WO2005000738A1 - Verfahren zur entfernung von n2o bei der salpetersäureherstellung - Google Patents
Verfahren zur entfernung von n2o bei der salpetersäureherstellung Download PDFInfo
- Publication number
- WO2005000738A1 WO2005000738A1 PCT/EP2004/006162 EP2004006162W WO2005000738A1 WO 2005000738 A1 WO2005000738 A1 WO 2005000738A1 EP 2004006162 W EP2004006162 W EP 2004006162W WO 2005000738 A1 WO2005000738 A1 WO 2005000738A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- nitric acid
- production
- catalytically active
- active materials
- coated
- Prior art date
Links
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 19
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 title claims abstract description 17
- 229910017604 nitric acid Inorganic materials 0.000 title claims abstract description 17
- 238000000034 method Methods 0.000 title claims abstract description 14
- 239000003054 catalyst Substances 0.000 claims abstract description 26
- 239000011149 active material Substances 0.000 claims abstract description 14
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 claims description 28
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 18
- 239000004744 fabric Substances 0.000 claims description 13
- 229910000510 noble metal Inorganic materials 0.000 claims description 11
- 229910021529 ammonia Inorganic materials 0.000 claims description 9
- 238000011084 recovery Methods 0.000 claims description 6
- 238000010521 absorption reaction Methods 0.000 claims description 5
- 230000003647 oxidation Effects 0.000 claims description 4
- 238000007254 oxidation reaction Methods 0.000 claims description 4
- 239000012736 aqueous medium Substances 0.000 claims description 2
- 230000003197 catalytic effect Effects 0.000 claims description 2
- 238000010531 catalytic reduction reaction Methods 0.000 claims description 2
- 238000006722 reduction reaction Methods 0.000 claims description 2
- 239000011248 coating agent Substances 0.000 description 6
- 238000000576 coating method Methods 0.000 description 6
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Substances [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 5
- GQPLMRYTRLFLPF-UHFFFAOYSA-N Nitrous Oxide Chemical compound [O-][N+]#N GQPLMRYTRLFLPF-UHFFFAOYSA-N 0.000 description 4
- 230000015556 catabolic process Effects 0.000 description 4
- 229910052802 copper Inorganic materials 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 239000000725 suspension Substances 0.000 description 4
- 229910052725 zinc Inorganic materials 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 238000005470 impregnation Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 239000002759 woven fabric Substances 0.000 description 3
- 229910002535 CuZn Inorganic materials 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- FAHBNUUHRFUEAI-UHFFFAOYSA-M hydroxidooxidoaluminium Chemical compound O[Al]=O FAHBNUUHRFUEAI-UHFFFAOYSA-M 0.000 description 2
- 229910000953 kanthal Inorganic materials 0.000 description 2
- 229910044991 metal oxide Inorganic materials 0.000 description 2
- 150000004706 metal oxides Chemical class 0.000 description 2
- 239000001272 nitrous oxide Substances 0.000 description 2
- 239000008188 pellet Substances 0.000 description 2
- 229910052697 platinum Inorganic materials 0.000 description 2
- 229910052566 spinel group Inorganic materials 0.000 description 2
- 230000004584 weight gain Effects 0.000 description 2
- 235000019786 weight gain Nutrition 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- MGWGWNFMUOTEHG-UHFFFAOYSA-N 4-(3,5-dimethylphenyl)-1,3-thiazol-2-amine Chemical compound CC1=CC(C)=CC(C=2N=C(N)SC=2)=C1 MGWGWNFMUOTEHG-UHFFFAOYSA-N 0.000 description 1
- 229910002452 CoO-MgO Inorganic materials 0.000 description 1
- 229910018565 CuAl Inorganic materials 0.000 description 1
- 229910002060 Fe-Cr-Al alloy Inorganic materials 0.000 description 1
- 229910021193 La 2 O 3 Inorganic materials 0.000 description 1
- 241000627951 Osteobrama cotio Species 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000001476 alcoholic effect Effects 0.000 description 1
- 238000000137 annealing Methods 0.000 description 1
- 239000007900 aqueous suspension Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 229910052788 barium Inorganic materials 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 238000003421 catalytic decomposition reaction Methods 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 239000005431 greenhouse gas Substances 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000011031 large-scale manufacturing process Methods 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- JCXJVPUVTGWSNB-UHFFFAOYSA-N nitrogen dioxide Inorganic materials O=[N]=O JCXJVPUVTGWSNB-UHFFFAOYSA-N 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 239000010970 precious metal Substances 0.000 description 1
- 239000012495 reaction gas Substances 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 229910052596 spinel Inorganic materials 0.000 description 1
- 239000011029 spinel Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000007740 vapor deposition Methods 0.000 description 1
- 229910001928 zirconium oxide Inorganic materials 0.000 description 1
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
- B01D53/74—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
-
- 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
- B01J19/24—Stationary reactors without moving elements inside
- B01J19/248—Reactors comprising multiple separated flow channels
- B01J19/2495—Net-type reactors
-
- 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
- B01J23/80—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 with zinc, cadmium or mercury
-
- 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
- B01J35/00—Catalysts, in general, characterised by their form or physical properties
- B01J35/50—Catalysts, in general, characterised by their form or physical properties characterised by their shape or configuration
- B01J35/56—Foraminous structures having flow-through passages or channels, e.g. grids or three-dimensional monoliths
-
- 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
- B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
- B01J37/02—Impregnation, coating or precipitation
- B01J37/0215—Coating
- B01J37/0225—Coating of metal substrates
-
- 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
-
- 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
- C01B21/28—Apparatus
-
- 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 relates to methods for removing N 2 O in the production of nitric acid by means of coated spatial bodies.
- N 2 O nitrogen oxide
- DE-A-19805 202 and DE-A-198 19 882 disclose catalysts, in geometric forms such as pellets, cylinders or strands, for the catalytic decomposition of N 2 O in the large-scale production of nitric acid.
- the previously known catalysts have the disadvantage that they are in the form of compact beds of individual shaped catalyst bodies whose gas permeability cannot be set in a targeted manner (pressure drop and high mechanical and static loads).
- the object of the present invention was therefore to remedy the disadvantages mentioned above.
- Suitable materials for the wire mesh are all high-temperature stable materials such as stainless steel, Hasteloy C, V2A or Kanthai (Fe-Cr-Al alloy, e.g. material number 1.4767), preferably Kanthai.
- the wire mesh can be used in any shape, for example as a mesh, as mesh layers or as mesh packs.
- Tissue packs can be produced as follows:
- Fabric or knitted packs can be produced, for example, in a simple manner, by winding or stacking two or more differently structured webs of the woven and knitted webs as three-dimensional bodies, which are largely adaptable to the reactor cross-section. In the present case, largely means that no exact adaptation to the column cross section is required, but rather that manufacturing tolerances are permitted.
- the pack is predominantly designed as a roll, which was obtained by winding two or more differently structured webs of the woven and knitted webs.
- other geometric shapes are also possible, in particular a cuboid shape obtained by stacking webs.
- the wire of the tissue or tissue pack generally has a diameter of 5 to 5,000 ⁇ m, preferably 50 to 500 ⁇ m, particularly preferably 60 to 400 ⁇ m, in particular 70 to 250 ⁇ m and generally a mesh size of 5 to 5,000 ⁇ m, preferably 50 to 750 ⁇ m, particularly preferably 60 to 600 ⁇ m, in particular 70 to 450 ⁇ m.
- Oxides such as MgO, CoO, MoO 3 , NiO, ZnO, Cr 2 O 3 , WO 3 , SrO, CuO / Cu 2 O, MnO 2 or V 2 O 5 , mixed oxides such as CuO-ZnO- are suitable as catalytically active materials.
- a catalytically active material which is composed of approximately 8% by weight of CuO, 30% by weight of ZnO and 62% by weight of Al 2 O 3 is particularly preferred.
- the smallest possible amounts of CuO and other metal oxide are present.
- a maximum of 3.5% by weight of CuO and a maximum of 10% by weight of ZnO are preferably present.
- the production of the catalytically active materials is generally known or can be accomplished by generally known methods for the production of these materials.
- the wire of the tissue or tissue packs can be coated as follows:
- the wire of the tissue or tissue packs can e.g. at temperatures of 100 to 1500 ° C, preferably at 200 to 1400 ° C, particularly preferably at 300 to 1300 ° C.
- the coating can take place before or after, preferably after the shaping to form tissue packs.
- Coating with catalytically active materials can be carried out by vapor deposition, sputtering, impregnation, dipping, spraying or coating with powders, preferably with an aqueous and / or alcoholic solution or suspension, preferably with an aqueous suspension.
- the solids content of the suspension is generally between 2 and 95%, preferably between 3 and 75%, particularly preferably between 5 and 65%.
- the catalyst packs are generally heat-treated at temperatures from 100 to 1500 ° C., preferably 200 to 1300 ° C., particularly preferably at 300 to 1100 ° C.
- the weight ratio of coating to wire can be varied within wide limits and is generally from 0.01: 1 to 10: 1, preferably 0.1: 1 to 2: 1, particularly preferably 0.3: 1 to 1: 1 ,
- the wire mesh according to the invention can be placed anywhere in the reactor for nitric acid production after the production of the nitrogen oxides, preferably in a range in which the temperature is between 500 and 980 ° C., preferably 600 and 970 ° C., particularly preferably 700 and 960 ° C. in particular at the temperature level of the preceding ammonia oxidation at a pressure of 1 to 15 bar, particularly preferably between the noble metal network catalyst, optionally provided with a noble metal recovery network, and the heat exchanger.
- the wire mesh is usually used as a packed bed.
- the height of the catalyst bed is generally 1 to 150 cm, preferably 2 to 50 cm, particularly preferably 5 to 10 cm.
- the residence time on the catalyst bed is generally less than 1 sec, preferably less than 0.5 sec, particularly preferably less than 0.3 s.
- the wire mesh according to the invention can be arranged in reactors for the catalytic oxidation of ammonia to nitrogen oxides, which contain a noble metal catalyst, optionally a noble metal recovery network and heat exchanger in the flow direction between the noble metal catalyst / optionally noble metal recovery network and heat exchanger.
- the device for producing nitric acid from ammonia comprises in this order
- a reactor according to the preceding paragraph b) an absorption unit for the absorption of nitrogen oxides in an aqueous medium and optionally c) a reduction unit for the selective catalytic reduction of nitrogen oxides.
- a Kanthal metal fabric strip (length 100 cm, width 3.7 cm), material number 1.4767 (from Montz GmbH, D-40705 Hilden) was air-annealed for 4 h at 900 ° C and then with a gear roller (module 1 , 0mm) corrugated and rolled up with a 97cm long, smooth metal fabric tape, so that a package with vertical channels with a diameter of 4.1 cm was created.
- the package thus obtained was treated with a suspension of 100 g Disperal® AI25 (Sasol), 100 g water and 25 g catalytically active powder with the composition 20% by weight ZnO, 16% by weight CuO, 64% by weight Al 2 O 3 impregnated, dried at 120 ° C for 2 h and heat-treated in air at 950 ° C for 12 h.
- the weight gain of the package due to the impregnation was 11.6% after the annealing.
- a Kanthal metal fabric tape was treated analogously to preparation example 1. 16.7 cm long and 2 cm wide pieces of this metal fabric band were corrugated with a gear roller (module 1.0 mm) and placed on top of one another, so that a 7 cm long, cuboid-shaped monolith with vertical channels and a height and width of 2 cm was created and tied together with 3 V2A wires.
- the package thus obtained was treated with a suspension of 100 g Disperal® AI25 (Sasol), 100 g water and 25 g catalytically active powder with the composition 20% by weight ZnO, 16% by weight CuO, 64% by weight Al 2 O 3 soaked, dried at 120 ° C for 2 h and air tempered to 900 ° C for 12 h.
- the weight gain of the package due to the impregnation was 13.4% after the glow.
- ammonia was in an ammonia-air mixture with a concentration of 12 vol .-% ammonia and 88 vol .-% air on a Pt / Rh network with a load of 36 g / h ammonia per cm 3 network area at a temperature converted from 900 ° C to nitrogen monoxide.
- a 10 cm high layer of the catalyst from preparation example 1 which flowed through the reaction gas at a temperature of 800 ° C. with a residence time of approx. 0.03 s.
- the breakdown of N 2 O was 92% (vol .-%).
- the pressure drop across the catalyst bed was 250 mbar.
- Example 2 The reaction was carried out analogously to Example 1. However, immediately behind the platinum network, a 10 cm high layer of a catalyst composed of 18% by weight CuO, 20% by weight ZnO and 62% by weight Al 2 O 3 in the form of 3- mm strands used. The breakdown of N 2 O was 85% (vol%). The pressure drop across the catalyst bed was 1450 mbar.
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Inorganic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Catalysts (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
Description
Claims
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/561,787 US7364711B2 (en) | 2003-06-23 | 2004-06-08 | Method for removing N2O during the production of nitric acid |
ES04739691T ES2379875T3 (es) | 2003-06-23 | 2004-06-08 | Método para retirar N2O durante la producción de ácido nítrico |
EP04739691A EP1638887B1 (de) | 2003-06-23 | 2004-06-08 | Verfahren zur entfernung von n2o bei der salpetersäureherstellung |
JP2006515847A JP4454628B2 (ja) | 2003-06-23 | 2004-06-08 | 硝酸の製造でn2oを除去する方法 |
AT04739691T ATE549295T1 (de) | 2003-06-23 | 2004-06-08 | Verfahren zur entfernung von n2o bei der salpetersäureherstellung |
NO20055929A NO20055929L (no) | 2003-06-23 | 2005-12-13 | Metode for a fjerne N20 under produksjon av salpetersyre |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10328278.5 | 2003-06-23 | ||
DE10328278A DE10328278A1 (de) | 2003-06-23 | 2003-06-23 | Verfahren zur Entfernung von N2O bei der Salpetersäureherstellung |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2005000738A1 true WO2005000738A1 (de) | 2005-01-06 |
Family
ID=33546623
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2004/006162 WO2005000738A1 (de) | 2003-06-23 | 2004-06-08 | Verfahren zur entfernung von n2o bei der salpetersäureherstellung |
Country Status (8)
Country | Link |
---|---|
US (1) | US7364711B2 (de) |
EP (1) | EP1638887B1 (de) |
JP (1) | JP4454628B2 (de) |
AT (1) | ATE549295T1 (de) |
DE (1) | DE10328278A1 (de) |
ES (1) | ES2379875T3 (de) |
NO (1) | NO20055929L (de) |
WO (1) | WO2005000738A1 (de) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2005042403A2 (de) * | 2003-10-29 | 2005-05-12 | Basf Aktiengesellschaft | Verfahren zur entfernung von n2o bei der salpetersäureherstellung |
WO2011083002A1 (de) | 2009-12-16 | 2011-07-14 | Foboha Gmbh Formenbau | Verfahren zum herstellen eines mehrkomponentigen kunststoff-formteils mittels spritzgusstechnik sowie spritzgiessvorrichtung zur durchführung des verfahrens |
EP3533512A1 (de) * | 2018-03-01 | 2019-09-04 | Casale Sa | Verfahren zur reduzierung des gehalts an nox und n2o aus einem restgas eines salpetersäureprozesses |
RU2793239C2 (ru) * | 2018-03-01 | 2023-03-30 | Касале Са | СПОСОБ СНИЖЕНИЯ СОДЕРЖАНИЯ NOx И N2O В ХВОСТОВОМ ГАЗЕ ПРОЦЕССА ПОЛУЧЕНИЯ АЗОТНОЙ КИСЛОТЫ |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102005023605A1 (de) * | 2005-05-18 | 2006-11-23 | Basf Ag | Katalysatoren und Verfahren zur Oxidation von Ammoniak |
PL2145663T3 (pl) | 2008-07-16 | 2011-04-29 | Umicore Ag & Co Kg | Katalizator do przemiany tlenku diazotu i jego zastosowanie przy przemysłowym wytwarzaniu kwasu azotowego |
GB0819094D0 (en) * | 2008-10-20 | 2008-11-26 | Johnson Matthey Plc | Catalyst containment unit |
DE102010005105A1 (de) | 2010-01-19 | 2011-07-21 | Umicore AG & Co. KG, 63457 | Katalysator |
EP2646366B1 (de) * | 2010-12-01 | 2020-08-26 | The University of Sydney | Verfahren zur herstellung von salpetersäure |
RU2558112C2 (ru) | 2010-12-01 | 2015-07-27 | Дзе Юниверсити Оф Сидней | Способ производства нитрата аммония |
GB201102501D0 (en) * | 2011-02-14 | 2011-03-30 | Johnson Matthey Plc | Catalysts for use in ammonia oxidation processes |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5478549A (en) * | 1994-12-15 | 1995-12-26 | E. I. Du Pont De Nemours And Company | Production of nitric oxide |
WO1999007638A1 (de) * | 1997-08-12 | 1999-02-18 | L. & C. Steinmüller Gmbh | Verfahren zur herstellung von salpetersäure und vorrichtung zur durchführung des verfahrens |
WO2001087771A1 (de) * | 2000-05-15 | 2001-11-22 | W.C. Heraeus Gmbh & Co. Kg | Verfahren und vorrichtung zur reduzierung von distickstoffoxid |
WO2002092196A1 (en) * | 2001-05-16 | 2002-11-21 | Catator Ab | Method and device for processing nitrogen-based gases |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4128629A1 (de) * | 1991-08-29 | 1993-03-04 | Basf Ag | Silberhaltiger traegerkatalysator und verfahren zur katalytischen zersetzung von distickstoffmonoxid |
US5250490A (en) * | 1991-12-24 | 1993-10-05 | Union Carbide Chemicals & Plastics Technology Corporation | Noble metal supported on a base metal catalyst |
US5314673A (en) * | 1992-02-18 | 1994-05-24 | E. I. Du Pont De Nemours And Company | Process for the conversion of N2 O |
US5266546A (en) * | 1992-06-22 | 1993-11-30 | Chemical Research & Licensing Company | Catalytic distillation machine |
DE19805202A1 (de) | 1997-08-12 | 1999-02-18 | Steinmueller Gmbh L & C | Verfahren zur Herstellung von Salpetersäure und Vorrichtung zur Durchführung des Verfahrens |
DE19819882A1 (de) | 1998-04-27 | 1999-10-28 | Basf Ag | Verfahren zur katalytischen Zersetzung von N2O |
DE10006103A1 (de) * | 2000-02-11 | 2001-08-16 | Krupp Uhde Gmbh | Katalysator zum Abbau von N¶2¶O, dessen Verwendung bei der Salpetersäureproduktion sowie Verfahren zu seiner Herstellung |
DE10105624A1 (de) * | 2001-02-08 | 2002-10-02 | Omg Ag & Co Kg | Dreidimensionale, zwei-oder mehrlagig gestrickte Katalysatormetze für Gasreaktionen |
EP1289652A1 (de) * | 2001-02-28 | 2003-03-12 | Showa Denko K.K. | Katalysator für die zersetzung von distickstoffmonoxid, verfahren für seine herstellung und verfahren zur zersetzung von distickstoffmonoxid |
FR2847830B1 (fr) * | 2002-12-02 | 2005-08-12 | Irma | Procede de decomposition catalytique de n2o en n2 et o2 realise a haute temperature |
-
2003
- 2003-06-23 DE DE10328278A patent/DE10328278A1/de not_active Withdrawn
-
2004
- 2004-06-08 ES ES04739691T patent/ES2379875T3/es not_active Expired - Lifetime
- 2004-06-08 EP EP04739691A patent/EP1638887B1/de not_active Expired - Lifetime
- 2004-06-08 WO PCT/EP2004/006162 patent/WO2005000738A1/de active Search and Examination
- 2004-06-08 US US10/561,787 patent/US7364711B2/en not_active Expired - Fee Related
- 2004-06-08 JP JP2006515847A patent/JP4454628B2/ja not_active Expired - Fee Related
- 2004-06-08 AT AT04739691T patent/ATE549295T1/de active
-
2005
- 2005-12-13 NO NO20055929A patent/NO20055929L/no not_active Application Discontinuation
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5478549A (en) * | 1994-12-15 | 1995-12-26 | E. I. Du Pont De Nemours And Company | Production of nitric oxide |
WO1999007638A1 (de) * | 1997-08-12 | 1999-02-18 | L. & C. Steinmüller Gmbh | Verfahren zur herstellung von salpetersäure und vorrichtung zur durchführung des verfahrens |
WO2001087771A1 (de) * | 2000-05-15 | 2001-11-22 | W.C. Heraeus Gmbh & Co. Kg | Verfahren und vorrichtung zur reduzierung von distickstoffoxid |
WO2002092196A1 (en) * | 2001-05-16 | 2002-11-21 | Catator Ab | Method and device for processing nitrogen-based gases |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2005042403A2 (de) * | 2003-10-29 | 2005-05-12 | Basf Aktiengesellschaft | Verfahren zur entfernung von n2o bei der salpetersäureherstellung |
WO2005042403A3 (de) * | 2003-10-29 | 2006-03-02 | Basf Ag | Verfahren zur entfernung von n2o bei der salpetersäureherstellung |
WO2011083002A1 (de) | 2009-12-16 | 2011-07-14 | Foboha Gmbh Formenbau | Verfahren zum herstellen eines mehrkomponentigen kunststoff-formteils mittels spritzgusstechnik sowie spritzgiessvorrichtung zur durchführung des verfahrens |
EP3533512A1 (de) * | 2018-03-01 | 2019-09-04 | Casale Sa | Verfahren zur reduzierung des gehalts an nox und n2o aus einem restgas eines salpetersäureprozesses |
WO2019166267A1 (en) * | 2018-03-01 | 2019-09-06 | Casale Sa | PROCESS FOR REDUCING THE CONTENT OF NOx AND N2O FROM A TAIL GAS OF A NITRIC ACID PROCESS |
RU2793239C2 (ru) * | 2018-03-01 | 2023-03-30 | Касале Са | СПОСОБ СНИЖЕНИЯ СОДЕРЖАНИЯ NOx И N2O В ХВОСТОВОМ ГАЗЕ ПРОЦЕССА ПОЛУЧЕНИЯ АЗОТНОЙ КИСЛОТЫ |
US11925900B2 (en) | 2018-03-01 | 2024-03-12 | Casale Sa | Process for reducing the content of NOx and N2O from a tail gas of a nitric acid process |
Also Published As
Publication number | Publication date |
---|---|
NO20055929L (no) | 2006-01-19 |
US20070098613A1 (en) | 2007-05-03 |
ATE549295T1 (de) | 2012-03-15 |
US7364711B2 (en) | 2008-04-29 |
JP4454628B2 (ja) | 2010-04-21 |
EP1638887B1 (de) | 2012-03-14 |
EP1638887A1 (de) | 2006-03-29 |
JP2007508224A (ja) | 2007-04-05 |
ES2379875T3 (es) | 2012-05-04 |
DE10328278A1 (de) | 2005-01-27 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP2969937B1 (de) | Verfahren zur oxidation von ammoniak und dafür geeignete anlage | |
EP2678270B1 (de) | Verfahren zur beseitigung von n2o und nox aus dem prozess zur salpetersäureherstellung und dafür geeignete anlage | |
EP2178638A1 (de) | Katalysator, verfahren zu dessen herstellung und dessen verwendung für die zersetzung von n2o | |
JP4368062B2 (ja) | N2oの接触分解 | |
EP1257347B1 (de) | Katalysator zum abbau von n2o, dessen verwendung sowie verfahren zu seiner herstellung | |
WO2013087181A2 (de) | Vorrichtung und verfahren zur beseitigung von nox und n2o | |
WO1993004774A1 (de) | Silberhaltiger trägerkatalysator und verfahren zur katalytischen zersetzung von distickstoffmonoxid | |
EP1259307A1 (de) | Verfahren zur beseitigung von nox und n20 | |
EP1638887B1 (de) | Verfahren zur entfernung von n2o bei der salpetersäureherstellung | |
WO2000023176A1 (de) | Hochtemperaturstabile katalysatoren zur zersetzung von n2o | |
EP1586365B1 (de) | Verwendung eines Katalysators zur Zersetzung von Distickstoffmonoxid (N2O) beim Ostwaldprozess | |
DE102004024026A1 (de) | Katalysator zur N2O-Zersetzung beim Ostwaldprozess | |
EP1001910A1 (de) | Verfahren zur herstellung von salpetersäure und vorrichtung zur durchführung des verfahrens | |
DE19841740A1 (de) | Keramischer Katalysator zur selektiven Zersetzung von N2O und Verfahren zu dessen Herstellung | |
WO2005042403A2 (de) | Verfahren zur entfernung von n2o bei der salpetersäureherstellung | |
WO2006122924A2 (de) | Katalysatoren und verfahren zur oxidation von ammoniak | |
WO2011089124A2 (de) | Katalysator | |
DE2335712B2 (de) | Vorrichtung zur wiedergewinnung von edelmetallen | |
DE10016276A1 (de) | Katalysatorsystem zur Zersetzung von N20 | |
DE10023538A1 (de) | Verfahren zur katalytischen Zersetzung von N2O | |
DE2347154B2 (de) | Verfahren zur umwandlung von stickstoffoxiden in verbrennungsabgasen durch katalytische reduktion |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AK | Designated states |
Kind code of ref document: A1 Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BW BY BZ CA CH CN CO CR CU CZ DE DK DM DZ EC EE EG ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NA NI NO NZ OM PG PH PL PT RO RU SC SD SE SG SK SL SY TJ TM TN TR TT TZ UA UG US UZ VC VN YU ZA ZM ZW |
|
AL | Designated countries for regional patents |
Kind code of ref document: A1 Designated state(s): BW GH GM KE LS MW MZ NA SD SL SZ TZ UG ZM ZW AM AZ BY KG KZ MD RU TJ TM AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LU MC NL PL PT RO SE SI SK TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
WWE | Wipo information: entry into national phase |
Ref document number: 2004739691 Country of ref document: EP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2006515847 Country of ref document: JP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2007098613 Country of ref document: US Ref document number: 10561787 Country of ref document: US |
|
WWP | Wipo information: published in national office |
Ref document number: 2004739691 Country of ref document: EP |
|
DPEN | Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed from 20040101) | ||
WWP | Wipo information: published in national office |
Ref document number: 10561787 Country of ref document: US |