GB156512A - Improvements in or relating to the treatment of plant fibres and the like - Google Patents

Improvements in or relating to the treatment of plant fibres and the like

Info

Publication number
GB156512A
GB156512A GB399/21A GB39921A GB156512A GB 156512 A GB156512 A GB 156512A GB 399/21 A GB399/21 A GB 399/21A GB 39921 A GB39921 A GB 39921A GB 156512 A GB156512 A GB 156512A
Authority
GB
United Kingdom
Prior art keywords
acetate
lye
sulphurous
mixture
preparation
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
GB399/21A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of GB156512A publication Critical patent/GB156512A/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

  • Paper (AREA)

Abstract

156,512. M³ller, M., and Heigis, O. Feb. 12, 1919, [Convention date]. Pulp, preparation of; waste products, treatment and utilization of.-In the preparation of cellulose from plants and plant fibres, such as jute, hemp, manilla, " cotton," reeds, bamboo, esparto, and the like, the materials are digested with weakly alkaline or neutral lye containing one part of an alkali acetate and two parts of an alkali sulphite under pressure. The waste liquor may be acidified with sulphuric acid or sodium bisulphate, and a mixture of sulphurous acid and acetic acid boiled off, the residual liquor being evaporated to dryness and incinerated to produce a raw soda lye which may be converted into a mixture of alkaline acetate and sulphite for re-use by adding the mixture of sulphurous and acetic acids boiled off. The waste liquor may be treated with caustic lime and then with sodium sulphate, a solution of sodium acetate being obtained and calcium monosulphite and sulphate precipitated. Sulphurous and acetic acids may be obtained from the monosulphate and acetate and used for the preparation of fresh lye. According to the Specification as open to inspection under Sect. 91 (3) (a), inert salfs may be present in the lye. This subject-matter does not appear in the Specification as accepted.
GB399/21A 1914-02-12 1921-01-05 Improvements in or relating to the treatment of plant fibres and the like Expired GB156512A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE156512X 1914-02-12

Publications (1)

Publication Number Publication Date
GB156512A true GB156512A (en) 1922-03-16

Family

ID=5677868

Family Applications (1)

Application Number Title Priority Date Filing Date
GB399/21A Expired GB156512A (en) 1914-02-12 1921-01-05 Improvements in or relating to the treatment of plant fibres and the like

Country Status (2)

Country Link
DE (1) DE284681C (en)
GB (1) GB156512A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2725227A (en) * 1953-10-20 1955-11-29 United States Steel Corp Furnace lining and refractory brick and method of retarding disintegration thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2725227A (en) * 1953-10-20 1955-11-29 United States Steel Corp Furnace lining and refractory brick and method of retarding disintegration thereof

Also Published As

Publication number Publication date
DE284681C (en)

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