US1402210A - Production of cellulose from vegetable matter - Google Patents

Production of cellulose from vegetable matter Download PDF

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Publication number
US1402210A
US1402210A US398980A US39898020A US1402210A US 1402210 A US1402210 A US 1402210A US 398980 A US398980 A US 398980A US 39898020 A US39898020 A US 39898020A US 1402210 A US1402210 A US 1402210A
Authority
US
United States
Prior art keywords
cellulose
vegetable matter
fibres
bath
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 - Lifetime
Application number
US398980A
Other languages
English (en)
Inventor
Bustamante Gonzalo Jose
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
Priority to DE1919345314D priority Critical patent/DE345314C/de
Application filed by Individual filed Critical Individual
Priority to US398980A priority patent/US1402210A/en
Priority to GB27904/20A priority patent/GB175330A/en
Application granted granted Critical
Publication of US1402210A publication Critical patent/US1402210A/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • D21C3/02—Pulping cellulose-containing materials with inorganic bases or alkaline reacting compounds, e.g. sulfate processes

Definitions

  • the present invention relates to a cold chemical treatment without pressure, which permits separation of the cellulose from all vegetable matter, impurities and other substances surrounding it. Consideration is taken of the fact that the practical capacity for resistance is limited to a marked degree and, hence, only such materials are used as are favorable to the resistance of the cellulose of the vegetable matter treated, do not deprive it of any of its specific properties, and prevent appreciable loss.
  • the plants, leaves or stems, of leaves and stems, according to their type are harvested and then are suitably dried.
  • the thus prepared vegetable material is then immersed in cold water and separated into coarse fibres in order to facilitate the subsequent penetration by osmosis of the liquid of the treatment bath, this bath being preferably prepared as follows:
  • Anhydrous lime in great quantity is placed on the floor of a container intended for the treatment, and is covered with the vegetable fibres to a desired height.
  • a cold alkaline solution of 2 to 4 B6. is supplied thereto in the form of a shower, and thereafter a certain amount of volatile alkali, preferably ammonia, which may be of 2% strength, is supplied to the surface of the bath in the form of a shower or in any other form by any desired means.
  • a certain amount of volatile alkali preferably ammonia, which may be of 2% strength
  • the fibrous material is thoroughly washed with cold water and is then placed in a fibre press or mill or subjected to the action of other suitable comminuting mechanism.
  • the vegetable material may be placed in a fresh bath of the same character as the previous one, but to which a bleaching agent suited to the vegetable matter under treatment has been added immediately before the introduction of the ammonia or other volatile alkali.
  • Subsequent baths similar to those mentioned for the preliminary treatment, may be used according to the degree of comminution of the fibres.
  • energetic washing with cold water may be carried out for a certain length of time by means of suitable mechanical devices, and the fibres thus obtained may be bleached and refined as considered advisable.
  • cellulose fibres are obtained which are completely separated from vegetable matter, impurities and other surrounding substances, so that they are suitable for industrial use, either Without bleaching or after bleaching and further refinement.
  • the cellulose thus obtained has properties which will compete with those of the best grades of cellulose.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Polysaccharides And Polysaccharide Derivatives (AREA)
  • Paper (AREA)
US398980A 1920-07-26 1920-07-26 Production of cellulose from vegetable matter Expired - Lifetime US1402210A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE1919345314D DE345314C (de) 1920-07-26 1919-08-05 Verfahren zur Gewinnung von Zellulose aus Pflanzenstoffen auf kaltem Wege ohne Anwendung von Druck
US398980A US1402210A (en) 1920-07-26 1920-07-26 Production of cellulose from vegetable matter
GB27904/20A GB175330A (en) 1920-07-26 1920-10-01 Improved process of obtaining cellulose from vegetable matter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US398980A US1402210A (en) 1920-07-26 1920-07-26 Production of cellulose from vegetable matter

Publications (1)

Publication Number Publication Date
US1402210A true US1402210A (en) 1922-01-03

Family

ID=23577610

Family Applications (1)

Application Number Title Priority Date Filing Date
US398980A Expired - Lifetime US1402210A (en) 1920-07-26 1920-07-26 Production of cellulose from vegetable matter

Country Status (3)

Country Link
US (1) US1402210A (de)
DE (1) DE345314C (de)
GB (1) GB175330A (de)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA752864A (en) * 1965-10-12 1967-02-14 Pulp And Paper Research Institute Of Canada Extraction of fibrous cellulosic material with ammonia following treatment with chlorine, chlorine dioxide or other reagents
CN111188215B (zh) * 2020-01-10 2024-10-01 广东叶囵生物科技发展有限公司 一种叶子纤维原浆的制作方法

Also Published As

Publication number Publication date
DE345314C (de) 1921-12-09
GB175330A (en) 1922-02-01

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