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Application filed by А.Л. ГольдиновfiledCriticalА.Л. Гольдинов
Priority to SU4402276/26ApriorityCriticalpatent/SU1589460A1/en
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Publication of SU1589460A1publicationCriticalpatent/SU1589460A1/en
FIELD: chemical industry. SUBSTANCE: absorbent gases in production of chloral by ethanol chlorination method, containing impurities of chlorine and ethyl chloride are treated in conditions of circulation of water in mixture with ethanol with water content of 11.3-30 mas.%. Temperature of the process is 45-70 C. Content of combined chlorine in mixture is maintained within 0.4-4.9 mas.%. Spent mixture of water and ethanol is directed to production of chloral, stage of ethanol chlorination. Then, absorbent gases are sprayed with aqueous solution of NaOH. Amount of active chlorine in spent alkali solution does not exceed 0.03 g per 10 l of cleaned absorbent gases. Method provides for reduction of amount of sewage down to 3.6 l per ton of chloral. EFFECT: reduced amount of contaminated sewage. 2 cl, 1 tbl
SU4402276/26A1988-04-041988-04-04Method for cleaning absorbent gases in production of chloral
SU1589460A1
(en)
Processes for the production of chlorine dioxide and for the treatment of contaminated water, and apparatus for the manufacture of chlorine dioxide and for the disinfection of water containing contaminants.