US3436324A - Corrosion-endangered parts of apparatus used in alkali metal chloride electrolysis having protective covering of post-chlorinated pvc - Google Patents

Corrosion-endangered parts of apparatus used in alkali metal chloride electrolysis having protective covering of post-chlorinated pvc Download PDF

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Publication number
US3436324A
US3436324A US548028A US3436324DA US3436324A US 3436324 A US3436324 A US 3436324A US 548028 A US548028 A US 548028A US 3436324D A US3436324D A US 3436324DA US 3436324 A US3436324 A US 3436324A
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US
United States
Prior art keywords
post
alkali metal
metal chloride
electrolysis
corrosion
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Expired - Lifetime
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US548028A
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English (en)
Inventor
Karl Hass
Walter Kolhagen
Gunther Czehovsky
Hans-Ewald Konermann
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Dynamit Nobel AG
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Dynamit Nobel AG
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Publication date
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    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D127/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Coating compositions based on derivatives of such polymers
    • C09D127/22—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Coating compositions based on derivatives of such polymers modified by chemical after-treatment
    • C09D127/24—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Coating compositions based on derivatives of such polymers modified by chemical after-treatment halogenated
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D9/00—Electrolytic coating other than with metals
    • 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
    • Y10S220/00—Receptacles
    • Y10S220/917—Corrosion resistant container

Definitions

  • Ceramic material generally offers quite good chemical resistance under the conditions of alkali metal chloride States Patent O percent, for example 64-70 wt. percent, and in which about to 90 wt. percent and preferably about to wt. percent of the additional chlorine introduced by post-chlorination is in 1,2-dichloroethylene units, can be used advantageously as coating material for corrosion-endangered parts of apparatus used in alkali metal chloride electrolysis.
  • the said coatings are furthermore susceptible of welding and cementing. They can also be cut and machined, even after application.
  • the coating material of the invention may contain the conventional substances to improve workability.
  • the semiproducts which are used for the manufacture of the coatings can be made by plastics manufacturing methods of the prior art.
  • Example 1 Used as protective tubing for the conductors connected to the graphite anodes of equipment used in sodium chloride electrolysis.
  • the conductors of the graphite anodes were covered with pieces of plastic tubing with a 4 mm. wall thickness and a 40 mm. outside diameter, and were exposed to the eliects of a sodium chloride electrolysis at the stated temperatures and times.
  • Polyvinyl chloride (post-chlorinated) 155 83 +0. 2% Surface uniformly smooth, unaltered. .d0 143 85 +0. 2% Do.
  • the post-chlorinated polyvinyl chloride used in Example 1 was produced as follows: A suspension PVC with a K value of 68 was brought up by post-chlorination to a chlorine content of 67.2%. 69% of the chlorine is disposed in 1,2-dichloroethylene units (the 1,2-dichloroethylene unit content was determined by measurement of the nuclear resonance spectrum). After the addition of 3 wt. percent of Ba-Cd laurate, 2 wt. percent of a lubricant commercially obtainable under the name of E-Wax and 0.5 wt. percent of calcium stearate, the material was extruded at C. into tubes of the specified size.
  • the post-chlorinated PVC used in Example 2 was probility of the described material is superior to other known lodged as follows:
  • a suspension PVC with a K value (H. 15 types. Fikentscher Cellulosechernie, 13, 1932, p. 58) of 60 was The invention finds application for all processes wherein brought up by post-chlorination to a chlorine content of alkali chlorides are electrolyzed, and chlorine is produced. 65.8%. 75.5% of the chlorine was attached in units of While the invention has been described with respect to 1,2-dichloroethylene (the 1,2-dichloroethylene unit conparticular embodiments thereof, these embodiments are tent was determined by measuring the nuclear resonance 2O merely representative and do not serve to determine the spectrum).
  • the invention provides an electrolysis cell for comprising a corrosive reaction environment including a electrolysis of alkali metal chloride comprising equipment tank for holding an alkali metal chloride bath for elecincluding a tank for holding an alkali metal chloride bath trolyzing, electrodes disposed in the tank, conduit for confor electrolyzing, electrodes disposed in the tank, conduit veyance of electrolysis material, and conductors connected for conveyance of electrolysis material, and conductors to said electrodes, at least part of said equipment being connected to said electrodes, and an alkali metal chloride susceptible to corrosion and having a protective covering bath for electrolysis in the tank.
  • FIG. 1 is a schematic representation of an electrolysis ing in 1,2-dichloroethylene units. diaphragm cell according to the invention. 3.
  • Electrolysis cell according to claim 2 wherein the A tank 1 is provided with a protective covering 2, and is cell is lined with said protective covering. outfitted with lid 10, which is provided with a protective 4. Electrolysis cell according to claim 3, wherein said covering 12. A sodium chloride brine bath 20 is contained conductors are protected with said protective covering. within the tank, and anode 4 and cathode 5 are immersed 5. Electrolysis cell according to claim 4, wherein said in the tank. The cathode is covered by a diaphragm 6. conduit is lined with said protective covering. The anode and the cathode are serviced by conductors in- 6. Electrolysis cell according to claim 2, wherein said snlated by a protective covering according to the invenconductors are protected wtih said protective covering.
  • said equipment including a tank holding the duit 16 is provided for withdrawal of chlorine from the alkali metal chloride bath, electrodes disposed in the tank, cell, and is provided with a protective lining 17; similarly, conduit for conveyance of electrolysis material, and conconduit 8 is provided for withdrawing hydrogen from the ductors connected to said electrodes, at least part of said cathode, and is also provided with a protective lining (not equipment being susceptible to corrosion and having a proshown).
  • the various protective coverings and linings mentective covering consisting essentially of post-chlorinated tioned are of post-chlorinated polyvinyl chloride according polyvinyl chloride polymer. to the invention.
  • FIG. 2 is a schematic representation of an electrolysis References Cited mercury cell according to the invention.
  • UNITED STATES PATENTS The description, apart from constructural differences, corresponds with that given for FIG. 1, except that 4 g g -gg being the graphite anode and 5 the mercury cathode. 21 is for the introduction of the brine.
  • OTHER REFERENCES The post-chlorinated polyvinyl chloride used in the in- Evans, Tank Linings, Metal Industry, July 29, 1949, pp. vention has a chlorine content of between about 64 and 86-88. wt. percent and in which about 50 to 90 wt. percent Evans, I.E.T.S., vol. 24, pp. 129-143, 1948-49.

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Electrochemistry (AREA)
  • Metallurgy (AREA)
  • General Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
  • Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Paints Or Removers (AREA)
US548028A 1965-04-30 1966-05-02 Corrosion-endangered parts of apparatus used in alkali metal chloride electrolysis having protective covering of post-chlorinated pvc Expired - Lifetime US3436324A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DED47153A DE1285650B (de) 1965-04-30 1965-04-30 Herstellung von UEberzuegen auf korrosionsgefaehrdeten Apparateteilen der Chloralkalielektrolyse

Publications (1)

Publication Number Publication Date
US3436324A true US3436324A (en) 1969-04-01

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ID=7050237

Family Applications (1)

Application Number Title Priority Date Filing Date
US548028A Expired - Lifetime US3436324A (en) 1965-04-30 1966-05-02 Corrosion-endangered parts of apparatus used in alkali metal chloride electrolysis having protective covering of post-chlorinated pvc

Country Status (12)

Country Link
US (1) US3436324A (enrdf_load_stackoverflow)
JP (1) JPS509746B1 (enrdf_load_stackoverflow)
AT (1) AT260283B (enrdf_load_stackoverflow)
BE (1) BE679864A (enrdf_load_stackoverflow)
CH (1) CH466241A (enrdf_load_stackoverflow)
DE (1) DE1285650B (enrdf_load_stackoverflow)
ES (1) ES326095A1 (enrdf_load_stackoverflow)
FI (1) FI44264C (enrdf_load_stackoverflow)
FR (1) FR1478061A (enrdf_load_stackoverflow)
GB (1) GB1090090A (enrdf_load_stackoverflow)
NL (1) NL6605817A (enrdf_load_stackoverflow)
SE (1) SE323758B (enrdf_load_stackoverflow)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3623629A (en) * 1969-02-27 1971-11-30 John A Hendershot Tank liner
US3648886A (en) * 1970-05-11 1972-03-14 William L Pringle Fuel tank assembly
US3857773A (en) * 1973-04-05 1974-12-31 Ppg Industries Inc Suppression of crevice corrosion in gasketed titanium crevices by the use of rubber compound gaskets substantially free of calcium
US3911565A (en) * 1974-05-24 1975-10-14 Ppg Industries Inc Method of protecting current leads in electrolytic cells
WO1986006705A1 (en) * 1985-05-17 1986-11-20 J.C. Schumacher Company Disposable chemical container
US5718929A (en) * 1995-03-27 1998-02-17 Rogerson; L. Keith Rotational molding apparatus having fluid cooled arms

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2764542A (en) * 1950-08-04 1956-09-25 British Aluminium Co Ltd Apparatus for continuous electrolytic treatment of articles
US2989450A (en) * 1958-01-30 1961-06-20 Dow Chemical Co Preparation of alkali metal halides

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL227527A (enrdf_load_stackoverflow) * 1956-03-03

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2764542A (en) * 1950-08-04 1956-09-25 British Aluminium Co Ltd Apparatus for continuous electrolytic treatment of articles
US2989450A (en) * 1958-01-30 1961-06-20 Dow Chemical Co Preparation of alkali metal halides

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3623629A (en) * 1969-02-27 1971-11-30 John A Hendershot Tank liner
US3648886A (en) * 1970-05-11 1972-03-14 William L Pringle Fuel tank assembly
US3857773A (en) * 1973-04-05 1974-12-31 Ppg Industries Inc Suppression of crevice corrosion in gasketed titanium crevices by the use of rubber compound gaskets substantially free of calcium
US3911565A (en) * 1974-05-24 1975-10-14 Ppg Industries Inc Method of protecting current leads in electrolytic cells
WO1986006705A1 (en) * 1985-05-17 1986-11-20 J.C. Schumacher Company Disposable chemical container
JPS62503045A (ja) * 1985-05-17 1987-12-03 エアー・プロダクツ・アンド・ケミカルズ・インコーポレーテッド 使い捨て化学薬品容器およびその製造方法
JPH0689878B2 (ja) 1985-05-17 1994-11-14 エアー・プロダクツ・アンド・ケミカルズ・インコーポレーテッド 使い捨て化学薬品容器およびその製造方法
US5718929A (en) * 1995-03-27 1998-02-17 Rogerson; L. Keith Rotational molding apparatus having fluid cooled arms
US5728423A (en) * 1995-03-27 1998-03-17 Rogerson; L. Keith Method and apparatus for internally and externally coating enclosed metallic structures

Also Published As

Publication number Publication date
NL6605817A (enrdf_load_stackoverflow) 1966-10-31
DE1285650B (de) 1968-12-19
FI44264B (enrdf_load_stackoverflow) 1971-06-30
SE323758B (enrdf_load_stackoverflow) 1970-05-11
AT260283B (de) 1968-02-26
ES326095A1 (es) 1967-07-01
JPS509746B1 (enrdf_load_stackoverflow) 1975-04-15
FI44264C (fi) 1971-10-11
BE679864A (enrdf_load_stackoverflow) 1966-10-21
FR1478061A (fr) 1967-04-21
CH466241A (de) 1968-12-15
GB1090090A (en) 1967-11-08

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