Organic compounds -- part of the class 532-570 series – Organic compounds – Oxygen containing
Patent
1988-04-11
1989-05-02
Mars, Howard T.
Organic compounds -- part of the class 532-570 series
Organic compounds
Oxygen containing
568699, 585310, 585319, 585322, C07C 4106
Patent
active
048270466
ABSTRACT:
An improved process for reacting crude aqueous methanol feedstock with tertiary-olefinic hydrocarbons to produce C.sub.5.sup.+ methyl tertiary-alkyl ethers, which comprises: contacting the aqueous methanol feedstock with a liquid hydrocarbon extractant rich in C.sub.4.sup.+ isoalkylene under liquid extraction conditions; 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; separating ether product from unreacted methanol and olefin; 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 concurrently with unreacted methanol and olefin from etherification effluent separation to produce hydrocarbons.
REFERENCES:
patent: 4709113 (1987-11-01), Harandi et al.
patent: 4746762 (1988-05-01), Avidan et al.
Harandi Mohsen N.
Owen Hartley
Mars Howard T.
McKillop Alexander J.
Mobil Oil Corporation
Speciale Charles J.
Wise L. G.
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