FR2389684A1 - - Google Patents
Info
- Publication number
- FR2389684A1 FR2389684A1 FR7813157A FR7813157A FR2389684A1 FR 2389684 A1 FR2389684 A1 FR 2389684A1 FR 7813157 A FR7813157 A FR 7813157A FR 7813157 A FR7813157 A FR 7813157A FR 2389684 A1 FR2389684 A1 FR 2389684A1
- Authority
- FR
- France
- Prior art keywords
- concentration
- sodium hydroxide
- aqueous solution
- electrolysis
- aqueous
- 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
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/20—Manufacture of shaped structures of ion-exchange resins
- C08J5/22—Films, membranes or diaphragms
- C08J5/2206—Films, membranes or diaphragms based on organic and/or inorganic macromolecular compounds
- C08J5/2218—Synthetic macromolecular compounds
- C08J5/2231—Synthetic macromolecular compounds based on macromolecular compounds obtained by reactions involving unsaturated carbon-to-carbon bonds
- C08J5/2237—Synthetic macromolecular compounds based on macromolecular compounds obtained by reactions involving unsaturated carbon-to-carbon bonds containing fluorine
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01D—COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM, RUBIDIUM, CAESIUM, OR FRANCIUM
- C01D3/00—Halides of sodium, potassium or alkali metals in general
- C01D3/14—Purification
- C01D3/145—Purification by solid ion-exchangers or solid chelating agents
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
- C25B1/00—Electrolytic production of inorganic compounds or non-metals
- C25B1/01—Products
- C25B1/34—Simultaneous production of alkali metal hydroxides and chlorine, oxyacids or salts of chlorine, e.g. by chlor-alkali electrolysis
- C25B1/46—Simultaneous production of alkali metal hydroxides and chlorine, oxyacids or salts of chlorine, e.g. by chlor-alkali electrolysis in diaphragm cells
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2327/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers
- C08J2327/02—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers not modified by chemical after-treatment
- C08J2327/12—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers not modified by chemical after-treatment containing fluorine atoms
- C08J2327/18—Homopolymers or copolymers of tetrafluoroethylene
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Health & Medical Sciences (AREA)
- Electrochemistry (AREA)
- Metallurgy (AREA)
- Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)
- Manufacture Of Macromolecular Shaped Articles (AREA)
Abstract
a. Procédé de préparation d'hydroxyde de sodium par électrolyse d'une solution aqueuse de chlorure de sodium en utilisant une membrane fluorée échangeuse de cations présentant une capacité d'échange d'ions de 0,8 à 2,0 méq/g de polymère sec et présentant des groupements en acide carboxylique en tant que groupements fonctionnels et en maintenant une concentration de la solution aqueuse d'hydroxyde de sodium dans le compartiment cathodique dans l'intervalle de 20 à 45 % en poids. b. II se caractérise en ce que la concentration en calcium dans la solution aqueuse de NaCI est maintenue à moins de 0,08 mg/l pendant l'électrolyse. c. Industrie de la soude
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP52050685A JPS5813632B2 (ja) | 1977-05-04 | 1977-05-04 | 電解用塩化アルカリ水溶液の精製方法 |
JP14226977A JPS5475497A (en) | 1977-11-29 | 1977-11-29 | Electrolyzing method for aqueous solution of sodium chloride |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2389684A1 true FR2389684A1 (fr) | 1978-12-01 |
FR2389684B1 FR2389684B1 (fr) | 1985-09-06 |
Family
ID=26391141
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7813157A Expired FR2389684B1 (fr) | 1977-05-04 | 1978-05-03 |
Country Status (8)
Country | Link |
---|---|
US (1) | US4202743A (fr) |
CA (1) | CA1141696A (fr) |
DE (1) | DE2819527A1 (fr) |
FR (1) | FR2389684B1 (fr) |
GB (1) | GB1572322A (fr) |
IT (1) | IT1096202B (fr) |
NL (1) | NL7804322A (fr) |
SE (1) | SE7805137L (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2424335A1 (fr) * | 1978-04-27 | 1979-11-23 | Ppg Industries Inc | Procede pour l'elimination d'impuretes presentes a raison de quelques parties par milliard dans des saumures de chlorures de metaux alcalins |
Families Citing this family (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS551351B2 (fr) * | 1974-03-07 | 1980-01-12 | ||
JPS5565372A (en) * | 1978-11-10 | 1980-05-16 | Asahi Glass Co Ltd | Electrolyzing method of aqueous potassium chloride solution |
US4308030A (en) * | 1981-01-12 | 1981-12-29 | Olin Corporation | Method of determination of alkaline earth metal ions in concentrated alkali metal chloride brines |
US4417961A (en) * | 1981-03-30 | 1983-11-29 | The Dow Chemical Company | Membrane cell brine feed |
US4381230A (en) * | 1981-06-22 | 1983-04-26 | The Dow Chemical Company | Operation and regeneration of permselective ion-exchange membranes in brine electrolysis cells |
JPS59162285A (ja) * | 1983-03-04 | 1984-09-13 | Asahi Chem Ind Co Ltd | イオン交換膜法による食塩の電解方法 |
US4568434A (en) * | 1983-03-07 | 1986-02-04 | The Dow Chemical Company | Unitary central cell element for filter press electrolysis cell structure employing a zero gap configuration and process utilizing said cell |
US4488946A (en) * | 1983-03-07 | 1984-12-18 | The Dow Chemical Company | Unitary central cell element for filter press electrolysis cell structure and use thereof in the electrolysis of sodium chloride |
US4560452A (en) * | 1983-03-07 | 1985-12-24 | The Dow Chemical Company | Unitary central cell element for depolarized, filter press electrolysis cells and process using said element |
US4673479A (en) * | 1983-03-07 | 1987-06-16 | The Dow Chemical Company | Fabricated electrochemical cell |
US4584071A (en) * | 1983-03-30 | 1986-04-22 | E. I. Du Pont De Nemours And Company | Process for electrolysis of brine with iodide impurities |
US4445987A (en) * | 1983-03-30 | 1984-05-01 | Oronzio De Nora S.A. | Electrolytic purification and reconcentration of wash and rinse caustic solutions recovered from the regeneration of ion exchange resins |
US4618403A (en) * | 1983-10-24 | 1986-10-21 | Olin Corporation | Method of stabilizing metal-silica complexes in alkali metal halide brines |
JPS61166991A (ja) * | 1985-01-18 | 1986-07-28 | Asahi Glass Co Ltd | 食塩電解方法 |
US4900408A (en) * | 1988-02-01 | 1990-02-13 | E. I. Du Pont De Nemours & Co. | Membrane electrolytic process for producing concentrated caustic |
EP0479392B1 (fr) * | 1990-10-05 | 1998-01-14 | Asahi Kasei Kogyo Kabushiki Kaisha | Méthode pour l'électrolyse de chlorure d'un métal alcalin utilisant une membrane échangeuse de cations |
US5494647A (en) * | 1993-10-04 | 1996-02-27 | The United States Of America As Represented By The United States Department Of Energy | Use of Chelex-100 for selectively removing Y-90 from its parent Sr-90 |
US6375825B1 (en) | 1999-10-28 | 2002-04-23 | Chemical Products Corporation | Process for the production of alkaline earth hydroxide |
US20080003507A1 (en) * | 2006-06-30 | 2008-01-03 | Chenniah Nanjundiah | Formulation Of Electrolyte Solutions For Electrochemical Chlorine Dioxide Generators |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2172259A1 (fr) * | 1972-02-16 | 1973-09-28 | Diamond Shamrock Corp | |
DE2638791A1 (de) * | 1975-08-29 | 1977-03-03 | Asahi Glass Co Ltd | Fluorierte kationenaustauschermembran und verwendung derselben zur elektrolyse von alkalimetallhalogeniden |
FR2328056A1 (fr) * | 1975-10-17 | 1977-05-13 | Asahi Glass Co Ltd | Procede de preparation d'hydroxydes de metal alcalin |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS564495B2 (fr) * | 1971-11-05 | 1981-01-30 | ||
US4040919A (en) * | 1974-10-29 | 1977-08-09 | Hooker Chemicals & Plastics Corporation | Voltage reduction of membrane cell for the electrolysis of brine |
JPS5186100A (ja) * | 1975-01-25 | 1976-07-28 | Asahi Chemical Ind | Ensuinodenkaihoho |
US4073706A (en) * | 1976-02-06 | 1978-02-14 | Diamond Shamrock Corporation | Brine treatment for trace metal removal |
JPS52145397A (en) * | 1976-03-31 | 1977-12-03 | Asahi Chem Ind Co Ltd | Electrolysis |
-
1978
- 1978-04-24 NL NL7804322A patent/NL7804322A/xx active Search and Examination
- 1978-04-25 GB GB16330/78A patent/GB1572322A/en not_active Expired
- 1978-04-28 CA CA000302281A patent/CA1141696A/fr not_active Expired
- 1978-05-02 US US05/902,084 patent/US4202743A/en not_active Expired - Lifetime
- 1978-05-03 SE SE7805137A patent/SE7805137L/xx unknown
- 1978-05-03 DE DE19782819527 patent/DE2819527A1/de active Granted
- 1978-05-03 FR FR7813157A patent/FR2389684B1/fr not_active Expired
- 1978-05-04 IT IT23014/78A patent/IT1096202B/it active
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2172259A1 (fr) * | 1972-02-16 | 1973-09-28 | Diamond Shamrock Corp | |
DE2638791A1 (de) * | 1975-08-29 | 1977-03-03 | Asahi Glass Co Ltd | Fluorierte kationenaustauschermembran und verwendung derselben zur elektrolyse von alkalimetallhalogeniden |
FR2328056A1 (fr) * | 1975-10-17 | 1977-05-13 | Asahi Glass Co Ltd | Procede de preparation d'hydroxydes de metal alcalin |
Non-Patent Citations (4)
Title |
---|
CA1976 * |
CA1977 * |
EXBK/70 * |
EXBK/72 * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2424335A1 (fr) * | 1978-04-27 | 1979-11-23 | Ppg Industries Inc | Procede pour l'elimination d'impuretes presentes a raison de quelques parties par milliard dans des saumures de chlorures de metaux alcalins |
Also Published As
Publication number | Publication date |
---|---|
SE7805137L (sv) | 1978-11-05 |
GB1572322A (en) | 1980-07-30 |
NL7804322A (nl) | 1978-11-07 |
IT1096202B (it) | 1985-08-26 |
IT7823014A0 (it) | 1978-05-04 |
US4202743A (en) | 1980-05-13 |
DE2819527A1 (de) | 1978-11-09 |
FR2389684B1 (fr) | 1985-09-06 |
DE2819527C2 (fr) | 1988-02-04 |
CA1141696A (fr) | 1983-02-22 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |