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WO1998011982A1 - Preparation et utilisation d'especes chimiques fortement reactives generees de maniere independante - Google Patents

Preparation et utilisation d'especes chimiques fortement reactives generees de maniere independante Download PDF

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Publication number
WO1998011982A1
WO1998011982A1 PCT/US1997/016556 US9716556W WO9811982A1 WO 1998011982 A1 WO1998011982 A1 WO 1998011982A1 US 9716556 W US9716556 W US 9716556W WO 9811982 A1 WO9811982 A1 WO 9811982A1
Authority
WO
WIPO (PCT)
Prior art keywords
activated species
subject fluid
jet
high speed
introducing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/US1997/016556
Other languages
English (en)
Inventor
Steven Bittenson
Frederick Becker
Ronald Breault
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Thermo Power Corp
Original Assignee
Thermo Power Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from US08/931,738 external-priority patent/US6030506A/en
Application filed by Thermo Power Corp filed Critical Thermo Power Corp
Priority to AU44848/97A priority Critical patent/AU4484897A/en
Publication of WO1998011982A1 publication Critical patent/WO1998011982A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J37/00—Discharge tubes with provision for introducing objects or material to be exposed to the discharge, e.g. for the purpose of examination or processing thereof
    • H01J37/32—Gas-filled discharge tubes
    • H01J37/32431—Constructional details of the reactor
    • H01J37/3244—Gas supply means
    • 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
    • B01D53/007—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 irradiation
    • 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
    • B01D53/323—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 by electrostatic effects or by high-voltage electric fields
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J19/08—Processes employing the direct application of electric or wave energy, or particle radiation; Apparatus therefor
    • B01J19/087—Processes employing the direct application of electric or wave energy, or particle radiation; Apparatus therefor employing electric or magnetic energy
    • B01J19/088—Processes employing the direct application of electric or wave energy, or particle radiation; Apparatus therefor employing electric or magnetic energy giving rise to electric discharges
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J19/26—Nozzle-type reactors, i.e. the distribution of the initial reactants within the reactor is effected by their introduction or injection through nozzles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2259/00—Type of treatment
    • B01D2259/80—Employing electric, magnetic, electromagnetic or wave energy, or particle radiation
    • B01D2259/818—Employing electrical discharges or the generation of a plasma
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J2219/00049—Controlling or regulating processes
    • B01J2219/00051—Controlling the temperature
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J2219/08—Processes employing the direct application of electric or wave energy, or particle radiation; Apparatus therefor
    • B01J2219/0803—Processes employing the direct application of electric or wave energy, or particle radiation; Apparatus therefor employing electric or magnetic energy
    • B01J2219/0805—Processes employing the direct application of electric or wave energy, or particle radiation; Apparatus therefor employing electric or magnetic energy giving rise to electric discharges
    • B01J2219/0845—Details relating to the type of discharge
    • B01J2219/0849—Corona pulse discharge

Definitions

  • This invention concerns a method and apparatus for delivery of
  • exogenous non-thermal plasma activated species to a subject fluid
  • This invention addresses air pollution control as well as an
  • nitric oxide in flue gas is rapidly converted into nitrogen and oxygen (desirable products) by nitrogen atoms generated in an electric
  • the present invention entails a method of delivery of exogenous
  • non-thermal plasma activated species to a subject fluid comprising
  • species is in less than about 10 milliseconds, and particularly in less than about 5 milliseconds or less, and more particularly in less than about 1
  • step (a) At least about 50% of activated species created in step (a) is delivered to
  • said subject fluid and in certain embodiments at least about 1 0% of
  • activated species created is delivered in less than about 10 milliseconds to
  • species to the subject fluid is within about 10 mm or less, 5mm or less,
  • the method also comprises the step of engaging at least
  • pressure differential above the subject fluid of from about 5 to about 50
  • the claimed method also includes introducing of activated species
  • back flow or retrograde flow is a consideration such as when the
  • the claimed method further includes creating of activated species is
  • combination comprise a self switching high-voltage electrode.
  • the energizing means provides up to about 750 joules/liter, or up to about
  • non-thermal plasma activated species and in particular embodiments the
  • injection means is a slot or circular jet aperture (e.g. , about 0.2 to about 5
  • a body comprises a high dielectric insulating tube having a front end nearer to a reaction chamber and a rear end away
  • the high speed injection means has a front
  • a high voltage electrode within the high dielectric insulating tube is a high voltage electrode
  • the apparatus further comprises a ground return shield and
  • reaction chamber wherein said electric discharge to reaction chamber
  • means further comprises a closure means.
  • Fig. 1 is an enlarged cross-sectional view of particular high speed
  • injection means here a needle style jet, for activated species injection
  • Fig 1 a is the variation on the design in Fig.1 including a wire or
  • Fig. 2 is an enlarged cross-sectional side view of a slit style
  • Fig. 2a is an external, jet output end view of the apparatus of Fig 2.
  • Fig. 3 is an end view of an array of curved slit style jets for high speed injection.
  • Fig. 4 is a side view of a stacked array of curved slit style jets for high speed injection.
  • Fig. 5 is a diagrammatic representation of an apparatus for
  • activated species injection for treatment of fluids (liquid or gas) carrying particulates or droplets of liquid.
  • Fig. 6 is a diagrammatic representation of an apparatus for
  • Fig. 7 is a diagrammatic representation of an apparatus for multiple
  • Fig. 8 is a diagrammatic representation of an apparatus for
  • Fig. 9 is a diagrammatic representation of an apparatus for
  • FIG. 10 is another diagrammatic representation of an apparatus for
  • Fig. 1 1 is another diagrammatic representation of an apparatus for
  • Active species are designated by “•” as in N « for active
  • eV electron volt
  • reaction chamber is 1 0 mm or less, and particularly 5 mm or less and
  • Ozone is generally considered a pollutant if it
  • N 2 molecular nitrogen in near ambient temperature air (about 65 °-75 °F)
  • NO in combustion exhaust is typically from about 10 to about 1000
  • ultraviolet light as active species from the jet, will be of primary concern.
  • a conventional ozone generator does not provide these other short lived
  • the present invention will produce activated oxygen that reacts with molecular oxygen to, secondarily, produce
  • subject fluid This can be accomplished by a variety of methods.
  • Such method is to change the composition of gas flowing into a jet to
  • Energizing shall mean imparting to a molecular moiety at least
  • Energizing means shall be the source of energy for energizing
  • molecular moieties and shall include coronal discharge, arcs, radio
  • a combustion exhaust stream is treated by activated species
  • primary activated species is atomic nitrogen
  • subject fluid can be a
  • exogenous species for activation is the chemical modification of subject
  • gas is used as chemical feedstock for a process which generates the
  • Fluid-external system refers to a system not in fluid
  • High Dielectric refers to a dielectric constant approximately of
  • zirconia zirconia, magnesia or a titanate (e.g. calcium, zinc or barium), and
  • TiO 2 are high dielectrics.
  • speed injection will be understood to mean a speed of injection sufficient
  • subject fluid are from about one to about five times the stoichiometrically
  • subject fluid where the target reactions are planned, and in particular
  • embodiments at least about 1 0%, 20%, 30%, 40%, and 50%.
  • N has a half-life is less than about 10
  • activated species are injected into subject fluid when the
  • point of generation is within less than about 3m feet from the end of the
  • injection means where it is inserted into the fluid.
  • the transport of activated species will not exceed one foot
  • an energizing means located within millimeters of the end
  • activated species to the subject fluid is advantageous. Additionally,
  • jet exit gas velocities of about
  • injection means shall mean an apparatus for generation of highly reactive
  • Such activated species are introduced into a subject fluid, such as into a
  • species ultimately flows into the subject fluid can be of a variety of
  • species into a subject fluid typically will consist of both numerical
  • the experimental optimization includes measured chemical
  • composition of the subject fluid gas pressures, injection velocities and
  • gas jets may further include the
  • optimization will include
  • injection means is simply
  • the injection means port is closed or covered over.
  • injection means is separated from the subject fluid. Separation is
  • liquid subject fluid by withdrawing, repositioning, or reducing the level of
  • Non-thermal plasma shall mean low temperature or non-
  • Plasma shall mean a partly
  • a gas as a whole is partially ionized if a fraction of the gas
  • helium has a total of 2 electrons when electrically neutral.
  • He + + is also called an alpha particle
  • N 2 to N « is insignificant except at temperatures above about 4000K.
  • the process is directed to NO removal by chemical reduction of
  • volume averaged concentration of N » is approximately 1 .5 to 3
  • One nitrogen dissociation can yield two N » , so between 0.75 and 1 .5
  • the NO x concentration need only be reduced by
  • L. Potential contact shall mean that the activated species is in a
  • reactive proximity is meant that activated species are present in the subject fluid such that, in some
  • target reactions can occur.
  • composition of the exogenous gas is adjusted to provide a bias in the
  • the exogenous gas consists of
  • substantially pure nitrogen or in another embodiment, water saturated O 2 .
  • N is the active species
  • two N* species recombining into a
  • reaction is termed substantially total if about
  • SO x refers to oxides of sulfur including, SO 2 , H 2 SO 4 , H 2 S, CH 3 SH,
  • Subject fluid shall be expansively understood to mean a liquid or
  • embodiments contain volatilized compounds such as chlorocarbons,
  • embodiments contain particulates, and biological organisms, or transport
  • soot paper pulp fibers such as
  • target reactions is expansively used and - while it encompasses "desired
  • range of about 100°C to 1 5°C are useful in the present invention.
  • NO is the energy required to dissociate NO into N» and O «, which is
  • electron beam sources especially sealed electron beam tubes such as those manufactured by AIT Corporation (Los Angeles, CA),
  • activated species By way of example, removing NO from flue gas
  • the rate of the reaction of the injected N» with NO to produce N 2 + O « is approximately 300 times greater than the rate of
  • the subject fluid and the injected gas provides critical control of the
  • N recombines rapidly
  • useful activated species is from about 0.1 to about 10 milliseconds.
  • useful injection times are from about 0.1 to about 1 0 milliseconds
  • Jet speeds of about 1 0 to
  • pressure is at least about twice the pressure of the subject fluid is noted.
  • a high energy electron beam contributes a
  • corona discharge or electron beam can select for a
  • UV light in about the ultraviolet range ( ⁇ 400 nm).
  • control, injection speed, and means of excitation contribute to the
  • the activated species jet exits the jet mechanism, driven by the
  • combustion exhaust (the subject fluid) is expected to be smaller than 5%
  • single needle jet is about 5 to 40 scfh flow of the working gas, about 3 to
  • the upper limit in diameter is determined by the mechanism of
  • aperture diameters as small as about 0.001 inch
  • Narrow slit aperture jets in one embodiment, are formed by the
  • the internal electrodes of slit type jets were either centered or off-center
  • Jets arrays were formed by an assembly of the slit type
  • the electrodes directly form the slit jet
  • the slit jet is
  • Electric power for the jets is provided by any number of sources.
  • open circuit voltages up to 30 kV are useful.
  • discharge sources are high voltage (typically > 5 kV) DC or AC (e.g. 60Hz to radio
  • microwave radiation particularly for slit jets incorporating high
  • electron beam sources e.g. modular units in about the
  • Fig. 1 is a diagrammatic representation of high speed injection
  • a high dielectric insulating tube (2) comprises the body of the jet.
  • the jet itself has a front hole or port (10) where the jet enters the reaction
  • the high dielectric insulating tube (2) is a high voltage electrode.
  • this high voltage electrode is (6) and is in tubular form, but in Fig 1 a the
  • the high voltage electrode is (22) in the shape of a wire. In both Figs. 1 and 1 a the high voltage electrode extends toward, but not fully to, the front of the jet,
  • Flow path (14) comprises
  • tubular electrode (6) the interior of tubular electrode (6) or the surrounding of wire electrode
  • said tube is a ground return shield and electrode (4).
  • electrode (6) or (22) is in fluid connection between the jet gas inlet (1 2)
  • blower (13) The space between the two blower (13).
  • reaction chamber (1 6) is a stream of activated species which (1 7) which,
  • UV light in particular embodiments, is accompanied by UV light.
  • Tube (2) is glass with a 6 mm OD, 2 mm ID and is 15 cm long. Tube (2) was
  • stainless steel jacket (4) was closed at the front end except for a central
  • the internal volume of the jet structure containing the discharge volume was constructed to
  • Figs. 1 and 1 a The apparatus of Figs. 1 and 1 a is operated at a variety f power
  • Figures 1 and 1 a exhibit self-switching discharge. Self-switching
  • High voltage will be understood to mean voltages from about
  • the 60 Hz applied voltage approximates
  • atomic nitrogen is generated 1 mm up stream of a jet exit aperture
  • the velocity is 100 m/second, less than 1 % of the atomic nitrogen will be
  • combustion exhaust is typically from 10 to 1 ,000 times faster than the
  • reactor is designed for jet penetration and mixing of approximately 1 0 cm
  • FIG. 2 and 2a An examples of slit jet construction is shown in Figs. 2 and 2a.
  • Fig. 2 is a cutaway side view of an injection, and Fig. 2a is an outside
  • ends of the electrodes (54 and 56) are in electrical connection with a power source (53). There is no fundamental restriction on the length of
  • Figure 3 is a cutaway end on view of one design approach to
  • the electrodes are
  • Fig. 4 shows a variation of the slot-type jets depicted in Figs. 2 and
  • slots (109) are circumferential with jets (106) emerging outwardly in a
  • Variations on this design include a cylindrical structure with jets emerging inward radially in a ring, mixing with the subject fluid in a tube
  • Fig. 1 1 shows jets emerging inward radially in a ring, mixing with
  • the subject fluid in a tube or pipe.
  • the subject fluid (502) enters the
  • Fig. 5 is a schematic representation of an apparatus for the
  • Suitable power sources include an
  • flow is from an
  • Subject fluid is variously gaseous, liquid, or suspensions, and include solid
  • Fig. 5 is representative of the apparatus used to study NO x
  • Fig. 5 also represents the apparatus used to establish the ability of
  • the injectors to perform bleaching of dyes and of paper pulp.
  • Fig 6. is a schematic representation of an apparatus for the
  • Jet injector (254) is supplied with
  • reaction zone (21 2) e.g. chemical scrubbing, filtration, condensation.
  • Fig 7 is a schematic representation of an apparatus for treatment of
  • each jet is a jet
  • Jet injectors prepare an independent activated species This embodiment also contemplates the interaction of two or more injected jets. Jet injectors
  • Figure 7 also represents one means of installing
  • Fig. 8 is a schematic representation of an apparatus for the
  • Jet injector (354) is supplied with high speed gas
  • a reactor (358) which contains subject fluid (static or flowing). Flow is
  • Fig. 9 is a schematic representation of an apparatus for the
  • Jet injector
  • Activated species jets are injected through an opening (405) into a reactor
  • Fig. 9 is representative of laboratory experiments
  • opening (405) is raised above level (407).
  • closure means (409) sealingly occludes opening (405).
  • Closure means (409) is variously a plug or valve or a closeable diaphragm.
  • biocidal action is useful for ventilation air entering an
  • an airborne pathogen e.g. , mycobacterium, bacterium, virus, prion
  • activated species through a liquid or slurry reduce or eliminate pathogens
  • this invention is useful in eliminating organisms
  • Another embodiment of the present invention is
  • One or more jets of activated species are directed to gas phase chemistry.
  • activated species in the form of hydroxyl radicals in the form of hydroxyl radicals
  • hydroxyl radicals are mixed with a gas phase in conjunction with desired
  • the present invention is useful as an
  • electrochemical couple as part of an electrochemical or electrolytic cell.
  • the electrode potentials are
  • the present invention has the ability to chemically react NO in the
  • Electric discharge power OFF 28 ppm NO, 4 ppm NO2, 1 ppm HNO3
  • Example 1 Chemical reduction in a combustion exhaust using active nitrogen jets
  • the combustion gas to be tested was generated in a natural gas
  • the apparatus comprised 3
  • the gas stream had 1 .8% 02 bearing combustion
  • the combustion gas to be tested was generated in a propane gas fired
  • Test conditions included 8 nitrogen jets
  • the gas stream tested was 5% O 2 bearing combustion exhaust at 80°F,
  • Electric discharge power OFF 40 ppm NO, 38 ppm NO2, 2 ppm HNO3
  • Electric discharge power ON 0 ppm NO, 4 ppm NO2, 36 ppm HNO3.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Analytical Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • General Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Organic Chemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • Treating Waste Gases (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)

Abstract

Cette invention concerne un procédé et un appareil permettant l'apport d'espèces exogènes activées par plasma non thermique à un fluide objet, ledit procédé consistant (a) à créer des espèces activées dans un organe délivrant de l'énergie, et (b) à introduire lesdites espèces activées dans un fluide objet au moyen d'un organe d'injection à grande vitesse.
PCT/US1997/016556 1996-09-20 1997-09-17 Preparation et utilisation d'especes chimiques fortement reactives generees de maniere independante Ceased WO1998011982A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU44848/97A AU4484897A (en) 1996-09-20 1997-09-17 Preparation and use of independently generated highly reactive chemical species

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US2615396P 1996-09-20 1996-09-20
US60/026,153 1996-09-20
US08/931,738 1997-09-16
US08/931,738 US6030506A (en) 1997-09-16 1997-09-16 Preparation of independently generated highly reactive chemical species

Publications (1)

Publication Number Publication Date
WO1998011982A1 true WO1998011982A1 (fr) 1998-03-26

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PCT/US1997/016556 Ceased WO1998011982A1 (fr) 1996-09-20 1997-09-17 Preparation et utilisation d'especes chimiques fortement reactives generees de maniere independante

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WO (1) WO1998011982A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999028015A1 (fr) * 1997-12-03 1999-06-10 Applied Plasma Physics As Procede et appareil de traitement d'effluents par un plasma non thermique
WO2000043106A1 (fr) * 1999-01-21 2000-07-27 Tiberian Industries, Inc. Procede et dispositif d'oxydation du monoxyde d'azote au moyen de composes oxydants irradies
US6345497B1 (en) 2000-03-02 2002-02-12 The Regents Of The University Of California NOx reduction by electron beam-produced nitrogen atom injection
WO2003068369A1 (fr) * 2002-02-15 2003-08-21 Bcde Group Waste Management Ltd Oy Procede, appareil et generateur d'oxygene singulet pour l'epuration de gaz
EP2786800A1 (fr) * 2013-04-02 2014-10-08 Steffen Emmerich Générateur d'ions pour la désinfection (traitement) d'eau et de l'air avec de l'oxygène ionisé

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4076606A (en) * 1975-01-29 1978-02-28 Kabushiki Kaisha Pollution Preventing Research Laboratory Method of decomposing nitrogen oxide (NOx)
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
US5439568A (en) * 1992-12-18 1995-08-08 E. C. Chemical Co., Ltd. Method for treating ozone layer depleting substances
US5458748A (en) * 1990-07-19 1995-10-17 Thermo Power Corporation Coronal-catalytic apparatus and method for NOx reduction
US5468356A (en) * 1991-08-23 1995-11-21 The United States Of America As Represented By The Secretary Of The Navy Large scale purification of contaminated air
US5526641A (en) * 1993-02-18 1996-06-18 The University Of Chicago NOx reduction method
US5547651A (en) * 1995-04-17 1996-08-20 Sol Bleiweis Process for production and use of deactivated gaseous atomic nitrogen for post combustion gas nitric oxide emissions control

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4076606A (en) * 1975-01-29 1978-02-28 Kabushiki Kaisha Pollution Preventing Research Laboratory Method of decomposing nitrogen oxide (NOx)
US5458748A (en) * 1990-07-19 1995-10-17 Thermo Power Corporation Coronal-catalytic apparatus and method for NOx reduction
US5468356A (en) * 1991-08-23 1995-11-21 The United States Of America As Represented By The Secretary Of The Navy Large scale purification of contaminated air
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
US5439568A (en) * 1992-12-18 1995-08-08 E. C. Chemical Co., Ltd. Method for treating ozone layer depleting substances
US5526641A (en) * 1993-02-18 1996-06-18 The University Of Chicago NOx reduction method
US5547651A (en) * 1995-04-17 1996-08-20 Sol Bleiweis Process for production and use of deactivated gaseous atomic nitrogen for post combustion gas nitric oxide emissions control

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999028015A1 (fr) * 1997-12-03 1999-06-10 Applied Plasma Physics As Procede et appareil de traitement d'effluents par un plasma non thermique
WO2000043106A1 (fr) * 1999-01-21 2000-07-27 Tiberian Industries, Inc. Procede et dispositif d'oxydation du monoxyde d'azote au moyen de composes oxydants irradies
US6423277B1 (en) 1999-01-21 2002-07-23 Ica Trinova Llc Method and apparatus for improving oxidation of nitric oxide using irradiated oxidizing compounds
US6345497B1 (en) 2000-03-02 2002-02-12 The Regents Of The University Of California NOx reduction by electron beam-produced nitrogen atom injection
WO2003068369A1 (fr) * 2002-02-15 2003-08-21 Bcde Group Waste Management Ltd Oy Procede, appareil et generateur d'oxygene singulet pour l'epuration de gaz
EP2786800A1 (fr) * 2013-04-02 2014-10-08 Steffen Emmerich Générateur d'ions pour la désinfection (traitement) d'eau et de l'air avec de l'oxygène ionisé

Also Published As

Publication number Publication date
AU4484897A (en) 1998-04-14

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