JPS53120698A - Purification method of caustic soda obtained from diaphragm method - Google Patents

Purification method of caustic soda obtained from diaphragm method

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Publication number
JPS53120698A
JPS53120698A JP3635377A JP3635377A JPS53120698A JP S53120698 A JPS53120698 A JP S53120698A JP 3635377 A JP3635377 A JP 3635377A JP 3635377 A JP3635377 A JP 3635377A JP S53120698 A JPS53120698 A JP S53120698A
Authority
JP
Japan
Prior art keywords
caustic soda
diaphragm
naoh
soda obtained
purification
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
JP3635377A
Other languages
Japanese (ja)
Inventor
Masaichi Miyashita
Shigenobu Kawamura
Etsuro Matsui
Masao Nakajima
Yoshitaka Yamaoka
Masayuki Koike
Noriaki Okamoto
Masahiro Oda
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
Tokuyama Corp
Original Assignee
IHI Corp
Tokuyama 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, Tokuyama Corp filed Critical IHI Corp
Priority to JP3635377A priority Critical patent/JPS53120698A/en
Publication of JPS53120698A publication Critical patent/JPS53120698A/en
Pending legal-status Critical Current

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Abstract

PURPOSE: To prepare NaOH,2H2O with a high purity in a high yield, by separating off roughly salt crystals from a conc. crude NaOH soln., separating off NaOH,2H2O crystals in a purifying process and circulating a mother liquor contg. fine salt crystals to a concentrating process.
COPYRIGHT: (C)1978,JPO&Japio
JP3635377A 1977-03-31 1977-03-31 Purification method of caustic soda obtained from diaphragm method Pending JPS53120698A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3635377A JPS53120698A (en) 1977-03-31 1977-03-31 Purification method of caustic soda obtained from diaphragm method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3635377A JPS53120698A (en) 1977-03-31 1977-03-31 Purification method of caustic soda obtained from diaphragm method

Publications (1)

Publication Number Publication Date
JPS53120698A true JPS53120698A (en) 1978-10-21

Family

ID=12467464

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3635377A Pending JPS53120698A (en) 1977-03-31 1977-03-31 Purification method of caustic soda obtained from diaphragm method

Country Status (1)

Country Link
JP (1) JPS53120698A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0864534A1 (en) * 1997-03-13 1998-09-16 Basf Aktiengesellschaft Process for the purification of sodium hydroxide solution

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0864534A1 (en) * 1997-03-13 1998-09-16 Basf Aktiengesellschaft Process for the purification of sodium hydroxide solution

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