GB1400053A - Diaphragm cells for electrolysis - Google Patents

Diaphragm cells for electrolysis

Info

Publication number
GB1400053A
GB1400053A GB4320272A GB4320272A GB1400053A GB 1400053 A GB1400053 A GB 1400053A GB 4320272 A GB4320272 A GB 4320272A GB 4320272 A GB4320272 A GB 4320272A GB 1400053 A GB1400053 A GB 1400053A
Authority
GB
United Kingdom
Prior art keywords
anode
cathode
frames
steel
cell
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
Application number
GB4320272A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
De Nora SpA
Original Assignee
Oronzio de Nora Impianti Elettrochimici SpA
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Oronzio de Nora Impianti Elettrochimici SpA filed Critical Oronzio de Nora Impianti Elettrochimici SpA
Publication of GB1400053A publication Critical patent/GB1400053A/en
Expired legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C25ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25BELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
    • C25B1/00Electrolytic production of inorganic compounds or non-metals
    • C25B1/01Products
    • C25B1/34Simultaneous production of alkali metal hydroxides and chlorine, oxyacids or salts of chlorine, e.g. by chlor-alkali electrolysis
    • C25B1/46Simultaneous production of alkali metal hydroxides and chlorine, oxyacids or salts of chlorine, e.g. by chlor-alkali electrolysis in diaphragm cells
    • CCHEMISTRY; METALLURGY
    • C25ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25BELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
    • C25B9/00Cells or assemblies of cells; Constructional parts of cells; Assemblies of constructional parts, e.g. electrode-diaphragm assemblies; Process-related cell features
    • C25B9/70Assemblies comprising two or more cells
    • C25B9/73Assemblies comprising two or more cells of the filter-press type
    • C25B9/77Assemblies comprising two or more cells of the filter-press type having diaphragms

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)
  • Electrodes For Compound Or Non-Metal Manufacture (AREA)

Abstract

1400053 Diaphragm cells for electrolysis ORONZIO DE NORA IMPIANTI ELETTROCHIMICI SpA 18 Sept 1972 [22 Sept 1971 43202/72 Heading C7B An electrolysis cell comprises substantially horizontal cell units stacked one on top of the other and in bi-polar connection with each other. As shown in Fig. 1, an electrolytic cell, e.g. for electrolysis of brine is built up from frames A 1 - A 5 . Each frame (except for the top one) encloses the cathode compartment (comprising a cathode screen D 1 -D 4 and steel bottom plate C 1 -C 3 ) of one cell unit and the anode compartment (comprising an anode I) of the cell unit next below. Each anode is substantially planar, has voids therethrough (e.g. 30-60 % voids), is of valve metal (such as Ti, Ta, Zr, Mo, Nb or W) and has an electrically conductive electrocatalytic coating containing a platinum group metal or a platinum group metal oxide, e.g. one or more oxides of platinum group metals together with other protective oxides, such as oxides of Ti. Anode supports H may be Ti clad Cu. The cathode screens are covered with diaphragms (not shown) of asbestos fibre, paper or cloth. Details of the connection between the cathode of one cell unit and the anode of the next are illustrated in Figs. 1a and 1b (not shown). Frames A 1 -A 5 are of steel but the anode boxes have protective linings G of Ti, Ta, hard rubber or plastics material. There are insulating gaskets F 3 between frames. Brine is supplied through lines J, J 2 , and chlorine is removed at K, K 1 . Details of removal of H 2 and NaOH are illustrated in Figs. 3 and 4 (not shown). Fig. 9 shows a modification where frames 3, which enclose the cathode compartments are of steel and frames 4, which enclose the anode compartments, are of glass fibre reinforced polyester resin. Steel cathode screens 3a are covered by diaphragms 10 and are supported by steel ribs 3c on steel bottom plates 3d. The plates 3d are in contact with Ti or Ta back plates 6 from which anodes 5 are supported. Brine is supplied to the cell units via line 7 and balconies 8. See Fig. 9a (not shown) for details of brine supply and removal of Cl 2 , H 2 and NaOH. In operation pressure is applied to drive anolyte through the diaphragms. This is obtained either by throttling the discharge of Cl 2 or by sucking out the H 2 . Different ways of mounting anodes are illustrated in Figs. 10 and 15 (not shown). Anodes of mesh and of parallel bars are illustrated respectively in Figs 19 and 20 (not shown). The cell stacks are sloped 1 degree or 2 degrees from the horizontal to aid drainage. Fig. 10 (not shown) shows suction nozzles 3b which are used to facilitate deposition of diaphragm material and then closed by caps 3g.
GB4320272A 1971-09-22 1972-09-18 Diaphragm cells for electrolysis Expired GB1400053A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT2893871 1971-09-22

Publications (1)

Publication Number Publication Date
GB1400053A true GB1400053A (en) 1975-07-16

Family

ID=11224844

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4320272A Expired GB1400053A (en) 1971-09-22 1972-09-18 Diaphragm cells for electrolysis

Country Status (6)

Country Link
JP (2) JPS4839375A (en)
BE (1) BE788976A (en)
CA (1) CA1001114A (en)
DE (1) DE2245926A1 (en)
FR (1) FR2153399B1 (en)
GB (1) GB1400053A (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5136012Y1 (en) * 1969-05-31 1976-09-04
JPS4864519U (en) * 1971-12-02 1973-08-16
US4208865A (en) * 1978-08-03 1980-06-24 Zinser Textilmaschinen Gmbh Method and means for clearing yarn underwindings from textile spindle assemblies
DE102010021833A1 (en) * 2010-05-28 2011-12-01 Uhde Gmbh Electrode for electrolysis cell
EP3612666A4 (en) * 2017-04-20 2021-03-17 Michael Siegert Multi-purpose bio-electrical modules and procedures
DE112021002074T5 (en) * 2020-03-31 2023-01-12 Tokuyama Corporation ELECTROLYTIC ELEMENT FOR ALKALINE WATER ELECTROLYSIS AND ALKALINE WATER ELECTROLYSIS TANK

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1195871A (en) * 1967-02-10 1970-06-24 Chemnor Ag Improvements in or relating to the Manufacture of Electrodes.

Also Published As

Publication number Publication date
FR2153399A1 (en) 1973-05-04
JPS4839375A (en) 1973-06-09
JPS52115648U (en) 1977-09-02
FR2153399B1 (en) 1977-01-14
DE2245926A1 (en) 1973-04-19
CA1001114A (en) 1976-12-07
BE788976A (en) 1973-01-15

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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