FR2367834A1 - Procede de preparation en continu de solutions de dithionite de sodium par reduction cathodique - Google Patents
Procede de preparation en continu de solutions de dithionite de sodium par reduction cathodiqueInfo
- Publication number
- FR2367834A1 FR2367834A1 FR7731162A FR7731162A FR2367834A1 FR 2367834 A1 FR2367834 A1 FR 2367834A1 FR 7731162 A FR7731162 A FR 7731162A FR 7731162 A FR7731162 A FR 7731162A FR 2367834 A1 FR2367834 A1 FR 2367834A1
- Authority
- FR
- France
- Prior art keywords
- continuous preparation
- cathodic reduction
- sodium dithionite
- cathode
- dithionite
- 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
- 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
-
- 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
- C25B1/14—Alkali metal compounds
Landscapes
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)
Abstract
L'invention a pour objet un procédé de préparation en continu de solutions concentrées de dithionite par réduction cathodique d'une solution aqueuse de sulfite et/ou de bisulfite recyclée à la pompe, la réduction ayant lieu dans l'espace cathodique d'une cellule d'électrolyse, qui se compose d'un espace cathodique avec cathode, d'un espace anodique avec anode, séparés par une membrane échangeuse de cations à perméabilité sélective pour l'ion de signe oppose du dithionite. Dans le procédé de l'invention, on fait passer solution au moins dix fois dans le circuit par heure, le volume relatif de catholyte à l'extérieur de la cellule, défini par :
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19762646825 DE2646825A1 (de) | 1976-10-16 | 1976-10-16 | Verfahren zur kontinuierlichen herstellung von natriumdithionitloesungen durch kathodische reduktion |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2367834A1 true FR2367834A1 (fr) | 1978-05-12 |
FR2367834B1 FR2367834B1 (fr) | 1983-02-04 |
Family
ID=5990645
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7731162A Granted FR2367834A1 (fr) | 1976-10-16 | 1977-10-17 | Procede de preparation en continu de solutions de dithionite de sodium par reduction cathodique |
Country Status (5)
Country | Link |
---|---|
US (1) | US4144146A (fr) |
DE (1) | DE2646825A1 (fr) |
FR (1) | FR2367834A1 (fr) |
GB (1) | GB1586717A (fr) |
IT (1) | IT1090036B (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0257815A1 (fr) * | 1986-08-04 | 1988-03-02 | Olin Corporation | Procédé électrochimique de production de solutions d'hydrosulfite |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4743350A (en) * | 1986-08-04 | 1988-05-10 | Olin Corporation | Electrolytic cell |
US4992147A (en) * | 1986-08-04 | 1991-02-12 | Olin Corporation | Electrochemical process for producing hydrosulfite solutions |
US4761216A (en) * | 1987-04-01 | 1988-08-02 | Olin Corporation | Multilayer electrode |
US4770756A (en) * | 1987-07-27 | 1988-09-13 | Olin Corporation | Electrolytic cell apparatus |
US4976835A (en) * | 1988-03-08 | 1990-12-11 | Hoechst Celanese Corporation | Electrosynthesis of sodium dithionite |
US5126018A (en) * | 1988-07-21 | 1992-06-30 | The Dow Chemical Company | Method of producing sodium dithionite by electrochemical means |
US5427658A (en) * | 1993-10-21 | 1995-06-27 | Electrosci Incorporated | Electrolytic cell and method for producing a mixed oxidant gas |
DE19954299A1 (de) * | 1999-11-11 | 2001-05-17 | Eilenburger Elektrolyse & Umwelttechnik Gmbh | Verfahren zur gleichzeitigen elektrochemischen Herstellung von Natriumdithionit und Natriumperoxodisulfat |
US20040159556A1 (en) * | 2003-02-13 | 2004-08-19 | Clariant International Ltd. | Process for improving the reactivity of zinc particles in producing sodium dithionite from zinc dithionite |
DE102004053090A1 (de) * | 2004-11-03 | 2006-05-04 | Basf Ag | Verfahren zur Herstellung von Natriumdithionit |
WO2006066345A1 (fr) * | 2004-12-23 | 2006-06-29 | The Australian National University | Procedes electrolytique et electrochimique ameliore a conductivite renforcee |
US11105011B2 (en) * | 2015-02-02 | 2021-08-31 | Hci Cleaning Products, Llc | Chemical solution production |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2193323A (en) * | 1935-05-10 | 1940-03-12 | Ig Farbenindustrie Ag | Manufacture of hyposulphites |
DE1265147B (de) * | 1962-07-16 | 1968-04-04 | Ici Ltd | Verfahren zur Herstellung von Dithionit |
US3523069A (en) * | 1969-01-29 | 1970-08-04 | Univ British Columbia | Process for the production of dithionites |
US3905879A (en) * | 1973-11-01 | 1975-09-16 | Hooker Chemicals Plastics Corp | Electrolytic manufacture of dithionites |
US3920551A (en) * | 1973-11-01 | 1975-11-18 | Hooker Chemicals Plastics Corp | Electrolytic method for the manufacture of dithionites |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1045675A (en) * | 1962-07-16 | 1966-10-12 | Ici Ltd | Process for the electrolytic production of dithionites |
-
1976
- 1976-10-16 DE DE19762646825 patent/DE2646825A1/de active Granted
-
1977
- 1977-10-05 US US05/839,595 patent/US4144146A/en not_active Expired - Lifetime
- 1977-10-14 IT IT51421/77A patent/IT1090036B/it active
- 1977-10-14 GB GB42794/77A patent/GB1586717A/en not_active Expired
- 1977-10-17 FR FR7731162A patent/FR2367834A1/fr active Granted
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2193323A (en) * | 1935-05-10 | 1940-03-12 | Ig Farbenindustrie Ag | Manufacture of hyposulphites |
DE1265147B (de) * | 1962-07-16 | 1968-04-04 | Ici Ltd | Verfahren zur Herstellung von Dithionit |
US3523069A (en) * | 1969-01-29 | 1970-08-04 | Univ British Columbia | Process for the production of dithionites |
US3905879A (en) * | 1973-11-01 | 1975-09-16 | Hooker Chemicals Plastics Corp | Electrolytic manufacture of dithionites |
US3920551A (en) * | 1973-11-01 | 1975-11-18 | Hooker Chemicals Plastics Corp | Electrolytic method for the manufacture of dithionites |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0257815A1 (fr) * | 1986-08-04 | 1988-03-02 | Olin Corporation | Procédé électrochimique de production de solutions d'hydrosulfite |
Also Published As
Publication number | Publication date |
---|---|
US4144146A (en) | 1979-03-13 |
GB1586717A (en) | 1981-03-25 |
DE2646825A1 (de) | 1978-04-20 |
IT1090036B (it) | 1985-06-18 |
FR2367834B1 (fr) | 1983-02-04 |
DE2646825C2 (fr) | 1987-05-27 |
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