OCR Text |
Show and landfill disposal of the ash. High-Temperature Catalytic Baghouse Description The baghouse is designed to operate in a hot flue gas environment, at temperatures up to 9{)()OF. The hot flue gas entering the baghouse is distributed to six individual modules through an inlet manifold. Each module can be isolated from the inlet and outlet manifolds with butterfly dampers. The baghouse was designed to be cleaned either on-line or off-line with a pulse-jet cleaning system. In addition, the bag cleaning cycle may be cleaned manually or in an automatic cycle. In the automatic mode, the bag cleaning frequency can be controlled by baghouse differential pressure, timer, or a combined differential pressure/time cycle. Each module will contain 42 full-size, integrated bag/catalyst arrangements. The NO 1 reduction catalyst is integrated into each bag filter assembly. Because the baghouse will consist of multiple modules with commercial-size, integrated bag/catalyst arrangements, the field demonstration will represent one train of SNRB baghouse modules. A full-scale commercial SNRB application would consist of a number of baghouse trains with more baghouse modules or with modules containing more bags. FIELD DEMONSTRATION TESTING 1-- The heart of the entire project centers around the actual field demonstration operation and testing, data reduction, and evaluation of the results to assess the feasibility of the SNRB technology. The anticipated duration of the field demonstration is approximately 8 months. Both parametric and operability testing of the field demonstration unit will be conducted. The objective of the field testing is to evaluate SNRB performance over an extended operating period. Measurements to be taken during the testing include S02' NO l' and 02 concentrations at the inlet (before sorbent and ~ injection), baghouse inlet, and baghouse outlet, particulate emissions, ~ slippage, acid dew point, pressure drop, electrical power consumption, and sorbent, coal, and baghouse solids analyses. The operational and performance data for the SNRB demonstration facility will be analyzed to detenrune overall S02 and NO 1 removals and the overall effectiveness of the SNRB process. A fmal detailed report will be submitted upon completion of the evaluation. The work described in this paper was not funded by the U.S. Environmental Protection Agency (EPA) and therefore the contents do not necessarily reflect the views of the Agency and no official endorsement should be inferred. ACKNOWLEDGMENTS The authors are grateful to the U.S. Department of Energy (DOE) and the Ohio Coal Development Office (OCDO) for supporting this demonstration project In addition, we thank 3M for supplying the Nextel bags and technical assistance, Norton Company for providing the zeolite SCR catalyst and technical support, and Ohio Edison for hosting the field demonstration facility. |