FR2193115A1 - Kappa number control in mfr. of sulphate pulp - by analysis of pulping liquor during process in terms of H and Q factors, and adjusting cooking accordingly - Google Patents

Kappa number control in mfr. of sulphate pulp - by analysis of pulping liquor during process in terms of H and Q factors, and adjusting cooking accordingly

Info

Publication number
FR2193115A1
FR2193115A1 FR7325674A FR7325674A FR2193115A1 FR 2193115 A1 FR2193115 A1 FR 2193115A1 FR 7325674 A FR7325674 A FR 7325674A FR 7325674 A FR7325674 A FR 7325674A FR 2193115 A1 FR2193115 A1 FR 2193115A1
Authority
FR
France
Prior art keywords
analysis
kappa number
mfr
factors
terms
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.)
Granted
Application number
FR7325674A
Other languages
French (fr)
Other versions
FR2193115B1 (en
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.)
Mo och Domsjo AB
Original Assignee
Mo och Domsjo 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 Domsjo AB filed Critical Mo och Domsjo AB
Publication of FR2193115A1 publication Critical patent/FR2193115A1/en
Application granted granted Critical
Publication of FR2193115B1 publication Critical patent/FR2193115B1/fr
Granted 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
    • D21C3/00—Pulping cellulose-containing materials
    • D21C3/22—Other features of pulping processes
    • D21C3/228—Automation of the pulping processes

Landscapes

  • Paper (AREA)

Abstract

Method involves sampling the pulping process when initial reactions (comprising the dissolution of readily dissolved substances in the wood to be digested and impregnated) have reached a well determined stage and before delignification has substantially begun. The sampling moment is characterized by means of the Q-factor for the process. The concn. value obtd. from analysis of the sample of pulping liquor is used to determine the cooking intensity expressed as the H-factor needed to obtain a pulp with predetermined Kappa number, and on the basis of this H-factor the alkali concn. in the digester and the time-temp. relationship are controlled for the remaining part of the cook.
FR7325674A 1972-07-14 1973-07-12 Kappa number control in mfr. of sulphate pulp - by analysis of pulping liquor during process in terms of H and Q factors, and adjusting cooking accordingly Granted FR2193115A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE7209341A SE370965B (en) 1972-07-14 1972-07-14

Publications (2)

Publication Number Publication Date
FR2193115A1 true FR2193115A1 (en) 1974-02-15
FR2193115B1 FR2193115B1 (en) 1975-08-22

Family

ID=20276432

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7325674A Granted FR2193115A1 (en) 1972-07-14 1973-07-12 Kappa number control in mfr. of sulphate pulp - by analysis of pulping liquor during process in terms of H and Q factors, and adjusting cooking accordingly

Country Status (7)

Country Link
JP (1) JPS5137962B2 (en)
BR (1) BR7305242D0 (en)
CA (1) CA1015103A (en)
FI (1) FI55364C (en)
FR (1) FR2193115A1 (en)
SE (1) SE370965B (en)
ZA (1) ZA734423B (en)

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
NEANT *

Also Published As

Publication number Publication date
FI55364B (en) 1979-03-30
JPS4957102A (en) 1974-06-03
SE370965B (en) 1974-11-04
BR7305242D0 (en) 1974-09-05
CA1015103A (en) 1977-08-09
JPS5137962B2 (en) 1976-10-19
FR2193115B1 (en) 1975-08-22
FI55364C (en) 1979-07-10
ZA734423B (en) 1974-03-27

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Legal Events

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