GB1353909A - Process for the control of malodorous emissions from kraft pulpmills - Google Patents

Process for the control of malodorous emissions from kraft pulpmills

Info

Publication number
GB1353909A
GB1353909A GB1353909DA GB1353909A GB 1353909 A GB1353909 A GB 1353909A GB 1353909D A GB1353909D A GB 1353909DA GB 1353909 A GB1353909 A GB 1353909A
Authority
GB
United Kingdom
Prior art keywords
kraft
black liquor
pulpmills
control
malodorous
Prior art date
Legal status (The legal status 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 status listed.)
Expired
Application number
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Chemech Engineering Ltd
Original Assignee
Chemech Engineering Ltd
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 Chemech Engineering Ltd filed Critical Chemech Engineering Ltd
Publication of GB1353909A publication Critical patent/GB1353909A/en
Expired legal-status Critical Current

Links

Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
    • D21C11/00—Regeneration of pulp liquors or effluent waste waters
    • D21C11/0057—Oxidation of liquors, e.g. in order to reduce the losses of sulfur compounds, followed by evaporation or combustion if the liquor in question is a black liquor
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F11/00—Treatment of sludge; Devices therefor
    • C02F11/06—Treatment of sludge; Devices therefor by oxidation
    • C02F11/08—Wet air oxidation

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Treating Waste Gases (AREA)
  • Paper (AREA)

Abstract

1353909 Treating black liquor CHEMECH ENG Ltd 20 Aug 1971 [22 Aug 1970] 40522/70 Heading C1C A process for the oxidation of malodorous bivalent sulphur compounds (e.g. methyl mercaptan, dimethyl sulphide and disulphide, hydrogen sulphide and sodium sulphide) present in kraft black liquor comprises heating the black liquor at 220-350‹ F. in the presence of molecular oxygen (e.g. pure oxygen or air) at superatmospheric pressure.
GB1353909D 1970-08-22 1970-08-22 Process for the control of malodorous emissions from kraft pulpmills Expired GB1353909A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4052270 1970-08-22

Publications (1)

Publication Number Publication Date
GB1353909A true GB1353909A (en) 1974-05-22

Family

ID=10415314

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1353909D Expired GB1353909A (en) 1970-08-22 1970-08-22 Process for the control of malodorous emissions from kraft pulpmills

Country Status (1)

Country Link
GB (1) GB1353909A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0009932A1 (en) * 1978-10-02 1980-04-16 Air Products And Chemicals, Inc. Method and apparatus for improving efficiency of black liquor oxidation in pulp mills
FR2669947A1 (en) * 1990-12-01 1992-06-05 Linde Ag PROCESS FOR THE DISSOLUTION OF CELLULOSE

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0009932A1 (en) * 1978-10-02 1980-04-16 Air Products And Chemicals, Inc. Method and apparatus for improving efficiency of black liquor oxidation in pulp mills
US4239589A (en) * 1978-10-02 1980-12-16 Air Products And Chemicals, Inc. Process for oxidation of black liquor
FR2669947A1 (en) * 1990-12-01 1992-06-05 Linde Ag PROCESS FOR THE DISSOLUTION OF CELLULOSE

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees