FR2426016A1 - Continuous prodn. of chlorine di:oxide from chlorate and chloride - enabling better sepn. of salts produced in the reactor (BR 04.12.79) - Google Patents

Continuous prodn. of chlorine di:oxide from chlorate and chloride - enabling better sepn. of salts produced in the reactor (BR 04.12.79)

Info

Publication number
FR2426016A1
FR2426016A1 FR7912407A FR7912407A FR2426016A1 FR 2426016 A1 FR2426016 A1 FR 2426016A1 FR 7912407 A FR7912407 A FR 7912407A FR 7912407 A FR7912407 A FR 7912407A FR 2426016 A1 FR2426016 A1 FR 2426016A1
Authority
FR
France
Prior art keywords
chloride
chlorate
water
reactor
contg
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
FR7912407A
Other languages
French (fr)
Other versions
FR2426016B1 (en
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.)
Occidental Chemical Corp
Original Assignee
Hooker Chemicals and Plastics Corp
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 Hooker Chemicals and Plastics Corp filed Critical Hooker Chemicals and Plastics Corp
Publication of FR2426016A1 publication Critical patent/FR2426016A1/en
Application granted granted Critical
Publication of FR2426016B1 publication Critical patent/FR2426016B1/fr
Granted legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J19/32—Packing elements in the form of grids or built-up elements for forming a unit or module inside the apparatus for mass or heat transfer
    • 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
    • C01B11/025—Preparation from chlorites or chlorates from chlorates without any other reaction reducing agent than chloride ions
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J2219/32—Details relating to packing elements in the form of grids or built-up elements for forming a unit of module inside the apparatus for mass or heat transfer
    • B01J2219/322—Basic shape of the elements
    • B01J2219/32203—Sheets
    • B01J2219/3221—Corrugated sheets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J2219/32—Details relating to packing elements in the form of grids or built-up elements for forming a unit of module inside the apparatus for mass or heat transfer
    • B01J2219/322—Basic shape of the elements
    • B01J2219/32203—Sheets
    • B01J2219/32213—Plurality of essentially parallel sheets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J2219/32—Details relating to packing elements in the form of grids or built-up elements for forming a unit of module inside the apparatus for mass or heat transfer
    • B01J2219/322—Basic shape of the elements
    • B01J2219/32203—Sheets
    • B01J2219/32213—Plurality of essentially parallel sheets
    • B01J2219/32217—Plurality of essentially parallel sheets with sheets having corrugations which intersect at an angle of 90 degrees
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J2219/32—Details relating to packing elements in the form of grids or built-up elements for forming a unit of module inside the apparatus for mass or heat transfer
    • B01J2219/324—Composition or microstructure of the elements
    • B01J2219/32408—Metal
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J2219/32—Details relating to packing elements in the form of grids or built-up elements for forming a unit of module inside the apparatus for mass or heat transfer
    • B01J2219/324—Composition or microstructure of the elements
    • B01J2219/32483—Plastics

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Inorganic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Catalysts (AREA)
  • Inorganic Compounds Of Heavy Metals (AREA)

Abstract

The process comprises continuously reacting, in a single generator/evaporator/crystalliser, an alkali metal chlorate and chloride and H2SO4 opt. mixed with HCl or H3PO4 (2N-4N acidity) at 65-85 degrees C. in the presence of a catalyst from vanadium pentoxide or ions of Ag, Mn, As or bichromate. Under a pressure of 100-400 mm. Hg, water is evaporated to give a gas prod. contg. ClO2, Cl2 and water. From the reactor an aq. slurry contg. crystallised salts is passed down a sepg. column up which water is passed. The soln. contg. chlorate, chloride and acid is recycled to the reactor and at the base is slurry of substantially pure sodium sulphate is recovered. The column comprises packing for at least 30% of the height and spacing of which there is at least 10% at the base of the column. The packing is composed of several parallel layers which are in undulating form. The undulations in adjacent layers are in intermittent contact and the interface contact angle is 90 degrees. ClO2 is used for bleaching fats, paper pulp and textiles also for purificn. of water and the recovery of phenols from industrial wastes. The process enables the levels of chlorate, chloride and H2SO4 impurities in the recovered sulphate to be kept at about 0.2-0.25% for long operating periods.
FR7912407A 1978-05-18 1979-05-16 Continuous prodn. of chlorine di:oxide from chlorate and chloride - enabling better sepn. of salts produced in the reactor (BR 04.12.79) Granted FR2426016A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US90738778A 1978-05-18 1978-05-18

Publications (2)

Publication Number Publication Date
FR2426016A1 true FR2426016A1 (en) 1979-12-14
FR2426016B1 FR2426016B1 (en) 1983-09-02

Family

ID=25424013

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7912407A Granted FR2426016A1 (en) 1978-05-18 1979-05-16 Continuous prodn. of chlorine di:oxide from chlorate and chloride - enabling better sepn. of salts produced in the reactor (BR 04.12.79)

Country Status (4)

Country Link
BR (1) BR7903041A (en)
FR (1) FR2426016A1 (en)
NZ (1) NZ190344A (en)
PT (1) PT69624A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0365501A1 (en) * 1988-10-20 1990-04-25 Eka Nobel Aktiebolag Process for production of chlorine dioxide

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH467719A (en) * 1967-01-23 1969-01-31 Schweizerische Sodafabrik Installation for the preparation of aqueous solutions of chlorine dioxide
FR2086624A5 (en) * 1970-04-03 1971-12-31 Ugine Kuhlmann Aq chlorine dioxide prodn - from chlorine ataq sodium chlorite
CH527126A (en) * 1967-01-23 1972-08-31 Schweizerische Sodafabrik Apparatus for chlorine dioxide solns prepn
FR2138753A1 (en) * 1971-05-21 1973-01-05 Hooker Chemical Corp
US3976758A (en) * 1975-03-07 1976-08-24 Hooker Chemicals & Plastics Corporation Production of chlorine dioxide
US4049784A (en) * 1975-03-07 1977-09-20 Hooker Chemicals & Plastics Corporation Production of chlorine dioxide with product slurry metathesis
FR2352746A2 (en) * 1975-03-07 1977-12-23 Hooker Chemicals Plastics Corp Chlorine dioxide prodn. using hydrochloric acid - with useful values recovered from salt byprod. by countercurrent washing
US4079123A (en) * 1976-12-30 1978-03-14 Hooker Chemicals & Plastics Corporation Process for the production of chlorine dioxide
FR2383122A2 (en) * 1977-03-07 1978-10-06 Chimiques Chlorine di:oxide prepn. from tail gases - using counter current gas liquid contact in main and sec. reactors (SF 30.11.77)

Patent Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH467719A (en) * 1967-01-23 1969-01-31 Schweizerische Sodafabrik Installation for the preparation of aqueous solutions of chlorine dioxide
CH527126A (en) * 1967-01-23 1972-08-31 Schweizerische Sodafabrik Apparatus for chlorine dioxide solns prepn
FR2086624A5 (en) * 1970-04-03 1971-12-31 Ugine Kuhlmann Aq chlorine dioxide prodn - from chlorine ataq sodium chlorite
FR2138753A1 (en) * 1971-05-21 1973-01-05 Hooker Chemical Corp
US3816077A (en) * 1971-05-21 1974-06-11 Hooker Chemical Corp Chlorine dioxide generating system
US3976758A (en) * 1975-03-07 1976-08-24 Hooker Chemicals & Plastics Corporation Production of chlorine dioxide
FR2302964A1 (en) * 1975-03-07 1976-10-01 Hooker Chemicals Plastics Corp CHLORINE BIOXIDE PRODUCTION PROCESS
US4049784A (en) * 1975-03-07 1977-09-20 Hooker Chemicals & Plastics Corporation Production of chlorine dioxide with product slurry metathesis
FR2352746A2 (en) * 1975-03-07 1977-12-23 Hooker Chemicals Plastics Corp Chlorine dioxide prodn. using hydrochloric acid - with useful values recovered from salt byprod. by countercurrent washing
US4079123A (en) * 1976-12-30 1978-03-14 Hooker Chemicals & Plastics Corporation Process for the production of chlorine dioxide
FR2376066A1 (en) * 1976-12-30 1978-07-28 Hooker Chemicals Plastics Corp PROCESS FOR THE PRODUCTION OF CHLORINE DIOXIDE
FR2383122A2 (en) * 1977-03-07 1978-10-06 Chimiques Chlorine di:oxide prepn. from tail gases - using counter current gas liquid contact in main and sec. reactors (SF 30.11.77)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0365501A1 (en) * 1988-10-20 1990-04-25 Eka Nobel Aktiebolag Process for production of chlorine dioxide
US5002746A (en) * 1988-10-20 1991-03-26 Eka Nobel Ab Process for production of chlorine dioxide

Also Published As

Publication number Publication date
FR2426016B1 (en) 1983-09-02
NZ190344A (en) 1981-02-11
BR7903041A (en) 1979-12-04
PT69624A (en) 1979-06-01

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ST Notification of lapse