Novel motor fuel alkylation process

Patent · Tue Jun 30 04:00:00 EDT 1987

OSTI ID:6335751

Kocal, J A; Imai, T

A process is described for the alkylation of an isoparaffin with an olefin-acting agent in the presence of an alkylation catalyst comprising the steps of: (a) drying the olefin-acting agent and at least a portion of the isoparaffin in a drying means to produce a dried alkylation feedstock. The drying is performed such that the water content of the alkylation catalyst is maintained at less than 2.0 wt.% based on the total weight of the catalyst; (b) contacting the dried alkylation feedstock and recycled paraffin with the alkylation catalyst. The catalyst comprises an anhydrous mixture of from about 0.1 to about 15 wt.% of an ether component selected from the group consisting of tert-butyl ether, methylphenyl ether, tert-amylmethyl ether (TAME), and methyl tert-butyl ether (MTBE) and at least 80 wt.% mineral acid in a reaction zone at alkylation conditions and producing a reaction product effluent containing (i) normally liquid alkylate, (ii) unreacted isoparaffin, (iii) alkylation catalyst, and (iv) polymer products; (c) separating the reaction product effluent in a separation zone into (i) a liquid hydrocarbon phase and (ii) a liquid alkylation catalyst phase containing polymer products; and, (d) regenerating at least a portion of the liquid alkylation catalyst phase at a rate sufficient to provide a polymer products concentration in the liquid alkylation catalyst phase of less than 15% wt.% based on th total weight of the liquid alkylation catalyst phase.

• Assignee: UOP Inc., Des Plaines, IL
• Patent Number(s): US 4677245
• OSTI ID: 6335751
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
ALKANES
ALKENES
ALKYLATION
AUTOMOTIVE FUELS
BUTYL ETHER
CATALYSTS
CHEMICAL REACTION YIELD
CHEMICAL REACTIONS
DISPERSIONS
DRYING
ETHERS
FUELS
HYDROCARBONS
HYDROGEN COMPOUNDS
INORGANIC ACIDS
METHYL ETHER
MIXTURES
ORGANIC COMPOUNDS
ORGANIC OXYGEN COMPOUNDS
OTHER ORGANIC COMPOUNDS
PARAFFIN
PHENYL ETHER
POLYMERS
QUANTITY RATIO
RECYCLING
REGENERATION
WAXES
YIELDS