DEVELOPMENTAL STATUS OF BHEL HIGH-TEMPERATURE HIGH-PRESSURE (HTHP) CIRCULATING BED GRANULAR FILTER (CBGF)

Granular bed filtration is one of the processes under development for separation of fine dust at relatively high temperatures and pressures, for application in coal based combined cycle power plants. Bharat Hea vy Electricals Limited (BHEL) have installed a test facility to evalua te the performance of a Circulating Bed Granular Filter (CBGF). Detail s of the test facility and some of the important test results on the p erformance of the filter and the on-line granule circulation system ar e reported in this paper. Work related to the scale-up of the CBGF and the granule circulation system are presently underway.