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Show Ohio Edison's R. E. Burger Plant located near Shadyside, Ohio. The SNRB baghouse consists of six individual modules each containing 42 bag/catalyst assemblies, compared to the single laboratory pilot module containing 12 similar bag/catalyst assemblies. It is designed to handle about 30,000 ft3jminute of flue gas. Other major features include: • A Bailey Network 90 system for integrated process control • Automated ammonia injection system • Five sorbent injection locations • A propane-fued heater for control of the sorbent injection temperature • Baghouse inlet and outlet flue gas heat exchangers to pennit flue gas temperatures to be accurately controlled • Automated sorbent feed and ash disposal systems A schematic of the 5 MW e SNRB field demonstration facility is shown in Figure 8. A more detailed description of the facility is provided elsewhere(4). Filter Fabric Development Initial economic analysis and pilot investigations identified the critical role the filter bags will play in the technical and economic viability of the SNRB process on a commercial scale. The filter fabric assessment test program is designed to obtain extended tenn durability data for several alternative high temperature bag fabrics. The test will also include an evaluation of alternative catalyst designs. The SNRB laboratory pilot baghouse will be moved from B&W's Alliance Research Center to the City of Colorado Spring's Martin Drake Plant located in Colorado Springs, Colorado. The pilot baghouse will be operated continuously over at least a one-year period. Continuous operation will be interrupted periodically to pennit removal and examination of selected filter bags for analysis of changes in the bag fabric characteristics over time. Intennediate results from the pilot-scale test will be used to support consideration of a possible extension of the base demonstration facility test plan in which an alternative bag fabric would be evaluated under actual SNRB operating conditions. The pilot baghouse will draw flue gas from the economizer outlet of the 145 MW e coal-fired boiler. Inlet flue gas temperatures are expected to range from 650' to 750"F. The baghouse will contain 12 full-scale bags (6 inches in diameter, 20 feet long). Three alternative bag fabrics, as well as alternative weave patterns, will be evaluated. A standard pulse-jet bag cleaning cycle based on tubesheet pressure drop will be maintained. The test will not involve full simulation of the SNRB process since S02 sorbent addition and ammonia injection will not be included. However, significant data on bag fabric durability at elevated temperatures under nonnal cleaning pulse flexure conditions will be obtained. EXlSllNG ,.....-EX_I_STl_N_G_FL_U_EW_O_R_K ______ -.--_-.t ElECTROSTATlC ~_--, PRECIPITATOR (ESP) RETURN SUPSTREAM FLUE GAS EXHAUST MONITOR FAN ~--------------~ CONVEYING SYSTEM SELF UNLOADING SORBENT TRUCK Figure 8. Schematic of the 5 MW, SNRB Field Demonstration Facility 9 BAG HOUSE SOUD WASTE TO DISPOSAL FAN |
