EP0430830A1 - Fabrication de chlorate ou de perchlorate de métal alcalin - Google Patents

Fabrication de chlorate ou de perchlorate de métal alcalin Download PDF

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Publication number
EP0430830A1
EP0430830A1 EP19900420512 EP90420512A EP0430830A1 EP 0430830 A1 EP0430830 A1 EP 0430830A1 EP 19900420512 EP19900420512 EP 19900420512 EP 90420512 A EP90420512 A EP 90420512A EP 0430830 A1 EP0430830 A1 EP 0430830A1
Authority
EP
European Patent Office
Prior art keywords
chlorate
chloride
alkali metal
electrolysis
anolyte
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.)
Ceased
Application number
EP19900420512
Other languages
German (de)
English (en)
French (fr)
Inventor
Jean-Christophe Millet
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.)
Arkema France SA
Original Assignee
Elf Atochem SA
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 Elf Atochem SA filed Critical Elf Atochem SA
Publication of EP0430830A1 publication Critical patent/EP0430830A1/fr
Ceased legal-status Critical Current

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
    • C25B1/14—Alkali metal compounds
    • 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
    • C25B1/24—Halogens or compounds thereof
    • C25B1/26—Chlorine; Compounds thereof
    • C25B1/265—Chlorates
    • 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
    • C25B1/28—Per-compounds
    • 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
    • C25B15/00—Operating or servicing cells
    • C25B15/02—Process control or regulation
    • C25B15/023—Measuring, analysing or testing during electrolytic production
    • C25B15/025—Measuring, analysing or testing during electrolytic production of electrolyte parameters
    • C25B15/029—Concentration
    • C25B15/031—Concentration pH

Definitions

  • the present invention relates to a method of manufacturing alkali metal chlorate or perchlorate which comprises electrolysis in an aqueous medium, either of the corresponding chloride or of the corresponding chlorate, respectively.
  • chlorine-soda electrolysis It is known to commonly carry out the above electrolysis in an electrolysis cell designed and arranged as a cell which is suitable for the electrolysis of sodium chloride into chlorine and sodium hydroxide called "chlorine-soda" electrolysis, but in which the porous barrier, diaphragm or membrane, arranged intermediate between cathode and anode, is absent, so that the cell is no longer divided into a cathode compartment and an anode compartment.
  • the following relates to the manufacture of the alkali metal chlorate but, as has been said, the process of the present invention also applies to the manufacture of the alkali metal perchlorate.
  • the production of chlorate requires a plurality of electrolytic cells, first a compartmentalized cell, intended to ensure the targeted production of chlorine gas and an aqueous solution of alkali metal hydroxide, then a non-compartmentalized cell for which the anolyte of the first cell is intended and which constitutes in all circumstances the essential and indispensable element for ensuring the production of chlorate.
  • the present invention relates to a process for the manufacture of alkali metal chlorate, one step of which is the electrolysis in an aqueous medium of the chloride of said metal in the anode compartment of an electrolysis cell of the "chlorine-soda" type compartmentalized by and on the other side of a single cationic membrane with selective permeability in an anode compartment and in a cathode compartment which contains an aqueous solution of hydroxide of said alkali metal and in which hydrogen is produced, characterized in that the manufacture chlorate is ensured in a single step by said electrolysis by electrolyzing at a pH of value between about 6.2 and about 6.6, an aqueous solution of chloride containing, per liter, an amount of said chloride between about 100 g. and about 200 g. and an amount of said chlorate such that the chlorate produced can be isolated from the aqueous electrolyzed chloride solution, directly by crystallization.
  • the anode is constituted of titanium and a coating thereof based on ruthenium oxide, and the cathode is made of steel.
  • Each of the electrodes has an area equal to 0.5 dm2.
  • the catholyte consists of an aqueous solution of sodium hydroxide, the temperature of which is equal to 63 ° C. and which contains by weight 20% of sodium hydroxide.
  • the anolyte consists of an aqueous solution of sodium chloride whose temperature is equal to 63 ° C and which contains, per liter, 150 g. sodium chloride and 500 g. sodium chlorate before electrolysis.
  • the electrolysis of the aqueous sodium chloride solution is carried out in the anode compartment by applying a current intensity equal to 10 amperes to the terminals of the electrodes.
  • the uniformity of the anolyte is ensured by its forced circulation by means of a pump and at the flow rate, in the case of the present example, of 70 l./h.
  • the pH of the anolyte is adjusted to the value 6.3-6.4 by addition of OH ⁇ ions ensured by the passage using a pump of the necessary quantity of catholyte from the cathode compartment to the anode compartment.
  • the electrolysis is continued until the anolyte contains only 120 g./l. sodium chloride.
  • Example 1 is repeated this time with a Nafion 902® membrane from the company Du Pont, an anolyte temperature equal to 71 ° C. and a recirculation flow rate of said anolytic equal to 160 l./h.

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)
  • Analytical Chemistry (AREA)
  • Automation & Control Theory (AREA)
  • Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)
EP19900420512 1989-11-29 1990-11-27 Fabrication de chlorate ou de perchlorate de métal alcalin Ceased EP0430830A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8916014A FR2655061B1 (fr) 1989-11-29 1989-11-29 Fabrication de chlorate ou de perchlorate de metal alcalin.
FR8916014 1989-11-29

Publications (1)

Publication Number Publication Date
EP0430830A1 true EP0430830A1 (fr) 1991-06-05

Family

ID=9388133

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19900420512 Ceased EP0430830A1 (fr) 1989-11-29 1990-11-27 Fabrication de chlorate ou de perchlorate de métal alcalin

Country Status (17)

Country Link
US (1) US5104499A (pt)
EP (1) EP0430830A1 (pt)
JP (1) JPH03199387A (pt)
KR (1) KR930001974B1 (pt)
CN (1) CN1025442C (pt)
AU (1) AU640970B2 (pt)
BR (1) BR9006021A (pt)
CA (1) CA2030978A1 (pt)
FI (1) FI905865A (pt)
FR (1) FR2655061B1 (pt)
IL (1) IL96348A0 (pt)
NO (1) NO905141L (pt)
NZ (1) NZ236251A (pt)
PL (1) PL287988A1 (pt)
PT (1) PT96027A (pt)
YU (1) YU47527B (pt)
ZA (1) ZA909601B (pt)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1993012034A1 (en) * 1991-12-12 1993-06-24 Olin Corporation Process for producing lithium perchlorate
FR2691479B1 (fr) * 1992-05-20 1994-08-19 Atochem Elf Sa Procédé de fabrication de chlorate de métal alcalin et dispositif pour sa mise en Óoeuvre.
CN1042842C (zh) * 1993-05-31 1999-04-07 谭秉彝 电解食盐生产氯酸钠的方法
US8216443B2 (en) 2002-07-05 2012-07-10 Akzo Nobel N.V. Process for producing alkali metal chlorate
US20050011753A1 (en) * 2003-06-23 2005-01-20 Jackson John R. Low energy chlorate electrolytic cell and process
US9090979B2 (en) 2009-03-26 2015-07-28 Ihi Corporation Method and apparatus for manufacturing perchlorate
US20110226634A1 (en) * 2009-06-19 2011-09-22 Sai Bhavaraju Bismuth metal oxide pyrochlores as electrode materials for electrolytic ozone and perchlorate generation
JP5387250B2 (ja) * 2009-09-09 2014-01-15 株式会社Ｉｈｉ 過塩素酸塩の製造方法及び製造装置
JP5392158B2 (ja) * 2010-03-19 2014-01-22 株式会社Ｉｈｉ 過塩素酸塩の製造装置および製造方法
CN106757132A (zh) * 2017-01-12 2017-05-31 精迪敏健康医疗科技有限公司 电解设备
CN113088981B (zh) * 2021-04-10 2022-06-24 贵州丝域环能科技有限公司 一种不锈钢酸洗钝化液的制备、处理及再生方法

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3878072A (en) * 1973-11-01 1975-04-15 Hooker Chemicals Plastics Corp Electrolytic method for the manufacture of chlorates
US4627899A (en) * 1985-02-15 1986-12-09 The United States Of America As Represented By The Secretary Of The Interior Electrolytic cell and methods combining electrowinning and electrochemical reactions employing a membrane or diaphragm

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL129924C (pt) * 1964-10-12 1970-06-15
US3518173A (en) * 1967-12-26 1970-06-30 George J Crane Continuous manufacture of chlorates and perchlorates
US3897320A (en) * 1973-11-01 1975-07-29 Hooker Chemicals Plastics Corp Electrolytic manufacture of chlorates, using a plurality of electrolytic cells
JPS5815000B2 (ja) * 1976-08-11 1983-03-23 ユナイテツド ニユ−クリア インダストリ−ズ インコ−ポレ−テツド 放射性廃棄物処理方法
DE3447597C1 (de) * 1984-12-28 1986-08-28 Karl 7298 Loßburg Hehl Spritzgiesseinheit fuer eine Kunststoff-Spritzgiessmaschine
JPS62219348A (ja) * 1986-03-20 1987-09-26 Fuji Photo Film Co Ltd 光磁気記録媒体
FR2638766B1 (fr) * 1988-11-09 1990-12-14 Atochem Procede continu de fabrication de perchlorate de metal alcalin

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3878072A (en) * 1973-11-01 1975-04-15 Hooker Chemicals Plastics Corp Electrolytic method for the manufacture of chlorates
US4627899A (en) * 1985-02-15 1986-12-09 The United States Of America As Represented By The Secretary Of The Interior Electrolytic cell and methods combining electrowinning and electrochemical reactions employing a membrane or diaphragm

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
EXTENDED ABSTRACTS, FALL MEETING, Honolulu, Hawaii, 18-23 octobre 1987, vol. 87-2, pages 1629-1630, abstract no. 1177; A. TASAKA et al.: "Apparent activation energies for electrochemical chlorate-formation reaction on DSA-type electrode" *

Also Published As

Publication number Publication date
BR9006021A (pt) 1991-09-24
KR930001974B1 (ko) 1993-03-20
ZA909601B (en) 1991-09-25
PT96027A (pt) 1991-09-13
FI905865A (fi) 1991-05-30
NO905141L (no) 1991-05-30
JPH03199387A (ja) 1991-08-30
CA2030978A1 (fr) 1991-05-30
PL287988A1 (en) 1992-01-27
CN1025442C (zh) 1994-07-13
FI905865A0 (fi) 1990-11-28
CN1052152A (zh) 1991-06-12
KR910009963A (ko) 1991-06-28
NZ236251A (en) 1992-06-25
IL96348A0 (en) 1991-08-16
NO905141D0 (no) 1990-11-28
AU6706890A (en) 1991-06-06
YU47527B (sh) 1995-10-03
FR2655061B1 (fr) 1993-12-10
YU225790A (sh) 1993-05-28
AU640970B2 (en) 1993-09-09
FR2655061A1 (fr) 1991-05-31
US5104499A (en) 1992-04-14

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