Document gbZRX0KJB1E3e19VKDZGMrx9q

and toluene. In 1953, Continental also began construction of a gas processing plant at nearby Gillis, Louisiana, which will increase the volume of field condensables to be processed in the refinery. The plant now contains two atmos pheric crude topping units. The original unit was modified slightly to increase its capacity from 12,000 to 16,000 barrels daily. Two new thermal catalytic-crackingunitsarecontained in ajointstructureand feed into a common fraction ation system. They are of the modern Socony design employing gas-Iiftcatalyst circulating systems. The two cat crackers have separate feed prep aration facilities; the one feed prep aration system being designed to feed only distillate stocks, consists of a charge drum, a vaporizer furnace, and a flash drum. Elliott single-stage centrifugal compressors, illustrated at right, serve theTCC units. Elliott steam turbines also drive other pumps and units around the refinery. The four water-tube boilers, each with a capacity of 85,000 lb per hr generate steam at 350 psig and 600 F. Considerable steam is generated at 350 psig in the kiln waste-heat boilers at the two cat-cracking units. Steam is available for processing at 350, 150, and 20 psig. Pump-driving tur bines were carefully selected to in sure maximum power realization from the steam before use in process ing. To permit satisfactory balancing of three steam systems under all plant loads, several process turbines were designed to use 350-psi steam and operate condensing; others to use 350-psi steam and exhaust to the 150-psi system; while some units use 350-psi steam and exhaust to the 20-psi system. The prime contractors of the new Process units, except the platformer, and for the alki revamp was the Badger Process Division of Stone and Webster Corporation. Theplatformer One j the Elliott centrijugal compressors sctcirg a ,at rracktr. I he compressor is rated SJ.tX/O inlet cjm, inlet pressure IJ.5J psia. discharge pressure. >.5t> psig, speed -IJOO rprn. The IW<l-hp turbine lakes steam at .55h psig. J.it) F and discharges la a condenser at 10 in. Hg ah.,. lilts n the other Elliott tinhine-dneen centrijugal compressor sereins a cat cracker. Compressor is rated .>6,050 inlet cjm. inlet pressure I4.fi psia. discharge pressure -US) psig, speed .iiiOO rpm. Turbine is rated VX) hp, using i50-psig steam.