FI951566A - Process for the treatment of sodium carbonate - Google Patents

Process for the treatment of sodium carbonate Download PDF

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Publication number
FI951566A
FI951566A FI951566A FI951566A FI951566A FI 951566 A FI951566 A FI 951566A FI 951566 A FI951566 A FI 951566A FI 951566 A FI951566 A FI 951566A FI 951566 A FI951566 A FI 951566A
Authority
FI
Finland
Prior art keywords
sodium carbonate
wetting
green liquor
crystals
recycled
Prior art date
Application number
FI951566A
Other languages
Finnish (fi)
Swedish (sv)
Other versions
FI98226C (en
FI951566A0 (en
FI98226B (en
Inventor
Jouni Jaentti
Juhani Vehmaan-Kreula
Raili Puumalainen
Original Assignee
Ahlstroem Oy
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 Ahlstroem Oy filed Critical Ahlstroem Oy
Priority to FI951566A priority Critical patent/FI98226C/en
Publication of FI951566A0 publication Critical patent/FI951566A0/en
Publication of FI951566A publication Critical patent/FI951566A/en
Application granted granted Critical
Publication of FI98226B publication Critical patent/FI98226B/en
Publication of FI98226C publication Critical patent/FI98226C/en

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  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

The present invention deals with a method for separation of sodium carbonate from green liquor in connection with a chemical recovery process at the pulp factory. Sodium carbonate is crystallised out from the green liquor and the thus obtained sodium carbonate crystals are recycled and wetted in a filter. At least a portion of the liquid used for wetting of the sodium carbonate crystals is constituted of green liquor. During the separation and wetting, the filtrate is recycled as two fractions, the first of which, the undiluted fraction, is separated from the crystallisation process in its entirety or partially as a solution containing abundant sodium sulphide, and the second, the fraction containing the wetting liquid for the crystals, is taken on to the crystallisation process. <IMAGE>
FI951566A 1995-04-03 1995-04-03 Method for treating sodium carbonate FI98226C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FI951566A FI98226C (en) 1995-04-03 1995-04-03 Method for treating sodium carbonate

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI951566 1995-04-03
FI951566A FI98226C (en) 1995-04-03 1995-04-03 Method for treating sodium carbonate

Publications (4)

Publication Number Publication Date
FI951566A0 FI951566A0 (en) 1995-04-03
FI951566A true FI951566A (en) 1996-10-04
FI98226B FI98226B (en) 1997-01-31
FI98226C FI98226C (en) 1997-05-12

Family

ID=8543172

Family Applications (1)

Application Number Title Priority Date Filing Date
FI951566A FI98226C (en) 1995-04-03 1995-04-03 Method for treating sodium carbonate

Country Status (1)

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FI (1) FI98226C (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE9803384L (en) 1998-03-02 1999-09-03 Kemira Kemi Ab Process for treating process water

Also Published As

Publication number Publication date
FI98226C (en) 1997-05-12
FI951566A0 (en) 1995-04-03
FI98226B (en) 1997-01-31

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GB Transfer or assigment of application

Owner name: AHLSTROM MACHINERY OY

MA Patent expired