초록 ▼

Chlorine dioxide is formed at high efficiency from a solution of acid sodium chlorate at high sulphuric acid normality to which methanol is fed. The reaction medium is at its boiling point under a subatmospheric pressure. Total acid normality values in the range of about 7 to about 9 normal may be u

Chlorine dioxide is formed at high efficiency from a solution of acid sodium chlorate at high sulphuric acid normality to which methanol is fed. The reaction medium is at its boiling point under a subatmospheric pressure. Total acid normality values in the range of about 7 to about 9 normal may be used while high efficiency of chlorine dioxide production is maintained.

대표청구항 ▼

A continuous process for the production of chlorine dioxide in commercial quantities at high efficiency by reducing sodium chlorate with methanol in an aqueous acid reaction medium, which comprises: continuously feeding aqueous sodium chlorate solution and sulphuric acid to a boiling aqueous acid re

A continuous process for the production of chlorine dioxide in commercial quantities at high efficiency by reducing sodium chlorate with methanol in an aqueous acid reaction medium, which comprises: continuously feeding aqueous sodium chlorate solution and sulphuric acid to a boiling aqueous acid reaction medium in a reaction zone maintained under a subatmospheric pressure, said sulphuric acid being fed to the reaction medium to provide a total acid normality in the reaction medium below 9 normal and down to about 7 normal, continuously feeding methanol to the reaction medium in sufficient quantity to form chlorine dioxide from the reaction medium, continuously removing chlorine dioxide from the reaction zone in gaseous admix ure with steam and dissolving in water to form and aqueous solution thereof, said reaction medium having a volume which results in an evaporation rate of water therefrom in said reaction zone to about 50 to about 500 lb of gaseous admixture/hr/sq. ft. of surface area of reaction medium, and continuously depositing sodium acid sulphate from the aqueous reaction medium in the reaction zone.