GB347297A - Method of manufacturing cellulose - Google Patents

Method of manufacturing cellulose

Info

Publication number
GB347297A
GB347297A GB3977629A GB3977629A GB347297A GB 347297 A GB347297 A GB 347297A GB 3977629 A GB3977629 A GB 3977629A GB 3977629 A GB3977629 A GB 3977629A GB 347297 A GB347297 A GB 347297A
Authority
GB
United Kingdom
Prior art keywords
treatment
cellulose
washing
temperature
exceeding
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
GB3977629A
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 US384361A priority Critical patent/US1457915A/en
Priority to US397484A priority patent/US1511664A/en
Priority to US679755A priority patent/US1509034A/en
Priority to US72602A priority patent/US1742219A/en
Priority to US274367A priority patent/US1864985A/en
Priority to US280966A priority patent/US1862177A/en
Priority to GB1906328A priority patent/GB322763A/en
Priority to FR657770D priority patent/FR657770A/en
Priority to US312936A priority patent/US1825655A/en
Priority to US398677A priority patent/US1931575A/en
Application filed by Individual filed Critical Individual
Priority to GB3977629A priority patent/GB347297A/en
Priority to FR688311D priority patent/FR688311A/en
Priority to US464717A priority patent/US1918250A/en
Publication of GB347297A publication Critical patent/GB347297A/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
    • 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
    • D21C3/26—Multistage processes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
    • F24H1/10—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium
    • F24H1/101—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium using electric energy supply
    • F24H1/106—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium using electric energy supply with electrodes

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Polysaccharides And Polysaccharide Derivatives (AREA)
  • Paper (AREA)

Abstract

347,297. Cellulose. LA ROZA, J. J. DE, Tuinucu, Cuba. Dec. 30, 1929, No. 39776. [Class 96.] In a modification of the process described in Specification 322,763, [Class 96, Paper &c.], for the production of cellulose from annual plants such as canes, corn stalks, straws, and grasses, particularly applicable to the treatment of sugarcane fibre, the material, as free as possible from sugar, is shredded and screened to separate the short fibres and dust therefrom, and the long fibres impregnated with sulphurous acid and then stored for a suitable period, which may be several months. This treatment obviates the tendency to form fungi and other growths. After storing, the material is concentrated and then heated with sulphurous acid at a temperature not exceeding 110‹ C. A few minutes' heating yields a good quality cellulose pulp for paper making and three or more hours is required for the production of high content alpha cellulose such as is suitable for explosives, artificial silk, photographic films, pyroxylin products, cotton substitutes, absorbents, and the like. After washing and squeezing, the material is treated with alkali at a temperature below 100‹ C. For this treatment caustic soda or potash is preferred, but magnesia, lime, &c., sodium sulphate, sulphide, or sulphite may be used or added. Washing, followed by a more vigorous treatment with a similar alkali at a temperature not exceeding 160‹ C. for 4-6 hours, again washing and then bleaching, completes the process. The storing may be omitted and the acid treatment effected in one stage. The short fibres may be similarly treated.
GB3977629A 1920-05-26 1929-12-30 Method of manufacturing cellulose Expired GB347297A (en)

Priority Applications (13)

Application Number Priority Date Filing Date Title
US384361A US1457915A (en) 1920-05-26 1920-05-26 Method of making paper pulp
US397484A US1511664A (en) 1920-07-19 1920-07-19 Process of making fiber for paper, etc
US679755A US1509034A (en) 1923-12-10 1923-12-10 Manufacture of cellulose
US72602A US1742219A (en) 1925-12-01 1925-12-01 Pulp-treating process
US274367A US1864985A (en) 1928-05-01 1928-05-01 Method of manufacturing cellulose
US280966A US1862177A (en) 1928-05-26 1928-05-26 Method of manufacturing cellulose
GB1906328A GB322763A (en) 1929-12-30 1928-06-30 Method of manufacturing cellulose
FR657770D FR657770A (en) 1929-12-30 1928-07-18 Cellulose production process
US312936A US1825655A (en) 1928-10-16 1928-10-16 Method of manufacturing cellulose
US398677A US1931575A (en) 1929-10-10 1929-10-10 Method of manufacturing cellulose
GB3977629A GB347297A (en) 1929-12-30 1929-12-30 Method of manufacturing cellulose
FR688311D FR688311A (en) 1929-12-30 1930-01-15 Process for the manufacture of cellulose
US464717A US1918250A (en) 1929-12-30 1930-06-28 Method of producing alpha cellulose

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3977629A GB347297A (en) 1929-12-30 1929-12-30 Method of manufacturing cellulose

Publications (1)

Publication Number Publication Date
GB347297A true GB347297A (en) 1931-04-30

Family

ID=10411428

Family Applications (2)

Application Number Title Priority Date Filing Date
GB1906328A Expired GB322763A (en) 1929-12-30 1928-06-30 Method of manufacturing cellulose
GB3977629A Expired GB347297A (en) 1920-05-26 1929-12-30 Method of manufacturing cellulose

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB1906328A Expired GB322763A (en) 1929-12-30 1928-06-30 Method of manufacturing cellulose

Country Status (2)

Country Link
FR (2) FR657770A (en)
GB (2) GB322763A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE967570C (en) * 1941-12-23 1957-11-21 Phrix Werke Akt Ges Process for the production of a pulp suitable for the production of viscose from annual plants rich in pentosan
WO2008138428A1 (en) * 2007-05-11 2008-11-20 Voith Patent Gmbh Method for shredding chemically treated raw material containing lignocellulose

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2528350A (en) * 1947-06-05 1950-10-31 Hardwood By Products Inc Two-step digestion of hardwoods
US2528351A (en) * 1950-08-17 1950-10-31 Hardwood By Products Inc Alkaline sulfite digestion of hardwood
US2992155A (en) * 1956-11-06 1961-07-11 Okuno Hiroshi Process for manufacturing rayon pulp of high purity from bagasse

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE967570C (en) * 1941-12-23 1957-11-21 Phrix Werke Akt Ges Process for the production of a pulp suitable for the production of viscose from annual plants rich in pentosan
WO2008138428A1 (en) * 2007-05-11 2008-11-20 Voith Patent Gmbh Method for shredding chemically treated raw material containing lignocellulose

Also Published As

Publication number Publication date
GB322763A (en) 1929-12-02
FR688311A (en) 1930-08-21
FR657770A (en) 1929-06-13

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