FI914252A - Preparation of cellulose pulp - Google Patents

Preparation of cellulose pulp Download PDF

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Publication number
FI914252A
FI914252A FI914252A FI914252A FI914252A FI 914252 A FI914252 A FI 914252A FI 914252 A FI914252 A FI 914252A FI 914252 A FI914252 A FI 914252A FI 914252 A FI914252 A FI 914252A
Authority
FI
Finland
Prior art keywords
sulphur content
different
pulp
preparation
white
Prior art date
Application number
FI914252A
Other languages
Finnish (fi)
Swedish (sv)
Other versions
FI914252A0 (en
FI96782B (en
Inventor
Kaj Henricson
Original Assignee
Ahlstroem Oy
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 Ahlstroem Oy filed Critical Ahlstroem Oy
Publication of FI914252A0 publication Critical patent/FI914252A0/en
Priority to FI914252A priority Critical patent/FI96782B/en
Priority to FI915482A priority patent/FI92725C/en
Priority to FI916097A priority patent/FI916097A/en
Priority to US07/915,235 priority patent/US5340440A/en
Priority to CA002077216A priority patent/CA2077216C/en
Priority to FR9210648A priority patent/FR2681081A1/en
Priority to SE9202561A priority patent/SE512614C2/en
Priority to JP4239554A priority patent/JPH07122226B2/en
Priority to PT100847A priority patent/PT100847A/en
Publication of FI914252A publication Critical patent/FI914252A/en
Application granted granted Critical
Publication of FI96782B publication Critical patent/FI96782B/en

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  • Paper (AREA)
  • Polysaccharides And Polysaccharide Derivatives (AREA)

Abstract

This invention concerns an improvement in the various processes making up the production of pulp, both regarding the processes themselves and the arrangements used in them. This is achieved in that two different white liquors with different sulphur content are used in the production of the pulp. The chemicals are jointly recovered and then used to prepare white liquors with different sulphur content. According to the invention, for example, sulphur-rich white liquor is used at the start of the cooking and white liquor with low sulphur content is used at a later stage of the cooking.
FI914252A 1991-09-09 1991-09-09 Production of cellulose pulp FI96782B (en)

Priority Applications (9)

Application Number Priority Date Filing Date Title
FI914252A FI96782B (en) 1991-09-09 1991-09-09 Production of cellulose pulp
FI915482A FI92725C (en) 1991-09-09 1991-11-21 Process for preparing boiling liquid
FI916097A FI916097A (en) 1991-09-09 1991-12-23 FOERFARANDE FOER AOTERVINNING AV KEMIKALIER
US07/915,235 US5340440A (en) 1991-09-09 1992-07-20 Method for recovering chemicals using recovery boiler having at least 2 different melt sections
CA002077216A CA2077216C (en) 1991-09-09 1992-08-31 Manufacture of cellulose
FR9210648A FR2681081A1 (en) 1991-09-09 1992-09-07 Process and device for the recovery of chemical products in the manufacture of cellulose
SE9202561A SE512614C2 (en) 1991-09-09 1992-09-07 Recycling of chemicals with different sulfur content
JP4239554A JPH07122226B2 (en) 1991-09-09 1992-09-08 Cellulose production
PT100847A PT100847A (en) 1991-09-09 1992-09-08 CELLULOSE MANUFACTURING PROCESS

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI914252A FI96782B (en) 1991-09-09 1991-09-09 Production of cellulose pulp
FI914252 1991-11-21

Publications (3)

Publication Number Publication Date
FI914252A0 FI914252A0 (en) 1991-09-09
FI914252A true FI914252A (en) 1993-03-10
FI96782B FI96782B (en) 1996-05-15

Family

ID=8533094

Family Applications (1)

Application Number Title Priority Date Filing Date
FI914252A FI96782B (en) 1991-09-09 1991-09-09 Production of cellulose pulp

Country Status (1)

Country Link
FI (1) FI96782B (en)

Also Published As

Publication number Publication date
FI914252A0 (en) 1991-09-09
FI96782B (en) 1996-05-15

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Legal Events

Date Code Title Description
BB Publication of examined application
GB Transfer or assigment of application

Owner name: AHLSTROM MACHINERY OY