GB825445A - Process and apparatus for the electrolytic decomposition of amalgams - Google Patents
Process and apparatus for the electrolytic decomposition of amalgamsInfo
- Publication number
- GB825445A GB825445A GB28561/55A GB2856155A GB825445A GB 825445 A GB825445 A GB 825445A GB 28561/55 A GB28561/55 A GB 28561/55A GB 2856155 A GB2856155 A GB 2856155A GB 825445 A GB825445 A GB 825445A
- Authority
- GB
- United Kingdom
- Prior art keywords
- cell
- amalgam
- electrode
- electrodes
- mercury
- 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
- C25B1/42—Decomposition of amalgams
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S204/00—Chemistry: electrical and wave energy
- Y10S204/03—Auxiliary internally generated electrical energy
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 Metals (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
Abstract
<PICT:0825445/III/1> <PICT:0825445/III/2> <PICT:0825445/III/3> <PICT:0825445/III/4> <PICT:0825445/III/5> An amalgam decomposition cell comprises a vessel, an amalgam electrode 20, Fig. 5, e.g. a plurality of discs mounted on a rotatable shaft, in the vessel, and a depolarization electrode 18 having a porous, sintered, electrically conductive surface resistant to the hydroxide electrolyte formed in the cell, the electrode 18 having an electrode potential more positive than that of the electrode 20. The cell is connected in series with a direct-current supply source and an electrolytic mercury cell for electrolysing brine, the electrode 18 being connected to the negative of the supply source and the amalgam electrodes 20 to the positive, whereby the decomposition cell acts as a voltaic cell in the same sense as the direct current supply source. The depolarization electrode may comprise a highly porous sintered nickel strip 1, Fig. 1, formed by sintering nickel powder on both sides of a foil and is bent into sinuous loops for supporting above the liquid amalgam in the vessel, or the electrodes 18, Fig. 5, may be formed by layers of nickel powder sintered on one or both sides of carrier plates or by highly porous sheets or foils secured, e.g. by spot welding, to the sides of discs. Iron powder may be employed for sintering instead of or in addition to nickel. The amalgam electrode 20 may comprise one or more stationary roughened or sintered surfaces over which the amalgam is trickled, e.g. comprising a fabric or perforated metal sheet coated on each side with sintered metal powder. Alternatively, amalgam may flow into and out of pockets in the surface of the electrode through pores, holes or slots. Where the amalgam electrodes are rotatable discs 24, Fig. 6, they may be mounted on a common shaft 26 with disc electrodes 23 of the mercury cell 21, a pump circulating the mercury and amalgam between the cells which are in a common casing separated by a partition 25. A conventional graphite amalgam decomposer, e.g. in the form of a wash tower, may be included in the line from the decomposition cell 22 to the mercury cell 21. In the cell 22 fixed, porous, sintered electrodes 30 depend from a cell cover 31 and are interleaved with the disc electrodes, and the electrodes 30 may be electrically subdivided at terminals 34, 35 to enable the decomposition of the amalgam to be regulated by connecting or disconnecting the terminal 35. A plurality of interleaved sintered fixed and rotatable disc electrodes 48, Fig. 11, may be assembled as a unit in a casing which is suspended from the cover 44 of the decomposition cell, a plurality of units being arranged end-to-end in the cell with the shafts 50 for the disc electrodes coupled together. Holes 57, 58 in end walls of the units allow passage of amalgam and of hydrogen respectively. Filling pieces project upwardly from the bases of the casings of the units between adjacent discs 48. A relay 66 may be connected across the direct current supply source 67 so that a fall in the supply voltage allows the relay 66 to close a circuit short-circuiting the decomposition cell 65 to prevent the circulation of undecomposed amalgam to the mercury cell 64. A time-delay relay 70 may be similarly connected and is operative to break the connection between the decomposition cell 65 and the mercury cell 64 on a fall in the supply voltage and to keep the connection broken until a predetermined time after the re-establishment of the voltage, the relay 70 meanwhile closing a circuit comprising the mercury cell 64 and the supply source 67. The current in the mercury cell should exceed that in the decomposition cell by 10% to 15%, and this may be achieved by connecting an auxiliary electrode in the mercury cell, e.g. a graphite anode, of suitable surface area, directly to the supply source, a variable resistance being included in the connection if desired.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEK23651A DE1009172B (en) | 1954-10-07 | 1954-10-07 | Process for the electrical use of the decomposition energy of amalgams |
Publications (1)
Publication Number | Publication Date |
---|---|
GB825445A true GB825445A (en) | 1959-12-16 |
Family
ID=7216782
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB28561/55A Expired GB825445A (en) | 1954-10-07 | 1955-10-06 | Process and apparatus for the electrolytic decomposition of amalgams |
Country Status (4)
Country | Link |
---|---|
US (1) | US2970095A (en) |
DE (1) | DE1009172B (en) |
FR (1) | FR1146570A (en) |
GB (1) | GB825445A (en) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3161546A (en) * | 1959-12-14 | 1964-12-15 | Ernest B Yeager | Continuous feed primary battery |
US3325382A (en) * | 1962-03-01 | 1967-06-13 | Pullman Inc | Process for electrolysis of alkaline earth metal compounds in a mercury cell |
US3301773A (en) * | 1963-05-27 | 1967-01-31 | Phillips Petroleum Co | Hydrazinium amalgams and production of concentrated hydrazine therefrom |
CH465682A (en) * | 1965-07-08 | 1968-11-30 | Greutert Werner | Electric accumulator |
US3537972A (en) * | 1967-01-04 | 1970-11-03 | Edward F De Crosta | Thermogalvanic cells |
GB1185757A (en) * | 1968-03-29 | 1970-03-25 | Murgatroyds Salt & Chem | Electrical Circuit |
US3890211A (en) * | 1968-09-21 | 1975-06-17 | Bayer Ag | Process for recovering energy from the decomposition of amalgam in the electrolysis of alkali metal chlorides |
DE2002298C3 (en) | 1970-01-20 | 1974-05-30 | Guenter Dipl.-Chem. 4134 Rheinberg Barthel | Process for the production of electrodes for technical water electrolysis |
ZA725355B (en) * | 1971-08-06 | 1973-05-30 | W Rast | Chlorination unit |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2733202A (en) * | 1956-01-31 | Electrolytic cells | ||
US631468A (en) * | 1897-10-23 | 1899-08-22 | Carl Kellner | Method of and apparatus for producing alkali salts. |
US699414A (en) * | 1901-08-01 | 1902-05-06 | Charles J Reed | Method of treating solutions of salts. |
US809089A (en) * | 1905-05-10 | 1906-01-02 | Henry Spencer Blackmore | Process of making caustic alkali. |
DE527827C (en) * | 1927-04-15 | 1931-06-22 | Saechsischer Blaufarbenwerks V | Process for the electrolytic production of anodes for electrolytic nickel plating |
US2148404A (en) * | 1936-03-11 | 1939-02-21 | Du Pont | Production of alkali metals |
US2323042A (en) * | 1939-05-30 | 1943-06-29 | Honsberg Werner | Process for the electrolytic decomposition of metal compounds |
BE439792A (en) * | 1939-06-08 | |||
US2311745A (en) * | 1939-08-19 | 1943-02-23 | Mathieson Alkali Works Inc | Mercury amalgam decomposition cell |
US2508523A (en) * | 1946-09-11 | 1950-05-23 | Krebs & Co | Device for the protection of the cathodes of electrolytic cells |
US2597545A (en) * | 1950-11-15 | 1952-05-20 | Maurice C Taylor | Electrolytic method |
-
1954
- 1954-10-07 DE DEK23651A patent/DE1009172B/en active Pending
-
1955
- 1955-10-03 US US538126A patent/US2970095A/en not_active Expired - Lifetime
- 1955-10-06 FR FR1146570D patent/FR1146570A/en not_active Expired
- 1955-10-06 GB GB28561/55A patent/GB825445A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
US2970095A (en) | 1961-01-31 |
DE1009172B (en) | 1957-05-29 |
FR1146570A (en) | 1957-11-13 |
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