PROCESS FOR THE PRODUCTION OF CHLORINE DIOXIDE

摘要

Chlorine dioxide is produced from sodium chlorate and hydrochloric acid in the presence of a significant amount (at least about 22 gpl) of sodium dichromate to improve the efficiency of chlorine dioxide production. The process is integrated with a chlorate cell producing sodium chlorate for the chlorine dioxide generation from sodium chloride by-product from a chlorine dioxide generating process. The integration is effected to maintain a pH of about 6 to 7 in the chlorate cell in the presence of about 2 to about 7 gpl of sodium dichromate.