METHOD FOR HYDROTHERMAL CRACKING OF COAL

摘要

PROBLEM TO BE SOLVED: To improve oil yield when a plurality of kinds of coal are subjected to hydrothermal cracking. SOLUTION: A method for hydrothermal cracking of the coal comprises using a reactor of the upper and the lower two-chambers and two-stages and charging oxygen or the oxygen and steam and the coal and producing a gasification gas by partial oxidation in the lower stage and charging the coal and hydrogen into the produced gasification gas and producing a gas, an oil and char by hydrothermal cracking in the upper stage. The method is characterized in that the coal with a lower coalification degree than that of the coal charged into the lower stage is used as the coal charged into the upper stage. COPYRIGHT: (C)2008,JPO&INPIT