Chemistry of hydrocarbon compounds – Unsaturated compound synthesis – By addition of entire unsaturated molecules – e.g.,...
Patent
1988-04-20
1989-10-31
Caldarola, Glenn
Chemistry of hydrocarbon compounds
Unsaturated compound synthesis
By addition of entire unsaturated molecules, e.g.,...
585739, C07C 310, C07C 320
Patent
active
048779210
ABSTRACT:
A turbulent super-dense fluid-bed of a medium pore zeolite metallosilicate catalyst is operated at low WHSV, outside a critical region in the phase diagram of the hydrocarbon mixture in the reactor, at or above conditions of pressure P.sub.max and temperature T.sub.max at which a liquid phase may not form. The result is oligomerization of a "light gas" predominantly C.sub.3 -C.sub.5 olefin feed, the remainder being mainly C.sub.3 -C.sub.5 lower alkanes. The oligomerized product is a "heavies" stream, namely, distillate and lube oil range hydrocarbons, with a minor proportion by weight of gasoline range hydrocarbons. The reactor may be operated in either a C.sub.1.sup.+ distillate mode, or, a C.sub.22.sup.+ lubes mode. The superdense fluid bed with a density, measured at the bottom of the reaction zone, greater than 500 kg/m.sup.3, and operates at a temperature in the range from about 204.degree. C. (400.degree. F.) to about 371.degree. C. (700.degree. F.), and a pressure in the range from about 2857 kPa (400 psig) to about 13880 kPa (2000 psig) or even higher. This unique process provides per pass conversion of olefins, and selectively to C.sub.5.sup.+ hydrocarbons, each in excess of 80%.
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Harandi Mohsen N.
Owen Hartley
Caldarola Glenn
McKillop Alexander J.
Speciale Charles J.
Wise Lowell G.
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