GB743657A - Improvements in and relating to a process for the production of alkali cellulose - Google Patents

Improvements in and relating to a process for the production of alkali cellulose

Info

Publication number
GB743657A
GB743657A GB2918652A GB2918652A GB743657A GB 743657 A GB743657 A GB 743657A GB 2918652 A GB2918652 A GB 2918652A GB 2918652 A GB2918652 A GB 2918652A GB 743657 A GB743657 A GB 743657A
Authority
GB
United Kingdom
Prior art keywords
slurry
alkali cellulose
liquor
rolls
production
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
GB2918652A
Inventor
William Reginald Weigham
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.)
Akzo Nobel UK PLC
Original Assignee
Courtaulds PLC
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 Courtaulds PLC filed Critical Courtaulds PLC
Priority to GB2918652A priority Critical patent/GB743657A/en
Publication of GB743657A publication Critical patent/GB743657A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
    • C08B1/00—Preparatory treatment of cellulose for making derivatives thereof, e.g. pre-treatment, pre-soaking, activation
    • C08B1/08—Alkali cellulose

Landscapes

  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Biochemistry (AREA)
  • Materials Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Polysaccharides And Polysaccharide Derivatives (AREA)

Abstract

In the production of alkali cellulose by the slurry steeping process wherein cellulose is slurried in caustic soda liquor in a slurry-forming vessel and passed, via a surge tank, continuously and under pressure to a slurry-separating container in which a pair of perforated, peripherally opposed, rotating press rolls is partially immersed, the alkali cellulose being separated on the surface of the rolls and the caustic soda liquor expressed through the perforations in the rolls being returned to the slurry forming vessel, hemicellulose is continuously removed from the system by withdrawing part of the expressed liquor and replacing it by fresh caustic soda liquor before returning the liquor to the slurry-forming vessel, the hemicellulose being removed at such a rate that the pressure of slurry passing to the press rolls and the press weight ratio of the alkali cellulose are maintained constant for a given temperature of operation and for a given rate of production.
GB2918652A 1952-11-19 1952-11-19 Improvements in and relating to a process for the production of alkali cellulose Expired GB743657A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2918652A GB743657A (en) 1952-11-19 1952-11-19 Improvements in and relating to a process for the production of alkali cellulose

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2918652A GB743657A (en) 1952-11-19 1952-11-19 Improvements in and relating to a process for the production of alkali cellulose

Publications (1)

Publication Number Publication Date
GB743657A true GB743657A (en) 1956-01-18

Family

ID=10287525

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2918652A Expired GB743657A (en) 1952-11-19 1952-11-19 Improvements in and relating to a process for the production of alkali cellulose

Country Status (1)

Country Link
GB (1) GB743657A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112442746A (en) * 2019-09-02 2021-03-05 连津格股份公司 Method for producing modal fiber
CN114351272A (en) * 2022-01-11 2022-04-15 南京化纤股份有限公司 Viscose fiber pressed alkali recycling method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112442746A (en) * 2019-09-02 2021-03-05 连津格股份公司 Method for producing modal fiber
CN114351272A (en) * 2022-01-11 2022-04-15 南京化纤股份有限公司 Viscose fiber pressed alkali recycling method

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