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公开(公告)号：DE3926586A1
公开(公告)日：1991-02-14
申请号：DE3926586
申请日：1989-08-11
Applicant: HAECKER MASCHINEN GMBH ING
Inventor： HAECKER KARL , KOELLNER WILLI
Abstract: Rinsing water from the glass industry which contains H2SO4, HF, As and/or Sb as well as possibly Pb is conducted through an anion exchanger of type I or II where the As- and Sb-fluoride complex ions are removed in a first stage followed by a second treatment with Ca(OH)2 to ppte. out arsenates and antimonates. Pref. the first treatment is carried out at a water pH of 0-2. The exchange is a macro-porous anion exchange contg. chloride or hydroxyl ions. USE/ADVANTAGE - Cleaning the waste water from glass melting, mechanical grinding and acid polishing. The complex ions are removed before the H2SO4.
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公开(公告)号：AU5848290A
公开(公告)日：1991-02-06
申请号：AU5848290
申请日：1990-07-05
Applicant: ALVARO AFFONSO
Inventor： AFFONSO ALVARO
IPC: B01J41/04 , B01J41/05 , B01J47/00 , B01J47/012 , B01J47/02 , B01J47/024 , C02F1/00
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公开(公告)号：AU7503587A
公开(公告)日：1988-01-21
申请号：AU7503587
申请日：1987-07-02
Applicant: DOW CHEMICAL CO
Inventor： NAME NOT GIVEN
IPC: C02F1/28 , B01D15/04 , B01D61/00 , B01D61/58 , B01J41/04 , B01J41/05 , C02F1/42 , C02F1/44 , C02F9/00 , B01J41/06
Abstract: A combined membrane/sorption process is used to selectively remove ions from liquid streams. As an example, nitrate ions can be more effectively removed from an aqueous stream also containing sulfate ions. Sulfate ions normally are not needed or desired to be removed from drinking water, but are typically sorbed by the available ion exchange resins and result in inefficient use of the ion exchange capacity. The disclosed process and apparatus use an ion selective membrane (10) to first remove the sulfate ions (12) from the stream and then remove the nitrate ions by ion exchange (20).
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公开(公告)号：SU963957A1
公开(公告)日：1982-10-07
申请号：SU7771096
申请日：1980-03-04
Applicant: STROJOPRAV OPP INOPREDPRIYATIE
Inventor： VATSLAV MIKHEK
IPC: C02F1/42 , B01J41/04 , B01J41/05 , C02F101/16 , C02F103/04
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公开(公告)号：ES8200909A1
公开(公告)日：1981-11-16
申请号：ES498587
申请日：1981-01-16
Applicant: BAYER AG
IPC: C08F8/00 , B01J41/04 , B01J41/05 , B01J41/07 , B01J41/14 , C08F8/02 , C08F8/44 , C08F220/60 , C08J5/20 , C08L33/24
Abstract: PROCEDIMIENTO PARA LA OBTENCION DE INTERCAMBIADORES DE ANIONES A BASE DE POLIACRIL O POLI-METACRILAMIDAS N-ALQUILIZADOS, RETICULADOS QUE CONTIENEN GRUPOS AMINO DEBILMENTE BASICOS Y GRUPOS AMONIO CUATERNARIOS. COMPRENDE LAS SIGUIENTES ETAPAS: PRIMERA, SE PREPARA UNA RESINA ESTER DE ACIDO (MET-ACRILICO RETICULADO MEDIANTE COPOLIMERIZACION DE ESTER DE ALQUILO DE CIDO ACRILICO O METACRILICO INFERIOR, QUE CONTIENE COMO MINIMO UN AGENTE DE RETICULACION; SEGUNDA, SE AMINOLIZA LA RESINA ESTER CON POLIAMINAS QUE CONTIENEN COMO MINIMO UN GRUPO AMINO PRIMARIO; Y, POR ULTIMO, SE CUATERNIZAN PARCIALMENTE LOS GRUPOS AMINO DE LA RESINA DE POLI (MET) ACRILAMIDA N-AMINOALQUILIZADA FORMADA EN LA SEGUNDA ETAPA, CON AGENTES DE ALQUILACION ADECUADOS. DE APLICACION EN EL TRATAMIENTO DEL AGUA COMO PURIFICADOR DE LA MISMA.
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Patent Agency Ranking106.发明专利
公开(公告)号：DE1950603A1
公开(公告)日：1971-04-15
申请号：DE1950603
申请日：1969-10-08
Applicant: BASF AG
Inventor： FRIZ HANS DR , STECHL HANNS-HELGE DR , PLATZ ROLF DR
Abstract: Continuous removal of S-containing anions from alkaline solutions used washing gases Sulphite, sulphate, thiosulphate and thiocyanate anions are removed from alkaline solution used for removing H2S or COS from gas mixture or CO2 from S-containing gases by passing the spent alkaline solution through an anion exchanger. This process is much more convenient than the usual distillation under vacuum; it is esp. suitable for the regeneration of alkanolamine solution, or N-methylpyrrolidone.
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公开(公告)号：DE1920497A1
公开(公告)日：1970-11-05
申请号：DE1920497
申请日：1969-04-23
Applicant: BAYER AG
Inventor： SIEGERS GUENTER , R BROST HANS
Abstract: The carboxyl cation is a mixed polymer with acrylic acid and/or methacrylic acid and divinyl benzene, the anion is a copolymer of styrene and divinyl benzene, with trimethylammonium ion and dimethylethanol ammonium group. To regenerate the cations a weak acid is used, the corresponding solution of the salt will regenerate the anions. The two exchange components are in the ratio of 1:10 or 10:1, and the anion component must have macroporosity as well as being strongly basic.
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公开(公告)号：GB1193205A
公开(公告)日：1970-05-28
申请号：GB4518767
申请日：1967-10-04
Applicant: BASF AG
Abstract: 1,193,205. Removal of Pd compounds from aq. glyoxal solutions. BADISCHE ANILIN- & SODA-FABRIK A.G. 4 Oct., 1967 [5 Oct., 1966], No. 45187/67. Heading C2C. [Also in Division C1] Glyoxal, obtained by the oxidation of ethylene using nitric acid in the presence of palladium compounds, is purified by removal of the Pd compounds using an anion exchange resin. It is preferable to remove other organic impurities which boil below 100‹ C. prior to treatment with the anion exchange resin. The exchange resin preferably has quaternary ammonium groups and is intimately mixed with the aqueous solution by passing the solution down a column of resin having a particle size of from 0À1 to 1 mm. at a temperature between 0‹ C. and 80‹ C., preferably room temperature. The column may be regenerated with nitric acid and the resulting Pd-containing nitric acid may be reused in the oxidation.
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公开(公告)号：GB1185609A
公开(公告)日：1970-03-25
申请号：GB4627968
申请日：1968-09-30
Applicant: BAYER AG
Inventor： OEHME CHRISTIAN , SIEGERS GUNTER
Abstract: 1,185,609. Ion-exchange; water treatment, FARBENFABRIKEN BAYER A.G. 30 Sept., 1968 [14 Oct., 1967], No. 46279/68. Heading BIJ. Water is treated by passage through a layer bed comprising a weakly basic anion exchanger and a strongly basic anion exchanger in the direction from weakly basic to strongly basic exchanger, regeneration being carried out in counter-current from the strongly basic to the weakly basic exchanger after the exchanger has been charged. Preferably the weakly basic anion exchanger has a spongelike structure and a specific gravity of from 1.01 to 1.1 and the strongly basic anion exchanger has either a sponge like (macroporous) or gel-like structure and a specific gravity of from 1.01 to 1.2.
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