Process for producing cumene
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United States of America Patent
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Feb 16, 2016
Grant Date -
Jul 2, 2015
app pub date -
Jul 23, 2013
filing date -
Jul 26, 2012
priority date (Note) -
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Abstract
In a process for producing cumene, benzene and a C3 alkylating agent comprising isopropanol are supplied to an alkylation zone comprising a molecular sieve alkylation catalyst under alkylation conditions such that the isopropanol reacts with the benzene to produce a reaction product comprising cumene. Subsequently, the supply of benzene and C3 alkylating agent to the alkylation zone is ceased and a gaseous stripping agent is supplied to the molecular sieve alkylation catalyst under conditions effective to remove nitrogenous impurities deposited on the catalyst during the preceding alkylation reaction. The supply of benzene and C3 alkylating agent to the alkylation zone is then reinitiated.
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