DE3267062D1 - Method for the delignification of wood and other lignocellulosic products - Google Patents

Method for the delignification of wood and other lignocellulosic products

Info

Publication number
DE3267062D1
DE3267062D1 DE8282810536T DE3267062T DE3267062D1 DE 3267062 D1 DE3267062 D1 DE 3267062D1 DE 8282810536 T DE8282810536 T DE 8282810536T DE 3267062 T DE3267062 T DE 3267062T DE 3267062 D1 DE3267062 D1 DE 3267062D1
Authority
DE
Germany
Prior art keywords
liquid
phenols
solid
aqueous
delignification
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
DE8282810536T
Other languages
German (de)
Inventor
Herve Tournier
Allan Johansson
Jean-Pierre Sachetto
Jean-Michel Armanet
Jean-Pierre Michel
Alain Roman
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.)
HYDROCEL Srl
Battelle Memorial Institute Inc
Original Assignee
HYDROCEL Srl
Battelle Memorial Institute Inc
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 HYDROCEL Srl, Battelle Memorial Institute Inc filed Critical HYDROCEL Srl
Application granted granted Critical
Publication of DE3267062D1 publication Critical patent/DE3267062D1/en
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
    • D21C3/003—Pulping cellulose-containing materials with organic compounds

Landscapes

  • Compounds Of Unknown Constitution (AREA)
  • Chemical And Physical Treatments For Wood And The Like (AREA)
  • Paper (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Polysaccharides And Polysaccharide Derivatives (AREA)
  • Stringed Musical Instruments (AREA)
  • Saccharide Compounds (AREA)

Abstract

A method for delignifying ligno-cellulosic materials and efficiently separate from each other the constituents thereof. Said materials which optionally may be prehydrolized are heated in an aqueous acid medium in the presence of phenol compounds whereby the ratio by weight of liquid to solid is at least 0,5. In the case of low liquid solid ratios i.e. below about 4:1 further aqueous liquid is added to the reaction mass after pulping to aid filtration and draining. After isolating the purified solid cellulose pulp, the liquid phase separates into two layers: an aqueous layer rich with pentoses and an organic layer rich with phenols and lignin, the latter providing, by distillation and pyrolysis of the residue, a quantity of phenols at least equal to that of the phenols used in the delignification stage.
DE8282810536T 1981-12-10 1982-12-09 Method for the delignification of wood and other lignocellulosic products Expired DE3267062D1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US32936081A 1981-12-10 1981-12-10

Publications (1)

Publication Number Publication Date
DE3267062D1 true DE3267062D1 (en) 1985-11-28

Family

ID=23285029

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8282810536T Expired DE3267062D1 (en) 1981-12-10 1982-12-09 Method for the delignification of wood and other lignocellulosic products

Country Status (12)

Country Link
EP (2) EP0097188A1 (en)
AT (1) ATE16206T1 (en)
BE (1) BE895299A (en)
BR (1) BR8208011A (en)
CA (1) CA1210209A (en)
CH (1) CH653054A5 (en)
DE (1) DE3267062D1 (en)
ES (1) ES518003A0 (en)
FI (1) FI70938C (en)
FR (1) FR2518141B1 (en)
NO (1) NO832783L (en)
WO (1) WO1983002125A1 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI77061C (en) * 1986-12-31 1989-01-10 Neste Oy Process for separating lignin and phenol from phenol solutions
FI77062C (en) * 1986-12-31 1989-01-10 Neste Oy Process for circulating phenol in a phenolic boiling process of lig nocellulose material
DE19856582C1 (en) * 1998-12-08 2001-03-15 Rhodia Acetow Ag Process for the production of chemical pulp from wood chips
CN102186871B (en) * 2008-10-23 2014-03-19 独立行政法人科学技术振兴机构 Concentrated acid treatment unit, concentrated acid treatment method, plant resource phase separation type conversion device and conversion method
CA3110389A1 (en) * 2021-02-25 2022-08-25 Sixring Inc. Modified sulfuric acid and uses thereof
CN113307983B (en) * 2021-05-21 2022-08-05 北京林业大学 Method for separating lignin by green solvent quickly and in high yield
CN116770613A (en) * 2023-08-01 2023-09-19 贵州大学 Thermotropic liquid-liquid phase separation solvent and cellulose pretreatment and component separation method

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE457089A (en) * 1943-02-27
FR989191A (en) * 1944-09-07 1951-09-05 Traitement Chimique Des Vegeta Process for treating fibrous materials, more particularly plants with a view to obtaining cellulose
US3215588A (en) * 1963-08-15 1965-11-02 Lummus Co Continuous impregnation, cooking, and washing of fibrous material
AT336992B (en) * 1975-02-18 1977-06-10 Visch Khim T I Nis PROCESS AND DEVICE FOR PRODUCING FIBER MATERIAL FROM PLANT RAW MATERIALS
DE3161585D1 (en) * 1980-06-20 1984-01-12 Battelle Memorial Institute A method for the delignification of wood and other ligno-cellulosic products
EP0054015B1 (en) * 1980-11-20 1985-01-16 Simmering-Graz-Pauker Aktiengesellschaft Process and apparatus for producing cellulose

Also Published As

Publication number Publication date
FI824244L (en) 1983-06-11
NO832783L (en) 1983-08-01
EP0082116A1 (en) 1983-06-22
EP0097188A1 (en) 1984-01-04
EP0082116B1 (en) 1985-10-23
FR2518141A1 (en) 1983-06-17
FI70938C (en) 1986-10-27
BE895299A (en) 1983-06-09
WO1983002125A1 (en) 1983-06-23
FR2518141B1 (en) 1986-08-14
ES8404725A1 (en) 1984-05-01
ATE16206T1 (en) 1985-11-15
ES518003A0 (en) 1984-05-01
CH653054A5 (en) 1985-12-13
BR8208011A (en) 1983-11-08
CA1210209A (en) 1986-08-26
FI824244A0 (en) 1982-12-10
FI70938B (en) 1986-07-18

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee