JPS5456246A - Method of treating thiosulfate-contained liquid - Google Patents

Method of treating thiosulfate-contained liquid

Info

Publication number
JPS5456246A
JPS5456246A JP12274677A JP12274677A JPS5456246A JP S5456246 A JPS5456246 A JP S5456246A JP 12274677 A JP12274677 A JP 12274677A JP 12274677 A JP12274677 A JP 12274677A JP S5456246 A JPS5456246 A JP S5456246A
Authority
JP
Japan
Prior art keywords
thiosulfate
sulfuric acid
liquid
converted
decomposition
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
JP12274677A
Other languages
Japanese (ja)
Inventor
Isao Furuta
Yutaka Tamura
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.)
Kobe Steel Ltd
Original Assignee
Kobe Steel 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 Kobe Steel Ltd filed Critical Kobe Steel Ltd
Priority to JP12274677A priority Critical patent/JPS5456246A/en
Publication of JPS5456246A publication Critical patent/JPS5456246A/en
Pending legal-status Critical Current

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  • Removal Of Specific Substances (AREA)

Abstract

PURPOSE: To accomplish efficent decomposition to separate thiosulfate contained in the liquid by limiting the temperature and pH of the liquid in an acid decomposition of a thiosulfate-contained liquid while SO2 generated is converted into sulfuric acid to be recycled for the acid decomposition.
CONSTITUTION: A thiosulfate-contained liquid withdrawn from an absorption column 1 is fed to an acid decomposition tank 5 from a line 21 where the thiosulfate is decomposed by sulfuric acid circulated from a line 22 with the liquid controlled to 40 to 90°C in temperatur and 0.5 to 3 in pH. SO2 herein generated is put together with air and subjected to dehumidification in a drying column 4 to remove mist. Then, it fed to a converter 3 where SO2 is converted to SO3 by a oxidizing catalyst. SO3 thus obtained is fed to a SO3 absorption column 2 where it is absorbed by sulfuric acid circulated through a cooling device 10 to be converted to sulfuric acid. The sulfuric acid is recycled through the line 22. With such an arrangement, SO2, a polutant, can be converted to sulfuric acid necessary for the acid decomposition without leaving the system. In this manner, the thiosulfate can be decomposed away effectively
COPYRIGHT: (C)1979,JPO&Japio
JP12274677A 1977-10-12 1977-10-12 Method of treating thiosulfate-contained liquid Pending JPS5456246A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12274677A JPS5456246A (en) 1977-10-12 1977-10-12 Method of treating thiosulfate-contained liquid

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12274677A JPS5456246A (en) 1977-10-12 1977-10-12 Method of treating thiosulfate-contained liquid

Publications (1)

Publication Number Publication Date
JPS5456246A true JPS5456246A (en) 1979-05-07

Family

ID=14843570

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12274677A Pending JPS5456246A (en) 1977-10-12 1977-10-12 Method of treating thiosulfate-contained liquid

Country Status (1)

Country Link
JP (1) JPS5456246A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2017528317A (en) * 2014-09-17 2017-09-28 セペペウ カーボン プロセス アンド プラント エンジニアリング エス アーＣｐｐｅ Ｃａｒｂｏｎ Ｐｒｏｃｅｓｓ ＆ Ｐｌａｎｔ Ｅｎｇｉｎｅｅｒｉｎｇ Ｓ．Ａ． Catalyst removal method for sulfur dioxide from exhaust gas

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2017528317A (en) * 2014-09-17 2017-09-28 セペペウ カーボン プロセス アンド プラント エンジニアリング エス アーＣｐｐｅ Ｃａｒｂｏｎ Ｐｒｏｃｅｓｓ ＆ Ｐｌａｎｔ Ｅｎｇｉｎｅｅｒｉｎｇ Ｓ．Ａ． Catalyst removal method for sulfur dioxide from exhaust gas

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