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公开(公告)号：FR2419756A1
公开(公告)日：1979-10-12
申请号：FR7807507
申请日：1978-03-15
Applicant: ICI AUSTRALIA LTD
Abstract: A process for purifying brine using a deionising step is claimed in which the brine water contg. bicarbonate ion and bisulphite ion and having a pH of 0.5-1.5 is treated with an amphoteric ion exchange resin contg. a weak acidic, higher mol material and a weak basic, higher hol material and thereby, the purified brine water is obtd. The weak acidic, higher mol material is chosen from a polymer of ethylenic unsatd. carboxylic acid or its polymer deriv. comprising a polymer of (meth)acrylic acid. The weak basic, higher mol material is chosen from a polymer of aromatic amine or aliphatic amine, comprising a polymer of amine deriv. of styrene, a polymer of triallylamine and a polymer of propyl-diallyl. amine. The process is used for producing a purified water contg. NaCl for industrial use.
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公开(公告)号：AU3296478A
公开(公告)日：1979-08-09
申请号：AU3296478
申请日：1978-02-03
Applicant: AMAX INC
Inventor： CARLBERG JOHN RAYMOND
Abstract: Cobalt, copper and nickel values are separated from ammoniacal aqueous solutions by contacting the solutions with a chelate exchange resin of polymerized ar-vinylbenzylamino dicarboxylic acids whereby the cobalt, copper and nickel values are loaded on the chelate exchange resin, stripping the cobalt, copper and nickel values from the loaded chelate exchange resin by contacting the loaded resin with a mineral acid and restoring the capacity of the chelate exchange resin when it falls below a predetermined value by reacting the degraded chelate exchange resin with an aqueous solution of a halo salt of a carboxylic acid, the aqueous solution being maintained at a pH value greater than about 8.
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公开(公告)号：FR2411630A1
公开(公告)日：1979-07-13
申请号：FR7835275
申请日：1978-12-14
Applicant: EXXON RESEARCH ENGINEERING CO
Abstract: Silica can be removed effectively from a mixed bed demineralizer containing an anion exchange resin and a cation exchange resin during regeneration by (1) PASSING FROM ABOUT 30 TO ABOUT 80 VOLUME % OF AN ANION REGENERANT SOLUTION THROUGH ONLY THE ANION EXCHANGE RESIN, (2) PASSING THE REMAINING PORTION OF THE ANION REGENERANT SOLUTION THROUGH BOTH THE ANION EXCHANGE RESIN AND THE CATION EXCHANGE RESIN, AND (3) PASSING A STREAM OF CATION REGENERANT SOLUTION THROUGH THE CATION EXCHANGE RESIN.
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公开(公告)号：FR2286675B1
公开(公告)日：1979-06-22
申请号：FR7529931
申请日：1975-09-30
Applicant: HOOGOVENS IJMUIDEN BV
Abstract: A regenerative base ion exchange process involving the step of passing a liquid upwardly through a bed of particulate solid base ion exchange resin in a chamber of a two-phase reactor to regenerate said resin, wherein the rate of liquid flow is such that the solid resin is compacted and held by the liquid as a compact bed against a barrier located above it and is prevented by the liquid from sinking.
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公开(公告)号：FR2408383A1
公开(公告)日：1979-06-08
申请号：FR7733795
申请日：1977-11-09
Applicant: ASAHI GLASS CO LTD
Inventor： ASAWA TATSURO , GUNJIMA TOMOKI
Abstract: Electrochemical properties of a cation exchange membrane of a carboxylic acid type fluorinated polymer which is used for an electrolysis of an aqueous solution of an alkali metal chloride is recovered by converting ion exchange groups of -COO)mM; wherein M represents an alkali metal or an alkaline earth metal; and m represents a valence of M; to the corresponding acid or ester groups of -COOR wherein R represents hydrogen or a C1 - C5 alkyl group and heat-treating the fluorinated polymer having the groups of -COOR.
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Patent Agency Ranking
公开(公告)号：FR2404459A1
公开(公告)日：1979-04-27
申请号：FR7825123
申请日：1978-08-31
Applicant: STEINMUELLER GMBH L & C
Abstract: In a regeneration system for the spent anion and cation exchanger resins of a mixed bed filter, the spent resin is transferred into a tank with a mixed resin bed where an ascending water flow separates anion and cation resins. Anion resin and mixed resin are in turn transferred into other tanks. After separate regeneration of the anion and cation resin both are merged and returned to the filter tank. This makes it possible to carry out an external regeneration of spent anion and cation exchanger resins of a mixed bed filter free from partial quantities of the mixed zone resins.
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公开(公告)号：DE2842729A1
公开(公告)日：1979-04-05
申请号：DE2842729
申请日：1978-09-30
Applicant: GEN ELECTRIC
Inventor： HOLLOWAY JAMES HOWARD , PETERSEN GEORGE ERVIN
Abstract: Installation for regenerating a mixt. of spent anionic and cationic exchanger resins contains a resin separator, an ultrasonic resin purifier and a resin mixer, arranged vertically to one another. The resin separator is in the highest position, the purifier is directly below the separator and the mixer is directly below the purifier. A device is provided for conveying the spent resins to the separator, a device for allowing the resins to fall, by gravity, through ultrasonic purifier down to resin mixer; a device for actuating the ultrasonic purifier while the resins fall through it, so as to remove the impurities from resin; a device for charging a liq. carrier, e.g. water, countercurrently to resin, to carry impurities removed from resin to the separator, and also a device for removing the impurities from the resin separator. Plant serves partic. for purifying and chemically regenerating resins used in a condensate treatment system, esp. for a nuclear energy plant. Waste water quantity is reduced, e.g. from 38000 l. to 3800 l. Space is saved. Resins can be regenerated in which ratio cationic : anionic resin varies greatly. The separator can be used as anionic resin regenerator tank and the mixer as cationic resin regenerator tank.
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公开(公告)号：AU497886B2
公开(公告)日：1979-01-18
申请号：AU2170377
申请日：1977-01-27
Applicant: ECODYNE CORP
Inventor： FLYNN GEORGE C , SALEM ELI
Abstract: A process for scrubbing undissolved impurities from the upper portion of an ion exchange resin filtration bed is disclosed wherein air is introduced in the upper portion of the bed and develops a pressure within the vessel. This pressure subsequently forces rinse water down through the upper portion of the bed and out of the vessel. The gas is introduced into the bed and the water is drained therefrom at a level below the bed's upper surface but above a substantial lower portion of the resin bed. In this manner, lesser quantities of scrubbing fluids are required and the majority of the resin material is left undisturbed to maintain maximum ion exchange capacity.
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