SE8900200D0 - METHOD FOR DETERMINING THE SIMILAR SOLUTION FOR ALKALK COOKING - Google Patents

METHOD FOR DETERMINING THE SIMILAR SOLUTION FOR ALKALK COOKING

Info

Publication number
SE8900200D0
SE8900200D0 SE8900200A SE8900200A SE8900200D0 SE 8900200 D0 SE8900200 D0 SE 8900200D0 SE 8900200 A SE8900200 A SE 8900200A SE 8900200 A SE8900200 A SE 8900200A SE 8900200 D0 SE8900200 D0 SE 8900200D0
Authority
SE
Sweden
Prior art keywords
boiling
alkalk
cooking
determining
lignin
Prior art date
Application number
SE8900200A
Other languages
Swedish (sv)
Other versions
SE8900200L (en
Inventor
N R Al
Original Assignee
Kajaani Electronics
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 Kajaani Electronics filed Critical Kajaani Electronics
Publication of SE8900200D0 publication Critical patent/SE8900200D0/en
Publication of SE8900200L publication Critical patent/SE8900200L/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
    • D21C7/00—Digesters
    • D21C7/12—Devices for regulating or controlling

Landscapes

  • Paper (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)
  • Compounds Of Unknown Constitution (AREA)

Abstract

Process for monitoring the content of a lignin fraction which is dissolved in the course of boiling during an alkaline delignification process of wood or other vegetable material, in particular during sulphate or soda anthraquinone boiling. The process is based on the UV absorption of lignin, and the lignin content of the boiling liquor can be determined in each case on the basis of the UV absorption and also on the basis of a separately determined absorption coefficient which depends mainly on the boiling process, the boiling stage and the starting material.
SE8900200A 1988-01-20 1989-01-20 METHOD FOR DETERMINING THE SIMILAR SOLUTION FOR ALKALK COOKING SE8900200L (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FI880226A FI79359C (en) 1988-01-20 1988-01-20 Method for checking the solution of lignin in alkaline pulp boil

Publications (2)

Publication Number Publication Date
SE8900200D0 true SE8900200D0 (en) 1989-01-20
SE8900200L SE8900200L (en) 1989-07-21

Family

ID=8525747

Family Applications (1)

Application Number Title Priority Date Filing Date
SE8900200A SE8900200L (en) 1988-01-20 1989-01-20 METHOD FOR DETERMINING THE SIMILAR SOLUTION FOR ALKALK COOKING

Country Status (3)

Country Link
DE (1) DE3901662A1 (en)
FI (1) FI79359C (en)
SE (1) SE8900200L (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9017325U1 (en) * 1990-12-21 1992-01-02 Siemens Ag, 8000 Muenchen, De
DE19653479C1 (en) * 1996-12-20 1998-09-03 Siemens Ag Process and device for process control and process optimization when bleaching fibrous materials
US6023065A (en) * 1997-03-10 2000-02-08 Alberta Research Council Method and apparatus for monitoring and controlling characteristics of process effluents
US20230002433A1 (en) 2019-12-06 2023-01-05 Basf Se Method for preparation of lignin oligomers
WO2022122575A1 (en) 2020-12-07 2022-06-16 Basf Se Aqueous lactam solution of lignin
JP2024501671A (en) 2020-12-23 2024-01-15 ベーアーエスエフ・エスエー Binder composition for composite articles comprising one or more polyamines and 1,3-dihydroxyacetone, glycolaldehyde, and/or glyceraldehyde
CN116806247A (en) 2020-12-23 2023-09-26 巴斯夫欧洲公司 Base composition for composite articles comprising polyamine and hydroxyacetone

Also Published As

Publication number Publication date
FI79359B (en) 1989-08-31
SE8900200L (en) 1989-07-21
DE3901662A1 (en) 1989-07-27
FI79359C (en) 1989-12-11
FI880226A0 (en) 1988-01-20

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Effective date: 19920801