Continuous integrated process for producing dimethyl carbonate and methyl tert-butyl ether
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United States of America Patent
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Mar 16, 1993
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N/A
app pub date -
Apr 13, 1992
filing date -
May 8, 1991
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Expired
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Abstract
Dimethyl carbonate and methyl tert-butyl ether are prepared by a continuous integrated process comprising: a) feeding methanol, carbon monoxide and oxygen into a reaction environment maintained under methanol oxidative carbonylation conditions, to form a liquid reaction mixture containing dimethyl carbonate and unaltered methanol; b) at least partly eliminating the water from the reaction mixture of stage a); c) feeding the dehydrated mixture of stage b) and isobutene, or a hydrocarbon fraction containing isobutene, into a reaction environment maintained under etherification conditions, to form a liquid reaction mixture containing dimethyl carbonate and methyl tert-butyl ether; and d) recovering the dimethyl carbonate and methyl tert-butyl ether from the reaction mixture of stage c).
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