FR2252440A1 - - Google Patents

Info

Publication number
FR2252440A1
FR2252440A1 FR7438432A FR7438432A FR2252440A1 FR 2252440 A1 FR2252440 A1 FR 2252440A1 FR 7438432 A FR7438432 A FR 7438432A FR 7438432 A FR7438432 A FR 7438432A FR 2252440 A1 FR2252440 A1 FR 2252440A1
Authority
FR
France
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
FR7438432A
Other versions
FR2252440B1 (fr
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.)
SKOGSAGARNAS INDUSTRI SW AB
SKOGSAEGARNAS IND AB
Original Assignee
SKOGSAGARNAS INDUSTRI SW AB
SKOGSAEGARNAS IND 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 SKOGSAGARNAS INDUSTRI SW AB, SKOGSAEGARNAS IND AB filed Critical SKOGSAGARNAS INDUSTRI SW AB
Publication of FR2252440A1 publication Critical patent/FR2252440A1/fr
Application granted granted Critical
Publication of FR2252440B1 publication Critical patent/FR2252440B1/fr
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
    • D21C3/00—Pulping cellulose-containing materials
    • D21C3/22—Other features of pulping processes
    • D21C3/228—Automation of the pulping processes
FR7438432A 1973-11-23 1974-11-22 Expired FR2252440B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE7315894A SE381897C (sv) 1973-11-23 1973-11-23 Sett for satsvis alkalisk massakokning i kombination med kontinuerlig syredelignifiering

Publications (2)

Publication Number Publication Date
FR2252440A1 true FR2252440A1 (fr) 1975-06-20
FR2252440B1 FR2252440B1 (fr) 1978-07-07

Family

ID=20319193

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7438432A Expired FR2252440B1 (fr) 1973-11-23 1974-11-22

Country Status (6)

Country Link
US (1) US4595455A (fr)
CA (1) CA1043515A (fr)
ES (1) ES432183A1 (fr)
FI (1) FI55225C (fr)
FR (1) FR2252440B1 (fr)
SE (1) SE381897C (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4096028A (en) * 1976-11-26 1978-06-20 Nalco Chemical Company Feed forward control of dissolved solids in a countercurrent separation and washing zone
US4227966A (en) * 1978-03-10 1980-10-14 Sunds Aktiebolag Method for combusting a mixture of spent magnesium sulphite digestion liquor and alkaline oxygen bleach liquor
US4595455A (en) * 1973-11-23 1986-06-17 Mannbro Systems Handelsbolag Method for controlling batch alkaline pulp digestion in combination with continuous alkaline oxygen delignification

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE448889B (sv) * 1985-11-06 1987-03-23 Sunds Defibrator Sett for behandling av returpapper
SE465730C (sv) * 1988-03-17 2001-10-08 Kvaerner Pulping Tech Sätt vid delignifiering av fiberhaltig cellulosamassa
US5211811A (en) * 1989-02-15 1993-05-18 Union Camp Patent Holding, Inc. Process for high consistency oxygen delignification of alkaline treated pulp followed by ozone delignification
US5085734A (en) * 1989-02-15 1992-02-04 Union Camp Patent Holding, Inc. Methods of high consistency oxygen delignification using a low consistency alkali pretreatment
US5188708A (en) * 1989-02-15 1993-02-23 Union Camp Patent Holding, Inc. Process for high consistency oxygen delignification followed by ozone relignification
US5217574A (en) * 1989-02-15 1993-06-08 Union Camp Patent Holdings Inc. Process for oxygen delignifying high consistency pulp by removing and recycling pressate from alkaline pulp
US5409570A (en) * 1989-02-15 1995-04-25 Union Camp Patent Holding, Inc. Process for ozone bleaching of oxygen delignified pulp while conveying the pulp through a reaction zone
US5525195A (en) * 1989-02-15 1996-06-11 Union Camp Patent Holding, Inc. Process for high consistency delignification using a low consistency alkali pretreatment
US5173153A (en) * 1991-01-03 1992-12-22 Union Camp Patent Holding, Inc. Process for enhanced oxygen delignification using high consistency and a split alkali addition
US5164044A (en) * 1990-05-17 1992-11-17 Union Camp Patent Holding, Inc. Environmentally improved process for bleaching lignocellulosic materials with ozone
US5164043A (en) * 1990-05-17 1992-11-17 Union Camp Patent Holding, Inc. Environmentally improved process for bleaching lignocellulosic materials with ozone
US5441603A (en) * 1990-05-17 1995-08-15 Union Camp Patent Holding, Inc. Method for chelation of pulp prior to ozone delignification
SE470538C (sv) * 1992-12-02 1996-02-26 Kvaerner Pulping Tech Sätt vid blekning av massa utan användning av klorhaltiga kemikalier
SE501613C2 (sv) * 1993-08-03 1995-03-27 Kvaerner Pulping Tech Sätt vid integrering av blekning och återvinning vid framställning av massa
US5554259A (en) * 1993-10-01 1996-09-10 Union Camp Patent Holdings, Inc. Reduction of salt scale precipitation by control of process stream Ph and salt concentration
US6210527B1 (en) 1994-03-14 2001-04-03 The Boc Group, Inc. Pulp bleaching method wherein an ozone bleaching waste stream is scrubbed to form an oxygen containing stream
SE9401769L (sv) * 1994-05-24 1995-11-25 Nils Mannbro Flisimpregnering vid pappersmassakokning med sulfidiskt alkali
US5672247A (en) * 1995-03-03 1997-09-30 Union Camp Patent Holding, Inc. Control scheme for rapid pulp delignification and bleaching
US5736004A (en) * 1995-03-03 1998-04-07 Union Camp Patent Holding, Inc. Control scheme for rapid pulp delignification and bleaching
US6514380B1 (en) * 1995-03-08 2003-02-04 Andritz Oy Treatment of chemical pulp

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2671727A (en) * 1948-05-05 1954-03-09 West Virginia Pulp & Paper Co Manufacture of pulp by the alkaline process
US3830688A (en) * 1970-10-23 1974-08-20 Skogsaegarnas Ind Ab Method of reducing the discharge of waste products from pulp mills
US3843473A (en) * 1971-08-23 1974-10-22 Mo Och Domsjoe Ab Impregnation of cellulosic pulp under superatmospheric pressure with waste alkaline oxygan gas bleaching liquor followed by oxygen-alkali bleaching
SE381897C (sv) * 1973-11-23 1977-05-23 Skogegarnas Ind Ab Sett for satsvis alkalisk massakokning i kombination med kontinuerlig syredelignifiering

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4595455A (en) * 1973-11-23 1986-06-17 Mannbro Systems Handelsbolag Method for controlling batch alkaline pulp digestion in combination with continuous alkaline oxygen delignification
US4096028A (en) * 1976-11-26 1978-06-20 Nalco Chemical Company Feed forward control of dissolved solids in a countercurrent separation and washing zone
US4227966A (en) * 1978-03-10 1980-10-14 Sunds Aktiebolag Method for combusting a mixture of spent magnesium sulphite digestion liquor and alkaline oxygen bleach liquor

Also Published As

Publication number Publication date
FI55225B (fi) 1979-02-28
CA1043515A (fr) 1978-12-05
FI332674A (fr) 1975-05-24
FR2252440B1 (fr) 1978-07-07
SE381897C (sv) 1977-05-23
US4595455A (en) 1986-06-17
FI55225C (fi) 1979-06-11
ES432183A1 (es) 1976-09-01
SE381897B (sv) 1975-12-22
SE7315894L (fr) 1975-05-26

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Legal Events

Date Code Title Description
TP Transmission of property
ST Notification of lapse