FR2158798A5 - Recovering paper pulp - from old papers, card, etc by boiling with alkali - Google Patents

Recovering paper pulp - from old papers, card, etc by boiling with alkali

Info

Publication number
FR2158798A5
FR2158798A5 FR7229563A FR7229563A FR2158798A5 FR 2158798 A5 FR2158798 A5 FR 2158798A5 FR 7229563 A FR7229563 A FR 7229563A FR 7229563 A FR7229563 A FR 7229563A FR 2158798 A5 FR2158798 A5 FR 2158798A5
Authority
FR
France
Prior art keywords
pbw
alkali
boiling
card
paper pulp
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
FR7229563A
Other languages
French (fr)
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.)
World-Wide Paper Reclamation
Original Assignee
World-Wide Paper Reclamation
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 World-Wide Paper Reclamation filed Critical World-Wide Paper Reclamation
Priority to FR7229563A priority Critical patent/FR2158798A5/en
Priority to DE2240726A priority patent/DE2240726A1/en
Priority to US36411073 priority patent/US3865684A/en
Priority claimed from US36411073 external-priority patent/US3865684A/en
Application granted granted Critical
Publication of FR2158798A5 publication Critical patent/FR2158798A5/en
Expired 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
    • D21B1/04—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres
    • D21B1/12—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres by wet methods, by the use of steam
    • D21B1/30—Defibrating by other means
    • D21B1/32—Defibrating by other means of waste paper
    • 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
    • D21C5/00—Other processes for obtaining cellulose, e.g. cooking cotton linters ; Processes characterised by the choice of cellulose-containing starting materials
    • D21C5/02—Working-up waste paper
    • 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
    • D21C5/00—Other processes for obtaining cellulose, e.g. cooking cotton linters ; Processes characterised by the choice of cellulose-containing starting materials
    • D21C5/02—Working-up waste paper
    • D21C5/025—De-inking
    • D21C5/027—Chemicals therefor
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies
    • Y02W30/64—Paper recycling

Abstract

Old papers, cardboard glossy magazines are reduced to fine dimensions, boiled in a soln. comprising 100-200 pbw of an alkali hydroxide, 150-250 pbw of an alkali metal or ammonium carbonate and 10-30 pbw of a mixt. of 48 pbw to 20% of bicarbonate and 56 pbw to 20% of borate of an alkali metal, separating the paper from soln. washing pulping and bleaching.
FR7229563A 1971-08-17 1972-08-18 Recovering paper pulp - from old papers, card, etc by boiling with alkali Expired FR2158798A5 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
FR7229563A FR2158798A5 (en) 1971-08-17 1972-08-18 Recovering paper pulp - from old papers, card, etc by boiling with alkali
DE2240726A DE2240726A1 (en) 1971-08-17 1972-08-18 PROCESS AND MIXTURE FOR THE PRODUCTION OF FIBER PULP FROM REGENERATED WASTE PAPER
US36411073 US3865684A (en) 1971-08-17 1973-05-25 Composition for reclaiming pulp from waste papers

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US17260071A 1971-08-17 1971-08-17
FR7229563A FR2158798A5 (en) 1971-08-17 1972-08-18 Recovering paper pulp - from old papers, card, etc by boiling with alkali
DE2240726A DE2240726A1 (en) 1971-08-17 1972-08-18 PROCESS AND MIXTURE FOR THE PRODUCTION OF FIBER PULP FROM REGENERATED WASTE PAPER
US36411073 US3865684A (en) 1971-08-17 1973-05-25 Composition for reclaiming pulp from waste papers

Publications (1)

Publication Number Publication Date
FR2158798A5 true FR2158798A5 (en) 1973-06-15

Family

ID=32966537

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7229563A Expired FR2158798A5 (en) 1971-08-17 1972-08-18 Recovering paper pulp - from old papers, card, etc by boiling with alkali

Country Status (2)

Country Link
DE (1) DE2240726A1 (en)
FR (1) FR2158798A5 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2567930A1 (en) * 1984-07-17 1986-01-24 Centre Tech Ind Papier METHOD AND INSTALLATION FOR RECYCLING OLD PRINTED PAPERS

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19742729A1 (en) 1997-09-26 1999-04-01 Sca Hygiene Prod Gmbh Process for processing waste paper while avoiding biocides and chlorine compounds, as well as hydrogen peroxide and peracetic acid, device for carrying out this process and recycling tissue papers with a total bacterial count of less than 1000 CFU / g and a surface bacterial count of less than 20 CFU / dm

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2567930A1 (en) * 1984-07-17 1986-01-24 Centre Tech Ind Papier METHOD AND INSTALLATION FOR RECYCLING OLD PRINTED PAPERS
EP0172118A1 (en) * 1984-07-17 1986-02-19 Centre Technique De L'industrie Des Papiers, Cartons Et Celluloses Process and apparatus for recycling printed waste paper

Also Published As

Publication number Publication date
DE2240726A1 (en) 1974-02-28

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Legal Events

Date Code Title Description
ST Notification of lapse