DE3518192A1 - Two-stage process for purifying combustion gases - Google Patents
Two-stage process for purifying combustion gasesInfo
- Publication number
- DE3518192A1 DE3518192A1 DE19853518192 DE3518192A DE3518192A1 DE 3518192 A1 DE3518192 A1 DE 3518192A1 DE 19853518192 DE19853518192 DE 19853518192 DE 3518192 A DE3518192 A DE 3518192A DE 3518192 A1 DE3518192 A1 DE 3518192A1
- Authority
- DE
- Germany
- Prior art keywords
- stage
- excess
- oxygen
- oxide
- coal dust
- 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
Links
Classifications
-
- 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
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/92—Chemical or biological purification of waste gases of engine exhaust gases
- B01D53/94—Chemical or biological purification of waste gases of engine exhaust gases by catalytic processes
- B01D53/9459—Removing one or more of nitrogen oxides, carbon monoxide, or hydrocarbons by multiple successive catalytic functions; systems with more than one different function, e.g. zone coated catalysts
-
- 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
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/16—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
- B01J23/24—Chromium, molybdenum or tungsten
- B01J23/26—Chromium
-
- 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
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/70—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper
- B01J23/74—Iron group metals
- B01J23/745—Iron
-
- 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
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/70—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper
- B01J23/76—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36
-
- 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
-
- 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
- F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
- F01N3/021—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
- F01N3/023—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters using means for regenerating the filters, e.g. by burning trapped particles
-
- 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
-
- 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
- F01N2250/02—Combinations of different methods of purification filtering and catalytic conversion
-
- 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
- F01N2270/00—Mixing air with exhaust gases
- F01N2270/04—Mixing air with exhaust gases for afterburning
-
- 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
- F01N2290/00—Movable parts or members in exhaust systems for other than for control purposes
- F01N2290/02—Movable parts or members in exhaust systems for other than for control purposes with continuous rotary movement
-
- 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
- F01N2290/00—Movable parts or members in exhaust systems for other than for control purposes
- F01N2290/08—Movable parts or members in exhaust systems for other than for control purposes with oscillating or vibrating movement
-
- 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
- F01N2330/06—Ceramic, e.g. monoliths
-
- 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
- F01N2330/08—Granular material
-
- 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
- F01N2470/00—Structure or shape of gas passages, pipes or tubes
- F01N2470/30—Tubes with restrictions, i.e. venturi or the like, e.g. for sucking air or measuring mass flow
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/12—Heat utilisation in combustion or incineration of waste
Abstract
Description
Beschreibung description
Das Haupt-Patent (Anmeldung) P 35 02 866.1 bezieht sich auf ein Verfahren zur Reinigung von Verbrennungsgasen aus beispielsweise Kraftfahrzeugen, Haushaltsheizungen oder Müllverbrennungsanlagen von ihren umweltschädlichen Bestandteilen, insbesondere Stickoxiden, und unverbrannten Kohlenwasserstoffen, wobei nach der Erfindung des Hauptpatentes den Gasen vor der katalytischen Umsetzung Kohlenmonoxid in einer - bezogen auf die im Gas enthaltene Menge an Schadstoff - überstöchiometrischen Menge zugeführt und die sich anschließende katalytische Umsetzung in einer zweistufigen Verfahrensweise erfolgt, wobei die Umsetzung in der ersten Stufe unter hermetischem Abschluß gegen Drittsauerstoff erfolgt und dem Gas vor Eintritt in die zweite Stufe eine Überschußmenge an Drittsauerstoff zugeführt wird. Als die Reaktion unterstützende Katalysatoren finden nach dem Verfahren nach dem Hauptpatent Eisen(lll)-Oxid oder Chrom(lll)-Oxid allein oder im Gemisch mit Oxiden oder Salzen der Metalle Kupfer, Titan, Vanadin, Chrom, Molybdän, Wolfram, Mangan, Eisen, Cobalt, Nickel oder der seltenen Erden als Katalysatoren Verwendung. The main patent (application) P 35 02 866.1 relates to a method for cleaning combustion gases from, for example, motor vehicles, household heating systems or waste incineration plants of their environmentally harmful components, in particular Nitrogen oxides, and unburned hydrocarbons, according to the invention of the Main patent for the gases before the catalytic conversion of carbon monoxide in a - based on the amount of pollutant contained in the gas - overstoichiometric amount fed and the subsequent catalytic conversion in a two-stage Procedure takes place, the reaction in the first stage under hermetic Completion takes place against third oxygen and the gas before entering the second stage an excess amount of third-party oxygen is supplied. As supportive of the response Catalysts find iron (III) oxide or according to the process according to the main patent Chromium (III) oxide alone or in a mixture with oxides or salts of the metals copper, Titanium, vanadium, chromium, molybdenum, tungsten, manganese, iron, cobalt, nickel or the use rare earths as catalysts.
Die vorliegende Erfindung betrifft eine Weiterentwicklung der Erfindung nach dem Hauptpatent mit dem Ziel der Verbesserung der Reinigung der Abgase aus unter großem Sauerstoffüberschuß verlaufenden Verbrennungsprozessen, wie beispielsweise der Verbrennungsgase aus Müllverbrennungsanlagen, Kohlekraftwerken und anderen Großfeuerungsanlagen. Die Erfindung besteht darin, daß die Abgase in einer Vorstufe bei einer Temperatur von über 5500 C mit Kohlenstaub verwirbelt und nach Verbrauch des im Abgas enthaltenen Sauerstoff-Überschusses der ersten Reinigungsstufe zugeführt werden. The present invention relates to a further development of the invention according to the main patent with the aim of improving the cleaning of exhaust gases Combustion processes taking place with a large excess of oxygen, such as, for example the combustion gases from waste incineration plants, coal-fired power plants and other large combustion plants. The invention consists in that the exhaust gases in a preliminary stage at a temperature of over 5500 C swirled with coal dust and after consumption of the contained in the exhaust gas Oxygen excess are fed to the first cleaning stage.
Durch die Erfindung ist ein Verfahren geschaffen, mit dem ohne wesentlichen apparativen und verfahrenstechnischen Aufwand aus unter großem Sauerstoffüberschuß verlaufenden Verbrennungsprozessen nicht nur der die Reinigungsreaktion behindernde Sauerstoffüberschuß beseitigt sondern dieser Sauerstoff aufgrund des großen Kohlenstoffangebotes in Kohlenmonoxid umgesetzt wird, das infolgedessen als Reaktionsmittel der ersten Reinigungsstufe in einem - bezogen auf das zu beseitigende Stickoxid - in einem hohen Überschuß entsteht, wodurch die Reinigungswirkung in dieser Stufe wesentlich verbessert wird. Hierbei kann die Umsetzung in der Vorstufe beschleunigt werden durch Zugabe von Eisen(l!l)-Oxid, Aluminium-Oxid, Mangan-Oxid oder Chromoxid einer der Körnung des Kohlenstaubes entsprechenden Korngröße als Katalysator, der dem Kohlenstaub in einer Menge bis zu Gew.-20%, bezogen auf die Gesamtmenge des Einsatzmaterials, zugesetzt wird. The invention provides a method with which without essential Apparatus and process engineering effort from a large excess of oxygen ongoing combustion processes not only the one that hinders the cleaning reaction Excess oxygen eliminates this oxygen due to the large amount of carbon available is converted into carbon monoxide, which consequently acts as the reactant of the first Cleaning stage in one - based on the nitrogen oxide to be removed - in one high excess arises, whereby the cleaning effect in this stage is essential is improved. The implementation in the preliminary stage can be accelerated here by adding iron (l! l) oxide, aluminum oxide, manganese oxide or chromium oxide the grain size of the coal dust as a catalyst, the Coal dust in an amount up to 20% by weight based on the total amount of the feedstock, is added.
Die Reaktion kann in jedem beliebigen Reaktor durchgeführt werden. Vorteilhaft erfolgt die Reaktion in einem das Kohlenstaub-/Katalysator-Gemisch in unterschiedlicher Körnung enthaltenden Zyklon oder in einem außer dem Kohle-/Katalysator-Gemisch Sand als Bettmaterial enthaltenden Wirbelschichtreaktor, wobei die Reaktion der Vorstufe und die Umsetzungsreaktion der ersten Reinigungsstufe (NOx-Umsetzung) weitgehend parallel nebeneinander verlaufen. Hierbei wird die katalytische Umsetzung bevorzugt im Wirbelbett durchgeführt, in dem nicht nur eine Bindung der Schwefel- und Halogenverbindungen sondern darüberhinaus nach dem erfindungsgemäßen Verfahren auch eine katalytische Umsetzung der Stickoxide und damit eine vollständige Reinigung von Verbrennungsgasen jeglicher Herkunft erreicht wird. Als ein besonderer Vorteil ist hierbei anzusehen, daß das verbrauchte Katalysatormaterial - abgesehen davon, daß es selbst keine umweltgefährdenden Rückstände bildet - auf einfachste Weise durch Magnetabscheidung von den übrigen Aschebestandteilen abgetrennt werden kann. The reaction can be carried out in any reactor. The reaction advantageously takes place in the coal dust / catalyst mixture in Cyclone containing different grain sizes or in one other than the coal / catalyst mixture Fluidized bed reactor containing sand as bed material, the reaction of the Preliminary stage and the conversion reaction of the first purification stage (NOx conversion) to a large extent run parallel to each other. The catalytic conversion is preferred here carried out in a fluidized bed, in which not only a bond of sulfur and halogen compounds but also a catalytic one according to the process according to the invention Implementation of nitrogen oxides and thus a complete cleaning of combustion gases of any origin. A particular advantage here is to be seen that the used catalyst material - apart from the fact that it is not itself environmentally hazardous Residues forms - in the simplest way by magnetic separation from the rest Ash constituents can be separated.
Claims (5)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19853518192 DE3518192A1 (en) | 1984-09-19 | 1985-05-21 | Two-stage process for purifying combustion gases |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE3434363 | 1984-09-19 | ||
DE19853502866 DE3502866A1 (en) | 1984-09-19 | 1985-01-29 | Two-stage process and apparatus for purifying combustion gases |
DE19853518192 DE3518192A1 (en) | 1984-09-19 | 1985-05-21 | Two-stage process for purifying combustion gases |
Publications (1)
Publication Number | Publication Date |
---|---|
DE3518192A1 true DE3518192A1 (en) | 1986-11-27 |
Family
ID=27192349
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19853518192 Ceased DE3518192A1 (en) | 1984-09-19 | 1985-05-21 | Two-stage process for purifying combustion gases |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE3518192A1 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3938056A1 (en) * | 1988-11-18 | 1990-05-23 | Mitsubishi Motors Corp | Oxygen sensor - having hollow tubular element, two surfaces, two electrodes and voltage measuring circuit |
US5271816A (en) * | 1988-11-18 | 1993-12-21 | Mitsubishi Jidosha Kogyo Kabushiki Kaisha | Oxygen sensor |
FR2877692A1 (en) * | 2004-11-09 | 2006-05-12 | Peugeot Citroen Automobiles Sa | Particle filter for exhaust line of diesel engine of motor vehicle, has gas outlet end associated to magnetic field generation units attracting residues in gas and sensitive to field, where filter has honey-comb structure with porous walls |
GB2601852A (en) * | 2021-06-05 | 2022-06-15 | Lynley Ashley Adrian | Combustion gasses and particulates recycling |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3544264A (en) * | 1968-09-25 | 1970-12-01 | Universal Oil Prod Co | Method and means for two-stage catalytic treating of engine exhaust gases |
DE2001933A1 (en) * | 1970-01-16 | 1971-07-22 | Uop Kavag Ges Fuer Luftreinhal | Device for carrying out catalytic gas reactions |
DE2348295A1 (en) * | 1972-12-09 | 1974-07-04 | Hitachi Shipbuilding Eng Co | PROCEDURE FOR THE REMOVAL OF NITROGEN OXIDES FROM GASES |
GB1372160A (en) * | 1972-03-22 | 1974-10-30 | Nissan Motor | Exhaust cleaning apparatus for internal combustion engines |
DE2357804A1 (en) * | 1973-11-20 | 1975-05-28 | Werner & Pfleiderer | Exhaust gas afterburning arrangement - has combustion chambers, feed-in, fuel nozzle and reaction chamber |
DE3021479A1 (en) * | 1979-06-07 | 1980-12-11 | Mitsubishi Heavy Ind Ltd | METHOD FOR BURNING FUEL WITH REDUCED EMISSION OF NITROGEN OXIDS |
DE3145028A1 (en) * | 1981-11-12 | 1983-05-19 | Wärmetechnik Dr. Pauli GmbH & Co Betriebs-KG, 8035 Gauting | Method and device for the injection and recombustion of oxygenous exhaust gases, especially of exhaust gases from internal combustion engines |
DE3326100A1 (en) * | 1983-07-20 | 1985-02-07 | Ferdinand Lentjes, Dampfkessel- und Maschinenbau, 4000 Düsseldorf | Process and plant for the reduction of nitrogen oxides emission in flue gases and furnace plants |
-
1985
- 1985-05-21 DE DE19853518192 patent/DE3518192A1/en not_active Ceased
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3544264A (en) * | 1968-09-25 | 1970-12-01 | Universal Oil Prod Co | Method and means for two-stage catalytic treating of engine exhaust gases |
DE2001933A1 (en) * | 1970-01-16 | 1971-07-22 | Uop Kavag Ges Fuer Luftreinhal | Device for carrying out catalytic gas reactions |
GB1372160A (en) * | 1972-03-22 | 1974-10-30 | Nissan Motor | Exhaust cleaning apparatus for internal combustion engines |
DE2348295A1 (en) * | 1972-12-09 | 1974-07-04 | Hitachi Shipbuilding Eng Co | PROCEDURE FOR THE REMOVAL OF NITROGEN OXIDES FROM GASES |
DE2357804A1 (en) * | 1973-11-20 | 1975-05-28 | Werner & Pfleiderer | Exhaust gas afterburning arrangement - has combustion chambers, feed-in, fuel nozzle and reaction chamber |
DE3021479A1 (en) * | 1979-06-07 | 1980-12-11 | Mitsubishi Heavy Ind Ltd | METHOD FOR BURNING FUEL WITH REDUCED EMISSION OF NITROGEN OXIDS |
DE3145028A1 (en) * | 1981-11-12 | 1983-05-19 | Wärmetechnik Dr. Pauli GmbH & Co Betriebs-KG, 8035 Gauting | Method and device for the injection and recombustion of oxygenous exhaust gases, especially of exhaust gases from internal combustion engines |
DE3326100A1 (en) * | 1983-07-20 | 1985-02-07 | Ferdinand Lentjes, Dampfkessel- und Maschinenbau, 4000 Düsseldorf | Process and plant for the reduction of nitrogen oxides emission in flue gases and furnace plants |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3938056A1 (en) * | 1988-11-18 | 1990-05-23 | Mitsubishi Motors Corp | Oxygen sensor - having hollow tubular element, two surfaces, two electrodes and voltage measuring circuit |
US5271816A (en) * | 1988-11-18 | 1993-12-21 | Mitsubishi Jidosha Kogyo Kabushiki Kaisha | Oxygen sensor |
FR2877692A1 (en) * | 2004-11-09 | 2006-05-12 | Peugeot Citroen Automobiles Sa | Particle filter for exhaust line of diesel engine of motor vehicle, has gas outlet end associated to magnetic field generation units attracting residues in gas and sensitive to field, where filter has honey-comb structure with porous walls |
GB2601852A (en) * | 2021-06-05 | 2022-06-15 | Lynley Ashley Adrian | Combustion gasses and particulates recycling |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP0234188B1 (en) | Process for removal of oxides of nitrogen and sulphur from the exhaust gases of combustion installations | |
EP0276883B1 (en) | Process for the simultaneous denitration and desulfurization of an oxygen-containing exhaust gas | |
DE3518192A1 (en) | Two-stage process for purifying combustion gases | |
DE2127616B2 (en) | Catalyst for the treatment of exhaust gases from internal combustion engines | |
DE3430870A1 (en) | METHOD FOR EXHAUST GAS PURIFICATION | |
EP0220416B1 (en) | Catalyst for reducing nitrogen oxides | |
US3978200A (en) | Process for reduction of sulfur dioxide to sulfur | |
DE2809199A1 (en) | Sepg. dust with high electric resistance from hot waste gas - by adding catalyst to convert sulphur di:oxide into sulphur tri:oxide, then using electrostatic filters | |
EP0264810A2 (en) | Power station with a gas turbine | |
EP0348768B1 (en) | Process for eliminating nitrogen oxides from combustion exhaust gases | |
US2576763A (en) | Vanadium containing briquettes | |
DE3034020A1 (en) | REMOVAL OF SULFUR OXIDS FROM THE REGENERATOR EXHAUST GASES FROM A CATALYTIC CRACKING | |
EP0928630A1 (en) | Process for the catalytic decomposition of ammonia and hydrogen cyanide in a coke oven exhaust gas | |
DE69720785T2 (en) | REDUCTION OF NITROGEN OXIDE | |
EP0884084A3 (en) | Process for eliminating nitrogen oxides from gases | |
DE2754595A1 (en) | CATALYST FOR SULFUR OXIDATION | |
US3752775A (en) | Catalyst for oxidation and a method for producing the same | |
EP0272620A2 (en) | Process for eliminating nitrogen oxides from exhaust gases emanating from coal combustion | |
JPH0661426B2 (en) | Method of removing sulfur dioxide from flue gas | |
US4543121A (en) | Method of reducing hydrocarbon emissions occurring during iron ore sintering operations | |
DE19506864A1 (en) | Process for the catalytic treatment of flue gases | |
DE581986C (en) | Production of hydrogen or hydrogen-nitrogen mixtures from methane or methane-rich gases | |
US5021228A (en) | Control of sox emission | |
US3840642A (en) | Process and catalyst for treating combustion exhaust gas | |
DE2026185A1 (en) | Catalytic combustion of ammonia - using cheap iron - manganese oxide catalyst activated with bismuth oxide |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AF | Is addition to no. |
Ref country code: DE Ref document number: 3502866 Format of ref document f/p: P |
|
OM8 | Search report available as to paragraph 43 lit. 1 sentence 1 patent law | ||
OP8 | Request for examination as to paragraph 44 patent law | ||
8131 | Rejection |