Recovery of Olefins from Para-Xylene Process
A process for producing para-xylene, by (a) contacting toluene with methanol in the presence of an alkylation catalyst under conditions effective to produce an alkylation effluent comprising xylenes and a by-product mixture comprising water, dimethyl ether and C4− hydrocarbons; (b) separating the al...
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Main Authors | , , |
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Format | Patent |
Language | English |
Published |
10.04.2014
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Subjects | |
Online Access | Get full text |
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Summary: | A process for producing para-xylene, by (a) contacting toluene with methanol in the presence of an alkylation catalyst under conditions effective to produce an alkylation effluent comprising xylenes and a by-product mixture comprising water, dimethyl ether and C4− hydrocarbons; (b) separating the alkylation effluent into a first fraction containing xylenes and a second fraction containing the by-product mixture; (c) removing water from the second fraction to produce a dried by-product mixture; (d) fractionating the dried by-product mixture to separate the mixture into a bottoms stream containing dimethyl ether and an overhead stream containing at least some of the C4- hydrocarbons; and (e) recovering ethylene and propylene from the overhead stream. |
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Bibliography: | Application Number: US201314035040 |