GB1207772A - Improvement in or relating to alkali metal chloride electrolysis - Google Patents
Improvement in or relating to alkali metal chloride electrolysisInfo
- Publication number
- GB1207772A GB1207772A GB03869/69A GB1386969A GB1207772A GB 1207772 A GB1207772 A GB 1207772A GB 03869/69 A GB03869/69 A GB 03869/69A GB 1386969 A GB1386969 A GB 1386969A GB 1207772 A GB1207772 A GB 1207772A
- Authority
- GB
- United Kingdom
- Prior art keywords
- electrolyte
- alkali metal
- hypochlorite
- metal chloride
- electrolysis
- 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.)
- Expired
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
- C25B1/01—Products
- C25B1/34—Simultaneous production of alkali metal hydroxides and chlorine, oxyacids or salts of chlorine, e.g. by chlor-alkali electrolysis
- C25B1/36—Simultaneous production of alkali metal hydroxides and chlorine, oxyacids or salts of chlorine, e.g. by chlor-alkali electrolysis in mercury cathode cells
-
- 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
- C25B15/00—Operating or servicing cells
- C25B15/08—Supplying or removing reactants or electrolytes; Regeneration of electrolytes
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)
- Water Treatment By Electricity Or Magnetism (AREA)
Abstract
1,207,772. Alkali metal chloride electrolysis. FARBWERKE HOECHST A.G. March 17, 1969 [March 22, 1968], No.13869/69. Heading C7B. In the electrolysis of alkali metal chloride using a mercury cathode, the electrolyte is recycled through steps including adding alkali metal chloride to the electrolyte from the electrolysis cell and filtering the electrolyte, while alkaline, to remove impurities before returning the electrolyte to the cell, and as a further step an amount of hypochlorite is introduced into the electrolyte before the filtration such that the electrolyte still contains hypochlorite after the filtration. Preferably the amount of hypochlorite remaining after filtration is 3 to 10 grams per cubic metre. Hypochlorite may be added as a solution of alkali metal hypochlorite or by forming it in situ by reaction of chlorine with hydroxide ions.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19681767026 DE1767026B1 (en) | 1968-03-22 | 1968-03-22 | PROCESS FOR REDUCING MERCURY LOSS DURING CHLORALKALINE ELECTROLYSIS BY THE AMALGAM PROCESS |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1207772A true GB1207772A (en) | 1970-10-07 |
Family
ID=5699205
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB03869/69A Expired GB1207772A (en) | 1968-03-22 | 1969-03-17 | Improvement in or relating to alkali metal chloride electrolysis |
Country Status (10)
| Country | Link |
|---|---|
| US (1) | US3801480A (en) |
| AT (1) | AT281873B (en) |
| BE (1) | BE730335A (en) |
| BR (1) | BR6906301D0 (en) |
| DE (1) | DE1767026B1 (en) |
| FI (1) | FI49285C (en) |
| FR (1) | FR2004577A1 (en) |
| GB (1) | GB1207772A (en) |
| NL (1) | NL161203C (en) |
| SE (1) | SE337582B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3755110A (en) * | 1970-03-18 | 1973-08-28 | Basf Ag | Process for the recovery of mercury from the brine filter sludge obtained in the electrolysis of alkali metal chlorides by the amalgam process |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3691037A (en) * | 1971-03-25 | 1972-09-12 | Fmc Corp | Mercury recovery from chlorine cells utilizing mercury cathodes |
| US4012297A (en) * | 1976-01-16 | 1977-03-15 | Basf Wyandotte Corporation | Mercury recovery and recycle process |
| US4124459A (en) * | 1977-07-21 | 1978-11-07 | Stauffer Chemical Company | Process for removing mercury from brine sludges |
| US4149943A (en) * | 1977-08-31 | 1979-04-17 | Ppg Industries, Inc. | Method of recovering mercury |
| US4578195A (en) * | 1982-09-29 | 1986-03-25 | Olin Corporation | Process for the purification of effluents and purge streams containing trace elements |
| US4397720A (en) * | 1982-09-29 | 1983-08-09 | Olin Corporation | Removal of chlorate and hypochlorite from electrolyte cell brine |
| US4518760A (en) * | 1983-08-11 | 1985-05-21 | Olin Corporation | Process for producing poly(dithiocarbamate) chelating resins |
| CN105862069A (en) * | 2016-06-07 | 2016-08-17 | 广西博世科环保科技股份有限公司 | Efficient sodium chlorate electrolysis system |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE858548C (en) * | 1941-11-11 | 1952-12-08 | Lech Chemie Gersthofen | Removal of chlorine and / or hypochlorite from alkali chloride solutions |
-
1968
- 1968-03-22 DE DE19681767026 patent/DE1767026B1/en not_active Withdrawn
-
1969
- 1969-01-10 SE SE00280/69A patent/SE337582B/xx unknown
- 1969-02-11 BR BR206301/69A patent/BR6906301D0/en unknown
- 1969-02-24 FI FI690572A patent/FI49285C/en active
- 1969-03-12 NL NL6903819.A patent/NL161203C/en not_active IP Right Cessation
- 1969-03-17 GB GB03869/69A patent/GB1207772A/en not_active Expired
- 1969-03-20 AT AT276669A patent/AT281873B/en not_active IP Right Cessation
- 1969-03-24 BE BE730335D patent/BE730335A/xx unknown
- 1969-03-24 FR FR6908550A patent/FR2004577A1/fr not_active Withdrawn
-
1971
- 1971-09-20 US US00182200A patent/US3801480A/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3755110A (en) * | 1970-03-18 | 1973-08-28 | Basf Ag | Process for the recovery of mercury from the brine filter sludge obtained in the electrolysis of alkali metal chlorides by the amalgam process |
Also Published As
| Publication number | Publication date |
|---|---|
| US3801480A (en) | 1974-04-02 |
| NL6903819A (en) | 1969-09-24 |
| BE730335A (en) | 1969-09-24 |
| FI49285C (en) | 1975-05-12 |
| FR2004577A1 (en) | 1969-11-28 |
| NL161203C (en) | 1980-01-15 |
| BR6906301D0 (en) | 1973-01-09 |
| SE337582B (en) | 1971-08-16 |
| NL161203B (en) | 1979-08-15 |
| FI49285B (en) | 1975-01-31 |
| DE1767026B1 (en) | 1971-06-16 |
| AT281873B (en) | 1970-06-10 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed [section 19, patents act 1949] | ||
| PCNP | Patent ceased through non-payment of renewal fee |