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SE9903676D0 - Reduction of NOx - Google Patents

Reduction of NOx

Info

Publication number
SE9903676D0
SE9903676D0 SE9903676A SE9903676A SE9903676D0 SE 9903676 D0 SE9903676 D0 SE 9903676D0 SE 9903676 A SE9903676 A SE 9903676A SE 9903676 A SE9903676 A SE 9903676A SE 9903676 D0 SE9903676 D0 SE 9903676D0
Authority
SE
Sweden
Prior art keywords
nox
methanol
condensate
added
methanol column
Prior art date
Application number
SE9903676A
Other languages
Swedish (sv)
Other versions
SE524106C2 (en
SE9903676L (en
Inventor
Johan Olsson
Guido Zacchi
Original Assignee
Soedra Cell Ab
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 Soedra Cell Ab filed Critical Soedra Cell Ab
Priority to SE9903676A priority Critical patent/SE524106C2/en
Publication of SE9903676D0 publication Critical patent/SE9903676D0/en
Publication of SE9903676L publication Critical patent/SE9903676L/en
Publication of SE524106C2 publication Critical patent/SE524106C2/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D3/00—Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping
    • B01D3/34—Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping with one or more auxiliary substances

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Treating Waste Gases (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

An acidifying agent is added to the methanol column (17) used to remove ammonia from the condensate (1). A method for preparing sulfate pulp includes steps for reducing nitrogen oxide (NOx) emissions and obtaining a flow of ammonia-rich liquid by using a stripper (15) and a methanol column to purify the condensate, which generates a volatile methanol fraction. An acidifying agent is added to the methanol column.
SE9903676A 1999-10-13 1999-10-13 Purification of condensate from evaporator and cooker in sulfate pulping process, comprises addition of acidifying agent to methanol column used to remove ammonia SE524106C2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SE9903676A SE524106C2 (en) 1999-10-13 1999-10-13 Purification of condensate from evaporator and cooker in sulfate pulping process, comprises addition of acidifying agent to methanol column used to remove ammonia

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE9903676A SE524106C2 (en) 1999-10-13 1999-10-13 Purification of condensate from evaporator and cooker in sulfate pulping process, comprises addition of acidifying agent to methanol column used to remove ammonia

Publications (3)

Publication Number Publication Date
SE9903676D0 true SE9903676D0 (en) 1999-10-13
SE9903676L SE9903676L (en) 2001-04-14
SE524106C2 SE524106C2 (en) 2004-06-29

Family

ID=20417330

Family Applications (1)

Application Number Title Priority Date Filing Date
SE9903676A SE524106C2 (en) 1999-10-13 1999-10-13 Purification of condensate from evaporator and cooker in sulfate pulping process, comprises addition of acidifying agent to methanol column used to remove ammonia

Country Status (1)

Country Link
SE (1) SE524106C2 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE0702610L (en) * 2007-11-26 2009-04-21 Processum Biorefinery Initiative Ab Process for the extraction of ammonium salt and methanol from liquid emanating from impure condensate resulting from cellulose pulp production
PT2396105T (en) 2009-02-12 2018-11-29 A H Lundberg Systems Ltd Methanol purification method and apparatus
FI20205547A1 (en) 2020-05-27 2021-11-28 Valmet Technologies Oy A method for removing ammonia from non-condensable gases of a pulp mill

Also Published As

Publication number Publication date
SE524106C2 (en) 2004-06-29
SE9903676L (en) 2001-04-14

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Legal Events

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