FR2054706A5 - Recovery of water/chlorine from black liquer - pulping/bleaching - Google Patents

Recovery of water/chlorine from black liquer - pulping/bleaching

Info

Publication number
FR2054706A5
FR2054706A5 FR6925175A FR6925175A FR2054706A5 FR 2054706 A5 FR2054706 A5 FR 2054706A5 FR 6925175 A FR6925175 A FR 6925175A FR 6925175 A FR6925175 A FR 6925175A FR 2054706 A5 FR2054706 A5 FR 2054706A5
Authority
FR
France
Prior art keywords
recovery
water
pulping
black
bleaching
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
FR6925175A
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.)
BOURIT JEAN
Original Assignee
BOURIT JEAN
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 BOURIT JEAN filed Critical BOURIT JEAN
Priority to FR6925175A priority Critical patent/FR2054706A5/en
Application granted granted Critical
Publication of FR2054706A5 publication Critical patent/FR2054706A5/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
    • D21C11/00—Regeneration of pulp liquors or effluent waste waters
    • D21C11/12—Combustion of pulp liquors
    • D21C11/122—Treatment, e.g. dissolution, of the smelt
    • 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
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working

Landscapes

  • Paper (AREA)

Abstract

Black liquor from a conventional cellulose pulping and bleaching process is treated in a boiler to remove organics and produce a molten alt/ash. The melt is then contacted at high temp. with a reducing gas in which the vapour pressure of NaCl is less. The nonvolatilised, dechlorinated salt is sepd. from the gas, dissolved and caustified prior to recycling in the system. The chlorinated gas is heat-exchanged and recovered. The regeneration system permits efficient use of water and yields an 80% Cl2 recovery from the black liquor.
FR6925175A 1969-07-23 1969-07-23 Recovery of water/chlorine from black liquer - pulping/bleaching Expired FR2054706A5 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR6925175A FR2054706A5 (en) 1969-07-23 1969-07-23 Recovery of water/chlorine from black liquer - pulping/bleaching

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR6925175A FR2054706A5 (en) 1969-07-23 1969-07-23 Recovery of water/chlorine from black liquer - pulping/bleaching

Publications (1)

Publication Number Publication Date
FR2054706A5 true FR2054706A5 (en) 1971-05-07

Family

ID=9037925

Family Applications (1)

Application Number Title Priority Date Filing Date
FR6925175A Expired FR2054706A5 (en) 1969-07-23 1969-07-23 Recovery of water/chlorine from black liquer - pulping/bleaching

Country Status (1)

Country Link
FR (1) FR2054706A5 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2681882A1 (en) * 1991-09-27 1993-04-02 Ahlstroem Oy Process and device for treating molten residues originating from the treatment of cellulose pulp

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2681882A1 (en) * 1991-09-27 1993-04-02 Ahlstroem Oy Process and device for treating molten residues originating from the treatment of cellulose pulp

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Legal Events

Date Code Title Description
ST Notification of lapse