Synthesis process for producing alkylate hydrocarbons

Patent · Tue Jan 06 04:00:00 EST 1987

OSTI ID:6840362

Owen, H; Tabak, S A; Wright, B S

A process is described for converting oxygenate feedstock comprising methanol, dimethyl ether or mixtures thereof to liquid hydrocarbons comprising the steps of contacting the feedstock with zeolite catalyst in a primary catalyst stage at elevated temperature and moderate pressure to convert feedstock to light hydrocarbons comprising ethene and C/sub 3/ + olefin components; fractionating the light hydrocarbons in a sorption fractionation unit in contact with a liquid C/sub 4/ + isoparaffinic sorbent to selectively sorb C/sub 3/ + olefin; fractionating C/sub 3/ + sorbate to recover C/sub 5/ + gasoline and provide a C/sub 3/-C/sub 4/ olefin rich stream; reacting a portion of the C/sub 4/ + isoparaffin with the C/sub 3/-C/sub 4/ olefin stream in an alkylation reactor in the presence of acid alkylation catalyst to produce C/sub 7/+ paraffinic alkylate; solvent has a molar ratio of methanol to water of from about 0.01 to about 1.0 recycling at least a portion of the unreacted C/sub 4/ + isoparaffin to the sorption fractionation unit as lean sorbent.

• Assignee: Mobil Oil Corp., New York, NY
• Patent Number(s): US 4634798
• OSTI ID: 6840362
• Country of Publication: United States
• Language: English

Related Subjects

090121* -- Hydrocarbon Fuels-- Chemical Synthesis-- (1976-1989)
10 SYNTHETIC FUELS
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201 -- Chemical & Physicochemical Properties
ALCOHOLS
ALKANES
ALKENES
ALKYLATION
CATALYSTS
CHEMICAL PREPARATION
CHEMICAL REACTIONS
CHEMICAL REACTORS
DISPERSIONS
ETHERS
FRACTIONATION
FUELS
GASOLINE
HYDROCARBONS
HYDROXY COMPOUNDS
INORGANIC ION EXCHANGERS
ION EXCHANGE MATERIALS
LIQUID FUELS
MATERIALS
METHANOL
METHYL ETHER
MINERALS
MIXTURES
ORGANIC COMPOUNDS
ORGANIC OXYGEN COMPOUNDS
OTHER ORGANIC COMPOUNDS
PARAFFIN
PETROLEUM PRODUCTS
PRESSURE DEPENDENCE
SEPARATION PROCESSES
SORPTION
SYNTHESIS
WAXES
ZEOLITES