The major objective of the Phase 1 test program is to confirm the feasibility of the MTCI bimodal particle size approach to enhance particulate control by acoustic ash agglomeration. An ancillary objective of the Phase 1 effort is to demonstrate and confirm the feasibility of an acoustic field to enhance sulfur capture by increasing sorbent reactivity. The program will demonstrate the effectiveness of a unique approach which uses a bimodal distribution composed of large sorbent particles and fine fly ash particles to enhance ash agglomeration and sulfur capture at conditions found in direct coal-fired turbines. The work will extend the concept from the demonstration of feasibility (Phase 1), through proof-of-concept (Phase 2) to the construction (Phase 3) of a coal-fired pulsed combustor with in-furnace sorbent injection. In view of the potentially large repowering market in the US, several possible configurations were formulated and evaluated for application to the repowering market. Based on discussions between the DOE/METC team members and MTCI staff; seven different configuration were proposed for further evaluation. The technical and market issues associated with each of these configurations were identified and summarized. An initial system simulation test for the system operating at inlet air temperatures of 700--800 F as for a gas turbine application was conducted, indicating that acoustic performance can be further improved by modifying gas injectors. Development of the advanced vortex aerovalve continued.