Process for producing high octane gasoline
This patent describes a process for conversion of C/sub 2/+ olefins and C/sub 3/+ paraffins to high octane C/sub 5/+ gasoline rich in methyl tertiary alkyl ether and C/sub 5/+ gasoline rich in alkylated aromatics comprising the steps of: contacting a hydrocarbon feedstock mixture containing C/sub 4/+ iso-olefins and methanol with an etherification catalyst under etherification conditions whereby an etherification effluent stream is produced comprising methyl tertiary alky ethers, unreacted methanol and hydrocarbons; passed the effluent stream to a fractionator for separation in contact with a hydrocarbon stripping medium to produce a liquid stream comprising C/sub 5/+ gasoline rich in methyl tertiary alky either and a vapor stream comprising methanol and C/sub 5/ and lower hydrocarbons; reacting step b vapor stream and a feedstock stream comprising aromatic and olefins-rich hydrocarbon in contact with shape-selective medium pore metallosilicate catalyst particles in a conversion zone at elevated temperature under olefins conversion and aromatics alkylation conditions to recover after separation reaction product streams comprising comprising a first C/sub 5/+ gasoline stream rich in alkylated aromatics, a second stream comprising C/sub 3/ and C/sub 4/ paraffinic hydrocarbons and a third steam comprising C/sub 2/ and lower hydrocarbons.
- Assignee:
- Mobil Oil Corp., New York, NY
- Patent Number(s):
- US 4835329
- OSTI ID:
- 5747459
- Country of Publication:
- United States
- Language:
- English
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