GB670743A - Improvements in or relating to the preparation of chlorine dioxide - Google Patents

Improvements in or relating to the preparation of chlorine dioxide

Info

Publication number
GB670743A
GB670743A GB20313/49A GB2031349A GB670743A GB 670743 A GB670743 A GB 670743A GB 20313/49 A GB20313/49 A GB 20313/49A GB 2031349 A GB2031349 A GB 2031349A GB 670743 A GB670743 A GB 670743A
Authority
GB
United Kingdom
Prior art keywords
liquid
chlorate
chlorine dioxide
tower
grams
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.)
Expired
Application number
GB20313/49A
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.)
Mathieson Chemical Corp
Olin Corp
Original Assignee
Mathieson Chemical Corp
Olin 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 Mathieson Chemical Corp, Olin Corp filed Critical Mathieson Chemical Corp
Publication of GB670743A publication Critical patent/GB670743A/en
Expired legal-status Critical Current

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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Inorganic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

<PICT:0670743/III/1> Chlorine dioxide is prepared by passing a current of finely divided inert gas or air through a solution of mineral acid other than hydrochloric, equivalent to a sulphuric acid solution of at least 1,200 grams per litre, saturated with metallic chlorate free from chloride ions. The mineral acid must be non-reducing and non-oxidizing under the reaction conditions. The chlorate saturated acid may be sprayed into the top of a packed or empty tower, the inert gas entering at the bottom but contact between liquid and gas is preferably effected by circulating the liquid and gas in counter or concurrent. As shown in the Figure, sulphuric acid of 1,250 grams/litre containing 6.5 grams/litre of sodium chlorate is circulated from the bottom of tower 1, to a reheater 12 and a chlorate saturator 13. A current of air is passed up the tower through a porous plate 3. A fraction of the liquid is withdrawn at 5 and passed to a closed crystallizer 6 and thence via a filter 7 to a vat 8 where the sulphuric acid is made up to strength before rejoining the liquid passing to the reheater 12. Chlorine dioxide is withdrawn at 4. Specification 377,376 is referred to.
GB20313/49A 1948-08-07 1949-08-04 Improvements in or relating to the preparation of chlorine dioxide Expired GB670743A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR670743X 1948-08-07

Publications (1)

Publication Number Publication Date
GB670743A true GB670743A (en) 1952-04-23

Family

ID=9016539

Family Applications (1)

Application Number Title Priority Date Filing Date
GB20313/49A Expired GB670743A (en) 1948-08-07 1949-08-04 Improvements in or relating to the preparation of chlorine dioxide

Country Status (1)

Country Link
GB (1) GB670743A (en)

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