EP0020887A1 - Appareil d'électrolyse pour la production de chlore à partir de solutions aqueuses d'halogénures de métaux alcalins - Google Patents

Appareil d'électrolyse pour la production de chlore à partir de solutions aqueuses d'halogénures de métaux alcalins Download PDF

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Publication number
EP0020887A1
EP0020887A1 EP80101798A EP80101798A EP0020887A1 EP 0020887 A1 EP0020887 A1 EP 0020887A1 EP 80101798 A EP80101798 A EP 80101798A EP 80101798 A EP80101798 A EP 80101798A EP 0020887 A1 EP0020887 A1 EP 0020887A1
Authority
EP
European Patent Office
Prior art keywords
shells
electrolysis
electrolysis apparatus
pressure
electrodes
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.)
Granted
Application number
EP80101798A
Other languages
German (de)
English (en)
Other versions
EP0020887B1 (fr
Inventor
Werner Bender
Dieter Dr. Bergner
Kurt Hannesen
Wolfgang Müller
Wilfried Schulte
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.)
Hoechst AG
Original Assignee
Hoechst AG
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 Hoechst AG filed Critical Hoechst AG
Priority to AT80101798T priority Critical patent/ATE7802T1/de
Publication of EP0020887A1 publication Critical patent/EP0020887A1/fr
Application granted granted Critical
Publication of EP0020887B1 publication Critical patent/EP0020887B1/fr
Expired legal-status Critical Current

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    • 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
    • C25B9/00—Cells or assemblies of cells; Constructional parts of cells; Assemblies of constructional parts, e.g. electrode-diaphragm assemblies; Process-related cell features
    • C25B9/70—Assemblies comprising two or more cells
    • C25B9/73—Assemblies comprising two or more cells of the filter-press type

Definitions

  • the invention relates to an electrolysis apparatus for the production of chlorine from aqueous alkali chloride solution under pressure, in which the anode and cathode compartments are separated by a partition, e.g. a diaphragm or an ion exchange membrane are separated from each other.
  • a partition e.g. a diaphragm or an ion exchange membrane
  • an electrolysis apparatus consisting of individual electrolysis cells, in which the cells are also operable as a single element.
  • the individual electrolysis cell of this electrolysis apparatus is characterized in that the housing consists of two half-shells, the electrodes are connected to the half-shells by means of electrically conductive bolts, the bolts projecting through the wall of the half-shells and on their protruding end face current leads and devices for compressing the current leads , Half-shells, electrodes and dividing wall rest and the dividing wall between electrically insulating spacers which are arranged in the extension of the bolts on the electrically active and side of the electrodes / is clamped between the edges of the half-shells by means of sealing elements
  • the housings have openings through which the current leads are led to the electrodes, which is disadvantageous because leaks can occur at these ducts, which can only be eliminated by decommissioning the entire electrolysis apparatus and replacing the leaky element. Electrolysis processes under pressure cannot be carried out.
  • the object is therefore to provide an electrolysis apparatus that does not have the disadvantages shown above having.
  • the electrolysis apparatus should be constructed from individual cells, the individual cells of which are functional on their own. In the event of a repair, defective cells should be easily removed or replaced when full, without the need to disassemble the entire electrolysis apparatus and without interrupting operation in the long term.
  • the electrolysis apparatus should be pressure-resistant for pressures of more than 10 bar.
  • an electrolysis apparatus for the production of chlorine from aqueous alkali chloride solution, which has at least one electrolysis cell, the anode and cathode of which are separated from one another by a partition, arranged in a housing made of two half-shells, the housing having devices for supplying the electrolysis starting materials and is provided for discharging the electrolysis products, and the partition is clamped by means of sealing elements between the edges of the half-shells and is held between power transmission elements made of electrically non-conductive material, each extending up to the electrodes, which is characterized in that the electrodes are connected by spacers attached to the Half-shells with an essentially circular cross-section are fastened and mechanically and electrically conductively connected via their edges to the half-shells, the half-shells of adjacent cells are supported flat against one another, and the end stands half shells of the electrolysis apparatus are supported by pressure-absorbing organs.
  • Plates connected by tie rods and covering the terminal half-shells can be arranged as pressure-absorbing organs.
  • the plates can also be provided with hydraulic devices.
  • the cathodes can be made of iron, cobalt, nickel or chromium or one of their alloys and the anodes can be made of titanium, niobium or tantalum or an alloy of these metals or of a metal or oxide ceramic material.
  • the anodes are provided with an electrically conductive, catalytically active coating which contains metals or compounds from the group of platinum metals.
  • the gases formed during electrolysis can easily enter the space behind the electrodes.
  • the gases removal from the electrode gap to reach a reduction of gas bubble resistance between the E Lek trodes and thus a reduction of the cell voltage.
  • the half-shells on the cathode side can be made of iron or iron alloys. If cathodes and cathode-side half-shells are to be welded to one another, they preferably consist of the same material, preferably steel.
  • the anode-side half-shell must consist of a chlorine-resistant material such as titanium, niobium or tantalum, an alloy of these metals, Hastelloy or a metal or oxide ceramic material. If the half-shell and anode are to be joined together by welding, the same material, preferably titanium, is selected for both parts.
  • Half-shell and electrodes can also be firmly connected to each other by screwing. In this case, half-shells and electrodes can be made of different materials.
  • Membranes with terminal sulfonamide groups (-S0 3 NHR) are also used as ion exchange groups.
  • the equivalent weights of such ion exchangers are between 800 and 1600, preferably between 1100 and 1500.
  • the ion exchange membrane is usually reinforced with a support fabric made of polytetrafluoroethylene.
  • these ion exchange membranes prevent the mixing of hydrogen and chlorine, but because of their selective permeability they allow the passage of alkali metal ions into the cathode compartment. They largely prevent the transition of halide into the cathode compartment and the passage of hydroxyl ions into the anode compartment. This results in a practically salt-free lye, whereas the salt must first be removed from the catholyte of the diaphragm cells in a complex process.
  • the ion exchange membrane dimension-stable partition walls, which are also more resistant to the aggressive media of alkali metal chloride electrolysis and therefore have a longer service life than asbestos diaphragms.
  • the electrolysis apparatus can consist of an electrolysis cell, but also of a multiplicity of cells connected in series, the electrical contact between adjacent cells taking place directly via the contacting half-shells of adjacent electrolysis cells or via the electrically conductive force transmission elements.
  • the cell temperature can be increased, which is advantageous because at a higher temperature the electrical resistance of the electrolytes decreases on the anode and on the cathode side.
  • the gas volumes also become correspondingly smaller, so that a comparatively large power line cross section is available.
  • the energy consumption based on the ton of chlorine generated, is lower.
  • less water with increased pressure despite the simultaneously increased temperature the gases produced are carried out of the cell, which reduces the drying costs.
  • the pressure is chosen high enough, at least about 8 bar, the chlorine produced can be liquefied without the use of cold and / or compression. It is also possible to degas the anolyte at atmospheric pressure if a sufficient temperature gradient is available. Last but not least, after-treatment of the cell products at higher pressure results in smaller apparatus dimensions, and the cells can be operated with a comparatively higher load.
  • the electrolysis apparatus has at least one electrolysis cell 4.
  • Each individual electrolytic cell 4 essentially consists of the two flange parts 1 and 2, between which the membrane 14 is sealed, and which are held together with the screws 6.
  • the flange parts 1 and 2 are electrically insulated from one another, for example by means of insulating bushes 3.
  • the half-shells 9 and 11 are inserted into the flanges 1 and 2, which line the flanges 1 and 2 from the inside and with their brims over the sealing surfaces of the flanges 1 and 2 have moved away.
  • the sealing rings 13 and 15 provide a seal against the membrane 14.
  • the anode 12 and the cathode 16 are fastened to the half-shells 9 and 11.
  • the bottoms of the half-shells 9 and 11 of adjacent cells press against one another under the internal pressure of the cells; they can be separated from one another by a film 10 (plastic or metal). All-round beads in the half-shells 9 and 11 create a membrane like behavior (not shown).
  • the spacers 17 and 18 (electrically conductive bolts), which are used for power supply and power transmission, have on their front side in the interior of the cell power transmission elements 19 and 20, for example disks of insulating material, between which the membrane 14 is clamped.
  • the anode 12 and the cathode 16 are fastened to the spacers 17 and 18, respectively.
  • the anolyte and the catholyte are supplied and discharged via lines 21 which are guided radially through the flanges 1 and 2.
  • the terminal half-shells of the electrolysis apparatus are supported by pressure-absorbing organs.
  • the organs consist of the two plates 7 and the tie rods 8. Instead of the tie rods, the two plates 7 can be connected to hydraulic devices (not shown).
  • the outward-pointing half-shell 9 or 11 of the last cell 4 is supported against the internal pressure of the cell by the plate 7, which may snap into the flange 2 or 1 with a spring 22.
  • the two end plates 7 are pulled together via the tie rods 8, so that the liquid pressure on the half-shells is compensated for via the tie rods. They rest on foot elements 5.
  • threaded bolts 23 which exert pressure on the spacers 17 and 18 when screwed in.
  • the threaded bolts 23 are connected to the power supply lines 24 by means of appropriate devices 25.
  • the supply cables (not shown) are connected to these power supply lines 24.
  • the individual electrolysis cells 4 are pressed together with the pressure-absorbing member and then the threaded bolts 23 are tightened, so that the electrical contacts are made through the spacers 17 and 18 through all cells.
  • the individual electrolytic cells have an essentially circular cross-section, i.e. the cross section in the electrode plane is circular, elliptical, oval or the like.

Landscapes

  • Chemical & Material Sciences (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)
  • Electrodes For Compound Or Non-Metal Manufacture (AREA)
  • Apparatus For Disinfection Or Sterilisation (AREA)
  • Discharge Lamp (AREA)
  • Organic Insulating Materials (AREA)
EP80101798A 1979-04-12 1980-04-03 Appareil d'électrolyse pour la production de chlore à partir de solutions aqueuses d'halogénures de métaux alcalins Expired EP0020887B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT80101798T ATE7802T1 (de) 1979-04-12 1980-04-03 Elektrolyseapparat zur herstellung von chlor aus waesserigen alkalichloridloesungen.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2914869 1979-04-12
DE19792914869 DE2914869A1 (de) 1979-04-12 1979-04-12 Elektrolyseapparat

Publications (2)

Publication Number Publication Date
EP0020887A1 true EP0020887A1 (fr) 1981-01-07
EP0020887B1 EP0020887B1 (fr) 1984-06-06

Family

ID=6068171

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80101798A Expired EP0020887B1 (fr) 1979-04-12 1980-04-03 Appareil d'électrolyse pour la production de chlore à partir de solutions aqueuses d'halogénures de métaux alcalins

Country Status (14)

Country Link
US (1) US4309264A (fr)
EP (1) EP0020887B1 (fr)
JP (1) JPS55141583A (fr)
AR (1) AR226057A1 (fr)
AT (1) ATE7802T1 (fr)
AU (1) AU532943B2 (fr)
BR (1) BR8002251A (fr)
CA (1) CA1145707A (fr)
DE (2) DE2914869A1 (fr)
ES (1) ES490265A0 (fr)
FI (1) FI68089C (fr)
IN (1) IN152210B (fr)
NO (1) NO153580C (fr)
ZA (1) ZA802172B (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0172495A2 (fr) * 1984-08-07 1986-02-26 Asahi Kasei Kogyo Kabushiki Kaisha Electrolyseur à cellules multiples
FR2647468A1 (fr) * 1989-05-29 1990-11-30 Solvay Chassis pour electrolyseur du type filtre-presse et electrolyseurs du type filtre-presse
EP0456295A1 (fr) * 1990-05-09 1991-11-13 Metallgesellschaft Aktiengesellschaft Electrolyseur
EP0523669A1 (fr) * 1991-07-16 1993-01-20 Hoechst Aktiengesellschaft Electrolyseur
DE4212678A1 (de) * 1992-04-16 1993-10-21 Heraeus Elektrochemie Elektrochemische Membran-Zelle
EP0608028A1 (fr) * 1993-01-22 1994-07-27 SOLVAY (Société Anonyme) Electrolyseur pour la production d'un gaz
EP0661389A1 (fr) * 1993-06-30 1995-07-05 Eltech Systems Corporation Electrolyseur du type filtre-presse

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4923582A (en) * 1982-12-27 1990-05-08 Eltech Systems Corporation Monopolar, bipolar and/or hybrid memberane cell
US4738763A (en) * 1983-12-07 1988-04-19 Eltech Systems Corporation Monopolar, bipolar and/or hybrid membrane cell
EP0130215B1 (fr) * 1982-12-27 1989-04-26 Eltech Systems Corporation Cellule a membrane monopolaire, bipolaire et/ou hybride
GB8319492D0 (en) * 1983-07-19 1983-08-17 Ici Plc Assembling filter press type electrolytic cell
DE3420483A1 (de) * 1984-06-01 1985-12-05 Hoechst Ag, 6230 Frankfurt Bipolarer elektrolyseapparat mit gasdiffusionskathode
US4698143A (en) * 1986-06-25 1987-10-06 The Dow Chemical Company Structural frame for an electrochemical cell
JPH06108279A (ja) * 1992-09-28 1994-04-19 Tadahiro Omi 水素酸素発生装置
US5340457A (en) * 1993-04-29 1994-08-23 Olin Corporation Electrolytic cell
JP3035483B2 (ja) * 1995-11-27 2000-04-24 スガ試験機株式会社 酸素・水素電解ガス発生装置
DE19816334A1 (de) * 1998-04-11 1999-10-14 Krupp Uhde Gmbh Elektrolyseapparat zur Herstellung von Halogengasen
US20040108204A1 (en) * 1999-05-10 2004-06-10 Ineos Chlor Limited Gasket with curved configuration at peripheral edge
US6761808B1 (en) * 1999-05-10 2004-07-13 Ineos Chlor Limited Electrode structure
CN1525856A (zh) * 2001-05-11 2004-09-01 三菱制药株式会社 含吡唑啉酮衍生物的稳定的高浓度注射剂
DE102005003527A1 (de) * 2005-01-25 2006-07-27 Uhdenora S.P.A. Elektrolysezelle mit erweiterter aktiver Membranfläche

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2448187A1 (de) * 1974-10-09 1976-04-22 Hooker Chemicals Plastics Corp Elektrolysezelle
DE2538414A1 (de) * 1975-08-29 1977-03-10 Hoechst Ag Elektrolyseapparat
GB1523045A (en) * 1975-06-04 1978-08-31 Asahi Chemical Ind Multi-electrode electrolytic cell

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1263314A (en) * 1917-12-24 1918-04-16 Philip A Emanuel Apparatus for electrolysis.
US2012046A (en) * 1930-01-31 1935-08-20 Nat Aniline & Chem Co Inc Electrolytic process and apparatus
ES450933A1 (es) * 1975-08-29 1977-09-01 Hoechst Ag Aparato para electrolisis.
US4017375A (en) * 1975-12-15 1977-04-12 Diamond Shamrock Corporation Bipolar electrode for an electrolytic cell
US4137144A (en) * 1976-03-19 1979-01-30 Hooker Chemicals & Plastics Corp. Hollow bipolar electrolytic cell anode-cathode connecting device
US4056458A (en) * 1976-08-26 1977-11-01 Diamond Shamrock Corporation Monopolar membrane electrolytic cell
US4108752A (en) * 1977-05-31 1978-08-22 Diamond Shamrock Corporation Electrolytic cell bank having spring loaded intercell connectors

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2448187A1 (de) * 1974-10-09 1976-04-22 Hooker Chemicals Plastics Corp Elektrolysezelle
GB1523045A (en) * 1975-06-04 1978-08-31 Asahi Chemical Ind Multi-electrode electrolytic cell
DE2538414A1 (de) * 1975-08-29 1977-03-10 Hoechst Ag Elektrolyseapparat

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0172495A2 (fr) * 1984-08-07 1986-02-26 Asahi Kasei Kogyo Kabushiki Kaisha Electrolyseur à cellules multiples
EP0172495A3 (fr) * 1984-08-07 1988-09-07 Asahi Kasei Kogyo Kabushiki Kaisha Electrolyseur à cellules multiples
FR2647468A1 (fr) * 1989-05-29 1990-11-30 Solvay Chassis pour electrolyseur du type filtre-presse et electrolyseurs du type filtre-presse
EP0400712A1 (fr) * 1989-05-29 1990-12-05 SOLVAY (Société Anonyme) Châssis pour électrolyseur du type filtre-presse et électrolyseurs du type filtre-presse
EP0456295A1 (fr) * 1990-05-09 1991-11-13 Metallgesellschaft Aktiengesellschaft Electrolyseur
EP0523669A1 (fr) * 1991-07-16 1993-01-20 Hoechst Aktiengesellschaft Electrolyseur
DE4212678A1 (de) * 1992-04-16 1993-10-21 Heraeus Elektrochemie Elektrochemische Membran-Zelle
EP0608028A1 (fr) * 1993-01-22 1994-07-27 SOLVAY (Société Anonyme) Electrolyseur pour la production d'un gaz
US5425864A (en) * 1993-01-22 1995-06-20 Solvay (Societe Anonyme) Electrolyser for the production of a gas
EP0661389A1 (fr) * 1993-06-30 1995-07-05 Eltech Systems Corporation Electrolyseur du type filtre-presse

Also Published As

Publication number Publication date
ES8100680A1 (es) 1980-12-01
NO801060L (no) 1980-10-13
NO153580B (no) 1986-01-06
DE3068097D1 (en) 1984-07-12
EP0020887B1 (fr) 1984-06-06
DE2914869A1 (de) 1980-10-30
BR8002251A (pt) 1980-12-02
AR226057A1 (es) 1982-05-31
JPS55141583A (en) 1980-11-05
US4309264A (en) 1982-01-05
FI801145A (fi) 1980-10-13
IN152210B (fr) 1983-11-19
FI68089C (fi) 1985-07-10
AU5737880A (en) 1980-10-16
ATE7802T1 (de) 1984-06-15
ZA802172B (en) 1981-05-27
CA1145707A (fr) 1983-05-03
AU532943B2 (en) 1983-10-20
ES490265A0 (es) 1980-12-01
FI68089B (fi) 1985-03-29
NO153580C (no) 1986-04-16

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