FR2399503A1 - Nouveau procede de recuperation chimique de l'hydroxyde sodique et de recuperation thermique des lessives noires residuelles provenant de la fabrication de cellulose - Google Patents

Nouveau procede de recuperation chimique de l'hydroxyde sodique et de recuperation thermique des lessives noires residuelles provenant de la fabrication de cellulose

Info

Publication number
FR2399503A1
FR2399503A1 FR7732092A FR7732092A FR2399503A1 FR 2399503 A1 FR2399503 A1 FR 2399503A1 FR 7732092 A FR7732092 A FR 7732092A FR 7732092 A FR7732092 A FR 7732092A FR 2399503 A1 FR2399503 A1 FR 2399503A1
Authority
FR
France
Prior art keywords
treatment
lignin
straw
lyes
resulting
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.)
Withdrawn
Application number
FR7732092A
Other languages
English (en)
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.)
TORRAS HOSTENCH SA
Original Assignee
TORRAS HOSTENCH SA
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 TORRAS HOSTENCH SA filed Critical TORRAS HOSTENCH SA
Publication of FR2399503A1 publication Critical patent/FR2399503A1/fr
Withdrawn legal-status Critical Current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
    • D21C11/04—Regeneration of pulp liquors or effluent waste waters of alkali lye
    • 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

  • Silicon Compounds (AREA)
  • Crystals, And After-Treatments Of Crystals (AREA)
  • Paper (AREA)

Abstract

Le procédé selon l'invention se distingue en ce qu'il consiste à carbonater les lessives résiduelles provenant du traitement de bois, préalablement concentrées à 40 % de façon continue, dans une tour dans laquelle cette lessive est dispersée, et dans laquelle elle tombe à contre-courant par rapport à une circulation ascendante de dioxyde de carbone qui est impulsée par un ventilateur, et dans laquelle ont été prévus des moyens conventionnels capables de maintenir les conditions de réaction entre 70 et 85 sous une pression de 0,5 kg/cm**2.
FR7732092A 1977-08-04 1977-10-25 Nouveau procede de recuperation chimique de l'hydroxyde sodique et de recuperation thermique des lessives noires residuelles provenant de la fabrication de cellulose Withdrawn FR2399503A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ES461364A ES461364A1 (es) 1977-08-04 1977-08-04 Perfeccionamientos en procedimientos para recuperacion qui- mica de hidroxido sodico y recuperacion termica de las le- jias negras residuales de la fabricacion de celulosa.

Publications (1)

Publication Number Publication Date
FR2399503A1 true FR2399503A1 (fr) 1979-03-02

Family

ID=8474353

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7732092A Withdrawn FR2399503A1 (fr) 1977-08-04 1977-10-25 Nouveau procede de recuperation chimique de l'hydroxyde sodique et de recuperation thermique des lessives noires residuelles provenant de la fabrication de cellulose

Country Status (7)

Country Link
BE (1) BE861585A (fr)
BR (1) BR7800047A (fr)
DE (1) DE2746116A1 (fr)
ES (1) ES461364A1 (fr)
FR (1) FR2399503A1 (fr)
IT (1) IT1086915B (fr)
NL (1) NL7710932A (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1982002909A1 (fr) * 1981-02-27 1982-09-02 Quittkat Wolfram Procede pour purifier la lessive noire par elimination de l'acide silicique

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR401856A (fr) * 1908-04-14 1909-09-18 Erik Ludvig Rinman Procédé pour le traitement des liqueurs résiduaires provenant des moulins à pate à la soude
US1606338A (en) * 1921-05-19 1926-11-09 Bradley Mckeefe Corp Treatment of black liquor
DE522730C (de) * 1929-01-01 1931-04-14 Carl G Schwalbe Dr Verfahren zur Entkieselung alkalischer kieselsaeurehaltiger Zellstoffablaugen
US2464828A (en) * 1944-02-22 1949-03-22 West Virginia Pulp & Paper Co Method of producing lignin from black liquor
DE1119645B (de) * 1957-01-31 1961-12-14 Escher Wyss Gmbh Verfahren zur Entfernung von Kieselsaeure aus alkalischen Ablaugen der Zellstoffindustrie

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR401856A (fr) * 1908-04-14 1909-09-18 Erik Ludvig Rinman Procédé pour le traitement des liqueurs résiduaires provenant des moulins à pate à la soude
US1606338A (en) * 1921-05-19 1926-11-09 Bradley Mckeefe Corp Treatment of black liquor
DE522730C (de) * 1929-01-01 1931-04-14 Carl G Schwalbe Dr Verfahren zur Entkieselung alkalischer kieselsaeurehaltiger Zellstoffablaugen
US2464828A (en) * 1944-02-22 1949-03-22 West Virginia Pulp & Paper Co Method of producing lignin from black liquor
DE1119645B (de) * 1957-01-31 1961-12-14 Escher Wyss Gmbh Verfahren zur Entfernung von Kieselsaeure aus alkalischen Ablaugen der Zellstoffindustrie

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1982002909A1 (fr) * 1981-02-27 1982-09-02 Quittkat Wolfram Procede pour purifier la lessive noire par elimination de l'acide silicique
FR2500858A1 (fr) * 1981-02-27 1982-09-03 Babcock Krauss Maffei Ind Procede pour eliminer sous forme de boue la silice d'une lessive noire

Also Published As

Publication number Publication date
NL7710932A (nl) 1979-02-06
DE2746116A1 (de) 1979-02-08
ES461364A1 (es) 1978-05-01
BR7800047A (pt) 1979-05-08
IT1086915B (it) 1985-05-31
BE861585A (fr) 1978-03-31

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Legal Events

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