DK677887A - PROCEDURES FOR THE REMOVAL OF NITROGEN OXIDES FROM WASTE GAS INCURRED BY COAL COMBUSTION - Google Patents

PROCEDURES FOR THE REMOVAL OF NITROGEN OXIDES FROM WASTE GAS INCURRED BY COAL COMBUSTION

Info

Publication number
DK677887A
DK677887A DK677887A DK677887A DK677887A DK 677887 A DK677887 A DK 677887A DK 677887 A DK677887 A DK 677887A DK 677887 A DK677887 A DK 677887A DK 677887 A DK677887 A DK 677887A
Authority
DK
Denmark
Prior art keywords
removal
nitrogen oxides
procedures
waste gas
coal combustion
Prior art date
Application number
DK677887A
Other languages
Danish (da)
Other versions
DK677887D0 (en
DK169537B1 (en
Inventor
Wolf Dieter Mross
Ronald Drews
Olaf Scheidsteger
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6317214&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=DK677887(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 DK677887D0 publication Critical patent/DK677887D0/en
Publication of DK677887A publication Critical patent/DK677887A/en
Application granted granted Critical
Publication of DK169537B1 publication Critical patent/DK169537B1/en

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
    • B01D53/74—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
    • B01J35/00—Catalysts, in general, characterised by their form or physical properties
    • B01J35/60—Catalysts, in general, characterised by their form or physical properties characterised by their surface properties or porosity
    • 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
    • B01J23/30—Tungsten
    • 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
    • B01J35/60—Catalysts, in general, characterised by their form or physical properties characterised by their surface properties or porosity
    • B01J35/61—Surface area
    • B01J35/613—10-100 m2/g
    • 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
    • B01J35/60—Catalysts, in general, characterised by their form or physical properties characterised by their surface properties or porosity
    • B01J35/63—Pore volume
    • B01J35/633—Pore volume less than 0.5 ml/g

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Environmental & Geological Engineering (AREA)
  • Materials Engineering (AREA)
  • Analytical Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Health & Medical Sciences (AREA)
  • Biomedical Technology (AREA)
  • Organic Chemistry (AREA)
  • Catalysts (AREA)
  • Exhaust Gas Treatment By Means Of Catalyst (AREA)
  • Treating Waste Gases (AREA)
  • Apparatus For Radiation Diagnosis (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
  • Separation By Low-Temperature Treatments (AREA)
  • Chimneys And Flues (AREA)

Abstract

For the removal of nitrogen oxides by selective catalytic reduction with ammonia, catalysts are used which essentially contain titanium oxide and catalytically active quantities of oxides of vanadium, tungsten and/or molybdenum. The catalysts have a BET surface area from 5 to 60 m<2>/g and a pore volume of 0.15 - 0.40 ml/g and contain at most 35 % of pores of diameters < 200 A.
DK677887A 1986-12-24 1987-12-22 Process for the removal of nitrogen oxides from waste gases resulting from the combustion of coal DK169537B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3644461 1986-12-24
DE19863644461 DE3644461A1 (en) 1986-12-24 1986-12-24 METHOD FOR REMOVING NITROGEN OXIDS FROM EXHAUST GASES WHICH COME FROM THE COMBUSTION OF COAL

Publications (3)

Publication Number Publication Date
DK677887D0 DK677887D0 (en) 1987-12-22
DK677887A true DK677887A (en) 1988-06-25
DK169537B1 DK169537B1 (en) 1994-11-28

Family

ID=6317214

Family Applications (1)

Application Number Title Priority Date Filing Date
DK677887A DK169537B1 (en) 1986-12-24 1987-12-22 Process for the removal of nitrogen oxides from waste gases resulting from the combustion of coal

Country Status (5)

Country Link
EP (1) EP0272620B1 (en)
AT (1) ATE77256T1 (en)
DE (2) DE3644461A1 (en)
DK (1) DK169537B1 (en)
FI (1) FI85562C (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4025174A1 (en) * 1990-08-08 1992-02-13 Siemens Ag ARSEN-RESISTANT MIXED OXIDE CATALYST AND METHOD FOR THE PRODUCTION THEREOF
US5270277A (en) * 1990-08-08 1993-12-14 Siemens Aktiengesellschaft Arsenic-resistant catalyst and method for producing the same
DE4038054A1 (en) * 1990-11-29 1992-06-04 Man Technologie Gmbh METHOD AND DEVICE FOR SELECTIVE CATALYTIC NO (DOWN ARROW) X (DOWN ARROW) REDUCTION IN OXYGEN-BASED EXHAUST GASES
US5759504A (en) * 1994-12-28 1998-06-02 Hitachi, Ltd. Method for treating organohalogen compounds with catalyst
CN113164921B (en) 2018-12-14 2023-06-23 巴斯夫公司 Method for producing vanadium catalyst
CN113786841B (en) * 2021-09-17 2023-11-21 重庆科技学院 Lead poisoning resistant Fe-Mn-Ce/titanium-containing blast furnace slag denitration catalyst

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4520124A (en) * 1981-03-19 1985-05-28 Sakai Chemical Industry Co., Ltd. Method for producing a catalytic structure for the reduction of nitrogen oxides
EP0256359B1 (en) * 1986-07-25 1992-05-20 Mitsubishi Petrochemical Co., Ltd. Catalysts and use thereof for removing nitrogen oxides in exhaust gas

Also Published As

Publication number Publication date
DK677887D0 (en) 1987-12-22
FI85562B (en) 1992-01-31
FI875375A0 (en) 1987-12-07
ATE77256T1 (en) 1992-07-15
EP0272620B1 (en) 1992-06-17
DE3779887D1 (en) 1992-07-23
EP0272620A2 (en) 1988-06-29
EP0272620A3 (en) 1989-02-22
DE3644461A1 (en) 1988-07-07
FI875375A (en) 1988-06-25
DK169537B1 (en) 1994-11-28
FI85562C (en) 1992-05-11

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Legal Events

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