MCP技术的工业应用

Commercial application of MCP process

介绍了重油选择性裂解多产丙烯MCP技术在ARGG装置上的应用情况。MCP技术强调了烯烃选择性转化区的优化,在第一提升管产生高烯烃的汽油组分,经过轻、重组分的分离,将轻汽油在第二提升管中进行回炼,降低汽油烯烃的同时多产目的产品丙烯。回炼油在烯烃选择性转化区轻汽油进料之前先与高温催化剂接触转化,形成一定积炭,从而强化择形活性分子筛对轻汽油的选择性转化,达到增产丙烯的目的。改造后,产品分布得到了进一步优化,丙烯、异丁烯在液态烃中的体积分数提高约24.4%,汽油辛烷值提高约1个单位,柴油质量有所提高,十六烷值增加约6个单位,经济效益明显。

The commercial application of MCP（Maximizing Catalytic Propylene） process in the revamping of an existing ARGG unit in Yangzhou Petrochemical Co.,Ltd is described.MCP process highlights the optimization of highly selective conversion zone for olefins.The gasoline,rich in olefin and generated in the first riser,is separated to two fractions,the light gasoline and the heavy gasoline.The light gasoline is fed to the second riser,where the olefins in gasoline are converted into objective product of propylene.When contacting hot regenerated catalyst with heavy recycle oil（HCO） prior to light gasoline feed in the selective conversion zone,the coke deposited on the catalyst can enhance selective conversion of gasoline by the shape selective molecular sieve catalysts,which results in increased propylene production.The performance test results demonstrate that the product distribution is optimized.The mass concentration of the propylene and the isobutylene in the LPG is increased by about 24.4%.RON of the gasoline and cetane number of the diesel are elevated by 1 and 6 units respectively.The economic benefits is significant.