Production of generator gas from solid fuels

Analysis of literature data indicates that the production of generator gas from solid fuels is very promising. With appropriate preparation, renewable energy sources such as peat, sapropel, and solid domestic waste may be used for this purpose. The deficiencies of the current production technologies for generator gas are outlined. Experience in the production and use of generator gases is described. Criteria that must be satisfied by new technologies for solid-fuel processing are developed. The most promising approach is found to be gasification in a bubbling slag bath. A system for the preparation and gasification of solid fuel in slag melt is presented. Calculations show that the production of generator gases in a bubbling mixed-fuel system is economically efficient. The production costs of thermal and/or electrical energy by the combustion of generator gas derived from regular lignite are 35–40% less than for the combustion of natural gas.