重油催化裂化装置CRC技术研究

Research on CRC Technology of Heavy Oil Catalytic Cracking Unit

为解决某重油催化裂化存在的再生温度、反应温度和剂油比的矛盾问题,提出了在再生线路上增加取热设施,降低再生剂温度,进而降低油剂接触区的混合温度的技术改造方案(CRC-FCC),并预测了改造效果。该技术实现了"低温接触、大剂油比、高催化剂活性"的催化裂化反应要求,改善了反应选择性,可以提高轻油收率和产品质量,改善产品分布,降低装置能耗,提高催化裂化装置的经济效益。

In view of the existing problems of regenerative temperature,reaction temperature and oil ratio of the catalytic cracking unit of heavy oil in China,the technology of circulating catalytic cracking（ crc-fcc） was introduced. This paper analyzes the present situation of catalytic cracking of a heavy oil,puts forward the technical modification plan of crc-fcc,and predicts the transformation effect. The technology achieves the ＂low temperature contact,big oil ratio,high catalyst activity＂of the catalytic cracking reaction,and improves the reaction selectivity. It can enhance the light oil yield and product quality,improve product distribution,reduce the unit energy consumption and improve the economic benefits of catalytic cracking unit.