ES425711A1 - Procedimiento para la desliquificacion de un material lig- nocelulosico. - Google Patents

Procedimiento para la desliquificacion de un material lig- nocelulosico.

Info

Publication number
ES425711A1
ES425711A1 ES425711A ES425711A ES425711A1 ES 425711 A1 ES425711 A1 ES 425711A1 ES 425711 A ES425711 A ES 425711A ES 425711 A ES425711 A ES 425711A ES 425711 A1 ES425711 A1 ES 425711A1
Authority
ES
Spain
Prior art keywords
lignocellulosic material
oxygen
minutes
alkali metal
weight
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.)
Expired
Application number
ES425711A
Other languages
English (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.)
PPG Architectural Coatings Canada Inc
Original Assignee
Canadian Industries Ltd
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 Canadian Industries Ltd filed Critical Canadian Industries Ltd
Publication of ES425711A1 publication Critical patent/ES425711A1/es
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
    • D21C3/26—Multistage processes
    • D21C3/263—Multistage processes at least one stage being in presence of oxygen

Landscapes

  • Paper (AREA)

Abstract

Procedimiento para la deslignificación de un material lignocelulósico, caracterizado porque comprende las etapas de: (1) tratar el material lignocelulósico en un recipiente de reacción cerrado con un licor de reducción a pulpa que contiene un hidróxido de metal alcalino en mezcla o no con un sulfuro de metal alcalino, a una temperatura de 160 a 195ºC, durante un periodo no superior a 120 minutos y preferiblemente no superior a 90 minutos, adaptándose la temperatura y el periodo de tratamiento para proporcionar un rendimiento en pulpa de 55 a 65% en peso; (2) desplazar el licor de reducción a pulpa del material lignocelulósico con agua, o con una solución acuosa de hidróxido de metal alcalino; (3) tratar el material lignocelulósico, sin una desfibrilación previa, en una consistencia de 2 a 30% en peso, en suspensión acuosa, durante 0,5 a 30 minutos a 20-90ºC, con 2 a 20% en peso de hidróxido de metal alcalino, (4) tratar el material lignocelulósico alcalino en medio acuoso, en una consistencia de 3 a 35% en peso, con oxígeno o un gas que contiene oxígeno, durante 10 a 120 minutos, a una temperatura de 80 a 140ºC y una presión parcial de oxígeno de 2,1 a 14 kg /cm2 y (5) lavar con agua el material lignocelulósico tratado con oxigeno.
ES425711A 1973-04-26 1974-04-26 Procedimiento para la desliquificacion de un material lig- nocelulosico. Expired ES425711A1 (es)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB1979473 1973-04-26
GB6030373A GB1449828A (en) 1973-04-26 1973-12-31 Oxygen pulping process

Publications (1)

Publication Number Publication Date
ES425711A1 true ES425711A1 (es) 1976-12-01

Family

ID=26254252

Family Applications (1)

Application Number Title Priority Date Filing Date
ES425711A Expired ES425711A1 (es) 1973-04-26 1974-04-26 Procedimiento para la desliquificacion de un material lig- nocelulosico.

Country Status (8)

Country Link
US (1) US3888727A (es)
JP (1) JPS5029801A (es)
BR (1) BR7403415D0 (es)
CA (1) CA1035508A (es)
DE (1) DE2420381A1 (es)
ES (1) ES425711A1 (es)
GB (1) GB1449828A (es)
SE (1) SE407816B (es)

Families Citing this family (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1073161A (en) * 1975-09-05 1980-03-11 Canadian Industries Limited Delignification process
JPS52148201A (en) * 1976-06-01 1977-12-09 Toyo Pulp Co Ltd Process for making alkali pulp and lignin separation
ZA773044B (en) * 1976-06-02 1978-04-26 Australian Paper Manufacturers Improvements in pulping processes
CA1097463A (en) * 1976-12-13 1981-03-17 Naphtali N. Vanderhoek Pulping processes
DE2925544A1 (de) * 1979-06-25 1981-01-22 Bayer Ag Verfahren zur delignifizierung von lignocellulose-materialien
IT1209352B (it) * 1980-09-22 1989-07-16 Nardi Franco Processo per la produzione di cellulose chimiche e/o paste per carte, nonche'impianto e relativi componenti per l'attuazione del processo indicato
US5525195A (en) * 1989-02-15 1996-06-11 Union Camp Patent Holding, Inc. Process for high consistency 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
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
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
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
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
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
US5441603A (en) * 1990-05-17 1995-08-15 Union Camp Patent Holding, Inc. Method for chelation of pulp prior to ozone delignification
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
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
US6241851B1 (en) 1998-03-03 2001-06-05 Andritz-Ahlstrom Inc. Treatment of cellulose material with additives while producing cellulose pulp
CA2318027C (en) 1999-09-13 2008-07-08 Andritz-Ahlstrom Inc. Treating pulp with yield or strength-enhancing additive
US8961740B2 (en) 2010-06-10 2015-02-24 Packaging Corporation Of America Method of manufacturing pulp for corrugated medium
WO2012047832A2 (en) * 2010-10-07 2012-04-12 Shell Oil Company Process for the production of alcohols from biomass
US10266852B2 (en) * 2013-12-06 2019-04-23 Alliance For Sustainable Energy, Llc Lignin conversion to fuels, chemicals and materials
US10017792B2 (en) 2014-07-18 2018-07-10 Alliance For Sustainable Energy, Llc Biomass conversion to fuels and chemicals
US11136601B2 (en) 2018-08-02 2021-10-05 Alliance For Sustainable Energy, Llc Conversion of S-lignin compounds to useful intermediates
CN113416124B (zh) * 2021-06-21 2022-06-07 山东裕滨新材料有限公司 基于2-烷基蒽醌闭环废液制备蒽醌替代助剂的方法
US12011845B2 (en) * 2021-07-15 2024-06-18 The United States, As Represented By The Secretary Of Agriculture Construction of structural materials from lumber using a carbonate or oxygen pre-treatment and densification

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE334286B (es) * 1968-12-05 1971-04-19 Mo Och Domsjoe Ab
US3716447A (en) * 1969-12-15 1973-02-13 Dow Chemical Co Delignification and bleaching of cellulose pulp with oxygen and alkali in the presence of magnesium chloride inhibitor
CA895756A (en) * 1970-04-03 1972-03-21 Macmillan Bloedel Limited Two-stage soda-oxygen pulping
SE360128C (sv) * 1970-08-25 1983-10-31 Mo Och Domsjoe Ab Sett att bleka cellulosamassa med en syreinnehallande gas i nervaro av alkali
US3798119A (en) * 1972-04-24 1974-03-19 Scott Paper Co Process for bleaching kraft pulp with oxygen in the presence of white liquor from a kraft recovery system

Also Published As

Publication number Publication date
BR7403415D0 (pt) 1974-11-19
SE407816B (sv) 1979-04-23
CA1035508A (en) 1978-08-01
AU6829074A (en) 1975-10-30
US3888727A (en) 1975-06-10
GB1449828A (en) 1976-09-15
JPS5029801A (es) 1975-03-25
DE2420381A1 (de) 1974-11-07

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