Search International and National Patent Collections

1. (WO1989009760) ETHERIFICATION OF EXTRACTED CRUDE METHANOL AND CONVERSION OF RAFFINATE

Pub. No.:    WO/1989/009760    International Application No.:    PCT/US1989/001023
Publication Date: Oct 19, 1989 International Filing Date: Mar 10, 1989
IPC: C07C 41/06
C10L 1/02
Applicants: MOBIL OIL CORPORATION
Inventors: HARANDI, Mohsen, Nadimi
OWEN, Hartley
Title: ETHERIFICATION OF EXTRACTED CRUDE METHANOL AND CONVERSION OF RAFFINATE
Abstract:
An improved process for reacting crude aqueous methanol feedstock with iso-olefinic hydrocarbons to produce C5+ methyl tertiary-alkyl ethers, which comprises: contacting the aqueous methanol feedstock with a liquid hydrocarbon extractant rich in C¿4?+ iso-alkene 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¿4?+ 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.