Document pmBkgKnNbRyMv2GD2wV2jgEp7

Is injected into the system, together with fresh Water to wash out the residual brine and soluble salts, and from there through another series of exchangers and into a heater or furnace. The hot oils, from the heater, flow into a ftactlonatlng tower operatlngatsubstantlallyatraospherlcpressure, which Is designed to separate the straightrun gasoline, kerosene, and gas oil fractions. ' The gas oil, or reduced crude, from the bottom of the atmospheric tower is then reheated and introduced into the second-stage tower, which is operated under a vacuum for the production of gas oil for charge to the catalytic cracking unit, and asphalt. The vacuum tower is equipped with anBHiottthree-stagesteam jet ejectormaintaining 13 Hg absolute pressure when handling 2000 lb per hr of 230 F gas, consisting of 1000 lb per hr steam, plus 400 lb per hr condensable hydro carbon vapor, plus 600 lb per hr ofair or equiva lent noncondensable gases. Fluid Catalytic Gt'acking Unit: The fluid catalytic cracking process has the ability to produce greater yields of gasolioe of a high-octane rating than the thermal cracking process. In the fluid process, finely divided catalyst is suspended in gas, or vapor, or air, so The Blllett multi-stage, turbine-driven centrifugal Heuitr which was in stalled in connection imtb thefluid catalytic wilt, It Is rated 30,006 c/m, compressing airto a dischargepressure of26psig.lt is operated 24 hours a day at 4730 rpm by the Btlioft direct-connected 3140-bp steam turbine, Summer 1930