skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Process for converting methanol to alkyl ethers, gasoline, distillate and alkylate liquid hydrocarbons

Abstract

A process is described for converting oxygenate feedstock comprising methanol to liquid hydrocarbons comprising the steps of (a) contacting the feedstock with zeolite catalyst in a primary catalyst stage at elevated temperature and moderate pressure to convert feedstock to hydrocarbons comprising C/sub 2/-C/sub 5/ olefins and C/sub 6/+ liquid hydrocarbons; (b) cooling and separating the primary stage effluent to recover a liquid C/sub 6/+ hydrocarbon stream and a light hydrocarbon stream rich in C/sub 2/-C/sub 5/ olefins including propylene and C/sub 4/-C/sub 5/ isoalkenes; (c) compressing at least a portion of the olefinic light hydrocarbon stream to condense a liquid olefinic hydrocarbon stream rich in C/sub 4/-C/sub 5/ isoalkenes and recovering a gaseous stream rich in ethene and propene; (d) reacting the isoalkenes with methanol in a secondary stage etherification zone by contacting the isoalkenes and methanol with an acid etherification catalyst to produce C/sub 5/-C/sub 6/ methyl isoalkylethers; (e) fractionating the secondary stage effluent to obtain a liquid either and C/sub 5/+ hydrocarbon stream and an olefinic C/sub 4/ stream rich in unreacted butenes and isobutane; (f) reacting the butene-rich olefinic stream from step (e) with isobutane in a catalytic alkylation stage in contact with acid alkylation catalyst tomore » convert at least a portion of olefins to alkylate gasoline; (g) recovering a propene-rich stream from step (c) and reacting the propene-rich stream with excess isobutane in step (f); and (h) recycling ethene and/or propene in a gaseous stream to the primary catalytic stage.« less

Inventors:
; ;
Publication Date:
OSTI Identifier:
6213992
Patent Number(s):
US 4684757
Assignee:
Mobil Oil Corp., New York, NY
Resource Type:
Patent
Resource Relation:
Patent File Date: Filed date 18 Jul 1986
Country of Publication:
United States
Language:
English
Subject:
10 SYNTHETIC FUELS; 37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; GASOLINE; CHEMICAL PREPARATION; METHANOL; FRACTIONATION; PETROLEUM DISTILLATES; 2-METHYLPROPANE; ALKENES; ALKYL RADICALS; BUTENES; CATALYSTS; CATALYTIC EFFECTS; COMPRESSION; COOLING; ETHERS; OXYGEN; PRESSURE DEPENDENCE; PROPYLENE; TEMPERATURE DEPENDENCE; ZEOLITES; ALCOHOLS; ALKANES; DISTILLATES; ELEMENTS; ENERGY SOURCES; FOSSIL FUELS; FUELS; HYDROCARBONS; HYDROXY COMPOUNDS; INORGANIC ION EXCHANGERS; ION EXCHANGE MATERIALS; LIQUID FUELS; MATERIALS; MINERALS; NONMETALS; ORGANIC COMPOUNDS; ORGANIC OXYGEN COMPOUNDS; PETROLEUM; PETROLEUM FRACTIONS; PETROLEUM PRODUCTS; RADICALS; SEPARATION PROCESSES; SYNTHESIS; 090121* - Hydrocarbon Fuels- Chemical Synthesis- (1976-1989); 400201 - Chemical & Physicochemical Properties

Citation Formats

Avidan, A A, Krambeck, F K, and Tabak, S A. Process for converting methanol to alkyl ethers, gasoline, distillate and alkylate liquid hydrocarbons. United States: N. p., 1987. Web.
Avidan, A A, Krambeck, F K, & Tabak, S A. Process for converting methanol to alkyl ethers, gasoline, distillate and alkylate liquid hydrocarbons. United States.
Avidan, A A, Krambeck, F K, and Tabak, S A. Tue . "Process for converting methanol to alkyl ethers, gasoline, distillate and alkylate liquid hydrocarbons". United States.
@article{osti_6213992,
title = {Process for converting methanol to alkyl ethers, gasoline, distillate and alkylate liquid hydrocarbons},
author = {Avidan, A A and Krambeck, F K and Tabak, S A},
abstractNote = {A process is described for converting oxygenate feedstock comprising methanol to liquid hydrocarbons comprising the steps of (a) contacting the feedstock with zeolite catalyst in a primary catalyst stage at elevated temperature and moderate pressure to convert feedstock to hydrocarbons comprising C/sub 2/-C/sub 5/ olefins and C/sub 6/+ liquid hydrocarbons; (b) cooling and separating the primary stage effluent to recover a liquid C/sub 6/+ hydrocarbon stream and a light hydrocarbon stream rich in C/sub 2/-C/sub 5/ olefins including propylene and C/sub 4/-C/sub 5/ isoalkenes; (c) compressing at least a portion of the olefinic light hydrocarbon stream to condense a liquid olefinic hydrocarbon stream rich in C/sub 4/-C/sub 5/ isoalkenes and recovering a gaseous stream rich in ethene and propene; (d) reacting the isoalkenes with methanol in a secondary stage etherification zone by contacting the isoalkenes and methanol with an acid etherification catalyst to produce C/sub 5/-C/sub 6/ methyl isoalkylethers; (e) fractionating the secondary stage effluent to obtain a liquid either and C/sub 5/+ hydrocarbon stream and an olefinic C/sub 4/ stream rich in unreacted butenes and isobutane; (f) reacting the butene-rich olefinic stream from step (e) with isobutane in a catalytic alkylation stage in contact with acid alkylation catalyst to convert at least a portion of olefins to alkylate gasoline; (g) recovering a propene-rich stream from step (c) and reacting the propene-rich stream with excess isobutane in step (f); and (h) recycling ethene and/or propene in a gaseous stream to the primary catalytic stage.},
doi = {},
url = {https://www.osti.gov/biblio/6213992}, journal = {},
number = ,
volume = ,
place = {United States},
year = {1987},
month = {8}
}