Thermal processing of high ash bituminous solid fuels - by low temp. carbonisation, gasification and combustion of residue

摘要

The gasification residue passes the after-combustion sauge in an aero-eruption condition and the hot ash with the flue gases is discharged as an aerosol. A share of the aerosol contg the fine ash fraction is used to control the consumption of heat transport medium. This eliminates the imperfect after-combustion of polydisperse gasification residue with a low content of combustible matter in a fluidised bed. Environmental pollution by fine particles emission is reduced and coarse fractions are utilized as heat transport medium.