Research progress of hot gas filtration, desulphurization and HCl removal in coal-derived fuel gas: A review

▸ Research progress of hot gas filtration, desulphurization and HCl removal is highlighted. ▸ Hot gas cleaning has concentrated on developing regenerable sorbents. ▸ Shrinking core model can be applied to H2S and HCl removal by sorbents. ▸ Simultaneous removal of multiple contaminants could be achieved by a combined concept.