US2662012A - Preparation of straw cellulose - Google Patents

Preparation of straw cellulose Download PDF

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Publication number
US2662012A
US2662012A US151299A US15129950A US2662012A US 2662012 A US2662012 A US 2662012A US 151299 A US151299 A US 151299A US 15129950 A US15129950 A US 15129950A US 2662012 A US2662012 A US 2662012A
Authority
US
United States
Prior art keywords
straw
cellulose
sodium
sodium hydroxide
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 - Lifetime
Application number
US151299A
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English (en)
Inventor
Teunissen Pieter Hendrik
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.)
Akzona Inc
Original Assignee
American Enka Corp
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 American Enka Corp filed Critical American Enka Corp
Application granted granted Critical
Publication of US2662012A publication Critical patent/US2662012A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • D21C3/022—Pulping cellulose-containing materials with inorganic bases or alkaline reacting compounds, e.g. sulfate processes in presence of S-containing compounds

Definitions

  • fi he present invention relates to the treatment of straw and more particularly to a process for the 11reparation ;oi straw cellulose suitable for -manufacturinghigh gr ade paper.
  • lthe wood is digested in an aquleou s alkaline solution containing 20 sodium hydroxide and sodiumsulphide based on the 'weight of thedry wood the quantity of water usedjoeing dependent on the type of apparatus and process einployed generally this quantity of water varies between two and seven times t ee-we t f th 'w 'sl- J E e i 2 lulose isin the neighborhood of 50% of the dry wood; o e er, sarn'e process applied to straw w s bo t 50% 1 th r sa e the paper manufactured frorn this cellulose is of poor quality-in that it liasa l0w tensile strength
  • straw is introduced into an aqueous alkaline-solutionanddsdiested therein for --from;-2 to 3 hours, :preferably ior about 2 hoursand 15 minutes.
  • *Ihe-temperature of the solution is maintamed between ll5 -C.--and 130 (3., preferably atabout 120? G.
  • the total alkaline agents employed are not less than 7% and-not more than 9% "basedon the 'weight'of the dry straw and consist of about 80% sodium hydroxide and about 20% sodium sulphide. These percentage ranges can be satisfied if the sodium hydroxide: varies from 5.6% to 7.2% While thesodium sulphide varies from 124% to 1.8%.
  • An'ra t e opti rmrementaa 9 t kaline agents based on the Weight of the art straw are 6.4% sodium hydroxide and 116% so'dium sulphide.
  • the straw was digested in an aqueous alkaline solution maintained at different temperatures.
  • the straw-liquid ratio was 1:2, and the alkaline solution contained 6.4% sodium hydroxide and 1.6% sodium sulphide, based on the weight of the dry straw.
  • the air-dry straw contained moisture and the digesting operation was conducted for two and one-quarter hours. Table I given below confirms the fact that the highest yield of cellulose and the lowest consumption of chlorine was obtained at 120 C..
  • the breaking length in km. refers to the length of paper that breaks under its own weight when freely suspended from a support.
  • a process for the preparation of straw cellulose suitable for manufacturing paper which comprises digesting the straw for a period of time not more than about 3 hours and not less than about 2 hours in an aqueous solution consisting essentially of sodium hydroxide and sodium sulphide maintained in a temperature range between C. and 130 C. and having a total content of alkaline agents from 7% to 9% based on the weight of the dry straw, said alkaline agents consisting of about 80% sodium hydroxide and about 20% sodium sulphide, the
  • a process for the preparation of straw cellu lose suitable for manufacturing paper which comprises digesting the straw for a period of time not more than about 3 hours and not less than about 2 hours in an aqueous alkaline solution maintained at a temperature of about C. and consisting of about 6.4% sodium hydroxide and about 1.6% sodium sulphide, each based on the weight of the dry straw, the straw-liquid ratio being about 1:2.

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  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Paper (AREA)
US151299A 1949-07-29 1950-03-22 Preparation of straw cellulose Expired - Lifetime US2662012A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL2662012X 1949-07-29

Publications (1)

Publication Number Publication Date
US2662012A true US2662012A (en) 1953-12-08

Family

ID=19875247

Family Applications (1)

Application Number Title Priority Date Filing Date
US151299A Expired - Lifetime US2662012A (en) 1949-07-29 1950-03-22 Preparation of straw cellulose

Country Status (3)

Country Link
US (1) US2662012A (en(2012))
FR (1) FR1021964A (en(2012))
NL (1) NL147891C (en(2012))

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2854334A (en) * 1954-11-08 1958-09-30 Hawaiian Dev Company Ltd Rapid kraft pulping process for bagasse and other fibrous, non-woody lignocellulosic plant materials
US20110061825A1 (en) * 2007-12-05 2011-03-17 Shandong Fuyin Paper & Environmental Protection Technology Co., Ltd. Grass type unbleached paper products and production method thereof
US20110297343A1 (en) * 2008-12-09 2011-12-08 Shandong Fuyin Paper & Enviromental Protection Technology Co., Ltd. Raw paper and production method and application thereof
US20120006501A1 (en) * 2010-06-25 2012-01-12 Jeff Golfman Method for Preparing Nonwood Fiber Paper

Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE313344C (en(2012)) * 1917-10-20
US296935A (en) * 1884-04-15 Gael febdinand dahl
AT40620B (de) * 1907-08-13 1910-01-25 Erik Wilhelm Tillberg Verfahren zur Herstellung von Zellulose aus Rinde.
US1626171A (en) * 1926-06-29 1927-04-26 Sidney D Wells Process for cooking vegetable fiber
US1634603A (en) * 1926-01-12 1927-07-05 Grasselli Chemical Co Process of making paper from straw and product
US1692774A (en) * 1925-06-18 1928-11-20 Ball Brothers Co Paper and paper stock and method of producing the same
US1816456A (en) * 1930-04-07 1931-07-28 Zimmerman Max Method of making straw pulp for straw board
US1920239A (en) * 1931-05-14 1933-08-01 Estape Process of preparing cellulose
US2049567A (en) * 1934-06-05 1936-08-04 Du Pont Manufacture of paper pulp
US2099400A (en) * 1936-10-19 1937-11-16 Champagne Paper Corp Preparation of paper pulp
US2161763A (en) * 1937-10-06 1939-06-06 Champagne Paper Corp Process of making paper pulp
US2482142A (en) * 1943-10-02 1949-09-20 Gardner H Chidester Structural material of compressed resin impregnated paper sheets

Patent Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US296935A (en) * 1884-04-15 Gael febdinand dahl
AT40620B (de) * 1907-08-13 1910-01-25 Erik Wilhelm Tillberg Verfahren zur Herstellung von Zellulose aus Rinde.
DE313344C (en(2012)) * 1917-10-20
US1692774A (en) * 1925-06-18 1928-11-20 Ball Brothers Co Paper and paper stock and method of producing the same
US1634603A (en) * 1926-01-12 1927-07-05 Grasselli Chemical Co Process of making paper from straw and product
US1626171A (en) * 1926-06-29 1927-04-26 Sidney D Wells Process for cooking vegetable fiber
US1816456A (en) * 1930-04-07 1931-07-28 Zimmerman Max Method of making straw pulp for straw board
US1920239A (en) * 1931-05-14 1933-08-01 Estape Process of preparing cellulose
US2049567A (en) * 1934-06-05 1936-08-04 Du Pont Manufacture of paper pulp
US2099400A (en) * 1936-10-19 1937-11-16 Champagne Paper Corp Preparation of paper pulp
US2161763A (en) * 1937-10-06 1939-06-06 Champagne Paper Corp Process of making paper pulp
US2482142A (en) * 1943-10-02 1949-09-20 Gardner H Chidester Structural material of compressed resin impregnated paper sheets

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2854334A (en) * 1954-11-08 1958-09-30 Hawaiian Dev Company Ltd Rapid kraft pulping process for bagasse and other fibrous, non-woody lignocellulosic plant materials
US20110061825A1 (en) * 2007-12-05 2011-03-17 Shandong Fuyin Paper & Environmental Protection Technology Co., Ltd. Grass type unbleached paper products and production method thereof
US8303772B2 (en) * 2007-12-05 2012-11-06 Shangdong Fuyin Paper & Environmental Protection Technology Co., Ltd. Method for preparing a grass-type unbleached paper product
US20110297343A1 (en) * 2008-12-09 2011-12-08 Shandong Fuyin Paper & Enviromental Protection Technology Co., Ltd. Raw paper and production method and application thereof
US8771465B2 (en) * 2008-12-09 2014-07-08 Shandong Fuyin Paper & Environmental Protection Technology Co., Ltd Raw Paper
US20120006501A1 (en) * 2010-06-25 2012-01-12 Jeff Golfman Method for Preparing Nonwood Fiber Paper
US8795469B2 (en) * 2010-06-25 2014-08-05 Prairie Paper Ventures Inc. Method for preparing nonwood fiber paper

Also Published As

Publication number Publication date
NL147891C (en(2012))
FR1021964A (fr) 1953-02-26

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