CLEAN FUEL GAS MADE BY THE GASIFICATION OF COAL

摘要

A fuel preparation apparatus in which coal (2) or other carbon containing material is converted to an environmentally acceptable fuel gas by the reaction with air and steam at a pressure of from 20 to 90 pounds per square inch absolute. The fuel is suitable for use in a gas turbine or a boiler. The apparatus includes a coal delivery system (1), a coal crusher (4), coal storage bins (7), lock hoppers (7), a gasifier vessel (10) of two stages, liquid and solid separator vessels, heat and steam recovery vessels, equipment to control the flow of steam and air to the gasifier so as to maintain fuel quality, and a gas clean up plant (28) that will remove environmentally unacceptable components of the gas such as hydrogen sulfide or other sulphur containing compounds, tars and light oils.