ZA895453B - Removal of nox from the waste gases obtained in the production of fertilizers - Google Patents

Removal of nox from the waste gases obtained in the production of fertilizers

Info

Publication number
ZA895453B
ZA895453B ZA895453A ZA895453A ZA895453B ZA 895453 B ZA895453 B ZA 895453B ZA 895453 A ZA895453 A ZA 895453A ZA 895453 A ZA895453 A ZA 895453A ZA 895453 B ZA895453 B ZA 895453B
Authority
ZA
South Africa
Prior art keywords
nox
fertilizers
removal
production
stage
Prior art date
Application number
ZA895453A
Inventor
Rainer Wunder
Wunder Rainer
Paul Reinard
Reinard Paul
Lothar Diehl
Diehl Lothar
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
Application filed by Basf Ag filed Critical Basf Ag
Publication of ZA895453B publication Critical patent/ZA895453B/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
    • B01D53/46—Removing components of defined structure
    • B01D53/54—Nitrogen compounds
    • B01D53/56—Nitrogen oxides

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • General Chemical & Material Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Biomedical Technology (AREA)
  • Analytical Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Treating Waste Gases (AREA)
  • Fertilizers (AREA)
  • Processing Of Solid Wastes (AREA)
  • Catalysts (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)

Abstract

NOx-containing exhaust gases arising in the manufacture of fertilisers by digestion of raw phosphates with nitric acid are removed by adsorption in a scrubbing fluid. For this purpose, the exhaust gases are scrubbed in a scrubbing stage with a circulated ammonium nitrate solution of which the concentration is held at values from 5 to 30 % by weight and the pH is held at values from 3 to 7 by addition of ammonia and the temperature is at most 40 DEG C. The ammonium nitrate solution laden with NOx is heated to at least 55 DEG C in a regeneration stage, cooled again to the temperature of the scrubbing stage after it has left the regeneration stage, and at least partially recycled to the latter. <IMAGE>
ZA895453A 1988-07-19 1989-07-18 Removal of nox from the waste gases obtained in the production of fertilizers ZA895453B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE3824465A DE3824465A1 (en) 1988-07-19 1988-07-19 METHOD FOR REMOVING NO (DOWN ARROW) X (DOWN ARROW) FROM THE EXHAUST GASES PRODUCED IN THE PRODUCTION OF FERTILIZERS

Publications (1)

Publication Number Publication Date
ZA895453B true ZA895453B (en) 1991-03-27

Family

ID=6359024

Family Applications (1)

Application Number Title Priority Date Filing Date
ZA895453A ZA895453B (en) 1988-07-19 1989-07-18 Removal of nox from the waste gases obtained in the production of fertilizers

Country Status (9)

Country Link
EP (1) EP0351613B1 (en)
CN (1) CN1018982B (en)
AT (1) ATE80565T1 (en)
DE (2) DE3824465A1 (en)
DZ (1) DZ1353A1 (en)
ES (1) ES2034522T3 (en)
GR (1) GR3005953T3 (en)
NO (1) NO172525C (en)
ZA (1) ZA895453B (en)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4027404A1 (en) * 1990-02-26 1991-08-29 Fritz Curtius Nitric oxide oxidn. in gas stream by scrubbing with nitric acid - contg. nitrous acid by desorbing of acid cpds. into gas and replacing nitrous acid
DE4335867A1 (en) * 1993-10-21 1995-05-04 Hans Dr Remstedt Process for the simultaneous removal of sulphur oxides and nitrogen oxides from combustion exhaust gases in an ammonia scrubber
GB2315435A (en) * 1996-07-22 1998-02-04 Basf Ag Purifying waste gas from fertiliser production
GB2315434A (en) * 1996-07-22 1998-02-04 Basf Ag Purifying waste gas from fertiliser production
DE19634177A1 (en) * 1996-08-23 1998-02-26 Basf Ag Process for the common purification of the waste gases resulting from the production of mineral fertilizers by means of a washing solution
DE102006054972A1 (en) * 2006-11-16 2008-05-21 M+W Zander Facility Engineering Ltd. Process for the purification of exhaust gases containing nitrous gases
DE102008062496A1 (en) * 2008-12-16 2010-06-17 Linde-Kca-Dresden Gmbh Process for the removal of impurities from oxygen-containing gas streams
DE102011017032A1 (en) 2011-04-14 2012-10-18 Linde Aktiengesellschaft Process and installation for depleting nitrogen oxides from oxygen-containing gas streams
CN103446865A (en) * 2013-07-03 2013-12-18 四川大学 Nitrophosphate tail gas deamination device and nitrophosphate tail gas deamination process
WO2016180676A1 (en) * 2015-05-08 2016-11-17 Yara International Asa Reduction of nox emissions by effluent gases from fertilizer production with ozone injection and wet scrubbing
EP3549661A1 (en) * 2018-04-06 2019-10-09 Yara International ASA Nox removal from gaseous effluents

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1070930A (en) * 1974-09-30 1980-02-05 Philip F. Kaupas Pollution control process for fertilizer plant

Also Published As

Publication number Publication date
EP0351613A3 (en) 1990-03-28
NO172525B (en) 1993-04-26
CN1018982B (en) 1992-11-11
NO892888L (en) 1990-01-22
NO892888D0 (en) 1989-07-13
GR3005953T3 (en) 1993-06-07
ATE80565T1 (en) 1992-10-15
CN1040153A (en) 1990-03-07
EP0351613B1 (en) 1992-09-16
DE3824465A1 (en) 1990-01-25
DE58902279D1 (en) 1992-10-22
DZ1353A1 (en) 2004-09-13
EP0351613A2 (en) 1990-01-24
ES2034522T3 (en) 1993-04-01
NO172525C (en) 1993-08-11

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