GB1516378A - Method of regenerating a bed of mixed ion exchange resins - Google Patents

Method of regenerating a bed of mixed ion exchange resins

Info

Publication number
GB1516378A
GB1516378A GB51694/75A GB5169475A GB1516378A GB 1516378 A GB1516378 A GB 1516378A GB 51694/75 A GB51694/75 A GB 51694/75A GB 5169475 A GB5169475 A GB 5169475A GB 1516378 A GB1516378 A GB 1516378A
Authority
GB
United Kingdom
Prior art keywords
exchange resin
bed
cation
hydrazine
regenerated
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.)
Expired
Application number
GB51694/75A
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.)
Crane Co
Original Assignee
Crane Co
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 Crane Co filed Critical Crane Co
Publication of GB1516378A publication Critical patent/GB1516378A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/70—Treatment of water, waste water, or sewage by reduction
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J49/00—Regeneration or reactivation of ion-exchangers; Apparatus therefor
    • B01J49/05—Regeneration or reactivation of ion-exchangers; Apparatus therefor of fixed beds
    • B01J49/08—Regeneration or reactivation of ion-exchangers; Apparatus therefor of fixed beds containing cationic and anionic exchangers in separate beds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J49/00—Regeneration or reactivation of ion-exchangers; Apparatus therefor
    • B01J49/50—Regeneration or reactivation of ion-exchangers; Apparatus therefor characterised by the regeneration reagents
    • B01J49/53—Regeneration or reactivation of ion-exchangers; Apparatus therefor characterised by the regeneration reagents for cationic exchangers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J49/00—Regeneration or reactivation of ion-exchangers; Apparatus therefor
    • B01J49/50—Regeneration or reactivation of ion-exchangers; Apparatus therefor characterised by the regeneration reagents
    • B01J49/57—Regeneration or reactivation of ion-exchangers; Apparatus therefor characterised by the regeneration reagents for anionic exchangers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J49/00—Regeneration or reactivation of ion-exchangers; Apparatus therefor
    • B01J49/80—Automatic regeneration
    • B01J49/85—Controlling or regulating devices therefor

Abstract

1516378 Ion-exchange CRANE CO 17 Dec 1975 [18 Dec 1974] 51694/75 Heading B1J A method of treating an anion-exchange resin bed which is contaminated by some cation-exchange resin (e.g. a bed incompletely separated from a mixed bed), and which has been regenerated by an alkali thereby converting the cation-exchange resin to alkalimetal type, comprises treating the regenerated bed with hydrazine to effect displacement of alkali metal from the cation-exchange resin, the hydrazine being in aqueous solution which after use is purified by being passed through a bed of hydrazine-type cation-exchange resin, whereby the purified hydrazine solution can be re-used. As described a mixed bed is backwashed which separates the two types of resin; the anion-exchange resin is removed to a separate regenerator and regenerated by aqueous caustic soda, then treated with aqueous hydrazine. The hydrazine solution thus acquires sodium ions from traces of cation-exchange resin present, and is treated with a hydrazinetype cation-exchange resin to remove these.
GB51694/75A 1974-12-18 1975-12-17 Method of regenerating a bed of mixed ion exchange resins Expired GB1516378A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP49145178A JPS5172143A (en) 1974-12-18 1974-12-18 Fukusuino datsuenshoriho

Publications (1)

Publication Number Publication Date
GB1516378A true GB1516378A (en) 1978-07-05

Family

ID=15379220

Family Applications (1)

Application Number Title Priority Date Filing Date
GB51694/75A Expired GB1516378A (en) 1974-12-18 1975-12-17 Method of regenerating a bed of mixed ion exchange resins

Country Status (4)

Country Link
JP (1) JPS5172143A (en)
CA (1) CA1053810A (en)
GB (1) GB1516378A (en)
IT (1) IT1060453B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57119844A (en) * 1981-01-16 1982-07-26 Mitsubishi Chem Ind Ltd Method for regeneration of ion exchange resin mixed bed
CN110282696A (en) * 2019-07-24 2019-09-27 中国能源建设集团西北电力试验研究院有限公司 A kind of equipment and its preparation process for temporarily producing qualified demineralized water

Also Published As

Publication number Publication date
JPS5172143A (en) 1976-06-22
CA1053810A (en) 1979-05-01
IT1060453B (en) 1982-08-20
JPS5332975B2 (en) 1978-09-11

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee