FR2343855A1 - Wood chip decomposition process - has an initial thermal and oxygen treatment to increase wood yield - Google Patents

Wood chip decomposition process - has an initial thermal and oxygen treatment to increase wood yield

Info

Publication number
FR2343855A1
FR2343855A1 FR7707412A FR7707412A FR2343855A1 FR 2343855 A1 FR2343855 A1 FR 2343855A1 FR 7707412 A FR7707412 A FR 7707412A FR 7707412 A FR7707412 A FR 7707412A FR 2343855 A1 FR2343855 A1 FR 2343855A1
Authority
FR
France
Prior art keywords
wood
decomposition process
oxygen treatment
initial thermal
yield
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.)
Pending
Application number
FR7707412A
Other languages
French (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.)
Union Carbide Corp
Original Assignee
Union Carbide Corp
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 Union Carbide Corp filed Critical Union Carbide Corp
Publication of FR2343855A1 publication Critical patent/FR2343855A1/en
Pending 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
    • D21C1/00—Pretreatment of the finely-divided materials before digesting
    • D21C1/08—Pretreatment of the finely-divided materials before digesting with oxygen-generating compounds

Landscapes

  • Paper (AREA)
  • Chemical And Physical Treatments For Wood And The Like (AREA)
  • Debarking, Splitting, And Disintegration Of Timber (AREA)
  • Dry Formation Of Fiberboard And The Like (AREA)

Abstract

Process for breaking down wood chips, by chemical means, is claimed, where there is a water content in the wood material. Before the chemical decomposition process, the wood chips are placed in a pressure reactor to be treated by heat and oxygen so that the wood chips retain their water content. Pre-treatment phase ensures that the wood yielding process is accelerated to gain more slurry from the wood supply.
FR7707412A 1976-03-12 1977-03-11 Wood chip decomposition process - has an initial thermal and oxygen treatment to increase wood yield Pending FR2343855A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US66625776A 1976-03-12 1976-03-12

Publications (1)

Publication Number Publication Date
FR2343855A1 true FR2343855A1 (en) 1977-10-07

Family

ID=24673454

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7707412A Pending FR2343855A1 (en) 1976-03-12 1977-03-11 Wood chip decomposition process - has an initial thermal and oxygen treatment to increase wood yield

Country Status (10)

Country Link
JP (1) JPS52110902A (en)
AU (1) AU504413B2 (en)
BR (1) BR7701481A (en)
DE (1) DE2710700A1 (en)
FI (1) FI770790A (en)
FR (1) FR2343855A1 (en)
NO (1) NO770870L (en)
SE (1) SE7702781L (en)
TR (1) TR19409A (en)
ZA (1) ZA771491B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4859543A (en) * 1987-04-28 1989-08-22 Kennametal Inc. Earth working tool having a working element fabricated from cemented tungsten carbide compositions with enhanced properties

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5460696A (en) * 1993-08-12 1995-10-24 The Boc Group, Inc. Oxygen delignification method incorporating wood pulp mixing apparatus
JP4958166B2 (en) * 2006-05-31 2012-06-20 独立行政法人産業技術総合研究所 Treatment of plant biomass with alcohol in the presence of oxygen

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB185421A (en) * 1921-09-01 1922-12-14 Gaston Amedee Mourlaque An improved process for transforming vegetable matter into paper pulp
GB481631A (en) * 1935-12-31 1938-03-15 Theodor Kleinert Process for the decomposition of wood for the production of cellulose
FR2337224A1 (en) * 1976-01-05 1977-07-29 Weyerhaeuser Co DELIGNIFICATION BY OXYGEN

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE391544C (en) * 1974-12-10 1985-10-28 Billeruds Ab SET FOR FORCED HEART MATCHING WOOD TIP

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB185421A (en) * 1921-09-01 1922-12-14 Gaston Amedee Mourlaque An improved process for transforming vegetable matter into paper pulp
GB481631A (en) * 1935-12-31 1938-03-15 Theodor Kleinert Process for the decomposition of wood for the production of cellulose
FR2337224A1 (en) * 1976-01-05 1977-07-29 Weyerhaeuser Co DELIGNIFICATION BY OXYGEN

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4859543A (en) * 1987-04-28 1989-08-22 Kennametal Inc. Earth working tool having a working element fabricated from cemented tungsten carbide compositions with enhanced properties

Also Published As

Publication number Publication date
JPS52110902A (en) 1977-09-17
DE2710700A1 (en) 1977-09-15
SE7702781L (en) 1977-09-13
TR19409A (en) 1979-03-01
BR7701481A (en) 1977-11-29
AU504413B2 (en) 1979-10-11
FI770790A (en) 1977-09-13
ZA771491B (en) 1978-02-22
NO770870L (en) 1977-09-13
AU2317777A (en) 1978-09-14

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