JPS57111235A - Concentration of caustic soda - Google Patents

Concentration of caustic soda

Info

Publication number
JPS57111235A
JPS57111235A JP18908280A JP18908280A JPS57111235A JP S57111235 A JPS57111235 A JP S57111235A JP 18908280 A JP18908280 A JP 18908280A JP 18908280 A JP18908280 A JP 18908280A JP S57111235 A JPS57111235 A JP S57111235A
Authority
JP
Japan
Prior art keywords
tank
steam
heat
effected
concentration
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.)
Pending
Application number
JP18908280A
Other languages
Japanese (ja)
Inventor
Tetsuhiko Seto
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.)
IHI Corp
Original Assignee
IHI Corp
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 IHI Corp filed Critical IHI Corp
Priority to JP18908280A priority Critical patent/JPS57111235A/en
Publication of JPS57111235A publication Critical patent/JPS57111235A/en
Pending legal-status Critical Current

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  • Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)

Abstract

PURPOSE: Heat exchange is effected between the final concentrate of caustic soda from the up-stage tank and the condensed water from the low-stage tank to recover the heat to be taken off by the final concentrate and to reuse it for heating the multiple effect evaporator.
CONSTITUTION: The concentrate of dilute aqueous sodium hydroxide 4 is fed from the third tank 3 and transferred through the second tank 2 to the first tank 1 in order, while concentration is being effected. In the meantime, steam 5 is fed to the first tank 1 as a heat source and the steam generated in the first tank 14 is used as a heat source for the second tank 2. Further, the steam generated in the second tank 2 17 is used in the third tank 3 as a heat source and the steam from the third tank 3 is led to condenser 6. Thus, the dilute aqueous sodium hydroxide solution is higher concentrated with steam as it goes from the third tank 3 to the first tank 1. Namely, the final concentrate 7 from the first tank 1 is connected to heat exchanger 8, while the condensed water from the tank 3 is connected to the heat exchanger 8 where heat exchange is effected.
COPYRIGHT: (C)1982,JPO&Japio
JP18908280A 1980-12-27 1980-12-27 Concentration of caustic soda Pending JPS57111235A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP18908280A JPS57111235A (en) 1980-12-27 1980-12-27 Concentration of caustic soda

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP18908280A JPS57111235A (en) 1980-12-27 1980-12-27 Concentration of caustic soda

Publications (1)

Publication Number Publication Date
JPS57111235A true JPS57111235A (en) 1982-07-10

Family

ID=16235004

Family Applications (1)

Application Number Title Priority Date Filing Date
JP18908280A Pending JPS57111235A (en) 1980-12-27 1980-12-27 Concentration of caustic soda

Country Status (1)

Country Link
JP (1) JPS57111235A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5534167A (en) * 1978-09-04 1980-03-10 Toagosei Chem Ind Co Ltd Utilization method of vapor produced from liquid flush tank of multiple effect concentrating-evaporating vessel

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5534167A (en) * 1978-09-04 1980-03-10 Toagosei Chem Ind Co Ltd Utilization method of vapor produced from liquid flush tank of multiple effect concentrating-evaporating vessel

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