Performance of Additive JJZ-1 on Antifouling and Liquid-Improving in Delayed Coking Process

摘要

Based on an antifouling and liquid-improving mechanism, the additive JJZ-1 was developed. The experimental results indicated that the additive JJZ-1 had evident effect on antifouling and liquid improving. Adding 100 - 400 mu g $$ g~(-1) additive JJZ-1 into five vacuum residues, the formation of foul in coking furnace tube can effectively reduced by 0.21 - 0.22 percent. The liquid oil yield increased by 1.50 -1.68 percent in the delayed coking process. The coke yield and gas yield decreased by 0.80 - 1.10 percent and 0.55 - 0.81 percent, respectively. The characteristics of JJZ-1 additive were analyzed, and the mechanism for antifouling and liquid-improving was discussed.