WO1999034901A1 - Catalyseur a base de ferrierite/fer pour la reduction catalytique de la teneur de gaz en protoxyde d'azote, son procede d'obtention et son application - Google Patents
Catalyseur a base de ferrierite/fer pour la reduction catalytique de la teneur de gaz en protoxyde d'azote, son procede d'obtention et son application Download PDFInfo
- Publication number
- WO1999034901A1 WO1999034901A1 PCT/FR1998/002747 FR9802747W WO9934901A1 WO 1999034901 A1 WO1999034901 A1 WO 1999034901A1 FR 9802747 W FR9802747 W FR 9802747W WO 9934901 A1 WO9934901 A1 WO 9934901A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- ferrierite
- iron
- gases
- exchanged
- catalyst
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B21/00—Nitrogen; Compounds thereof
- C01B21/20—Nitrogen oxides; Oxyacids of nitrogen; Salts thereof
- C01B21/24—Nitric oxide (NO)
- C01B21/26—Preparation by catalytic or non-catalytic oxidation of ammonia
- C01B21/265—Preparation by catalytic or non-catalytic oxidation of ammonia characterised by the catalyst
-
- 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
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
- B01D53/8621—Removing nitrogen compounds
- B01D53/8625—Nitrogen oxides
- B01D53/8628—Processes characterised by a specific catalyst
-
- 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
- B01J29/00—Catalysts comprising molecular sieves
- B01J29/88—Ferrosilicates; Ferroaluminosilicates
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/40—Nitrogen compounds
- B01D2257/402—Dinitrogen oxide
-
- 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
- Y02C—CAPTURE, STORAGE, SEQUESTRATION OR DISPOSAL OF GREENHOUSE GASES [GHG]
- Y02C20/00—Capture or disposal of greenhouse gases
- Y02C20/10—Capture or disposal of greenhouse gases of nitrous oxide (N2O)
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/151—Reduction of greenhouse gas [GHG] emissions, e.g. CO2
Definitions
- the invention falls within the general framework of reducing the content of greenhouse gases in gaseous effluents of industrial origin discharged into the atmosphere. We are talking about the reduction of nitrous oxide N2O in gaseous emissions.
- nitric oxides which combine easily with water to form nitrous or nitric acids, the most spectacular manifestations of which are undoubtedly acid rain with subsequent destruction of forests and degradation of exposed monuments, and the most insidious, the contamination of breathing air and its impact on public health.
- NOx nitric oxides
- N 2 O While the most important sources of N 2 O are the oceans, uncultivated land, agriculture, the burning of biomass and the use of fossil fuels, the chemical industry contributes around 5-10% to the emission of this gas.
- a catalyst consisting of agglomerates formed from 80 to 90% of a ferrierite / iron titrating from 1 to 6% of iron, and preferably from 2 to 4%, and from 20 to 10% by weight of an agglomeration binder (weight percentages based on the weight of the granule).
- Ferrierite / iron is the active element of the catalyst according to the invention.
- One parallel to the c axis of the structure formed by channels of elliptical section (0.43 nm X 0.55 nm) of approximately 0.18 n 2 (18A ° 2 ), the other parallel l ' b axis and c axis of the structure, with channels formed of 8-link rings, with axes 0.34 X 0.48 nm.
- the ferrierite structure is perfectly characterized by its X-ray diffraction diagram. (For inter-reticular distances, see Breck "The Synthetic Zeolites", 1974 edition, table 4.45, p. 358).
- This ferrierite / iron is obtained by subjecting a commercial ferrierite, of the sodium / potassium type, to exchange with an aqueous solution of an iron salt so as to obtain the desired iron content.
- the corresponding operating procedures are well known to those skilled in the art.
- This exchange can be carried out either using a solution of ferric salt, or using a solution of ferrous salt.
- ferrous sulfate which is a product at very low prices and that does not introduce ⁇ chlorides, corrosion sources in the preparation.
- Ferrierite / iron obtained from the ammonium form of ferrierite has the characteristic of having a very low content of alkali ions in the exchange position. It is the low content of potassium ions (less than 0.5% by weight) which analytically signals this preferred form of the catalyst of the invention.
- the ferrierites / iron according to the invention contain only 0.5 to 0.1% potassium.
- the catalysts according to the invention are put in the form of agglomerates, a presentation which is necessary for reasons of minimizing the pressure drop as they pass through the catalyst bed.
- the agglomeration of zeolites is well known to those skilled in the art. This is done by pasting the zeolite powder with a binder generally fluidized by water, often consisting of a clay which is at the same time sufficiently plastic to be able to form the agglomerated ball in a plate, in pellets by molding or in yarns. spinning press, and hardenable by baking to give cohesion and sufficient hardness to the agglomerate.
- the clays used are kaolinites, attapulgites, bentonites, halloysite or mixtures of these clays.
- agglomeration with peptized aluminas gives very resistant granules, this mode of agglomeration being possible here because the ferrierite is not degraded by the acidity of the binder.
- the granules are thermally activated.
- they are subjected to baking carried out in air, at a temperature of approximately 400 ° C., the role of which is both to harden the binder, dehydrate without degrading the hydrothermally, and in the "case of ferrierite exchanged from an ammonium form, eliminating much of the ammonium ions and zeolite to form H can also start by agglomerating the sodium ferrierite / potassium hydroxide, then harden it by calcination, and proceed to the exchanges on the agglomerate After drying, a second calcination makes it possible to put the ferrierite / iron in H form if the ferrierite used has been taken in ammonium form.
- This catalyst is the improved catalytic means of a process for destroying N2O, contained in a gas mixture, according to the overall reaction:
- This process which is also one of the objects of the present invention, consists in passing the gases to be purified, the range of N2O concentrations of which ranges from 500 ppm to 50 %, in H2O from 0.5 to 5% and in NO from 50 to 2000 ppm, through a catalyst bed placed in an axial or radial flow reactor, maintained at a temperature between 350 and 600 ° C.
- the initiation of the reaction may be facilitated by preheating, during the start-up phase, the gas flow or the catalyst by an external means, the temperature of the catalytic bed then maintaining itself due to the exothermicity of the reaction.
- heat exchangers or “quench” type devices may advantageously be immersed within the catalytic bed to control the temperature of the latter, part of the heat possibly being used to preheat the gas to be treated.
- the ferrierite / iron according to the invention retains an activity notorious with respect to N2O in the presence of water. This activity " is very strongly amplified in the presence of NO, and this is a very favorable factor, because this synergy develops for very low NO levels, of the order of 50 ppm and that the gases capable of such treatment almost always contain such traces of NO.
- the process according to the invention finds its application, in particular for the treatment of tail gases from nitric acid workshops, taken both before and after DENOx treatment, gases which may have compositions comprised within the following limits,
- the process is also applicable to the treatment of gases from organic oxidation workshops with nitric acid from organic chemistry, in particular in the manufacture of adipic acid, glyoxal and glyoxilic acid.
- gases whose approximate composition, before possible dilution with air, is as follows
- the exchanged zeolite powder is dried in an oven at 100 ° C., then mixed with a silica sol of 40% by weight of SiO 2, in an amount such as the silica content SiO 2 relative to the dry SiO 2 + zeolite unit. or 10%.
- the paste obtained is dried at 100 ° C for 6 hours, then reduced to a powder in a mortar.
- the powder is pelletized into pellets 5 mm in diameter which are activated in the oven at 400 ° C in air for 2 hours. After cooling, the pellets are crushed and sieved to 0.5 - 1 mm, this fraction constituting the catalyst.
- the reactor has a diameter of 15 mm.
- the volume of catalyst used is 10 cm 3 , or a bed 57 mm high.
- the reaction gas is prepared from compressed air, nitrogen and standard gas, N2O in N 2 at 2%, NO in N2 at 2%.
- the water vapor content is adjusted by saturator, according to the vapor pressure laws.
- the analyzes of N 2 0 are carried out by infrared, the analyzes of NOx by chemiluminescence. The results are expressed as the conversion rate of N 2 0 into N2.
- Ferrierite is supplied by TOSOH. Its Si / Ai ratio is 8.85, and its Na and K contents on dry product after calcination at 1000 ° C. are 0.92% and 4.7% respectively. Given its loss on ignition at 1000 ° C of 25%, its formula is established at
- the iron, potassium and sodium contents on dry product (1000 ° C) are respectively 2.7%, 2.8% and 0.16%. These quantities can be varied by varying the temperature, the duration of the exchanges and their number.
- the ferric exchange on ferrierite previously exchanged with ammonium ions is carried out as follows.
- a first exchange is carried out with 0.5 liters of an ammonium nitrate solution at 800 g / l at a temperature of 80 ° C for 4 hours.
- the exchanged product is recovered, washed, dried as above. Its sodium content is less than 0.1% and its potassium content less than 0.15%.
- the ferric exchange is then carried out as above, but by two successive exchanges.
- the sequence of operations is the same as in Example 1.
- An iron ferrierite is obtained, the iron, potassium and sodium contents of which are 2.2%, 0.15% and less than 0.1% respectively. These quantities can be varied by varying the temperature, the duration of the exchanges and their number. So we got
- the gas may also contain NO nitrogen oxide or water or not.
- the specific conditions of the test are as follows
- the ferrierite is the reference ferrierite 2.2 of Example 2.
- extrusions of 20% of aluminous binder are formed as follows.
- An alumina of Type NG supplied by the company CONDEA is used for the manufacture of the agglomerated catalyst.
- its peptization is carried out, by introducing into a continuous mixer alumina at a rate of 15 kg / h and nitric acid at 5% by weight with a flow rate of 0.16 1 / min.
- 5 kg of the peptized alumina gel thus obtained are mixed with 10 kg of powdered ferrierite, in Na, K form as supplied by TOSOH (see example 1) in a conventional powder mixer.
- the mixture resulting feeds an extruder mixer together with "
- the extruder is a REDCO type device from the company AOUSTIN, with a diameter of 5 cm, fitted at the outlet of a die forming extrudates with a diameter of 3.8 mm which are cut into elements from 5 to 10 mm long.
- the extrudates are then passed through a muffle furnace under air sweeping, in a thickness of approximately 15 mm, at 100 ° C. for
- the iron is then exchanged according to the same principle with 1 liter of iron sulphate solution (Fe 2+ ) at 280 g / 1 in FeS0 4 , 7H 0 at 80 ° C for 3 hours, followed by a washing by successive soaking in 1 liter of demineralized water, and drying.
- the iron content on dry product (1000 ° C) is 1.6%.
- the catalyst thus prepared is subjected to the catalytic test described above in a reactor 25 mm in diameter.
- the volume of catalyst is 25 cm 3 , ie a height of approximately 5 cm.
- the catalytic test is applied under conditions 1 to 4 of Example 2. We obtain:
Abstract
Description
Claims
Priority Applications (11)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US09/582,622 US6682710B1 (en) | 1997-12-31 | 1998-12-16 | Catalytic reduction of nitrous oxide content in gases |
PL341287A PL194755B1 (pl) | 1997-12-31 | 1998-12-16 | Katalizator konwersji N₂O, sposób zmniejszania zawartości podtlenku azotu w gazach oraz sposób wytwarzania katalizatora konwersji N₂O |
IL13619898A IL136198A0 (en) | 1997-12-31 | 1998-12-16 | Catalyst based on ferrierite/iron for catalytic reduction of nitrous oxide content in gases, method for obtaining same and application |
HU0100604A HU230552B1 (hu) | 1997-12-31 | 1998-12-16 | Ferrierit/vas zeolit vegyület, N2O átalakítására szolgáló katalizátor és eljárás ilyen katalizátor előállítására, valamint eljárás gázok N2O tartalmának csökkentésére, és az eljárás alkalmazása |
AU17642/99A AU755129B2 (en) | 1997-12-31 | 1998-12-16 | Catalyst based on ferrierite/iron for catalytic reduction of nitrous oxide content in gases, method for obtaining same and application |
BRPI9814593-2A BR9814593B1 (pt) | 1997-12-31 | 1998-12-16 | composição zeolìtica de ferrierita/ferro, catalisador de conversão de n2o, processo para sua preparação e processo para redução do teor de protóxido de nitrogênio em gases. |
EA200000727A EA001894B1 (ru) | 1997-12-31 | 1998-12-16 | Катализатор на основе ферриерит/железо для каталитического снижения содержания газа закиси азота, способ его получения и его применение |
ROA200000578A RO119864B1 (ro) | 1997-12-31 | 1998-12-16 | Catalizator pentru reducerea conţinutului de protoxid de azot, din gaze conţinând n2o, procedeu de obţinere şi de utilizare a acestuia |
CA002315345A CA2315345C (fr) | 1997-12-31 | 1998-12-16 | Catalyseur a base de ferrierite/fer pour la reduction catalytique de la teneur de gaz en protoxyde d'azote, son procede d'obtention et son application |
HR20000512A HRP20000512B1 (en) | 1997-12-31 | 2000-07-31 | Catalyst based on ferrierite/iron for catalytic reduction of nitrous oxide content in gases, method for obtaining same and application |
US10/724,173 US7238641B2 (en) | 1997-12-31 | 2003-12-01 | Catalyst based on ferrierite/iron for catalytic reduction of nitrous oxide |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9716803A FR2773144B1 (fr) | 1997-12-31 | 1997-12-31 | Catalyseur a base de ferrierite/fer pour la reduction catalytique de la teneur de gaz en protoxyde d'azote. son procede d'obtention. application au traitement de gaz industriels |
FR97/16803 | 1997-12-31 |
Related Child Applications (3)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US09582622 A-371-Of-International | 1998-12-16 | ||
US09/582,622 A-371-Of-International US6682710B1 (en) | 1997-12-31 | 1998-12-16 | Catalytic reduction of nitrous oxide content in gases |
US10/724,173 Division US7238641B2 (en) | 1997-12-31 | 2003-12-01 | Catalyst based on ferrierite/iron for catalytic reduction of nitrous oxide |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1999034901A1 true WO1999034901A1 (fr) | 1999-07-15 |
Family
ID=9515380
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR1998/002747 WO1999034901A1 (fr) | 1997-12-31 | 1998-12-16 | Catalyseur a base de ferrierite/fer pour la reduction catalytique de la teneur de gaz en protoxyde d'azote, son procede d'obtention et son application |
Country Status (21)
Country | Link |
---|---|
US (2) | US6682710B1 (fr) |
CN (1) | CN100377764C (fr) |
AU (1) | AU755129B2 (fr) |
BG (1) | BG64728B1 (fr) |
BR (1) | BR9814593B1 (fr) |
CA (1) | CA2315345C (fr) |
CO (1) | CO5050382A1 (fr) |
CZ (1) | CZ300579B6 (fr) |
DZ (1) | DZ2694A1 (fr) |
EA (1) | EA001894B1 (fr) |
FR (1) | FR2773144B1 (fr) |
HR (1) | HRP20000512B1 (fr) |
HU (1) | HU230552B1 (fr) |
IL (1) | IL136198A0 (fr) |
MA (1) | MA24731A1 (fr) |
PL (1) | PL194755B1 (fr) |
RO (1) | RO119864B1 (fr) |
TN (1) | TNSN98233A1 (fr) |
TR (1) | TR200001841T2 (fr) |
WO (1) | WO1999034901A1 (fr) |
ZA (1) | ZA9811945B (fr) |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2001051182A1 (fr) * | 2000-01-14 | 2001-07-19 | Krupp Uhde Gmbh | PROCEDE POUR ELIMINER DU NOx ET N2O CONTENUS DANS LE GAZ RESIDUAIRE PROVENANT DE LA PRODUCTION D'ACIDE NITRIQUE |
US7238641B2 (en) | 1997-12-31 | 2007-07-03 | Grande-Paroisse S.A. | Catalyst based on ferrierite/iron for catalytic reduction of nitrous oxide |
KR100785645B1 (ko) | 2000-01-14 | 2007-12-14 | 우데 게엠베하 | Nox 및 n2o의 함량을 감소시키기 위한 장치 및 방법 |
WO2008049557A1 (fr) * | 2006-10-24 | 2008-05-02 | Gpn | Catalyseur a base de zeolithe de type ferrierite / fer pour la decomposition de n20 et reduction catalytique nox et n20 |
US7704474B2 (en) | 2004-05-17 | 2010-04-27 | Stichting Energieonderzoek Centrum Nederland | Method for the decomposition of N2O, catalyst therefor and preparation of this catalyst |
DE102010022775A1 (de) | 2010-06-04 | 2011-12-08 | Uhde Gmbh | Verfahren und Vorrichtung zur Beseitigung von NOx und N2O |
WO2012025630A1 (fr) | 2010-08-26 | 2012-03-01 | Institut Regional Des Materiaux Avances | Procede de decomposition catalytique du n2o a haute temperature |
WO2013087181A2 (fr) | 2011-12-16 | 2013-06-20 | Thyssenkrupp Uhde Gmbh | Dispositif et procédé pour l'élimination de nox et n2o |
Families Citing this family (15)
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DE10123402A1 (de) * | 2001-05-14 | 2002-11-28 | Fraunhofer Ges Forschung | Verfahren zum Behandeln von ammoniakhaltigen Rauchgasen |
DE10226461A1 (de) * | 2002-06-13 | 2004-01-22 | Uhde Gmbh | Verfahren und Vorrichtung zur Verringerung des Gehaltes an NOx und N2O in Gasen |
FR2913610A1 (fr) | 2007-03-16 | 2008-09-19 | Air Liquide | Procede pour eliminer le n2o d'un flux gazeux |
CN101875015B (zh) * | 2009-04-29 | 2012-06-13 | 高等技术研究院研究组合 | 用于消除一氧化二氮的催化剂制备方法 |
CN102295299B (zh) * | 2010-06-23 | 2013-01-02 | 中国科学院大连化学物理研究所 | 一种高含量骨架铁zsm-35分子筛的分步晶化合成法 |
FR2962923B1 (fr) * | 2010-07-22 | 2015-01-02 | Peugeot Citroen Automobiles Sa | Composition catalytique et dispositif de traitement des gaz comprenant une telle composition |
US8945392B2 (en) * | 2012-09-19 | 2015-02-03 | Red Lion Chem Tech, Llc | Composite for phosphate and ammonium ion removal |
CN103203159B (zh) * | 2013-04-08 | 2015-04-01 | 浙江师范大学 | 一种利用类沸石分子筛骨架材料分离氧化亚氮和二氧化碳的方法 |
CN116037220A (zh) * | 2014-02-28 | 2023-05-02 | 庄信万丰股份有限公司 | 具有改进的低温性能的scr催化剂,及其制造和使用方法 |
FR3058413A1 (fr) * | 2016-11-08 | 2018-05-11 | IFP Energies Nouvelles | Procede de deshydratation isomerisante d'une charge d'un monoalcool primaire non lineaire sur un catalyseur comprenant une zeolithe de type fer et un alcalin |
CN108793189A (zh) * | 2018-07-25 | 2018-11-13 | 中国石油大学(北京) | 分层纳米薄片镁碱沸石分子筛及其制备方法和用途 |
CZ2018398A3 (cs) | 2018-08-07 | 2019-10-02 | Vysoká Škola Báňská - Technická Univerzita Ostrava | Způsob přípravy katalyzátoru pro odstranění oxidu dusného z odpadních průmyslových plynů a katalyzátor připravený tímto způsobem |
EP3689441A1 (fr) * | 2019-02-01 | 2020-08-05 | Casale Sa | Procédé pour l'élimination d'oxydes d'azote dans un gaz |
CN111229035B (zh) * | 2020-01-21 | 2022-05-10 | 鞍钢股份有限公司 | 一种适用于烧结烟气的脱硝方法 |
FI20205806A1 (en) * | 2020-08-19 | 2022-02-20 | Teknologian Tutkimuskeskus Vtt Oy | Process for the selective catalytic reduction of nitrous oxide, process for the extraction of carbon dioxide, process for the detection of carbon dioxide, apparatus and use |
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EP0012473A1 (fr) * | 1978-12-14 | 1980-06-25 | Shell Internationale Researchmaatschappij B.V. | Procédé de préparation de ferriérite, ferriérite ainsi obtenue et son utilisation comme catalyseur ou support de catalyseur dans la conversion d'hydrocarbures et dans la séparation d'hydrocarbures |
EP0625369A1 (fr) * | 1993-05-10 | 1994-11-23 | Grande Paroisse S.A. | Procédé d'élimination de N2O dans les effluents gazeux provenant des oxydations nutriques |
WO1994027709A1 (fr) * | 1993-05-28 | 1994-12-08 | Engelhard Corporation | Catalyseur utilise dans la decomposition de l'oxyde azote |
DE4413404A1 (de) * | 1994-04-18 | 1995-10-19 | Degussa | Verfahren zur katalytischen Zersetzung von in Gasen enthaltenem Distickstoffmonoxid in die Elemente |
RU2071817C1 (ru) * | 1992-02-04 | 1997-01-20 | Институт катализа СО РАН | Способ очистки отходящих газов от оксида азота (i) |
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US5520895A (en) * | 1994-07-07 | 1996-05-28 | Mobil Oil Corporation | Method for the reduction of nitrogen oxides using iron impregnated zeolites |
US5589147A (en) * | 1994-07-07 | 1996-12-31 | Mobil Oil Corporation | Catalytic system for the reducton of nitrogen oxides |
FR2773144B1 (fr) | 1997-12-31 | 2000-02-04 | Grande Paroisse Sa | Catalyseur a base de ferrierite/fer pour la reduction catalytique de la teneur de gaz en protoxyde d'azote. son procede d'obtention. application au traitement de gaz industriels |
-
1997
- 1997-12-31 FR FR9716803A patent/FR2773144B1/fr not_active Expired - Lifetime
-
1998
- 1998-12-03 ZA ZA9811945A patent/ZA9811945B/xx unknown
- 1998-12-16 PL PL341287A patent/PL194755B1/pl unknown
- 1998-12-16 WO PCT/FR1998/002747 patent/WO1999034901A1/fr active Application Filing
- 1998-12-16 TR TR2000/01841T patent/TR200001841T2/xx unknown
- 1998-12-16 BR BRPI9814593-2A patent/BR9814593B1/pt not_active IP Right Cessation
- 1998-12-16 EA EA200000727A patent/EA001894B1/ru not_active IP Right Cessation
- 1998-12-16 CN CNB988127628A patent/CN100377764C/zh not_active Expired - Lifetime
- 1998-12-16 US US09/582,622 patent/US6682710B1/en not_active Expired - Lifetime
- 1998-12-16 CZ CZ20002483A patent/CZ300579B6/cs not_active IP Right Cessation
- 1998-12-16 IL IL13619898A patent/IL136198A0/xx not_active IP Right Cessation
- 1998-12-16 HU HU0100604A patent/HU230552B1/hu unknown
- 1998-12-16 AU AU17642/99A patent/AU755129B2/en not_active Expired
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- 1998-12-16 CA CA002315345A patent/CA2315345C/fr not_active Expired - Lifetime
- 1998-12-25 TN TNTNSN98233A patent/TNSN98233A1/fr unknown
- 1998-12-29 CO CO98077075A patent/CO5050382A1/es unknown
- 1998-12-29 DZ DZ980304A patent/DZ2694A1/fr active
- 1998-12-30 MA MA25413A patent/MA24731A1/fr unknown
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2000
- 2000-07-27 BG BG104637A patent/BG64728B1/bg unknown
- 2000-07-31 HR HR20000512A patent/HRP20000512B1/xx not_active IP Right Cessation
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EP0012473A1 (fr) * | 1978-12-14 | 1980-06-25 | Shell Internationale Researchmaatschappij B.V. | Procédé de préparation de ferriérite, ferriérite ainsi obtenue et son utilisation comme catalyseur ou support de catalyseur dans la conversion d'hydrocarbures et dans la séparation d'hydrocarbures |
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WO1994027709A1 (fr) * | 1993-05-28 | 1994-12-08 | Engelhard Corporation | Catalyseur utilise dans la decomposition de l'oxyde azote |
DE4413404A1 (de) * | 1994-04-18 | 1995-10-19 | Degussa | Verfahren zur katalytischen Zersetzung von in Gasen enthaltenem Distickstoffmonoxid in die Elemente |
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Cited By (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7238641B2 (en) | 1997-12-31 | 2007-07-03 | Grande-Paroisse S.A. | Catalyst based on ferrierite/iron for catalytic reduction of nitrous oxide |
US7485276B2 (en) | 2000-01-14 | 2009-02-03 | Uhde Gmbh | Method for the removal of Nox and N2O from the tail gas in nitric acid production |
KR100785645B1 (ko) | 2000-01-14 | 2007-12-14 | 우데 게엠베하 | Nox 및 n2o의 함량을 감소시키기 위한 장치 및 방법 |
KR100723819B1 (ko) * | 2000-01-14 | 2007-06-04 | 우데 게엠베하 | 질산 제조시에 잔류 가스로부터 질소 산화물과 아산화질소를 제거하는 방법 |
WO2001051182A1 (fr) * | 2000-01-14 | 2001-07-19 | Krupp Uhde Gmbh | PROCEDE POUR ELIMINER DU NOx ET N2O CONTENUS DANS LE GAZ RESIDUAIRE PROVENANT DE LA PRODUCTION D'ACIDE NITRIQUE |
US7704474B2 (en) | 2004-05-17 | 2010-04-27 | Stichting Energieonderzoek Centrum Nederland | Method for the decomposition of N2O, catalyst therefor and preparation of this catalyst |
US7901648B2 (en) | 2004-05-17 | 2011-03-08 | Stichting Energieonderzoek Centrum Nederland | Method for the decomposition of N2O, catalyst therefor and preparation of this catalyst |
EP1918016A1 (fr) * | 2006-10-24 | 2008-05-07 | Gpn | Catalyseur a base de zéolithe de type ferriérite / fer pour la décomposition de N20 et réduction catalytique NOx et N20 |
WO2008049557A1 (fr) * | 2006-10-24 | 2008-05-02 | Gpn | Catalyseur a base de zeolithe de type ferrierite / fer pour la decomposition de n20 et reduction catalytique nox et n20 |
DE102010022775A1 (de) | 2010-06-04 | 2011-12-08 | Uhde Gmbh | Verfahren und Vorrichtung zur Beseitigung von NOx und N2O |
WO2011151006A1 (fr) | 2010-06-04 | 2011-12-08 | Uhde Gmbh | Procédé et dispositif d'élimination de nox et n2o |
US10022669B2 (en) | 2010-06-04 | 2018-07-17 | Thyssenkrupp Industrial Solutions Ag | Process and apparatus for eliminating NOX and N2O |
WO2012025630A1 (fr) | 2010-08-26 | 2012-03-01 | Institut Regional Des Materiaux Avances | Procede de decomposition catalytique du n2o a haute temperature |
WO2013087181A2 (fr) | 2011-12-16 | 2013-06-20 | Thyssenkrupp Uhde Gmbh | Dispositif et procédé pour l'élimination de nox et n2o |
DE102011121188A1 (de) | 2011-12-16 | 2013-06-20 | Thyssen Krupp Uhde Gmbh | Vorrichtung und Verfahren zur Beseitigung von NOx und N20 |
Also Published As
Publication number | Publication date |
---|---|
AU1764299A (en) | 1999-07-26 |
CN100377764C (zh) | 2008-04-02 |
BR9814593B1 (pt) | 2010-03-09 |
EA200000727A1 (ru) | 2001-02-26 |
CN1283132A (zh) | 2001-02-07 |
RO119864B1 (ro) | 2005-05-30 |
US7238641B2 (en) | 2007-07-03 |
US6682710B1 (en) | 2004-01-27 |
CA2315345A1 (fr) | 1999-07-15 |
CZ20002483A3 (cs) | 2001-03-14 |
CZ300579B6 (cs) | 2009-06-17 |
DZ2694A1 (fr) | 2003-03-29 |
PL341287A1 (en) | 2001-04-09 |
CA2315345C (fr) | 2008-02-05 |
PL194755B1 (pl) | 2007-07-31 |
HUP0100604A3 (en) | 2010-01-28 |
HRP20000512A2 (en) | 2001-12-31 |
HRP20000512B1 (en) | 2009-03-31 |
EA001894B1 (ru) | 2001-10-22 |
BR9814593A (pt) | 2000-10-17 |
US20040192538A1 (en) | 2004-09-30 |
ZA9811945B (en) | 1999-10-22 |
IL136198A0 (en) | 2001-05-20 |
AU755129B2 (en) | 2002-12-05 |
TNSN98233A1 (fr) | 2000-12-29 |
HUP0100604A2 (hu) | 2001-06-28 |
FR2773144B1 (fr) | 2000-02-04 |
BG104637A (en) | 2001-03-30 |
TR200001841T2 (tr) | 2000-11-21 |
MA24731A1 (fr) | 1999-07-01 |
BG64728B1 (bg) | 2006-01-31 |
FR2773144A1 (fr) | 1999-07-02 |
CO5050382A1 (es) | 2001-06-27 |
HU230552B1 (hu) | 2016-11-28 |
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