Patent ID: 9074138
Filing Date: 2015-07-07
Classification: C10B,C10G,C10L,F26B,Y02P

Abstract:
1. A process for treating coal, the process comprising: drying coal in a drying step; pyrolyzing the coal in a dual zone pyrolyzer to form coal char, including venting effluent from each zone of the pyrolyzer; subjecting the effluents to a condensation process to separate the effluents into liquids and on-gases; blending the on-gases with other available gases to achieve a composition of blended on-gases having a specific heat of at least about 0.50 Btu/lb-° F. (2.013 kJ/Kg ° C.) at 1200° F. (649° C.); and recirculating the blended on-gases into the pyrolyzer.