The research is aimed at study and solution of problems (thermodynamic constraints, reactivity, capacity and deactivation of the sorbents, textural changes, interferences of HCl) in removal of sulfur compounds from fuel gas (gasification of coal-biomass) by solid sorbents at temperatures 400-600 oC. A soda-based sorbent will be used for pre-cleaning of syngas and for study of important effects of accompanying gases (mainly, H2S, naphthalene) and temperature on the sorption process of HCl. Sorbents based on ZnO and CeOx (on carriers) will serve for removal of H2S, COS, and thiophene and for study of the intereferences (CO2, H2O(g), HCl, naphthalene). For characterization of sorbents, TG, XRD, SEM/EDS, textural and other tools will be employed. The sorption reactions will be studied by means of a differential, fixed-bed reactor and by an integral fluidized-bed reactor. Theoretical models with simplified reaction kinetics and particle structure for description and analyses of sorption process in fixed and fluidized bed will be developed and solved.