Uop Lcc

Upo LLC

Vop Inc.

Vance P Burton

Michael Z Mikulicz

A process for the production of motor fuel by the polymerization of aliphatic C.sub.3 and C.sub.4 mono-olefins wherein a small amount of a liquid aromatic hydrocarbon is passed through the polymerization zone to remove polymers. By-product alkylated aromatic hydrocarbons are retained in the motor fuel product as high octane components.

Process for motor fuel production by olefin polymerization

Solid catalysts including solid phosphoric acid catalysts are regenerated in-situ in a multi-step method. A sequence which includes depressurization, soaking in an aromatic hydrocarbon-containing liquid at a high temperature and pressure, depressurization and draining is repeated three times. The regeneration removes polymers formed from olefinic reactants.

Catalyst regeneration method

A process and apparatus for the hydrogen fluoride-catalyzed alkylation of hydrocarbonaceous species, utilizing multiple reaction zones, in which the inventories and strengths of catalysts within the several reaction zones are controlled. A portion of the catalyst from a reaction zone over-abundant in either acid strength or acid inventory is educted from that zone and passed to a reaction zone deficient in either acid strength or acid inventory. The apparatus includes catalyst recycle conduits within each reaction-settling zone and conduit means for interconnecting the individual recycle conduits to provide alternative flow paths to move catalyst from one recycle conduit to another recycle conduit or vice-versa.

Hydrogen fluoride-catalyzed alkylation apparatus

The reaction product effluent emanating from an isoparaffinic/olefinic, HF-alkylation reactor system, containing normal paraffins, motor fuel, alkylate, unreacted isoparaffins, hydrogen fluoride catalyst and organic fluoride compounds, is separated to recover a motor fuel alkylate product substantially free from fluoride compounds, and having a predetermined volatility, or vapor pressure. Two separation zones are employed to produce an alkylate containing hydrogen fluoride and a normal paraffin stream containing organic fluoride and hydrogen fluoride. Three treating zones afford the recovery of a fluoride-free motor fuel alkylate and a fluoride-free normal paraffin concentrate; a portion of the latter is blended with the former to adjust the volatility to the predetermined level.

Vapor pressure-adjusted motor fuel alkylate of reduced fluoride content

An improved HF alkylation process for producing alkylated isoparaffins wherein capital cost, operating costs and energy consumption are reduced by elimination of the necessity of the commonly-included catalyst regeneration facilities. Hydrocarbonaceous polymers which form collateral to alkylation reactions occurring in a reaction zone, and which contaminate the acid catalyst therein, are routed to pass through reboiling means of two fractionators whereby HF and some combined fluorides in the polymers are removed and the polymers exit the process with an alkylate product. Some decomposition of the combined fluorides prevents fluorine contamination of the alkylate product.

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Arlington Heights, IL, United States of America

Vance P Burton