| OCR Text |
Show 2.) Gas Desulfurization Processes Large amounts of technical data were coUected from the literature, vendors, and refineries on fuel gas desulfurization processes and their removal capabilities. The different sulfur removal processes that were investigated vary considerably in their abilities to remove specific sulfur compounds. With an RFG that contains significant amounts of aU three of the major sulfur compounds (HzS, COS, and RSH's); a combination of processes is usually indicated. In environmental terminology, the design of an upgraded RFG desulfurization scheme would be very "refineryspecific". Some of the processes investigated that show potential in the LA refineries include : fuel gas compression, enhanced scrubbing solvents, hydrogenationlhydrolysis, and regenerative caustic washes. Potential technologies were compared as to feasibility, removal efficiency, economics and operating history. Preliminary designs and cost estimates of alternate process schemes were presented. The process scheme costs (both capital and operating) were compared from a "cost effectiveness" (S/lb SO~ standpoint. 3.) PHot/Refinery Testing Since most of the processes considered have little or no track record in refinery fuel gas service, pilot and/or in-plant testing will probably be required. A number of test programs are currently being performed by some of the LA refiners. -3- |
