JPS574237A - Regeneration method of ion exchange resin - Google Patents

Regeneration method of ion exchange resin

Info

Publication number
JPS574237A
JPS574237A JP7715480A JP7715480A JPS574237A JP S574237 A JPS574237 A JP S574237A JP 7715480 A JP7715480 A JP 7715480A JP 7715480 A JP7715480 A JP 7715480A JP S574237 A JPS574237 A JP S574237A
Authority
JP
Japan
Prior art keywords
exchange resin
resin
ion exchange
process liquid
weakly acidic
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
JP7715480A
Other languages
Japanese (ja)
Other versions
JPS6251145B2 (en
Inventor
Jun Saito
Hiroshi Ono
Shiro Koizumi
Takatoshi Mitsuishi
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.)
Mitsui Toatsu Chemicals Inc
Original Assignee
Mitsui Toatsu Chemicals Inc
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 Mitsui Toatsu Chemicals Inc filed Critical Mitsui Toatsu Chemicals Inc
Priority to JP7715480A priority Critical patent/JPS574237A/en
Publication of JPS574237A publication Critical patent/JPS574237A/en
Publication of JPS6251145B2 publication Critical patent/JPS6251145B2/ja
Granted legal-status Critical Current

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

Abstract

PURPOSE: To perform regeneration simply and enable repeated use by regenerating weakly acidic cation exchange resin used to separate guanidine carbonate from a process liquid of urea manufacture with caustic alkali under heating.
CONSTITUTION: In urea synthesis in which ammonia is made to react with carbon dioxide under high temperature and pressure, guanidine carbonate is separated and recovered from the process liquid using weakly acidic cation exchange resin. At this time, the resin lowered in capacity is treated with strong mineral acid or aqueous solution of caustic alkali such as ammonium carbonate heating at above 40°C. By this way, the ion exchange capacity of the resin can be restored remarkably, and this regeneration can be used repeatedly.
COPYRIGHT: (C)1982,JPO&Japio
JP7715480A 1980-06-10 1980-06-10 Regeneration method of ion exchange resin Granted JPS574237A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7715480A JPS574237A (en) 1980-06-10 1980-06-10 Regeneration method of ion exchange resin

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7715480A JPS574237A (en) 1980-06-10 1980-06-10 Regeneration method of ion exchange resin

Publications (2)

Publication Number Publication Date
JPS574237A true JPS574237A (en) 1982-01-09
JPS6251145B2 JPS6251145B2 (en) 1987-10-28

Family

ID=13625866

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7715480A Granted JPS574237A (en) 1980-06-10 1980-06-10 Regeneration method of ion exchange resin

Country Status (1)

Country Link
JP (1) JPS574237A (en)

Also Published As

Publication number Publication date
JPS6251145B2 (en) 1987-10-28

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