Conversion of methanol to gasoline
This patent describes a continuous process for converting oxygenated hydrocarbon feedstock containing methanol, dimethyl ether or mixtures thereof to gasoline boiling range hydrocarbons in a fixed bed adiabatic reaction zone with a medium pore crystalline acid zeolite catalyst at elevated temperature and pressure comprising: contacting oxygenate feedstock with the catalyst in the fixed bed reaction zone in the presence of C/sub 3/-C/sub 4/ saturated hydrocarbons under conditions to convert substantially all oxygenates and a portion of the saturated hydrocarbons to produce gasoline range hydrocarbons; cooling reaction effluent from the fixed bed reaction zone to form an aqueous liquid phase, a gas phase rich in C/sub 2/-hydrocarbons, and a liquid hydrocarbon phase rich in C/sub 3/+ hydrocarbons; separating at a pressure below reaction zone pressure the effluent into a byproduct aqueous stream, a byproduct gaseous stream, and a condensed C/sub 3/+ liquid hydrocarbon stream; pumping the condensed liquid stream to a pressure above reaction zone pressure; heating and partially vaporizing the pressurized hydrocarbon stream to form a vapor phase rich in C/sub 3/-C/sub 4/ saturated hydrocarbons and a first liquid product stream rich in gasoline product; separating the partially vaporized stream into a second liquid product stream and a C/sub 3/-C/sub 4/ rich vapor recycle stream.
- Assignee:
- Mobil Oil Corp., New York, NY
- Patent Number(s):
- US 4788369
- OSTI ID:
- 6480901
- Country of Publication:
- United States
- Language:
- English
Similar Records
System for conversion of crude oxygenate to gasoline with feedstock extraction
Multistage process for converting oxygenates to alkylated liquid hydrocarbons
Related Subjects
020400* -- Petroleum-- Processing
ALCOHOLS
BOILING POINTS
CATALYSTS
CHEMICAL COMPOSITION
CRYSTAL STRUCTURE
ETHERS
FUELS
GASOLINE
HYDROXY COMPOUNDS
INORGANIC ION EXCHANGERS
ION EXCHANGE MATERIALS
LIQUID FUELS
MATERIALS
METHANOL
METHYL ETHER
MICROSTRUCTURE
MINERALS
ORGANIC COMPOUNDS
ORGANIC OXYGEN COMPOUNDS
PETROLEUM PRODUCTS
PHYSICAL PROPERTIES
POROSITY
PROCESSING
PRODUCTION
SEPARATION PROCESSES
THERMODYNAMIC PROPERTIES
TRANSITION TEMPERATURE
ZEOLITES