A Probe into Process for Maximization of Low-carbon Olefins via Co-processing of Methanol and Heavy Oil

From the viewpoint of process specifics and thermodynamics, this article has put forward a route for maximization of low-carbon olefins via co-processing of methanol and heavy oil. Catalytic cracking experiments on co-processing of methanol and heavy oil at different ratios in a fixed fluidized bed reactor had been conducted. Test results have revealed that when 12.5% of methanol was blended to the heavy oil a good products distribution and relatively higher yield of low-carbon olefins could be obtained. The overall yield of low-carbon olefins could reach 50.16%, with the yield of ethylene, propylene and butylene equating to 5.47 %, 28.93% and 15.76 %, respectively. Key words: catalytic cracking; methanol; co-processing; low-carbon olefin