FR2437868A1 - Water demineralisation process - using ion exchange resin particles contg. weak acidic gps. and carbonate type weak basic gps. - Google Patents

Water demineralisation process - using ion exchange resin particles contg. weak acidic gps. and carbonate type weak basic gps.

Info

Publication number
FR2437868A1
FR2437868A1 FR7828115A FR7828115A FR2437868A1 FR 2437868 A1 FR2437868 A1 FR 2437868A1 FR 7828115 A FR7828115 A FR 7828115A FR 7828115 A FR7828115 A FR 7828115A FR 2437868 A1 FR2437868 A1 FR 2437868A1
Authority
FR
France
Prior art keywords
gps
resin particles
weak
type
exchange resin
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
FR7828115A
Other languages
French (fr)
Other versions
FR2437868B1 (en
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.)
Rohm and Haas Co
Original Assignee
Rohm and Haas 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 Rohm and Haas Co filed Critical Rohm and Haas Co
Priority to FR7828115A priority Critical patent/FR2437868A1/en
Publication of FR2437868A1 publication Critical patent/FR2437868A1/en
Application granted granted Critical
Publication of FR2437868B1 publication Critical patent/FR2437868B1/fr
Granted legal-status Critical Current

Links

Classifications

    • 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
    • B01J43/00—Amphoteric ion-exchange, i.e. using ion-exchangers having cationic and anionic groups; Use of material as amphoteric ion-exchangers; Treatment of material for improving their amphoteric ion-exchange properties
    • 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
    • B01J49/40—Thermal regeneration

Abstract

An ion-exchange desalting method uses ion-exchange resin particles contg. both free acid type weak acidic gp. and carbonate type weak basic gp. in the same particle. The particles are contacted with aq. soln. contg. salt of strong acid to effect desalting. The particles having weak acidic gp. in salt type and the weak basic gp. converted into strong acid salt type are heated to convert them into free acid type and free base type respectively, then contacted with carbonic acid to convert the weak basic gp. part into carbonate type. The regenerated resin particles are then reused. The desalting capacity per unit amt. of ion-exchange resin particles is higher and the salt concn. of the treated desalted water is lower than by using known heat regeneration process desalting methods.
FR7828115A 1978-10-02 1978-10-02 Water demineralisation process - using ion exchange resin particles contg. weak acidic gps. and carbonate type weak basic gps. Granted FR2437868A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7828115A FR2437868A1 (en) 1978-10-02 1978-10-02 Water demineralisation process - using ion exchange resin particles contg. weak acidic gps. and carbonate type weak basic gps.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7828115A FR2437868A1 (en) 1978-10-02 1978-10-02 Water demineralisation process - using ion exchange resin particles contg. weak acidic gps. and carbonate type weak basic gps.

Publications (2)

Publication Number Publication Date
FR2437868A1 true FR2437868A1 (en) 1980-04-30
FR2437868B1 FR2437868B1 (en) 1981-04-30

Family

ID=9213229

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7828115A Granted FR2437868A1 (en) 1978-10-02 1978-10-02 Water demineralisation process - using ion exchange resin particles contg. weak acidic gps. and carbonate type weak basic gps.

Country Status (1)

Country Link
FR (1) FR2437868A1 (en)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE905479C (en) * 1943-02-11 1954-03-01 Bayer Ag Process for the treatment of water
US3156644A (en) * 1961-07-25 1964-11-10 Rohm & Haas Deionization process
US3414509A (en) * 1964-06-19 1968-12-03 Universal Oil Prod Co Desalinization of aqueous solutions
US3420773A (en) * 1966-03-03 1969-01-07 Ionics Treatment of water
US3595784A (en) * 1968-10-14 1971-07-27 Ecodyne Corp Continuous countercurrent ion exchange method and apparatus
DE2455835A1 (en) * 1973-12-19 1975-06-26 Ckd Dukla PROCESS FOR THE COMPLETE DESALINATION OF SOLUTIONS
FR2368296A1 (en) * 1976-10-19 1978-05-19 Rohm & Haas IMPROVEMENTS IN METHODS AND DEVICES, FOR ION EXCHANGE, USING THERMALLY REGENERABLE RESINS

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE905479C (en) * 1943-02-11 1954-03-01 Bayer Ag Process for the treatment of water
US3156644A (en) * 1961-07-25 1964-11-10 Rohm & Haas Deionization process
US3414509A (en) * 1964-06-19 1968-12-03 Universal Oil Prod Co Desalinization of aqueous solutions
US3420773A (en) * 1966-03-03 1969-01-07 Ionics Treatment of water
US3595784A (en) * 1968-10-14 1971-07-27 Ecodyne Corp Continuous countercurrent ion exchange method and apparatus
DE2455835A1 (en) * 1973-12-19 1975-06-26 Ckd Dukla PROCESS FOR THE COMPLETE DESALINATION OF SOLUTIONS
FR2368296A1 (en) * 1976-10-19 1978-05-19 Rohm & Haas IMPROVEMENTS IN METHODS AND DEVICES, FOR ION EXCHANGE, USING THERMALLY REGENERABLE RESINS

Also Published As

Publication number Publication date
FR2437868B1 (en) 1981-04-30

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