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

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

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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 »« less

Inventors:: Avidan, A A; Krambeck, F K; Tabak, S A

Publication Date:: 1987-08-04

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.

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                    Avidan, A A, Krambeck, F K, & Tabak, S A. Process for converting methanol to alkyl ethers, gasoline, distillate and alkylate liquid hydrocarbons.  United States.

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                    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.

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@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}

}

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