Abstract: In order to broaden the resource of olefin production in petrochemical industry, and to utilize the heavy oil for high value, a serious of experiments for residuum to chemicals (RTC) technology was carried out on a pilot plant. The results showed that as compared with deep catalytic cracking (DCC) technology, the yields of LPG and propylene in RTC process were enhanced remarkably, and the yield of dry gas and coke were reduced when processing hydrotreating residuum blended feedstock. The RTC technology had good effect on the product distribution and product selectivity when processing heavier hydrotreated residuum.

Key words: deep catalytic cracking, propylene, light olefin, dry gas, coke