催化裂化装置的工艺技术改造

TECHNICAL REVAMPING OF CATALYTIC CRACKING UNTT

高桥石化公司上海炼油厂的0．84Mt／a。蜡油催化裂化装置改造为掺30％减压渣油的0．9Mt／a。重油催化裂化装置，采用了精心组合的一系列先进技术，经过一个周期运转，全面达到设计指标，轻质油加上液化石油气收率达89．13％，干气加损失仅3．64％。采用国产CC－15催化剂，用大庆油生产出合格的90号车用汽油，停工检查时，沉降器内无结焦。达到（部分项目超过）了设计预期目标。年增净利润RMB52．97×106，并为上海市汽油无铅化作出了贡献。多项指标达到了国内炼制同类原油的重油催化裂化装置领先水平。

A 0. 84Mt/yr gas oil FCC unit in Shanghai Refinery of Gaoqiao Petrochewhcal Company was trans-formed into a 0. 90Mt/yr FCC unit processing hevVy oil blended with 30% vacuum residue and a series of advanced tcchnohe were adopted. Afer an operahng cycle, the designed specification reqUiremnts have been met comprehen-sively.The yield of light oils plus liquefied peboleum gas was up to 98. 13% while dry gas plus loss was only 3.64%. Qualilied 90 motor poline was produced from Daqing crude with domestic CC-15 catalyst. During shut-down inspection no coking was observed in the settler. Desital design objective was fulfilled with some items overful-filled.Yeary net profit has increased by RMB 52. 97×106 and contrihution has been made towards lead free gaso-line in Shanghai. Som figures have reached the advanced level in comparison with domestic heavy oil catalytic cracking units processing the same crude.