JPS5747703A - Recovering method for sodium salt in green liquor - Google Patents

Recovering method for sodium salt in green liquor

Info

Publication number
JPS5747703A
JPS5747703A JP55120637A JP12063780A JPS5747703A JP S5747703 A JPS5747703 A JP S5747703A JP 55120637 A JP55120637 A JP 55120637A JP 12063780 A JP12063780 A JP 12063780A JP S5747703 A JPS5747703 A JP S5747703A
Authority
JP
Japan
Prior art keywords
green liquor
contg
nahco
nahs
gas
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
JP55120637A
Other languages
Japanese (ja)
Other versions
JPS6339525B2 (en
Inventor
Toshikatsu Mori
Teruo Kumagai
Shinpei Matsuda
Fumito Nakajima
Shigenobu Hisatomi
Nobuyuki Hosomi
Koichi Nishimura
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.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP55120637A priority Critical patent/JPS5747703A/en
Publication of JPS5747703A publication Critical patent/JPS5747703A/en
Publication of JPS6339525B2 publication Critical patent/JPS6339525B2/ja
Granted legal-status Critical Current

Links

Classifications

    • Y02P20/121—

Landscapes

  • Paper (AREA)

Abstract

PURPOSE: To efficiently recover the titled Na salt while saving energy consumption by carbonating green liquor produced in a pulp mill and introducing a gas contg. CO2 into the resulting liq. contg. NaHCO3 and NaHS under specified conditions.
CONSTITUTION: Green liquor produced in a pulp mill is precarbonated with a gas contg. CO2 at a low concn. such as combustion waste gas to produce NaHS and Na2CO3. By further feeding the gas contg. CO2, the Na2CO3 is converted into NaHCO3. The gas contg. CO2 is then introduced at ≥100°C under ordinary pressure or above to decompose the NaHCO3 and the NaHS into Na2CO3 and H2S. Thus, Na salt in green liquor is recovered as Na2CO3 and reutilized in the manufacture of semichemical pulp.
COPYRIGHT: (C)1982,JPO&Japio
JP55120637A 1980-09-02 1980-09-02 Recovering method for sodium salt in green liquor Granted JPS5747703A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55120637A JPS5747703A (en) 1980-09-02 1980-09-02 Recovering method for sodium salt in green liquor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55120637A JPS5747703A (en) 1980-09-02 1980-09-02 Recovering method for sodium salt in green liquor

Publications (2)

Publication Number Publication Date
JPS5747703A true JPS5747703A (en) 1982-03-18
JPS6339525B2 JPS6339525B2 (en) 1988-08-05

Family

ID=14791143

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55120637A Granted JPS5747703A (en) 1980-09-02 1980-09-02 Recovering method for sodium salt in green liquor

Country Status (1)

Country Link
JP (1) JPS5747703A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61252387A (en) * 1985-04-29 1986-11-10 オサケ　イフテイオ　タンペラ　ア−ベ− Method for digesting and bleaching pulp

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61252387A (en) * 1985-04-29 1986-11-10 オサケ　イフテイオ　タンペラ　ア−ベ− Method for digesting and bleaching pulp
JPH0229792B2 (en) * 1985-04-29 1990-07-02 Tampella Oy Ab

Also Published As

Publication number Publication date
JPS6339525B2 (en) 1988-08-05

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