LOW SEVERITY COPROCESSING OF CHINESE COALS

For coprocessing reactivity evaluation three subbituminous Chinese coals in a 30 % feed blended with 70 % Arab-Mix VR were coprocessed at 6 MPa H-2initial, at 440-degrees-C for 0-120 min without additives or catalyst. Further noncatalytic experiments were concentrated on Yilan coal with variation of feed ratio, hydrogen pressure and temperature at residence times 0, 15, 60 and 120 min. At a feed ratio of 30/70 only Yilan coal was reacted with the addition of a ''red-mud' catalyst at the same set of conditions. At suitable conditions this coprocessing results to at least 50 % of distillable heavy product oil plus a substantial share of naphtha and some gases at a hydrogen-uptake of less than 1.0 %.