GB147232A - Improved process for the treatment of wood and other cellulose-containing materials - Google Patents

Improved process for the treatment of wood and other cellulose-containing materials

Info

Publication number
GB147232A
GB147232A GB19313/20A GB1931320A GB147232A GB 147232 A GB147232 A GB 147232A GB 19313/20 A GB19313/20 A GB 19313/20A GB 1931320 A GB1931320 A GB 1931320A GB 147232 A GB147232 A GB 147232A
Authority
GB
United Kingdom
Prior art keywords
pressure
cellulose
containing materials
wood
treatment
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
GB19313/20A
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.)
Zellsloff Fabrik Waldhof AG
Original Assignee
Zellsloff Fabrik Waldhof AG
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 Zellsloff Fabrik Waldhof AG filed Critical Zellsloff Fabrik Waldhof AG
Publication of GB147232A publication Critical patent/GB147232A/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
    • D21C3/22—Other features of pulping processes

Abstract

147,232. Zellstofffabrik Waldhof, Clemm, H., and Willstatter, R. Out. 19, 1916, [Convention date]. Pulp, preparation of.-To avoid the deleterious effect of alkalies, acids, and salts on cellulose fibres and also on the by-products resin, tannin, carbohydrates &c., due to the high temperatures obtained in the ordinary methods of treating wood and other cellulose-containing materials under pressure, the pressure is produced externally and independently of the temperature used, by forcing or pumping air or other gas or suitable liquids, such as that used for treating wood, into the apparatus in which the material is being treated. Fifty atmospheres pressure or more may be used. The apparatus may be first exhausted, and alternate vacuum and pressure may be applied repeatedly. The process may be applied to reagents used for other purposes such as saccharification.
GB19313/20A 1916-10-19 1920-07-07 Improved process for the treatment of wood and other cellulose-containing materials Expired GB147232A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE304214T 1916-10-19

Publications (1)

Publication Number Publication Date
GB147232A true GB147232A (en) 1921-09-29

Family

ID=5671872

Family Applications (1)

Application Number Title Priority Date Filing Date
GB19313/20A Expired GB147232A (en) 1916-10-19 1920-07-07 Improved process for the treatment of wood and other cellulose-containing materials

Country Status (4)

Country Link
CH (1) CH90313A (en)
DE (1) DE304214C (en)
FR (1) FR519793A (en)
GB (1) GB147232A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4093507A (en) * 1976-11-17 1978-06-06 Torsten Gillberg Method of liquid treating cellulose fibres with elastic pressure shocks
US4172006A (en) * 1976-08-26 1979-10-23 Weyerhaeuser Company Method of delignifying wood chips with oxygen by adding cooking liquor under pressure

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2474862A (en) * 1942-10-15 1949-07-05 Kamyr Ab Process and apparatus for continuous digestion of fibrous materials
DE956644C (en) * 1944-04-01 1957-01-24 Arne Johan Arthur Asplund Dipl Device and method for fiberizing lignocellulose-containing fiber material
DE1042371B (en) * 1952-03-31 1958-10-30 Herbert Kurth Process for the production of powdery lignin for the production of molding compounds in the production of pulp products
US2640774A (en) * 1953-01-27 1953-06-02 Pulp And Papen Res Inst Of Can Production of cellulose pulp
DE1134577B (en) * 1958-03-22 1962-08-09 Aschaffenburger Zellstoffwerke Pretreatment of fir and spruce wood chips to produce cellulose using the acid sulphite process
SE308443B (en) * 1965-02-11 1969-02-10 Defibrator Ab

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4172006A (en) * 1976-08-26 1979-10-23 Weyerhaeuser Company Method of delignifying wood chips with oxygen by adding cooking liquor under pressure
US4093507A (en) * 1976-11-17 1978-06-06 Torsten Gillberg Method of liquid treating cellulose fibres with elastic pressure shocks

Also Published As

Publication number Publication date
CH90313A (en) 1921-08-16
FR519793A (en) 1921-06-15
DE304214C (en)

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