Integrated process for converting methanol to gasoline and disti

Details Integrated process for converting methanol to gasoline and disti Integrated process for converting methanol to gasoline and disti

1991-12-12

1992-09-08

Pal, Asok

Chemistry of hydrocarbon compounds

Unsaturated compound synthesis

From nonhydrocarbon feed

585329, 585313, 585469, 585722, 585312, 585315, 585316, C07C 120

Patent

active

051460327

ABSTRACT:
An integrated process comprising the steps of pressurizing a C.sub.3.sup.+ olefin hydrocarbon stream and a methanol feed and contacting the C.sub.3.sup.+ hydrocarbon stream and methanol feed in a first reaction zone with a medium-pore shape selective oligomerization zeolite catalyst at elevated pressure and moderate temperature to convert at least a portion of the C.sub.3.sup.+ hydrocarbons and methanol feed to heavier liquid hydrocarbon product stream comprising olefinic gasoline and distillate range liquids. An ethene stream and a stream containing unreacted methanol and water are recovered from the first reaction zone effluent and the methanol is separated from the water.
The ethene and the separated unreacted methanol are contacted with a medium-pore shape selective zeolite catalyst in a second reaction zone at elevated temperature and moderate pressure to convert the methanol feed to hydrocarbons comprising C.sub.3.sup.+ olefins and cooling effluent from the second reaction zone to recover a C.sub.3.sup.+ olefin hydrocarbon stream and a C.sub.2.sup.- light gas stream. The C.sub.3.sup.+ olefin hydrocarbon stream is fed to the first reaction zone with the methanol feed.

REFERENCES:
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patent: 4788365 (1988-11-01), Harandi et al.
patent: 4935568 (1990-06-01), Harandi et al.
patent: 4992611 (1991-02-01), Morrison

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