Abstract:In order to solve the pollution problems of gas and solid wastes, which are the products of coal gas purification, the combustion characteristics of different compositions, including the gas wastes, the tar oil with dust, and filtration residue are analyzed.By analysis of the feasibility of mixed burning of the gas and solid wastes in power station boilers, difficulties and countermeasures in mixed burning are pointed out in combination with the process requirements of the coal-chemical gasifiers, and examples of mixed-burning projects in the coal-chemical enterprises.Finally improvement schemes and suggestions are proposed.