grids 26 , 30 are perpendicular to a central axis 41 of the first chamber 16 .
- the grids 26 , 30 have a meshed pattern and completely fill the cross-sectional area of the first chamber 16 so that all of the exhaust passes therethrough.
- the first grid 26 is insulated from, and secured to, the continuous wall 20 by any conventional means 28 .
- the grounded second grid 30 is conductively secured to the continuous wall 20 by any conventional means such as welding. It is preferred that the grids 26 , 30 are fabricated from chromium, stainless steel or magnesium alloy, however, other conductive compositions can also be used.
- the induction coil 14 passes through the continuous wall and attaches to the insulated first grid 26 to directly apply voltage thereto.
- the entire first grid 26 is placed at the supplied voltage potential causing electrical charges to be generated across the gap between the insulated first grid 26 and the grounded second grid 30 .
- the first grid is shown upstream of the second grid 30 , this positioning can be reversed.
- the second chamber 18 is preferably cylindrical and has a metal shell 42 .
- the second chamber 18 includes a proximal diffusion end 44 , a central portion filled with strata 46 and a distal end 48 for exhausting the treated exhaust.
- the strata 46 can be formed of silica or metal having between 7.9 holes per centimeter (20 holes per inch) and 157.5 holes per centimeter (400 holes per inch) to allow the exhaust stream to flow therethrough. Larger holes 50 are preferred when treating heavier flows such as emissions from a diesel engine while smaller holes 50 are used with lighter emissions.
- the holes 50 are generally linear and parallel with a central axis of the second chamber 18 .
- a honeycomb strata can be used.
- the strata 46 will contain about one-tenth ( ⁇ fraction (1/10) ⁇ ) of one troy ounce or less of noble metals such as palladium, platinum or rhodium depending upon the application.
- the strata can be formed without noble metals.
- the distal end 48 can be provided with a series of baffles 52 which muffles sound and can serve to replace a standard muffler depending upon the application.
- the pollutant laden exhaust stream flows through the exhaust conduit 40 into the first chamber 16 through the intake end 22 , passes through the insulated first grid 26 , then through the grounded second grid 30 before exiting the exhaust end 24 .
- a predetermined distance between the first and second grids 26 , 30 typically ranges from 0.635 centimeter (1 ⁇ 4 inch) to 2.54 centimeters (one inch) depending on the voltage of the first grid 26 .
- the grids 26 , 30 are spaced a distance of 0.318 centimeter (1 ⁇ 8inch) for the first 20,000 volts and then an additional 0.318 centimeter (1 ⁇ 8 inch) for each 10,000 volt increment.
- the first chamber 16 can be located anywhere in-line in the exhaust system but generally is placed between 2.54 centimeters (one inch) and 30.48 centimeters (12 inches) from the second chamber 18 depending upon the application.
- any power coil and pulsing mechanism sufficient to supply the necessary voltage at the proper frequency can be used.
- the applicant has determined that a voltage of at least 20,000 volts at a pulse rate of at least 1,600 pulses per minute is preferred for optimizing the reduction of carbon monoxide, hydrocarbons and NOx depending on the exhaust stream being treated.
- the voltage will be in the range of 40,000 to 100,000 volts and the pulse rate will be in the range of 1,600 to 10,000 pulses per minute.
- wetter exhaust such as the exhaust from a diesel internal combustion engine requires higher voltage and pulse frequency than emissions from lighter fuels such as unleaded gasoline or propane.
- an output between 40,000 to 60,000 volts at 2,000 to 5,000 pulses per minute is preferred for optimizing reduction of carbon monoxide, hydrocarbons and NOx depending upon the application.
- the voltage and frequency are also set in proportion to the displacement of the engine with the upper values more suitable for larger engines.
- a power coil 12 can be any voltage source that provides the predetermined voltage.
- a pulsing mechanism can be any device which sets the voltage at the proper frequency.
- FIG. 1 illustrates that the power coil 12 can comprise a voltage box 54 and an automotive battery 56 .
- the primary windings of the voltage box 54 is supplied with approximately three (3) amperes from a twelve volt automotive battery 56 and outputs 40,000 volts to the induction coil 14 at a pulse rate of about 2,500 pulses per minute depending upon the application.
- small engines such as two cycle engines can have a dual magneto that can supply voltage at the proper frequency to the first grid 26 by the magneto without use of a battery or voltage box.
- the inventive induction coil 14 is configured to deliver at least eighty percent (80%) of the voltage to the insulated first grid 26 and to dampen the magnetic field created by the induction coil 14 itself. Measured on an alternating current scale, this dampening effect caused by the induction coil 14 avoids creating radio frequency interference (cycling frequency) greater than 0.4 volts in the induction coil 14 itself, and preferably less than 0.4 volts in the adjacent wiring.
- radio frequency interference cycling frequency
- FIG. 2 current supplied through the core wire 34 creates a magnetic field.
- this magnetic field is dampened by the combination of copper wires 36 and the insulated copper wires 38 . Dampening the magnetic field is particularly important in automotive applications and other applications which are integrated with computers. This is true since an undampened magnetic field can create random cycling current in the electrical system and at a level of approximately 0.5 volts false signals are sent to the automotive computers.
- exhaust pollutants are treated by electronic ionization at both the chemical and thermal levels.
- electronic ionization is caused by supplying voltage at a frequency to the insulated first grid 26 .
- Electronic ionization occurs between the first and second grids 26 , 30 .
- the exhaust conduit 40 and second chamber 18 , including the strata, 46 are ionized. Since the insulated first grid 26 receives the entire exhaust stream and the voltage is supplied to the entirety of the insulated first grid 26 , all of the exhaust is fully treated by electronic ionization.
- Exhaust exiting the first chamber 16 enters the second chamber 18 and passes through the strata 46 .
- the second chamber 18 treats the ionized exhaust stream by use of a catalyst in addition to electronic ionization.
- the preferred strata 46 contains about one-tenth ( ⁇ fraction (1/10) ⁇ ) of one troy ounce of noble metals such as, for example, platinum, palladium or rhodium which serve as a catalyst.
- the catalyst oxidizes carbon monoxide and hydrocarbon pollutants to form carbon dioxide and water.
- the catalyst also oxides NOx to form nitrogen and oxygen.
- the strata 46 also has the benefit of producing free radical molecules of oxygen (O 2 ) during operation of the emission control system 10 .
- Ozone (O 3 ) is created at the first grid 26 and the strata 46 oxidizes that ozone to generate oxygen therefrom.
- the strata in the second chamber 18 can be made of metal or silica.
- the applicant has found that the pollutant removal efficiency of the system 10 without noble metals is comparable to that of current catalytic converters.
- the present invention can be used with a standard catalytic converter, the reduction or elimination of noble metals from the second chamber 18 provides significant cost savings.
- the system 10 can be at full operating condition in as little as twenty to thirty seconds depending upon the application.
- voltage is supplied to the insulated first grid 26 in the first chamber 16 as soon as the ignition is turned to the “key-on” position thereby generating an electrical charge before exhaust is generated.
- the second chamber 18 fully operates at low heat typically in the range of 64° C. (160° F.) to 93° C. (200° F.) as measured at the outside shell 42 . This shell temperature correlates to an exhaust temperature of approximately 204° C. (400° F.).
- the present invention has been explained primarily in use with an automobile, the present invention is not limited to such.
- the system 10 could be mounted to an industrial effluent stack, to an exhaust stack from a spray booth, or to any such variety of other effluent stacks.
- the first chamber 16 could be supplied pulsed voltage from any number of independent sources.
Abstract
An emission control device and method are provided for treating exhaust to reduce pollutants contained therein. The device includes a first chamber through which the exhaust passes. First and second metal grids are disposed within the first chamber at a predetermined distance from each other. Voltage is supplied to the insulated first grid by an electrical induction coil at a predetermined frequency depending upon the application. Electrical charges are generated between the first and second grids which electrically ionizes the exhaust stream. The exhaust stream is then further treated at a second chamber having strata. The strata can further include or exclude noble metals for treatment of the exhaust.
Description
- This is a Divisional of co-pending U.S. patent application Ser. No. 09/809,990, filed Mar. 16, 2001.
- The present invention relates generally to an apparatus and method for treating exhaust gases, and more particularly to a combustion engine treatment device for removing and/or reducing pollutants contained in the combustion engine effluent gases. In particular, the present invention reduces carbon dioxide, substantially reduces hydrocarbons and nitrous oxides, and virtually eliminates the exhaust of carbon monoxide from those gases in the exhaust stream.
- With the increasing use of automobiles, trucks, aircraft, and other combustion engine vehicles, growing concern over the gaseous pollutants emitted by these sources is justifiably mounting. Carbon monoxide, the toxic by-product of incomplete combustion, is a major contributor to air pollution and poses a very real threat to public health. Carbon dioxide, although non-toxic, is recognized as an air pollutant that directly causes the “greenhouse effect.” Modern fuels generate excessive amounts of carbon dioxide which scientists report are contaminating the atmosphere worldwide. Additionally, today's engines also generate an unhealthy amount of toxic hydrocarbons which are generally responsible for eye irritation, nasal congestion and breathing difficulties.
- In addition to the problems caused by exhaust emissions from combustion engines, significant exhaust pollution is also created from industrial effluent stacks as exemplified in spray booths, styrene manufacturing and the burning of hazardous waste, among a variety of industrial processes.
- Numerous devices and methods are known in the art for the control of exhaust gas contaminants. Among those methods, electrostatic precipitation is widely used in such applications and involves the application of high voltages to electrodes positioned in the exhaust gas stream. This process induces ionization of gas particles which in turn causes particulates suspended in the gas to acquire a charge from contact with the ionized gas particles. The charged particles are then collected at oppositely charged diodes which must be eventually “cleaned” or “scrubbed”. A significant drawback of electrostatic precipitation is that only a small amount of particulate matter can be precipitated out of the exhaust stream. The process is ineffective at removing gaseous contaminants such as carbon monoxide and carbon dioxide.
- Burners, activated carbon and water curtains are also widely used to reduce hydrocarbon and volatile organic compound emissions. However, these pollution control devices are impractical for use with internal combustion engines. Additionally, a significant drawback of burners and water curtains is a large operational cost and activated carbon is easily clogged when treating a particulate laden air stream.
- In the automobile industry, in efforts to meet increasingly more stringent vehicle emissions standards, some manufacturers have begun using multiple catalytic converters on their vehicles. However, the conventional catalytic converter is expensive to manufacture since platinum, palladium or rhodium is used in its manufacture.
- Applicant is aware of the following U.S. Patent:
U.S. Pat. No. Inventor Issue Date Title 5,419,123 Masters 05-30-1995 EMISSION CONTROL DEVICE AND METHOD - Masters, U.S. Pat. No. 5,419,123, discloses an emission control device and method for treating exhaust gases to reduce pollutants contained therein. The device includes a treatment chamber having a first metal screen, a second metal screen and a perforated chemical substrate disposed between the first and second metal screens. An electrode is disposed a distance from the first screen. Voltage is applied to this electrode so that sparks are generated between the electrode and the first screen.
- Although the Masters patent may reduce emissions in the exhaust stream, it has several limitations. Firstly, a plug is used to deliver the spark. This area of the plug is concentrated to a portion of the first screen and hence is not evenly distributed over the entirety of the screen. Consequently, a portion of the gas stream is not sufficiently treated under this method. This problem becomes more pronounced if the plug becomes angled towards or away from the first screen.
- Secondly, since the voltage is applied to the plug via standard wiring, there are significant losses such that only about thirty percent (30%) of the voltage generated is actually applied to the plug. Accordingly, for 15,000 volts to be delivered to the plug, about 50,000 volts must be supplied. This high voltage is particularly problematic when used with an automobile since it can cause random cycling frequency in the automobile's circuitry sufficient to send false codes to the automobile's computers or even damage the computers.
- Thirdly, by placing the first and second screens on opposite sides of the strata, sparks are not generated between the screens.
- The present invention provides a superior apparatus and method for reducing or eliminating emissions from a gas stream. The gas stream is treated by a treatment chamber in series with a second chamber having perforated strata. The treatment chamber includes an insulated first metal grid supplied with high voltage and a second metal grid that is grounded to the treatment chamber to generate an electrical charge over the entirety of the first grid to the second grid thereby causing electronic ionization. Since all of the gas stream is required to flow through the first and second grids, all of the gas stream is fully treated.
- The second metal grid is conductively connected to the second chamber containing strata and, therefore, the entire connection and the second treatment chamber are also electronically ionized. Due to the treatment caused by a more complete electronic ionization, the strata can more fully perform its function with significantly less use of noble metals than with a conventional catalytic converter. Although maximum pollution reduction occurs with the use of about one tenth ({fraction (1/10)}) of a troy ounce of platinum, rhodium, or palladium per converter, favorable results can also be achieved without using noble metals whatsoever.
- A further advance, in the form of a special electrical cable, is a high efficiency induction coil. This induction coil applies voltage from a power coil to the insulated first metal grid at an efficiency of at least eighty percent (80%) thereby generating a very hot electrical charge between the first grid and the second grid. This induction coil is further configured to dampen the magnetic field created by the power coil. Dampening the magnetic field is particularly important in automotive applications and other applications which are integrated with computers since the magnetic field can create random cycling current in the electrical system causing false signals to be sent to the automotive computers.
- Yet another advance is that the present invention reduces carbon dioxide, substantially reduces NOx and hydrocarbons, and virtually eliminates the exhaust of carbon monoxide. The invention can be used to treat emissions from industrial effluent stacks, spray booth, styrene manufacturing, the burning of hazardous waste and purifying air streams among a variety of other industrial processes. It is particularly useful for treating emissions from the combustion of all carbon or fossil fuels. The system can be installed as original equipment, as an add on device or as an after market device.
- The principal object of the present invention is to provide an improved apparatus and method for reducing pollutants from an exhaust stream. The apparatus includes a first body forming a first chamber. The first and second metal grids are fixed within the first chamber so that the exhaust stream entering the first chamber passes through the grids. An electrical connector is attached to either the first grid or the second grid and connects that grid to a voltage source causing an electrical charge to be generated between the first grid and the second grid. A pulsing mechanism pulses the applied voltage at a predetermined frequency. A second body forming a second chamber has perforated strata through which the exhaust stream flows.
- Another object of the invention is to provide a voltage difference between the first grid and the second grid of at least 20,000 volts. The grid receiving the voltage is insulated from the first body while the other grid is grounded. Additionally, the pulsing mechanism is capable of pulsing the voltage at a frequency of greater than 1,600 pulses per minute.
- A further object of the present invention is to fix the nearer of the first or second grid a distance between about 2.54 centimeters (1 inch) and 30.48 centimeters (12 inches) from the strata. Additionally, another object is to space the first grid from the second grid a distance between about 0.635 centimeter (¼ inch) to 2.54 centimeters (1 inch).
- Another object of the present invention is to use an electrical connector which is adapted to apply at least eighty percent (80%) of the voltage the connector receives.
- A further object of the present invention is for the electrical connector to include a plurality of bare wires juxtaposed in a first curvilinear row and coiled equal-distantly about a curvilinear centerline thereby forming a curvilinear helix shape. A plurality of insulated wires are juxtaposed in a second curvilinear row and coiled around the bare wires. An insulated center core is positioned along the curvilinear centerline and disposed within the bare wires and the insulated wires.
- A still further object is for the electrical connector to use four or more bare wires, three or more insulating wires and an insulated center core.
- Another object of this invention is to provide a method of treating an exhaust stream to reduce pollutants contained therein. The method includes the steps of passing the exhaust stream through a first body forming a chamber. The exhaust stream is passed through a first grid and a second grid fixed within the chamber. The grids are separated a predetermined distance from each other. Voltage is supplied from a voltage source to either the first or the second grid to generate an electrical charge between the first grid and the second grid. The voltage is pulsed at a predetermined frequency. The exhaust stream further passes through a strata.
- A further object of the invention is to provide a voltage difference between the first grid and the second grid of at least 20,000 volts at a frequency of at least 1,600 pulses per minute. The voltage receiving grid is insulated from the first body while the other grid is grounded.
- The foregoing and other objects will become more readily apparent by referring to the following detailed description and the appended drawings in which:
- FIG. 1 is a diagrammatic view of an embodiment of the present invention shown in use as an emission control device;
- FIG. 2 is a perspective view shown in partial cut-away of a induction coil;
- FIG. 2a is a perspective view of a detail showing the induction coil of FIG. 2;
- FIG. 3 is a perspective view shown in partial cut-away of a treatment chamber;
- FIG. 4 is a perspective fragmentary view taken along line4-4 of FIG. 1 showing a second chamber having a strata; and
- FIG. 5 is an perspective view shown in partial cut-away showing an alternative embodiment of the second chamber having baffles.
- FIG. 1 generally illustrates a
system 10 for treating an exhaust stream by reducing pollutants contained therein. Thesystem 10 includes apower coil 12, aninduction coil 14, afirst chamber 16 and asecond chamber 18. - Per FIG. 3, the
first chamber 16 includes a continuousouter wall 20, anintake end 22 and anexhaust end 24. An insulatedfirst metal grid 26 is disposed within the treatment chamber and separated from theouter wall 20 by aninsulator 28. A groundedsecond metal grid 30 is disposed within and attached to the treatment chamber 16 a predetermined distance from the insulatedfirst metal grid 26. Thepower coil 12 is connected to the insulatedfirst metal grid 26 via theinduction coil 14. Afrequency mechanism 32 is provided for pulsing the voltage supplied to the insulatedfirst metal grid 26 at a predetermined optimum frequency depending upon the application. - As shown in FIGS. 2 and 2-A, the
induction coil 14 comprises astandard plug core 34, a plurality ofcopper wires 36 juxtaposed in a row and a plurality ofinsulated copper wires 38 juxtaposed in a row. The insulatedcopper wires 38 are wrapped throughout the length of thecopper wire 36 cluster, and the combination thereof is wrapped throughout the length of theplug core 34. Although any number of arrangements are possible, preferably the insulatedcopper wires 38 are a group of three or more, and four or more wires comprise the cluster ofcopper wires 36. A metal eyelet can be provided to ground theinduction coil 14. Thewires copper wires 36 can be 18 gauge and theinsulated wires 38 can be 18 gauge. - As shown in FIG. 1, the
first chamber 16 is a segment of anexhaust conduit 40. Preferably thefirst chamber 16 is upstream of thesecond chamber 18. Thefirst chamber 16 can also be placed generally anywhere in-line in the exhaust system such as, for example, after thesecond chamber 18. However, such positioning is less efficient in pollution reduction. - Referring to FIG. 3, the
first chamber 16 is preferably cylindrical and formed of metal. The first andsecond metal grids central axis 41 of thefirst chamber 16. Thegrids first chamber 16 so that all of the exhaust passes therethrough. Thefirst grid 26 is insulated from, and secured to, thecontinuous wall 20 by anyconventional means 28. The groundedsecond grid 30 is conductively secured to thecontinuous wall 20 by any conventional means such as welding. It is preferred that thegrids induction coil 14 passes through the continuous wall and attaches to the insulatedfirst grid 26 to directly apply voltage thereto. When voltage is applied to the insulatedfirst grid 26, the entirefirst grid 26 is placed at the supplied voltage potential causing electrical charges to be generated across the gap between the insulatedfirst grid 26 and the groundedsecond grid 30. Although the first grid is shown upstream of thesecond grid 30, this positioning can be reversed. - As shown in FIGS. 1, 4 and5, the
second chamber 18 is preferably cylindrical and has ametal shell 42. Thesecond chamber 18 includes aproximal diffusion end 44, a central portion filled withstrata 46 and adistal end 48 for exhausting the treated exhaust. Thestrata 46 can be formed of silica or metal having between 7.9 holes per centimeter (20 holes per inch) and 157.5 holes per centimeter (400 holes per inch) to allow the exhaust stream to flow therethrough. Larger holes 50 are preferred when treating heavier flows such as emissions from a diesel engine whilesmaller holes 50 are used with lighter emissions. Preferably, theholes 50 are generally linear and parallel with a central axis of thesecond chamber 18. However, a honeycomb strata can be used. Typically thestrata 46 will contain about one-tenth ({fraction (1/10)}) of one troy ounce or less of noble metals such as palladium, platinum or rhodium depending upon the application. Alternatively, the strata can be formed without noble metals. - As shown in FIG. 5, the
distal end 48 can be provided with a series ofbaffles 52 which muffles sound and can serve to replace a standard muffler depending upon the application. - Referring to FIG. 1, in operation the pollutant laden exhaust stream flows through the
exhaust conduit 40 into thefirst chamber 16 through theintake end 22, passes through the insulatedfirst grid 26, then through the groundedsecond grid 30 before exiting theexhaust end 24. A predetermined distance between the first andsecond grids first grid 26. In general, thegrids first chamber 16 can be located anywhere in-line in the exhaust system but generally is placed between 2.54 centimeters (one inch) and 30.48 centimeters (12 inches) from thesecond chamber 18 depending upon the application. - Any power coil and pulsing mechanism sufficient to supply the necessary voltage at the proper frequency can be used. The applicant has determined that a voltage of at least 20,000 volts at a pulse rate of at least 1,600 pulses per minute is preferred for optimizing the reduction of carbon monoxide, hydrocarbons and NOx depending on the exhaust stream being treated. Typically the voltage will be in the range of 40,000 to 100,000 volts and the pulse rate will be in the range of 1,600 to 10,000 pulses per minute. In general, wetter exhaust such as the exhaust from a diesel internal combustion engine requires higher voltage and pulse frequency than emissions from lighter fuels such as unleaded gasoline or propane. For example, with a gasoline powered automotive internal combustion engine, an output between 40,000 to 60,000 volts at 2,000 to 5,000 pulses per minute is preferred for optimizing reduction of carbon monoxide, hydrocarbons and NOx depending upon the application. The voltage and frequency are also set in proportion to the displacement of the engine with the upper values more suitable for larger engines.
- A
power coil 12 can be any voltage source that provides the predetermined voltage. A pulsing mechanism can be any device which sets the voltage at the proper frequency. As an example, and not to so limit the present invention, FIG. 1 illustrates that thepower coil 12 can comprise avoltage box 54 and anautomotive battery 56. The primary windings of thevoltage box 54 is supplied with approximately three (3) amperes from a twelve voltautomotive battery 56 and outputs 40,000 volts to theinduction coil 14 at a pulse rate of about 2,500 pulses per minute depending upon the application. As a further example, small engines, such as two cycle engines can have a dual magneto that can supply voltage at the proper frequency to thefirst grid 26 by the magneto without use of a battery or voltage box. - The
inventive induction coil 14 is configured to deliver at least eighty percent (80%) of the voltage to the insulatedfirst grid 26 and to dampen the magnetic field created by theinduction coil 14 itself. Measured on an alternating current scale, this dampening effect caused by theinduction coil 14 avoids creating radio frequency interference (cycling frequency) greater than 0.4 volts in theinduction coil 14 itself, and preferably less than 0.4 volts in the adjacent wiring. - Per FIG. 2, current supplied through the
core wire 34 creates a magnetic field. Per FIG. 2a, this magnetic field is dampened by the combination ofcopper wires 36 and theinsulated copper wires 38. Dampening the magnetic field is particularly important in automotive applications and other applications which are integrated with computers. This is true since an undampened magnetic field can create random cycling current in the electrical system and at a level of approximately 0.5 volts false signals are sent to the automotive computers. - While not wishing to be bound to any particular theory, it is believed that exhaust pollutants are treated by electronic ionization at both the chemical and thermal levels. Referring to FIG. 1, electronic ionization is caused by supplying voltage at a frequency to the insulated
first grid 26. Electronic ionization occurs between the first andsecond grids exhaust conduit 40 andsecond chamber 18, including the strata, 46 are ionized. Since the insulatedfirst grid 26 receives the entire exhaust stream and the voltage is supplied to the entirety of the insulatedfirst grid 26, all of the exhaust is fully treated by electronic ionization. - Exhaust exiting the
first chamber 16 enters thesecond chamber 18 and passes through thestrata 46. Thesecond chamber 18 treats the ionized exhaust stream by use of a catalyst in addition to electronic ionization. Presently, thepreferred strata 46 contains about one-tenth ({fraction (1/10)}) of one troy ounce of noble metals such as, for example, platinum, palladium or rhodium which serve as a catalyst. The catalyst oxidizes carbon monoxide and hydrocarbon pollutants to form carbon dioxide and water. The catalyst also oxides NOx to form nitrogen and oxygen. Thestrata 46 also has the benefit of producing free radical molecules of oxygen (O2) during operation of theemission control system 10. Ozone (O3) is created at thefirst grid 26 and thestrata 46 oxidizes that ozone to generate oxygen therefrom. - Alternatively, the strata in the
second chamber 18 can be made of metal or silica. The applicant has found that the pollutant removal efficiency of thesystem 10 without noble metals is comparable to that of current catalytic converters. Although the present invention can be used with a standard catalytic converter, the reduction or elimination of noble metals from thesecond chamber 18 provides significant cost savings. - Another important benefit of the present invention is its extremely short start-up time. The
system 10 can be at full operating condition in as little as twenty to thirty seconds depending upon the application. For automotive use, voltage is supplied to the insulatedfirst grid 26 in thefirst chamber 16 as soon as the ignition is turned to the “key-on” position thereby generating an electrical charge before exhaust is generated. Furthermore, although higher temperatures can be used, thesecond chamber 18 fully operates at low heat typically in the range of 64° C. (160° F.) to 93° C. (200° F.) as measured at theoutside shell 42. This shell temperature correlates to an exhaust temperature of approximately 204° C. (400° F.). Conventional catalytic converters take four or five minutes of engine warm-up time to reach operating temperatures of about 316° C. (600° F.) at the outside shell and 982° C. (1800° F.) internally. Since thesystem 10 operates at relatively low heat, extensive heat shielding is not required for thesecond chamber 18. Such low heat also reduces the probability of fires as caused by current catalytic converter systems. Additionally, since thesystem 10 operates independently of the engine, it does not require expensive interactive controls with the engine nor is a thermocouple necessary. - Although the present invention has been explained primarily in use with an automobile, the present invention is not limited to such. For example, the
system 10 could be mounted to an industrial effluent stack, to an exhaust stack from a spray booth, or to any such variety of other effluent stacks. For such other applications thefirst chamber 16 could be supplied pulsed voltage from any number of independent sources. - From the foregoing, it is readily apparent that I have invented an improved method and apparatus for reducing or eliminating pollutants, including gaseous pollutants, from an exhaust stream.
- It is also apparent that the reaction and reduction occurs at the grids and at the catalytic converter that is operable at a relatively low temperature.
- It is to be understood that the foregoing description and specific embodiments are merely illustrative of the best mode of the invention and the principles thereof, and that various modifications and additions may be made to the apparatus by those skilled in the art, without departing from the spirit and scope of this invention, which is therefore understood to be limited only by the scope of the appended claims.
Claims (4)
1. An electrical conductor, said conductor comprising:
a plurality of bare wires juxtaposed in a first curvilinear row and coiled equal-distantly about a curvilinear centerline forming a curvilinear helix;
a plurality of insulated wires juxtaposed in a second curvilinear row and coiled around said bare wires forming a curvilinear generally rectangular chamber around said bare wires; and
an insulated center-wire along the curvilinear centerline and disposed within said bare wires and said insulated wires.
2. The conductor according to claim 22 wherein said plurality of bare wires is four or more bare wires and are grounded.
3. The conductor according to claim 23 wherein said plurality of insulating wires is three or more insulating wires.
4. The conductor according claim 22 wherein said conductor is adapted to apply at least eighty percent (80%) of the voltage supplied to said conductor to one of said first grid or said second grid.
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
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US09/858,129 US20020139660A1 (en) | 2001-03-16 | 2001-05-15 | Emission control device and method |
US09/907,260 US20020139564A1 (en) | 2001-03-16 | 2001-07-17 | Emission control device and method |
US10/966,599 US7534401B2 (en) | 2001-03-16 | 2004-10-15 | Arcing electron stream apparatus and method |
Applications Claiming Priority (2)
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US09/809,990 US6508991B2 (en) | 2001-03-16 | 2001-03-16 | Emission control device and method |
US09/858,129 US20020139660A1 (en) | 2001-03-16 | 2001-05-15 | Emission control device and method |
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US09/809,990 Division US6508991B2 (en) | 2001-03-16 | 2001-03-16 | Emission control device and method |
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US09/907,260 Continuation-In-Part US20020139564A1 (en) | 2001-03-16 | 2001-07-17 | Emission control device and method |
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US09/858,129 Abandoned US20020139660A1 (en) | 2001-03-16 | 2001-05-15 | Emission control device and method |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
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US20050232827A1 (en) * | 2004-04-14 | 2005-10-20 | 3M Innovative Properties Company | Multilayer mats for use in pollution control devices |
WO2021144507A1 (en) * | 2020-01-16 | 2021-07-22 | BERRICHON, Claude-Annie | Cleaning the electric/magnetic fields of the air |
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US7534401B2 (en) * | 2001-03-16 | 2009-05-19 | Global Environmental Concepts, Llc | Arcing electron stream apparatus and method |
US6802404B1 (en) * | 2003-09-25 | 2004-10-12 | Tenneco Automotive Operating Company Inc. | Electro-rheological or magneto-rheological controlled hydraulic restriction |
CN101172209B (en) * | 2004-10-27 | 2010-06-23 | 陈妙生 | Dust separator |
CN1923344B (en) * | 2004-12-07 | 2010-06-16 | 陈妙生 | Waste gas purifier |
CN101024147B (en) * | 2006-02-17 | 2011-12-28 | 陈妙生 | Wast gas purifier |
US10436091B2 (en) | 2016-06-02 | 2019-10-08 | Pollution Control Devices, Llc | Emission control device |
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US3983021A (en) * | 1971-06-09 | 1976-09-28 | Monsanto Company | Nitrogen oxide decomposition process |
US4954320A (en) * | 1988-04-22 | 1990-09-04 | The United States Of America As Represented By The Secretary Of The Army | Reactive bed plasma air purification |
US5236672A (en) * | 1991-12-18 | 1993-08-17 | The United States Of America As Represented By The United States Environmental Protection Agency | Corona destruction of volatile organic compounds and toxics |
US5419123A (en) * | 1993-03-29 | 1995-05-30 | Unlimited Technologies, Inc. | Emission control device and method |
US5733360A (en) * | 1996-04-05 | 1998-03-31 | Environmental Elements Corp. | Corona discharge reactor and method of chemically activating constituents thereby |
-
2001
- 2001-03-16 US US09/809,990 patent/US6508991B2/en not_active Expired - Fee Related
- 2001-05-15 US US09/858,129 patent/US20020139660A1/en not_active Abandoned
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20050232827A1 (en) * | 2004-04-14 | 2005-10-20 | 3M Innovative Properties Company | Multilayer mats for use in pollution control devices |
US7550118B2 (en) * | 2004-04-14 | 2009-06-23 | 3M Innovative Properties Company | Multilayer mats for use in pollution control devices |
WO2021144507A1 (en) * | 2020-01-16 | 2021-07-22 | BERRICHON, Claude-Annie | Cleaning the electric/magnetic fields of the air |
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US20020157941A1 (en) | 2002-10-31 |
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