Claims
- 1. A process for reducing loss of mercury in an alkali metal chloride electrolysis plant operating according to the amalgamation process and including an open brine evaporation cooling system, which comprises adjusting the redox potential E.sub.R of the brine to be evaporated so that the value of said redox potential is more than 1391-6.66 (pH) -5.94 (pH).sup.2 millivolts, but not more than 1100 millivolts, based on the voltage of a standard hydrogen electrode, and the pH of the brine is of from 7.0 to 9.0; and evaporating the brine in the open brine evaporation cooling system.
- 2. A process as claimed in claim 1, wherein the value of the redox potential of the brine is less than or equal to 939+110.3 (pH) -12.74 (pH).sup.2.
- 3. A process as claimed in claim 2, wherein the value of the redox potential of the brine is less than or equal to 1387-1.46 (pH) -6.16 (pH).sup.2.
- 4. A process as claimed in claim 1, wherein the brine is a sodium chloride brine.
- 5. A process as claimed in claim 1, wherein the pH of the brine is at most 8.5.
Priority Claims (1)
Number |
Date |
Country |
Kind |
2741985 |
Sep 1977 |
DEX |
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Parent Case Info
This is a continuation-in-part application of application Ser. No. 942,266 filed Sept. 14, 1978, now abandoned.
US Referenced Citations (1)
Number |
Name |
Date |
Kind |
1389870 |
GBX |
Apr 1975 |
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Foreign Referenced Citations (8)
Number |
Date |
Country |
916866 |
Jan 1963 |
GBX |
932337 |
Jul 1963 |
GBX |
1154420 |
Jun 1969 |
GBX |
1339261 |
Nov 1973 |
GBX |
1375656 |
Nov 1974 |
GBX |
1389870 |
Apr 1975 |
GBX |
1392331 |
Apr 1975 |
GBX |
1439803 |
Jun 1976 |
GBX |
Continuation in Parts (1)
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Number |
Date |
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Parent |
942266 |
Sep 1978 |
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