Hydrogen chloride-propylene separation
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United States of America Patent
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Dec 10, 1985
Grant Date -
N/A
app pub date -
Aug 1, 1983
filing date -
Aug 1, 1983
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Hydrogen chloride is recovered from a mixture with propylene by extractive distillation with an inert extraction solvent to minimize reaction between hydrogen chloride and propylene during such distillation. The temperature and pressure conditions are coordinated with the extraction solvent and amount thereof to prevent the presence of hydrogen chloride in a liquid state. The process is particularly suitable for recovering hydrogen chloride in the production of allyl chloride by thermal chlorination of propylene.
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