改造现有装置实现催化柴油加氢裂化生产高辛烷值汽油的可行性分析

选择性加氢裂化技术可以由劣质催化裂化柴油（催化柴油）最大量生产高辛烷值汽油组分，同时还可以生产低硫清洁柴油调合组分，实现劣质催化柴油高效转化。利用现有装置改造为催化柴油加氢裂化装置是推广该技术的有效途径。研究表明，利用柴油加氢精制装置改造为催化柴油加氢裂化装置主要限制因素在于产品分布和工艺参数的巨大差距，需较大幅度降低装置处理量，改造工程量较大；利用中压加氢裂化装置改造为催化柴油加氢裂化装置，产品分布和工艺参数的差距相对较小，改造工程量较小。各炼厂可根据具体情况选择适宜装置进行相应改造，实现催化柴油高效转化。

FEASIBILITY OF RECONSTRUCTION EXISTING UNIT FOR PRODUCING GASOLINE FROM LCO

The LCO selective hydrocracking technology provides a new process to efficiently converse LCO, producing high-octane gasoline and low-sulfur diesel. It is an effective way to popularize this technology by reconstructing existing diesel hydrotreating unit to LCO hydrocracking unit. The main limiting factors for the reconstruction of diesel hydrotreating unit to LCO hydrocracking unit are the huge gaps in product slate and operating parameters. The reconstruction requires a significant reduction in the processing capacity and a large amount of project investment. However, the above gap is relatively small between medium pressure hydrocracking unit and LCO hydrocracking unit, the reconstruction can be done with small project investment and good economic benefits.