The lime-stone powder was selected as desultphurizer for most of CFB boilers

it is difficult to be realized for power plants located far from the place of lime-stone production

hence

seeking for a new desulphurizer is particularly important for these power plants.Through study on the desulphurization mechanism and desulphurizing behavier of carcium carbide

as well as the semi-industrialized test

it is discovered that the desulphurizing behavior of carcium carbide sludge(CCS) is obviously better than that of lime-stone.The desulphurizing behavior of mixedly burning CCS is closer to that of the pure CCS.In case of mixedly burning 60% CCS

the desulphurizing behavior is slightly better than that of mixedly burning 40% CCS.During the time of popularizing the test result to actual boiler

it is necessary to fully consider the influence of separating efficiency in separator and the particle size of CCS.