GB757761A - Preparation of alkali metal chlorates - Google Patents
Preparation of alkali metal chloratesInfo
- Publication number
- GB757761A GB757761A GB18010/54A GB1801054A GB757761A GB 757761 A GB757761 A GB 757761A GB 18010/54 A GB18010/54 A GB 18010/54A GB 1801054 A GB1801054 A GB 1801054A GB 757761 A GB757761 A GB 757761A
- Authority
- GB
- United Kingdom
- Prior art keywords
- solution
- chlorate
- electrolysis
- hypochlorite
- vat
- 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
- C25B1/24—Halogens or compounds thereof
- C25B1/26—Chlorine; Compounds thereof
- C25B1/265—Chlorates
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)
- Battery Electrode And Active Subsutance (AREA)
- Inorganic Compounds Of Heavy Metals (AREA)
Abstract
<PICT:0757761/III/1> In a process for producing alkali metal chlorates by electrolysis of a solution of the chloride, the chloride solution is circulated in the interelectrode space between an anode and a cathode at such a speed that the OH-ions formed at the cathode cannot on the average, reach the anode, and by allowing the electrolyzed solution to absorb the evolved chlorine to produce hypochlorite and thereafter allowing the hypochlorite solution obtained to rest for a time and at a temperature sufficient for it to be chemically transformed to chlorate, the transformation being effected in a reaction space outside the zone of electrolysis. Control of the migration of the OH-ions and the absorption of chlorine to form hypochlorite are effected by suitably correlating the speed of circulation of the chloride solution and the value of the electrolysis current. As shown in the Figure, chloride solution passes from vat 15 through line 16 to a vessel 4 beneath the electrolysis zone formed between a cathode 1 and an anode 2, through the interelectrode space to pass via pipe 7 to a vessel 9 where the chemical transformation of hypochlorite to chlorate occurs thence to a tank 12 from which the chloride solution now containing chlorate is recirculated through pump 14 and line 13 to the supply vat 15. Product chlorate solution is withdrawn from line 20. The electrolysis gases, other than chlorine, consisting almost entirely of hydrogen are removed through tube 6. In a process for producing sodium chlorate, the cathodeanode assembly had a height of 16 cms. and an interelectrode distance of 2 cms. with a graphite anode 6 cms. in diameter. Employing a current density of 10 amps per square decimeter, a minimum flow of electrolyte of 2.5 litres per hour was theoretically necessary to obtain the desired effect but to avoid disturbances due to gas evolution a flow of 10 litres per hour was employed. The hypochlorite solution at a pH of 8 passed from the electrolysis zone to the vessel 9 where the temperature was maintained at 60 DEG C. by heating means 10 and the pH reduced to 7.2 by acidification with hydrochloric acid. The solution after the transformation in vat 9 had a pH of 6.5. If desired the vat 9, instead of being separate from the electrolysis zone as shown may be adjacent to but distinct from the electrolysis zone proper. It is preferred to recycle the chloride solution containing the formed hypochlorite around the cycle until the chlorate concentration is sufficiently high or alternatively several plants may be arranged in series such that the pump 14 of one delivers the chloride/chlorate solution to the vat 15 of the next one. Fresh chloride solution is introduced into the system at a point 19. Specification 714,234 is referred to.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR951863X | 1953-07-02 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB757761A true GB757761A (en) | 1956-09-26 |
Family
ID=9486319
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB18010/54A Expired GB757761A (en) | 1953-07-02 | 1954-06-18 | Preparation of alkali metal chlorates |
Country Status (5)
Country | Link |
---|---|
US (1) | US2797192A (en) |
CH (1) | CH318810A (en) |
DE (1) | DE951863C (en) |
FR (1) | FR1086055A (en) |
GB (1) | GB757761A (en) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BE628240A (en) * | 1962-03-30 | |||
DE1567539B1 (en) * | 1965-08-09 | 1971-07-15 | Fred Daniel Gibson Jr | PROCESS FOR THE PRODUCTION OF SODIUM CHLORATE AND OR SODIUM PERCHLORATE |
US3640804A (en) * | 1966-04-18 | 1972-02-08 | Chemech Eng Ltd | Method for conducting electrolyte to, from and through an electrolytic cell |
FR1502793A (en) * | 1966-09-14 | 1967-11-24 | Krebs & Cie Paris | Electrolytic process for the electrolytic manufacture of alkali metal chlorates and in particular of sodium chlorate |
CN1042842C (en) * | 1993-05-31 | 1999-04-07 | 谭秉彝 | Method for prodn. of sodium chlorate by enclosed circulation of non-evaporating mother liquor |
WO2017170904A1 (en) | 2016-03-31 | 2017-10-05 | 本部三慶株式会社 | Method for manufacturing chlorous acid water using raw material obtained by salt electrolysis |
US10961137B2 (en) * | 2017-01-07 | 2021-03-30 | Johan Dirk Bult | Water treatment system |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2180668A (en) * | 1939-11-21 | Process for the electrolytic prep | ||
US1173346A (en) * | 1916-02-29 | Arthur E Gibbs | Method for the manufacture of chlorates and perchlorates of alkali metals. |
-
1953
- 1953-07-02 FR FR1086055D patent/FR1086055A/en not_active Expired
-
1954
- 1954-06-08 CH CH318810D patent/CH318810A/en unknown
- 1954-06-18 GB GB18010/54A patent/GB757761A/en not_active Expired
- 1954-06-30 US US440398A patent/US2797192A/en not_active Expired - Lifetime
- 1954-07-02 DE DES39842A patent/DE951863C/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
US2797192A (en) | 1957-06-25 |
CH318810A (en) | 1957-01-31 |
FR1086055A (en) | 1955-02-09 |
DE951863C (en) | 1956-11-08 |
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