Catalytic conversion of olefins to higher hydrocarbons
Patent
·
OSTI ID:6785202
An improved continuous process is disclosed for converting lower olefinic hydrocarbon feedstock to C/sub 5//sup +/ liquid hydrocarbons by contacting vapor phase olefinic feedstream with acid zeolite catalyst in the presence of recycled diluent stream rich in C/sub 3/-C/sub 4/ hydrocarbons in an enclosed reactor at elevated temperature and pressure. The improved technique comprises a system for cooling reactor effluent to recover a heavier hydrocarbon stream containing a mixture of C/sub 3/-C/sub 4/ hydrocarbons and C/sub 5//sup +/ hydrocarbons and debutanizing the heavier hydrocarbons below reactor pressure to obtain a C/sub 5//sup +/ product stream and a condensed C/sub 3/-C/sub 4/ hydrocarbon stream. Operating efficiencies are realized in the heat exchange system by reboiling the debutanized C/sub 5//sup +/ hydrocarbon product stream with hot reactor effluent, and by recycling and combining at least a portion of the condensed C/sub 3/-C/sub 4/ hydrocarbon stream to dilute liquid olefin hydrocarbon feedstock. By increasing pressure on the liquid olefinic hydrocarbon feedstock and liquid recycle stream to at least the elevated reactor pressure in the liquid state prior to vaporization, energy is conserved.
- Assignee:
- Mobil Oil Corp.
- Patent Number(s):
- US 4456779
- OSTI ID:
- 6785202
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
02 PETROLEUM
020500* -- Petroleum-- Products & By-Products
ALKANES
ALKENES
ATMOSPHERES
BOILING
BUTANE
CATALYTIC CRACKING
CATALYTIC EFFECTS
CHEMICAL COMPOSITION
CHEMICAL REACTIONS
CHEMICAL REACTORS
CONTROLLED ATMOSPHERES
COOLING
CRACKING
DECOMPOSITION
DILUTION
ENERGY CONSERVATION
FLUIDS
HYDROCARBONS
INORGANIC ION EXCHANGERS
ION EXCHANGE MATERIALS
LIQUEFIED GASES
LIQUEFIED PETROLEUM GASES
LIQUIDS
MATERIALS
MINERALS
NATURAL GAS LIQUIDS
ORGANIC COMPOUNDS
PETROLEUM PRODUCTS
PHASE TRANSFORMATIONS
PRODUCTION
PYROLYSIS
REMOVAL
THERMOCHEMICAL PROCESSES
ZEOLITES
020500* -- Petroleum-- Products & By-Products
ALKANES
ALKENES
ATMOSPHERES
BOILING
BUTANE
CATALYTIC CRACKING
CATALYTIC EFFECTS
CHEMICAL COMPOSITION
CHEMICAL REACTIONS
CHEMICAL REACTORS
CONTROLLED ATMOSPHERES
COOLING
CRACKING
DECOMPOSITION
DILUTION
ENERGY CONSERVATION
FLUIDS
HYDROCARBONS
INORGANIC ION EXCHANGERS
ION EXCHANGE MATERIALS
LIQUEFIED GASES
LIQUEFIED PETROLEUM GASES
LIQUIDS
MATERIALS
MINERALS
NATURAL GAS LIQUIDS
ORGANIC COMPOUNDS
PETROLEUM PRODUCTS
PHASE TRANSFORMATIONS
PRODUCTION
PYROLYSIS
REMOVAL
THERMOCHEMICAL PROCESSES
ZEOLITES