Ashland Oil, Inc.

Ashchem I.p., Inc.

Sam F Eltomi

Keith O Wise

The invention relates to a method and apparatus for generating chlorine dioxide in a reaction medium comprising a flowing gaseous carrier stream thereby providing chlorine dioxide having a low water content for use in oxidizing treatment applications which are sensitive to water. The method of the invention uses a mineral acid, such as hydrochloric acid, a hypochlorite salt, such as sodium hypochlorite salt and a chlorite salt, such as sodium chlorite salt, as reactants for generating ClO.sub.2. Air is the preferred gaseous carrier stream.

Method of producing chlorine dioxide in a gaseous stream and apparatus

A method and apparatus for the automatic control of oxidative treatment of material with chlorine dioxide. The method and apparatus of the invention automatically adjust the amount of chlorine dioxide applied to the system being treated by a multiple feed-back loop system to provide adequate oxidative treatment while avoiding overfeed or underfeed conditions.

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Kansas City, MO, United States of America

Sam F Eltomi