| 摘要 |
FIELD: chemistry. ^ SUBSTANCE: dust coal and high-temperature gasifying agent are fed into a coal gas generator to obtain coal gas. Heat exchange takes place between coal gas coming out of the coal gas generator and the gasifying agent to obtain a high-temperature gasifying agent. After heat exchange between the coal gas and the gasifying agent, heat exchange takes place between coal gas and water to obtain steam. The obtained steam is a component of the gasifying agent. Dust coal is separated and fed back into the coal gas generator. After heat exchange with water and further removal of dust and desulphuration, coal gas is output. ^ EFFECT: invention enables to lower coal consumption and increase heat value of the produced coal gas. ^ 10 cl, 1 dwg, 1 tbl |
