DK311889A - PROCEDURE FOR REMOVAL OF NITROGEN OXIDES FROM COMBUSTION GAS - Google Patents

PROCEDURE FOR REMOVAL OF NITROGEN OXIDES FROM COMBUSTION GAS Download PDF

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Publication number
DK311889A
DK311889A DK311889A DK311889A DK311889A DK 311889 A DK311889 A DK 311889A DK 311889 A DK311889 A DK 311889A DK 311889 A DK311889 A DK 311889A DK 311889 A DK311889 A DK 311889A
Authority
DK
Denmark
Prior art keywords
oxides
nitrogen oxides
removal
procedure
combustion gas
Prior art date
Application number
DK311889A
Other languages
Danish (da)
Other versions
DK311889D0 (en
DK169610B1 (en
Inventor
Olaf Scheidsteger
Wolfgang Hoelderich
Ronald Drews
Helmut Schachner
Klaus Hess
Original Assignee
Basf Ag
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
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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6357237&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=DK311889(A) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Basf Ag filed Critical Basf Ag
Publication of DK311889D0 publication Critical patent/DK311889D0/en
Publication of DK311889A publication Critical patent/DK311889A/en
Application granted granted Critical
Publication of DK169610B1 publication Critical patent/DK169610B1/en

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Classifications

    • 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
    • B01J27/00—Catalysts comprising the elements or compounds of halogens, sulfur, selenium, tellurium, phosphorus or nitrogen; Catalysts comprising carbon compounds
    • B01J27/02—Sulfur, selenium or tellurium; Compounds thereof
    • B01J27/053—Sulfates
    • 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
    • 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

Abstract

In a process for eliminating nitrogen oxides from combustion exhaust gases which contain arsenic compounds as impurities, by selective catalytic reduction with ammonia, a catalyst is used which essentially contains titanium oxide and catalytically effective quantities of compounds of vanadium, molybdenum, tungsten and zinc. The catalyst contains A) titanium in the form of oxides, B) vanadium in the form of oxides or sulphates, C) molybdenum and/or tungsten in the form of oxides and D) zinc in the form of oxides or sulphates, with the proviso that the metal components A to D are present in the A/B/C/D atomic ratios of 1/0.0022-0.0165/0.021-0.21/0.009-0.028.
DK311889A 1988-06-25 1989-06-23 Method of Removing Nitric Oxides from Combustion Gases DK169610B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3821480 1988-06-25
DE3821480A DE3821480A1 (en) 1988-06-25 1988-06-25 METHOD FOR REMOVING NITROGEN OXIDES FROM COMBUSTION EXHAUST GASES

Publications (3)

Publication Number Publication Date
DK311889D0 DK311889D0 (en) 1989-06-23
DK311889A true DK311889A (en) 1989-12-26
DK169610B1 DK169610B1 (en) 1994-12-27

Family

ID=6357237

Family Applications (1)

Application Number Title Priority Date Filing Date
DK311889A DK169610B1 (en) 1988-06-25 1989-06-23 Method of Removing Nitric Oxides from Combustion Gases

Country Status (4)

Country Link
EP (1) EP0348768B1 (en)
AT (1) ATE81030T1 (en)
DE (2) DE3821480A1 (en)
DK (1) DK169610B1 (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4025587A1 (en) * 1990-08-11 1992-02-13 Basf Ag METHOD FOR PRODUCING CATALYSTS
DE4116364A1 (en) * 1991-05-18 1992-11-19 Basf Ag METAL OXIDE CONTAINING CATALYST FOR PROCESSES FOR THE OXIDATIVE REMOVAL OF ORGANIC COMPOUNDS FROM EXHAUST GASES FROM COMBUSTION ENGINES
US5214017A (en) * 1991-11-27 1993-05-25 Sun Company, Inc. (R&M) Solid-acid alkylation catalyst compositions for alkylation processes
US5212136A (en) * 1991-11-27 1993-05-18 Sun Company, Inc (R&M) Solid-acid alkylation catalyst compositions for alkylation processes
FR2684899B1 (en) * 1991-12-16 1994-03-25 Rhone Poulenc Chimie CATALYST FOR SELECTIVE REDUCTION OF NITROGEN OXIDES CONTAINED IN A GAS STREAM AND APPLICATION OF SAID CATALYSTS.
DE4321555C1 (en) * 1993-06-29 1994-09-15 Bayer Ag Process for producing mixed-oxide powders for denitration catalysts
DE102015205843A1 (en) * 2015-03-31 2016-10-06 Johnson Matthey Catalysts (Germany) Gmbh Catalyst, in particular for exhaust gas purification
DE102015108014B3 (en) * 2015-05-20 2016-11-24 Chemisch Thermische Prozesstechnik Gmbh Process and installation for cleaning exhaust gases laden with nitrogen oxides
WO2020119763A1 (en) 2018-12-14 2020-06-18 Basf Corporation A method for production of vanadium catalysts

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53117689A (en) * 1977-03-24 1978-10-14 Mitsubishi Heavy Ind Ltd Nitrogen oxides removal catalyst composition
DE3643605C1 (en) * 1986-12-19 1988-07-14 Otto Feuerfest Gmbh Carrier catalyst, process for its preparation and its use for the reduction of nitrogen oxides

Also Published As

Publication number Publication date
DK311889D0 (en) 1989-06-23
DE3821480A1 (en) 1989-12-28
ATE81030T1 (en) 1992-10-15
EP0348768A2 (en) 1990-01-03
EP0348768A3 (en) 1990-08-29
EP0348768B1 (en) 1992-09-30
DE58902355D1 (en) 1992-11-05
DK169610B1 (en) 1994-12-27

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Legal Events

Date Code Title Description
B1 Patent granted (law 1993)
PBP Patent lapsed