FR2405217A1 - Procede pour la recuperation d'un alcali caustique dans une liqueur caustique epuisee - Google Patents

Procede pour la recuperation d'un alcali caustique dans une liqueur caustique epuisee

Info

Publication number
FR2405217A1
FR2405217A1 FR7807671A FR7807671A FR2405217A1 FR 2405217 A1 FR2405217 A1 FR 2405217A1 FR 7807671 A FR7807671 A FR 7807671A FR 7807671 A FR7807671 A FR 7807671A FR 2405217 A1 FR2405217 A1 FR 2405217A1
Authority
FR
France
Prior art keywords
alkali
caustic
recovery
liquor
depleted
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
FR7807671A
Other languages
English (en)
Other versions
FR2405217B1 (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.)
Tsukishima Kankyo Engineering Ltd
Nippon Steel Eco Tech Corp
Original Assignee
Nittetsu Chemical Engineering Co Ltd
Nittetsu Kakoki KK
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 Nittetsu Chemical Engineering Co Ltd, Nittetsu Kakoki KK filed Critical Nittetsu Chemical Engineering Co Ltd
Publication of FR2405217A1 publication Critical patent/FR2405217A1/fr
Application granted granted Critical
Publication of FR2405217B1 publication Critical patent/FR2405217B1/fr
Granted 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
    • D21C11/0085—Introduction of auxiliary substances into the regenerating system in order to improve the performance of certain steps of the latter, the presence of these substances being confined to the regeneration cycle
    • D21C11/0092—Substances modifying the evaporation, combustion, or thermal decomposition processes of black liquor
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01D—COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM, RUBIDIUM, CAESIUM, OR FRANCIUM
    • C01D1/00—Oxides or hydroxides of sodium, potassium or alkali metals in general
    • C01D1/04—Hydroxides
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01D—COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM, RUBIDIUM, CAESIUM, OR FRANCIUM
    • C01D1/00—Oxides or hydroxides of sodium, potassium or alkali metals in general
    • C01D1/04—Hydroxides
    • C01D1/28—Purification; Separation

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Compounds Of Iron (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Paper (AREA)

Abstract

L'invention concerne des perfectionnements à un procédé de récupération d'alcali caustique à partir d'une liqueur alcaline épuisée ou usée. On effectue la calcination de la liqueur alcaline épuisée avec de l'oxyde de fer pour obtenir un produit contenant un ferrate alcalin et on hydrolyse le produit de la calcination à une température supérieure à 110 degrés C et sous pression pour maintenir la phase liquide, et l'on recueille l'alcali caustique sous la forme d'une solution aqueuse de concentration supérieure à 15 % en poids approximativement. Les procédés selon l'invention, pour la récupération d'alcali, conduisent à un rendement d'hydrolyse supérieur avec une concentration en fer dissous extrêmement faible.
FR7807671A 1977-10-05 1978-03-16 Procede pour la recuperation d'un alcali caustique dans une liqueur caustique epuisee Granted FR2405217A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11901577A JPS5452697A (en) 1977-10-05 1977-10-05 Method of hydrogenating ferric acid alkali

Publications (2)

Publication Number Publication Date
FR2405217A1 true FR2405217A1 (fr) 1979-05-04
FR2405217B1 FR2405217B1 (fr) 1983-10-14

Family

ID=14750867

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7807671A Granted FR2405217A1 (fr) 1977-10-05 1978-03-16 Procede pour la recuperation d'un alcali caustique dans une liqueur caustique epuisee

Country Status (7)

Country Link
US (1) US4169131A (fr)
JP (1) JPS5452697A (fr)
DE (1) DE2810878A1 (fr)
FR (1) FR2405217A1 (fr)
GB (1) GB1599074A (fr)
IT (1) IT1095474B (fr)
NL (1) NL187062C (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0090568A1 (fr) * 1982-03-25 1983-10-05 Australian Paper Manufacturers Limited Procédé de régénération d'alcalis caustiques

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59136924A (ja) * 1983-01-25 1984-08-06 株式会社村田製作所 電子部品の樹脂封止方法
JPS59227719A (ja) * 1983-06-07 1984-12-21 Babcock Hitachi Kk 苛性ソ−ダの回収方法
CN103408039B (zh) * 2013-08-28 2014-12-10 郑州中南杰特超硬材料有限公司 立方氮化硼合成尾料中碱回收工艺与回收设备

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2474916A (en) * 1947-10-28 1949-07-05 Metal & Thermit Corp Production of caustic soda

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1757592A (en) * 1925-11-06 1930-05-06 Henry M Schleicher Autoclave and method of operating same
DE586972C (de) * 1930-11-04 1933-10-28 Paul Krassa Dr Herstellung von AEtznatron
DE707152C (de) * 1939-08-22 1941-06-14 Rudolf Koepp & Co Chem Fab A G Verfahren zur Herstellung von Alkalihydroxyd ueber Alkaliferrit

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2474916A (en) * 1947-10-28 1949-07-05 Metal & Thermit Corp Production of caustic soda

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0090568A1 (fr) * 1982-03-25 1983-10-05 Australian Paper Manufacturers Limited Procédé de régénération d'alcalis caustiques

Also Published As

Publication number Publication date
NL7802807A (nl) 1979-04-09
US4169131A (en) 1979-09-25
GB1599074A (en) 1981-09-30
NL187062B (nl) 1990-12-17
FR2405217B1 (fr) 1983-10-14
IT1095474B (it) 1985-08-10
DE2810878A1 (de) 1979-04-26
IT7821315A0 (it) 1978-03-17
NL187062C (nl) 1991-05-16
JPS5452697A (en) 1979-04-25
JPS572647B2 (fr) 1982-01-18
DE2810878C2 (fr) 1988-06-23

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Legal Events

Date Code Title Description
ST Notification of lapse