The characteristics of the coke produced of the heavy resin thermal reaction is that high aromaticity products form intermediate products and then condense to coke in low molecular weight products.
The coke deposited due to thiophene impenetrated into all the pores and some of them could form mechanical pore on catalyst surface.
含噻吩原料加氢裂化生成的积炭，存在于不同孔径的孔中，在催化剂表面形成少量机械孔。
3
There are two main problems in the process. Coal consumption of COREX is too much and coke is still used to supply effective calorific value of coal and form a fix bed with carbon.