SE7804239L - PREPARATION OF WHITE - Google Patents

PREPARATION OF WHITE

Info

Publication number
SE7804239L
SE7804239L SE7804239A SE7804239A SE7804239L SE 7804239 L SE7804239 L SE 7804239L SE 7804239 A SE7804239 A SE 7804239A SE 7804239 A SE7804239 A SE 7804239A SE 7804239 L SE7804239 L SE 7804239L
Authority
SE
Sweden
Prior art keywords
lime
preparation
white
liquor
carried out
Prior art date
Application number
SE7804239A
Other languages
Unknown language ( )
Swedish (sv)
Other versions
SE419997B (en
Original Assignee
Andersson Alf Ove
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 Andersson Alf Ove filed Critical Andersson Alf Ove
Priority to SE7804239A priority Critical patent/SE419997B/en
Priority to CA000325039A priority patent/CA1163777A/en
Priority to JP54500648A priority patent/JPH0123596B2/ja
Priority to FI791164A priority patent/FI64671B/en
Priority to PCT/SE1979/000085 priority patent/WO1979000931A1/en
Priority to BR7908084A priority patent/BR7908084A/en
Publication of SE7804239L publication Critical patent/SE7804239L/en
Publication of SE419997B publication Critical patent/SE419997B/en

Links

Classifications

    • 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
    • C01D1/20—Preparation by reacting oxides or hydroxides with alkali metal salts
    • C01D1/22—Preparation by reacting oxides or hydroxides with alkali metal salts with carbonates or bicarbonates
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
    • C01F11/00—Compounds of calcium, strontium, or barium
    • C01F11/18—Carbonates
    • C01F11/181—Preparation of calcium carbonate by carbonation of aqueous solutions and characterised by control of the carbonation conditions
    • 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
    • D21C11/0064—Aspects concerning the production and the treatment of green and white liquors, e.g. causticizing green liquor
    • 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
    • Y02P40/00—Technologies relating to the processing of minerals
    • Y02P40/40—Production or processing of lime, e.g. limestone regeneration of lime in pulp and sugar mills

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Paper (AREA)
  • Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)

Abstract

A process for the preparation of white liquor for the sulphate pulping process, wherein quicklime is slaked with green liquor (4) and the slaked lime formed is reacted with the sodium carbonate in the green liquor (4) to sodium hydroxide in a causticizing process, the lime sludge formed being separated. According to the invention, the process from the slaking of the lime up to the separation of the white liquor (7) and lime sludge is carried out at a pressure above the atmospheric pressure. In a preferred embodiment, the process is also carried out at a temperature above the normal boiling temperature of the system.
SE7804239A 1978-04-14 1978-04-14 SET TO PREPARE WHITE WHITE A PRESSURE AT THE ATMOSPHERE PRESSURE SE419997B (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
SE7804239A SE419997B (en) 1978-04-14 1978-04-14 SET TO PREPARE WHITE WHITE A PRESSURE AT THE ATMOSPHERE PRESSURE
CA000325039A CA1163777A (en) 1978-04-14 1979-04-06 Preparation of white liquor
JP54500648A JPH0123596B2 (en) 1978-04-14 1979-04-09
FI791164A FI64671B (en) 1978-04-14 1979-04-09 BEREDNING AV VITLUT
PCT/SE1979/000085 WO1979000931A1 (en) 1978-04-14 1979-04-09 Preparation of white liquor
BR7908084A BR7908084A (en) 1978-04-14 1979-04-09 PROCESS TO PREPARE WHITE LIQUOR

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE7804239A SE419997B (en) 1978-04-14 1978-04-14 SET TO PREPARE WHITE WHITE A PRESSURE AT THE ATMOSPHERE PRESSURE

Publications (2)

Publication Number Publication Date
SE7804239L true SE7804239L (en) 1979-10-15
SE419997B SE419997B (en) 1981-09-07

Family

ID=20334613

Family Applications (1)

Application Number Title Priority Date Filing Date
SE7804239A SE419997B (en) 1978-04-14 1978-04-14 SET TO PREPARE WHITE WHITE A PRESSURE AT THE ATMOSPHERE PRESSURE

Country Status (5)

Country Link
JP (1) JPH0123596B2 (en)
CA (1) CA1163777A (en)
FI (1) FI64671B (en)
SE (1) SE419997B (en)
WO (1) WO1979000931A1 (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI71786C (en) * 1983-02-23 1987-02-09 Enso Gutzeit Oy KAUSTICERINGSFOERFARANDE.
SE463771C (en) * 1985-05-02 1999-07-12 Caustec Ab Apparatus and method for separating white liquor, mesa and possibly sludge using a rotating disk filter
FI72156C (en) * 1985-03-19 1987-04-13 Enso Gutzeit Oy KAUSTICERINGSFOERFARANDE.
US5145556A (en) * 1991-07-31 1992-09-08 International Paper Company Single-stage slaking and causticizing method
CA2213750A1 (en) * 1995-02-27 1996-09-06 Aeci Limited Production of precipitated calcium carbonate
PL185259B1 (en) * 1995-03-02 2003-04-30 Gomersall John Edward Method of precipitating calcium carbonate
EP0953544B1 (en) 1996-12-09 2006-10-18 Nippon Paper Industries Co., Ltd. Processes for preparing calcium carbonate
JP3808263B2 (en) 2000-01-18 2006-08-09 日本製紙株式会社 Method for producing calcium carbonate

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DK2969C (en) * 1900-04-17 Richard Jaeger Procedure for Dry Leaching of Lime.
DE109555C (en) *

Also Published As

Publication number Publication date
FI791164A (en) 1979-10-15
JPS55500189A (en) 1980-04-03
FI64671B (en) 1983-08-31
JPH0123596B2 (en) 1989-05-08
CA1163777A (en) 1984-03-20
SE419997B (en) 1981-09-07
WO1979000931A1 (en) 1979-11-15

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