渣油加氢与重油催化裂化组合工艺优化探讨

Discussion on Process Optimization to Residuum Hydrogenated Combined with RFCC

渣油加氢和重油催化裂化(简称催化裂化)是某炼厂的核心装置。对2套装置的产品结构、收率和催化裂化催化剂单耗等参数进行了分析,认为其效益最大化控制点为:渣油加氢残炭脱除率控制在37%～42%,催化裂化原料残炭值不宜高于6.0%,最佳控制值为5.5%以下;渣油加氢金属(镍+钒)脱除率控制在60%～65%,催化裂化原料金属(镍+钒)含量不宜超过16μg/g,最好控制在15μg/g以下。

Residuum hydrogenated and fluid catalytic cracking （FCC） for residual oil are two of important refining plant. It is analyzed that the product components in the plants, the yield and consume quota of catalyst for the catalytic cracking. The control parameters of profit maximizing are that removal rate of carbon residue is from 37% to 42% in the hydrogenated, optimal value of carbon residue in feedstock oil for FCC, under 5.5%, removal rate of nickel and vanadium at 60% to 65% in residuum hydrogenated, optimal value of the nickel and vanadium in the feedstock oil, under 15 μg/g.