CA2168578A1 - Procede de desencrage ameliore utilisant un agent agglomerant - Google Patents

Procede de desencrage ameliore utilisant un agent agglomerant

Info

Publication number
CA2168578A1
CA2168578A1 CA 2168578 CA2168578A CA2168578A1 CA 2168578 A1 CA2168578 A1 CA 2168578A1 CA 2168578 CA2168578 CA 2168578 CA 2168578 A CA2168578 A CA 2168578A CA 2168578 A1 CA2168578 A1 CA 2168578A1
Authority
CA
Canada
Prior art keywords
ink
pulp medium
medium
pulp
deinking
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.)
Abandoned
Application number
CA 2168578
Other languages
English (en)
Inventor
Narendra R. Srivatsa
Larry D. Markham
Richard R. Wesolowski
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.)
International Paper Co
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
Application filed by Individual filed Critical Individual
Publication of CA2168578A1 publication Critical patent/CA2168578A1/fr
Abandoned 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
    • 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
    • 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

Le désencrage du papier imprimé s'effectue par défibrage des vieux papiers imprimés (1) pour donner un milieu cellulosique et par mise en contact de ce milieu avec un milieu aqueux comprenant un produit chimique de désencrage (2), dans lequel la présence de ce produit chimique provoque l'agglomération des particules d'encre pour donner un milieu de cellulose et d'encre. Les particules d'encre agglomérées sont éliminées du milieu de cellulose et d'encre au moyen de procédés de séparation par taille (3) et densité (4) afin de donner un milieu cellulosique pratiquement dépourvu d'encre. La présente invention décrit des procédés perfectionnés de désencrage permettant une très bonne élimination de l'encre du papier imprimé par agglomération plus efficace des particules d'encre grâce à des actions séparées de défibrage et d'agglomération dont les exigences physico-chimiques sont différentes.
CA 2168578 1993-08-02 1994-08-02 Procede de desencrage ameliore utilisant un agent agglomerant Abandoned CA2168578A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US10088693A 1993-08-02 1993-08-02
US08/100,886 1993-08-02

Publications (1)

Publication Number Publication Date
CA2168578A1 true CA2168578A1 (fr) 1995-02-09

Family

ID=22282034

Family Applications (1)

Application Number Title Priority Date Filing Date
CA 2168578 Abandoned CA2168578A1 (fr) 1993-08-02 1994-08-02 Procede de desencrage ameliore utilisant un agent agglomerant

Country Status (4)

Country Link
EP (1) EP0712452A4 (fr)
AU (1) AU7479994A (fr)
CA (1) CA2168578A1 (fr)
WO (1) WO1995004187A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113060944A (zh) * 2021-03-25 2021-07-02 肥西常福中空玻璃厂 一种玻璃脱墨设备

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4561933A (en) * 1983-10-17 1985-12-31 Shell Oil Company Xerographics deinking
US4820379A (en) * 1986-10-16 1989-04-11 Ppg Industries, Inc. Method for deinking wastepaper with a halogenated polyethylene oxide and a polymeric material
US4895622A (en) * 1988-11-09 1990-01-23 Betz Laboratories, Inc. Press felt conditioner for neutral and alkaline papermaking systems
NZ242280A (en) * 1991-04-25 1994-02-25 Betz Int De-inking electrostatically printed paper using a surfactant in an aqueous
US5234543A (en) * 1991-10-03 1993-08-10 International Paper Company Deinking method using ink agglomeration

Also Published As

Publication number Publication date
WO1995004187A1 (fr) 1995-02-09
EP0712452A1 (fr) 1996-05-22
EP0712452A4 (fr) 1999-04-21
AU7479994A (en) 1995-02-28

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Legal Events

Date Code Title Description
FZDE Dead