WO1993025470A1 - Method of producing chlorine dioxide - Google Patents
Method of producing chlorine dioxide Download PDFInfo
- Publication number
- WO1993025470A1 WO1993025470A1 PCT/SE1993/000472 SE9300472W WO9325470A1 WO 1993025470 A1 WO1993025470 A1 WO 1993025470A1 SE 9300472 W SE9300472 W SE 9300472W WO 9325470 A1 WO9325470 A1 WO 9325470A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- chlorine dioxide
- alkali metal
- chloric acid
- reaction
- metal chlorate
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B11/00—Oxides or oxyacids of halogens; Salts thereof
- C01B11/02—Oxides of chlorine
- C01B11/022—Chlorine dioxide (ClO2)
- C01B11/023—Preparation from chlorites or chlorates
- C01B11/026—Preparation from chlorites or chlorates from chlorate ions in the presence of a peroxidic compound, e.g. hydrogen peroxide, ozone, peroxysulfates
Definitions
- Chlorine dioxide can also be produced from chloric acid (HC10 3 ) , involving the advantage that no sodium sulfate by ⁇ product is produced.
- a draw back of using methanol as a reducing agent is the low reaction rate at low acidities.
- the electrolyses of chlorate to chloric acid can be run to a high degree of conversion which, however, has been found to decrease the current efficiency.
- Production of chlorine dioxide at low acidities requires high methanol concentration.
- the amount of H + in the reaction medium exceeds the amount of H + supplied with mineral acids other than chloric acid.
- the reaction is preferably performed in the substantial absence of sulfuric acid, and most preferably in the substantial absence of any mineral acid other than chloric acid, thus avoiding the formation of any salt by-products. Unreacted alkali metal chlorate is withdrawn from the reaction medium and can be reused.
- the solution supplied to the reaction medium preferably contains from about 10 to about 40% by weight, most preferably from about 15 to about 25% by weight of chloric acid.
- a particularly preferred embodiment of the invention relates to an integrated process which comprises electrolysing an aqueous solution of alkali metal chlorate so to obtain a solution containing chloric acid and alkali metal chlorate, feeding the solution to the reaction zone in a chlorine dioxide reactor, producing chlorine dioxide by reacting the chloric acid with hydrogen peroxide as a reducing agent, withdrawing the unreacted alkali metal chlorate from the reaction zone, preferably in the form of an aqueous solution, and recycling it to the electrochemical cell, which cell preferably also is supplied with fresh alkali metal chlorate.
- the fresh alkali metal chlorate can be added to the recycling stream of chlorate or directly to the electrochemical cell.
- the first solution contained 6 M C10 3 " and 2 M H +
- the second solution contained 0.3 M H 2 0 2
- the first solution contained 6 M C10 3 " and 3 M H +
- the second solution contained 0.3 M H 2 0 2 .
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Inorganic Chemistry (AREA)
- Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Epoxy Compounds (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BR9306505A BR9306505A (en) | 1992-06-09 | 1993-05-27 | Chlorine dioxide production process |
EP93913716A EP0644853B2 (en) | 1992-06-09 | 1993-05-27 | Method of producing chlorine dioxide |
DE69327650T DE69327650D1 (en) | 1992-06-09 | 1993-05-27 | METHOD FOR PRODUCING CHLORDIOXIDE |
FI945747A FI112352B (en) | 1992-06-09 | 1994-12-07 | Process for the production of chlorine dioxide |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US895,634 | 1992-06-09 | ||
US07/895,634 US5486344A (en) | 1992-06-09 | 1992-06-09 | Method of producing chlorine dioxide |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1993025470A1 true WO1993025470A1 (en) | 1993-12-23 |
Family
ID=25404803
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/SE1993/000472 WO1993025470A1 (en) | 1992-06-09 | 1993-05-27 | Method of producing chlorine dioxide |
Country Status (9)
Country | Link |
---|---|
US (1) | US5486344A (en) |
EP (1) | EP0644853B2 (en) |
JP (1) | JP2819066B2 (en) |
BR (1) | BR9306505A (en) |
CA (1) | CA2076904C (en) |
DE (1) | DE69327650D1 (en) |
FI (1) | FI112352B (en) |
WO (1) | WO1993025470A1 (en) |
ZA (1) | ZA933999B (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AU652320B1 (en) * | 1993-02-26 | 1994-08-18 | Eka Nobel Ab | Process of producing chlorine dioxide |
US5478446A (en) * | 1993-07-02 | 1995-12-26 | Eka Nobel Inc. | Electrochemical process |
US5858322A (en) * | 1994-08-18 | 1999-01-12 | Eka Nobel Inc. | Process of producing chlorine dioxide |
WO2002049958A1 (en) * | 2000-12-21 | 2002-06-27 | Superior Plus Inc. | Hydrogen peroxide-based chlorine dioxide generation process |
US6576213B1 (en) | 1994-03-18 | 2003-06-10 | Eka Chemicals, Inc. | Method of producing chlorine dioxide |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6287533B1 (en) | 1999-09-20 | 2001-09-11 | Mohammed N. I. Khan | Production of chlorine dioxide by chemical reduction of ammonium chlorate in aqueous acidic solution |
US6607696B1 (en) * | 2000-02-18 | 2003-08-19 | Selective Micro Technologies, Llc | Apparatus and method for controlled delivery of a gas |
BR0108486A (en) | 2000-02-18 | 2003-04-22 | Selective Micro Technologies L | Apparatus and method for controlled release of a gas |
US7922984B2 (en) * | 2000-02-18 | 2011-04-12 | Selective Micro Technologies, Llc | Apparatus and method for controlled delivery of a gas |
JP4913057B2 (en) * | 2004-09-24 | 2012-04-11 | アクゾ ノーベル ナムローゼ フェンノートシャップ | Method for producing chlorine dioxide |
CN103112826B (en) * | 2013-03-20 | 2015-01-21 | 广西轻工业科学技术研究院 | Method for producing high-purity chlorine dioxide |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5091166A (en) * | 1990-08-31 | 1992-02-25 | Eka Nobel Ab | Process for the production of chlorine dioxide |
WO1992003374A1 (en) * | 1990-08-21 | 1992-03-05 | Sterling Canada, Inc. | Chlorine dioxide generation from chloric acid |
Family Cites Families (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2332181A (en) * | 1941-07-15 | 1943-10-19 | Mathieson Alkali Works Inc | Manufacture of chlorine dioxide |
GB666374A (en) † | 1948-12-22 | 1952-02-13 | Konink Ind Mij Voorheen Noury | Improvements in or relating to the production of chlorine dioxide |
US2811420A (en) * | 1954-11-17 | 1957-10-29 | Hooker Electrochemical Co | Chlorine dioxide generation |
US2833624A (en) * | 1956-10-02 | 1958-05-06 | Du Pont | Production of chlorine dioxide |
US2936219A (en) † | 1957-02-18 | 1960-05-10 | Hooker Chemical Corp | Production of chlorine dioxide |
US3810969A (en) * | 1971-06-22 | 1974-05-14 | Hooker Chemical Corp | Process for the production of chlorine dioxide |
US4129484A (en) * | 1976-05-11 | 1978-12-12 | Kemanord Ab | Process for regeneration of spent reaction solutions |
US4304762A (en) * | 1978-09-27 | 1981-12-08 | Lever Brothers Company | Stabilization of hydrogen peroxide |
JPS5953205B2 (en) † | 1981-05-19 | 1984-12-24 | 日本カ−リツト株式会社 | Method of producing high purity chlorine dioxide |
US4683039A (en) * | 1985-12-24 | 1987-07-28 | Tenneco Canada Inc. (Erco Division) | Membrane pervaporation process |
US4798715A (en) * | 1988-02-05 | 1989-01-17 | Eltech Systems Corporation | Producing chlorine dioxide from chlorate salt |
US4806215A (en) * | 1988-07-27 | 1989-02-21 | Tenneco Canada Inc. | Combined process for production of chlorine dioxide and sodium hydroxide |
US4915927A (en) * | 1988-10-21 | 1990-04-10 | Tenneco Canada Inc. | Production of chloric acid |
JPH0621005B2 (en) † | 1989-09-29 | 1994-03-23 | ダイソー株式会社 | Chlorine dioxide manufacturing method |
US5106465A (en) * | 1989-12-20 | 1992-04-21 | Olin Corporation | Electrochemical process for producing chlorine dioxide solutions from chlorites |
US5084148A (en) * | 1990-02-06 | 1992-01-28 | Olin Corporation | Electrochemical process for producing chloric acid - alkali metal chlorate mixtures |
US5248397A (en) † | 1990-02-06 | 1993-09-28 | Olin Corporation | Chlorine dioxide generation from chloric acid - alkali metal chlorate mixtures |
US5258105A (en) † | 1990-02-06 | 1993-11-02 | Olin Corporation | Chloric acid - alkali metal chlorate mixtures and chlorine dioxide generation |
US5108560A (en) * | 1990-03-30 | 1992-04-28 | Olin Corporation | Electrochemical process for production of chloric acid from hypochlorous acid |
SE500043C2 (en) * | 1990-08-31 | 1994-03-28 | Eka Nobel Ab | Process for continuous production of chlorine dioxide |
-
1992
- 1992-06-09 US US07/895,634 patent/US5486344A/en not_active Expired - Lifetime
- 1992-08-26 CA CA002076904A patent/CA2076904C/en not_active Expired - Lifetime
-
1993
- 1993-05-27 WO PCT/SE1993/000472 patent/WO1993025470A1/en active IP Right Grant
- 1993-05-27 JP JP6501372A patent/JP2819066B2/en not_active Expired - Lifetime
- 1993-05-27 DE DE69327650T patent/DE69327650D1/en not_active Expired - Lifetime
- 1993-05-27 BR BR9306505A patent/BR9306505A/en not_active IP Right Cessation
- 1993-05-27 EP EP93913716A patent/EP0644853B2/en not_active Expired - Lifetime
- 1993-06-07 ZA ZA933999A patent/ZA933999B/en unknown
-
1994
- 1994-12-07 FI FI945747A patent/FI112352B/en not_active IP Right Cessation
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1992003374A1 (en) * | 1990-08-21 | 1992-03-05 | Sterling Canada, Inc. | Chlorine dioxide generation from chloric acid |
US5091166A (en) * | 1990-08-31 | 1992-02-25 | Eka Nobel Ab | Process for the production of chlorine dioxide |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AU652320B1 (en) * | 1993-02-26 | 1994-08-18 | Eka Nobel Ab | Process of producing chlorine dioxide |
US5478446A (en) * | 1993-07-02 | 1995-12-26 | Eka Nobel Inc. | Electrochemical process |
US6576213B1 (en) | 1994-03-18 | 2003-06-10 | Eka Chemicals, Inc. | Method of producing chlorine dioxide |
US5858322A (en) * | 1994-08-18 | 1999-01-12 | Eka Nobel Inc. | Process of producing chlorine dioxide |
WO2002049958A1 (en) * | 2000-12-21 | 2002-06-27 | Superior Plus Inc. | Hydrogen peroxide-based chlorine dioxide generation process |
Also Published As
Publication number | Publication date |
---|---|
FI945747A (en) | 1994-12-07 |
US5486344A (en) | 1996-01-23 |
FI112352B (en) | 2003-11-28 |
CA2076904C (en) | 2002-01-22 |
CA2076904A1 (en) | 1993-12-10 |
DE69327650D1 (en) | 2000-02-24 |
JPH07507535A (en) | 1995-08-24 |
EP0644853B1 (en) | 1996-03-20 |
EP0644853B2 (en) | 2007-06-27 |
JP2819066B2 (en) | 1998-10-30 |
BR9306505A (en) | 1998-09-15 |
FI945747A0 (en) | 1994-12-07 |
ZA933999B (en) | 1994-02-21 |
EP0644853A1 (en) | 1995-03-29 |
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