FR2396119A1 - Paper pulp prodn. using peroxide delignification - with mechanical pretreatment to improve water absorption of wood pieces - Google Patents

Paper pulp prodn. using peroxide delignification - with mechanical pretreatment to improve water absorption of wood pieces

Info

Publication number
FR2396119A1
FR2396119A1 FR7721024A FR7721024A FR2396119A1 FR 2396119 A1 FR2396119 A1 FR 2396119A1 FR 7721024 A FR7721024 A FR 7721024A FR 7721024 A FR7721024 A FR 7721024A FR 2396119 A1 FR2396119 A1 FR 2396119A1
Authority
FR
France
Prior art keywords
water absorption
mechanical pretreatment
paper pulp
improve water
wood pieces
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.)
Granted
Application number
FR7721024A
Other languages
French (fr)
Other versions
FR2396119B1 (en
Inventor
Christian De Choudens
Claude Bourne
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.)
CENTRE TECH IND PAPIER
Original Assignee
CENTRE TECH IND PAPIER
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 CENTRE TECH IND PAPIER filed Critical CENTRE TECH IND PAPIER
Priority to FR7721024A priority Critical patent/FR2396119A1/en
Publication of FR2396119A1 publication Critical patent/FR2396119A1/en
Application granted granted Critical
Publication of FR2396119B1 publication Critical patent/FR2396119B1/fr
Granted legal-status Critical Current

Links

Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21B—FIBROUS RAW MATERIALS OR THEIR MECHANICAL TREATMENT
    • D21B1/00—Fibrous raw materials or their mechanical treatment
    • D21B1/02—Pretreatment of the raw materials by chemical or physical means

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Paper (AREA)

Abstract

The process for prepn. of paper-making pulp or analogous mechanical/chemical processes by delignification of lignocellulosic materials by means of hydrogen peroxide or a sodium peroxide in alkaline medium comprises treating the fragments of lignocellulosic material before cooking to a mechanical pretreatment having a combined compressing and shearing effect to loosen the bonds between the fibres but leaving the fragments substantially in their organised structure. The process enables a uniform quality pulp by assisting penetration of the agent into the fibre. The cooking time is satisfactory and the yield is equal to normal pulp processes without any damage to the fibres.
FR7721024A 1977-07-01 1977-07-01 Paper pulp prodn. using peroxide delignification - with mechanical pretreatment to improve water absorption of wood pieces Granted FR2396119A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7721024A FR2396119A1 (en) 1977-07-01 1977-07-01 Paper pulp prodn. using peroxide delignification - with mechanical pretreatment to improve water absorption of wood pieces

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7721024A FR2396119A1 (en) 1977-07-01 1977-07-01 Paper pulp prodn. using peroxide delignification - with mechanical pretreatment to improve water absorption of wood pieces

Publications (2)

Publication Number Publication Date
FR2396119A1 true FR2396119A1 (en) 1979-01-26
FR2396119B1 FR2396119B1 (en) 1980-01-18

Family

ID=9193122

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7721024A Granted FR2396119A1 (en) 1977-07-01 1977-07-01 Paper pulp prodn. using peroxide delignification - with mechanical pretreatment to improve water absorption of wood pieces

Country Status (1)

Country Link
FR (1) FR2396119A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2426769A2 (en) * 1978-05-25 1979-12-21 Centre Tech Ind Papier Paper pulp mfr. by mechanical-chemical treatment of cellulose - with intermediate treatment by oxidising agent e.g. sodium hypochlorite
FR2610648A1 (en) * 1987-02-06 1988-08-12 Centre Tech Ind Papier Process for treating chips before washing

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2426769A2 (en) * 1978-05-25 1979-12-21 Centre Tech Ind Papier Paper pulp mfr. by mechanical-chemical treatment of cellulose - with intermediate treatment by oxidising agent e.g. sodium hypochlorite
FR2610648A1 (en) * 1987-02-06 1988-08-12 Centre Tech Ind Papier Process for treating chips before washing

Also Published As

Publication number Publication date
FR2396119B1 (en) 1980-01-18

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