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SE8703718D0 - METHOD OF ACTIVATING LIGNOCELLULOSAMATER MATERIAL WITH NITROGEN Dioxide CONTAINING GAS - Google Patents

METHOD OF ACTIVATING LIGNOCELLULOSAMATER MATERIAL WITH NITROGEN Dioxide CONTAINING GAS

Info

Publication number
SE8703718D0
SE8703718D0 SE8703718A SE8703718A SE8703718D0 SE 8703718 D0 SE8703718 D0 SE 8703718D0 SE 8703718 A SE8703718 A SE 8703718A SE 8703718 A SE8703718 A SE 8703718A SE 8703718 D0 SE8703718 D0 SE 8703718D0
Authority
SE
Sweden
Prior art keywords
gas
activating
lignocellulosic material
containing gas
separated
Prior art date
Application number
SE8703718A
Other languages
Swedish (sv)
Other versions
SE8703718L (en
SE460543B (en
Inventor
H O Samuelson
Original Assignee
Mo Och Domsjoe 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 Mo Och Domsjoe Ab filed Critical Mo Och Domsjoe Ab
Priority to SE8703718A priority Critical patent/SE460543B/en
Publication of SE8703718D0 publication Critical patent/SE8703718D0/en
Priority to NZ226104A priority patent/NZ226104A/en
Priority to CA000577358A priority patent/CA1301412C/en
Priority to AT88115896T priority patent/ATE101886T1/en
Priority to ZA887229A priority patent/ZA887229B/en
Priority to AU22832/88A priority patent/AU605913B2/en
Priority to DE3887948T priority patent/DE3887948T2/en
Priority to NO884279A priority patent/NO172698C/en
Priority to JP63242205A priority patent/JP2510424B2/en
Priority to EP88115896A priority patent/EP0309998B1/en
Priority to ES88115896T priority patent/ES2049234T3/en
Priority to FI884432A priority patent/FI93231C/en
Publication of SE8703718L publication Critical patent/SE8703718L/en
Publication of SE460543B publication Critical patent/SE460543B/en

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
    • D21C1/00—Pretreatment of the finely-divided materials before digesting
    • 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
    • D21C11/06—Treatment of pulp gases; Recovery of the heat content of the gases; Treatment of gases arising from various sources in pulp and paper mills; Regeneration of gaseous SO2, e.g. arising from liquors containing sulfur compounds

Landscapes

  • Paper (AREA)
  • Polysaccharides And Polysaccharide Derivatives (AREA)
  • Micro-Organisms Or Cultivation Processes Thereof (AREA)
  • Immobilizing And Processing Of Enzymes And Microorganisms (AREA)
  • Chemical And Physical Treatments For Wood And The Like (AREA)
  • Compounds Of Unknown Constitution (AREA)
  • Investigating Or Analysing Biological Materials (AREA)
  • Chemical Or Physical Treatment Of Fibers (AREA)

Abstract

Method of activating aqueous lignocellulosic material with a gas containing nitrogen oxide, followed by a delignification stage for the purpose of obtaining a high quality end product with no or only a slight effect on the environment. In accordance with the inventive method, the lignocellulosic material is brought into contact (18) with an oxygen-containing gas (19), and activating gas is separated from the lignocellulosic material during and/or subsequent to the activating process (9). The method is characterized by a) controlling the supply of oxygen-containing gas (12) such that the separated gas (27) contains at least 2 kg nitric oxide (NO) calculated on 1000 kg of dry lignocellulosic material, and by b) reacting the separated gas (27) in one or more stages (26) with absorption solution (25) whose original pH lies within the range 3-13.5, and by passing (28) the gas purified with the aid of absorption solution to atmosphere, or to a destruction plant optionally subsequent ot further purification of the gas.
SE8703718A 1987-09-28 1987-09-28 PROCEDURE FOR ACTIVATING LIGNOCELLULO MATERIAL WITH NITROGEN Dioxide CONTAINING GAS SE460543B (en)

Priority Applications (12)

Application Number Priority Date Filing Date Title
SE8703718A SE460543B (en) 1987-09-28 1987-09-28 PROCEDURE FOR ACTIVATING LIGNOCELLULO MATERIAL WITH NITROGEN Dioxide CONTAINING GAS
NZ226104A NZ226104A (en) 1987-09-28 1988-09-09 Manufacture of cellulose pulp during which aqueous lignocellulosic material is activated with nitrogen dioxide
CA000577358A CA1301412C (en) 1987-09-28 1988-09-14 Method in the activation of lignocellulosic material with a gas containing nitrogen dioxide
FI884432A FI93231C (en) 1987-09-28 1988-09-27 Procedure for activating lignocellulosic material with a gas containing nitrogen dioxide
DE3887948T DE3887948T2 (en) 1987-09-28 1988-09-27 Process in the activation of lignocellulosic material with a gas containing nitrogen dioxide.
ZA887229A ZA887229B (en) 1987-09-28 1988-09-27 A method in the activation of lignocellulosic material with a gas containing nitrogen dioxide
AU22832/88A AU605913B2 (en) 1987-09-28 1988-09-27 A method in the activation of lignocellulosic material with a gas containing nitrogen dioxide
AT88115896T ATE101886T1 (en) 1987-09-28 1988-09-27 PROCESSES IN THE ACTIVATION OF LIGNOCELLULOSIC MATERIAL WITH A GAS CONTAINING NITROGEN DIOXIDE.
NO884279A NO172698C (en) 1987-09-28 1988-09-27 PROCEDURE FOR PREPARING CELLULOSMASS
JP63242205A JP2510424B2 (en) 1987-09-28 1988-09-27 Method of activating lignocellulosic material with gas containing nitrogen dioxide
EP88115896A EP0309998B1 (en) 1987-09-28 1988-09-27 A method in the activation of lignocellulosic material with a gas containing nitrogen dioxide
ES88115896T ES2049234T3 (en) 1987-09-28 1988-09-27 A METHOD FOR ACTIVATING LIGNOCELLULOSIC MATERIAL WITH A GAS CONTAINING NITROGEN DIOXIDE.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE8703718A SE460543B (en) 1987-09-28 1987-09-28 PROCEDURE FOR ACTIVATING LIGNOCELLULO MATERIAL WITH NITROGEN Dioxide CONTAINING GAS

Publications (3)

Publication Number Publication Date
SE8703718D0 true SE8703718D0 (en) 1987-09-28
SE8703718L SE8703718L (en) 1989-03-29
SE460543B SE460543B (en) 1989-10-23

Family

ID=20369679

Family Applications (1)

Application Number Title Priority Date Filing Date
SE8703718A SE460543B (en) 1987-09-28 1987-09-28 PROCEDURE FOR ACTIVATING LIGNOCELLULO MATERIAL WITH NITROGEN Dioxide CONTAINING GAS

Country Status (12)

Country Link
EP (1) EP0309998B1 (en)
JP (1) JP2510424B2 (en)
AT (1) ATE101886T1 (en)
AU (1) AU605913B2 (en)
CA (1) CA1301412C (en)
DE (1) DE3887948T2 (en)
ES (1) ES2049234T3 (en)
FI (1) FI93231C (en)
NO (1) NO172698C (en)
NZ (1) NZ226104A (en)
SE (1) SE460543B (en)
ZA (1) ZA887229B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE9200183L (en) * 1992-01-23 1993-07-24 Kamyr Ab SEPARATORY DEVICE AND PROCEDURE

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4165253A (en) * 1978-07-20 1979-08-21 Ivanov Mikhail A Process for producing pulp
SE421938B (en) * 1980-06-05 1982-02-08 Mo Och Domsjoe Ab PROCEDURE FOR TREATMENT OF CELLULOSAMASSA
SE451023B (en) * 1985-12-10 1987-08-24 Mo Och Domsjoe Ab METHOD OF ACTIVATING LIGNOCELLULOSAMATER MATERIAL WITH NITROGEN Dioxide CONTAINING GAS

Also Published As

Publication number Publication date
NO884279D0 (en) 1988-09-27
CA1301412C (en) 1992-05-26
NZ226104A (en) 1990-05-28
FI93231C (en) 1995-03-10
AU2283288A (en) 1989-04-06
NO172698B (en) 1993-05-18
ZA887229B (en) 1989-06-28
FI884432A0 (en) 1988-09-27
EP0309998A3 (en) 1991-07-17
NO172698C (en) 1993-08-25
ES2049234T3 (en) 1994-04-16
DE3887948D1 (en) 1994-03-31
JP2510424B2 (en) 1996-06-26
FI93231B (en) 1994-11-30
EP0309998A2 (en) 1989-04-05
SE8703718L (en) 1989-03-29
SE460543B (en) 1989-10-23
NO884279L (en) 1989-03-29
FI884432A (en) 1989-03-29
EP0309998B1 (en) 1994-02-23
JPH01104894A (en) 1989-04-21
DE3887948T2 (en) 1994-08-18
ATE101886T1 (en) 1994-03-15
AU605913B2 (en) 1991-01-24

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