| 摘要 |
1. A process of gasifying caking solid fuels under a pressure between 5 and 150 bars with gasifying agents which contain oxygen, water vapor and/or carbon dioxide, wherein the fuel formes a fixed bed which slowly moves downwardly, the gasifying agents are introduced into the fixed bed from below, and the incombustible mineral constituents of the fuel are withdrawn under the fixed bed as solid ash or liquid slag, fine-grained caking fuels are formed with the aid of a liquid into substantially spherical pellets which are 5 to 50 mm in diameter, characterized in that the pellets which are formed from fine-grained fuel with a grain size below 7 mm, before gasification are provided with a substantially closed covering layer of fine-grained non-caking material selected from cement, ash obtained from the same or a different fuel, dolomite, bentonite, lime, montmorillonite or zeolites, said covering layer has a thickness of 0.2 to 2 mm. |
