Etherification of extracted crude methanol and conversion of raf

Details Etherification of extracted crude methanol and conversion of raf Etherification of extracted crude methanol and conversion of raf

1988-04-11

1989-05-02

Mars, Howard T.

Organic compounds -- part of the class 532-570 series

Organic compounds

Oxygen containing

568699, 585310, 585318, C07C 4106

Patent

active

048270458

ABSTRACT:
An improved process for reacting crude aqueous methanol feedstock with iso-olefinic hydrocarbons to produce C.sub.5.sup.+ methyl tertiary-alkly ethers, which comprises: contacting the aqueous methanol feedstock with a liquid hydrocarbon extractant rich in C.sub.4.sup.+ iso-alkene under liquid extraction conditons; recovering an organic extract phase comprising the hydrocarbon extractant and a major amount of methanol introduced in the feedstock; reacting the extracted methanol and C.sub.4.sup.+ isoalkene in contact with an acid etherification catalyst under catalytic reaction conditions to produce ether product; recovering an aqueous methanol raffinate phase containing the major amount of water introduced with the feedstock and a minor amount of feedstock methanol; and converting methanol from the aqueous raffinate phase to produce hydrocarbons.

REFERENCES:
patent: 4090949 (1978-05-01), Owen et al.
patent: 4709113 (1987-11-01), Harandi et al.

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