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• and wastes. Schematic drawings and brief descriptions of the <br />processing units follow. <br />PYROLYSIS AND OIL RECOVERY UNIT <br />This unit converts the kerogen content of raw shale into hydro- - <br />carbon vapors and liquids. The hydrocarbons are separated by <br />fractionation and sent to various upgrading units. The processed <br />shale is transported from this unit to a disposal area. <br />The pyrolysis unit will consist of 6 individual "TOSCO II" retor- <br />ting trains each capable of processing 11,000 tons per day of <br />raw shale. The processed shale is cooled in a rotating drum <br />steam generator. The cooled processd shale is moisturized to <br />approximately 11 - 15 percent moisture content in a rotating <br />drum moisturizer. Water, at the rate of 1,500 gallons per minute, <br />• for the moisturizing process, will be brought from various units <br />within the system. The foul water stripper will remove NH3, HzS <br />and COZ gases from the water to be used. Steam and processed <br />shale dust produced in the moisturizing process are passed through <br />a venturi wet scrubber to remove the dust before discharging to <br />the atmosphere. The moisturized processed shale is transported <br />by a covered conveyor to the Davis Gulch processed shale disposal <br />site. <br />In the oil recovery unit, hydrocarbon vapors are separated by <br />fractionation into gas, raw naphtha, gas oil, and bottoms oil. <br />The gas and raw naphtha streams are sent to the gas recovery <br />and treating unit for gas treating and naphtha stabilization. <br />The gas oil is sent to the gas oil hydrogenation unit. The bot- <br />toms oil is sent to the Coker unit. Moisture in the gas stream <br />is condensed and sent to the foul water stripper which removes <br />the absorbed ammonia and hydrogen sulfide. The stripped water <br />. is used in the pyrolysis unit for moisturizing processed shale. <br />D-13 <br />