GB1122400A - Wood pulp preparation - Google Patents

Wood pulp preparation

Info

Publication number
GB1122400A
GB1122400A GB4016364A GB4016364A GB1122400A GB 1122400 A GB1122400 A GB 1122400A GB 4016364 A GB4016364 A GB 4016364A GB 4016364 A GB4016364 A GB 4016364A GB 1122400 A GB1122400 A GB 1122400A
Authority
GB
United Kingdom
Prior art keywords
pulp
gas
wood pulp
contact
temperature
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
GB4016364A
Inventor
Marcello Antonio Bene Malpiedi
Sipko Huismans
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.)
USUTU PULP Co Ltd
Original Assignee
USUTU PULP Co 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 USUTU PULP Co Ltd filed Critical USUTU PULP Co Ltd
Priority to GB4016364A priority Critical patent/GB1122400A/en
Publication of GB1122400A publication Critical patent/GB1122400A/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
    • D21C9/00—After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters ; Treatment of dilute or dewatered pulp or process improvement taking place after obtaining the raw cellulosic material and not provided for elsewhere
    • D21C9/001—Modification of pulp properties
    • D21C9/002—Modification of pulp properties by chemical means; preparation of dewatered pulp, e.g. in sheet or bulk form, containing special additives
    • D21C9/004—Modification of pulp properties by chemical means; preparation of dewatered pulp, e.g. in sheet or bulk form, containing special additives inorganic compounds

Abstract

The properties of wood pulp are improved by contacting the wet pulp with a gas containing sulphur dioxide in a concentration of less than 5%. The pulp may be dried by contact with this gas or subsequently. The gas may be heated or at superatmospheric pressure. It may contact the pulp initially at a temperature between 300 DEG and 550 DEG C and finally at a temperature between 90 DEG and 120 DEG C under a degree of turbulence enough to prevent charring. The gas may be predominantly air, or may be substantially free from oxygen. In the Examples, the pulp treated is a sulphate kraft pulp.
GB4016364A 1964-10-02 1964-10-02 Wood pulp preparation Expired GB1122400A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB4016364A GB1122400A (en) 1964-10-02 1964-10-02 Wood pulp preparation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4016364A GB1122400A (en) 1964-10-02 1964-10-02 Wood pulp preparation

Publications (1)

Publication Number Publication Date
GB1122400A true GB1122400A (en) 1968-08-07

Family

ID=10413503

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4016364A Expired GB1122400A (en) 1964-10-02 1964-10-02 Wood pulp preparation

Country Status (1)

Country Link
GB (1) GB1122400A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0060104A1 (en) * 1981-03-06 1982-09-15 Courtaulds Plc Drying wood pulp

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0060104A1 (en) * 1981-03-06 1982-09-15 Courtaulds Plc Drying wood pulp

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