Abstract
Hydropyrolysis of different types of high-boiling hydrocarbon fractions (straight-run distillates of different boiling range, dearomatized fractions and a hydrocracked fraction) was studied and the results were compared with pyrolysis (steam cracking) carried out under similar operating conditions. In all cases, a substantial increase in the yield of ethylene, a total yield of olefins and a total yield of C2 hydrocarbons, were observed. The possibility of limiting the amount of H2O by replacing it with H2, CH4 or N2, has been demonstrated. Hydropyrolysis was also shown to be effective in the case of a feedstock pretreated by dearomatization or hydrocracking.
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