PROCESS FOR THE PRODUCTION OF CHLORINE DIOXIDE
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United States of America Patent
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Issued Date -
Sep 27, 2012
app pub date -
Oct 29, 2010
filing date -
Oct 30, 2009
priority date (Note) -
Abandoned
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Abstract
Disclosed is a process for the production of chlorine dioxide, by which sulphuric acid can be efficiently mixed into the reaction mixture. The process apparatus includes a reaction vessel (1) operating in reduced pressure, in which alkali metal chlorate is reduced in acidic conditions. The reaction vessel (1) is equipped with a recirculation line (2) of the reaction mixture, including a circulation pump (3) and, downstream after the pump, a heat exchanger (4). The process is characterized in that the sulphuric acid is fed into the recirculation line (2) before the circulation pump, or into the circulation pump (3).
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