Process for the reduction of carbochlorination residue
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United States of America Patent
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Oct 29, 1996
Grant Date -
N/A
app pub date -
Sep 14, 1994
filing date -
Sep 14, 1994
priority date (Note) -
Expired
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Abstract
An improved carbochlorination process for the production of volatile metal chlorides is disclosed. When chlorine gas contacts a metal oxide or a mixed metal oxide in a reaction zone in the presence of carbon at elevated temperatures, an undesirable carbochlorination residue forms containing carbon in the reaction zone. After the build-up of a carbochlorination residue in the reaction zone occurs, the volume of the carbochlorination residue in the reaction zone is reduced by periodically introducing just chlorine and metal oxide or mixed metal oxide reactants into the reaction zone without introducing any additional carbon. These components react with a portion of the carbon in the carbochlorination residue so as to reduce the amount of the residue.
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