LTAG技术中加氢单元的选择与对比分析

SELECTION AND COMPARATIVE ANALYSIS OF HYDROGENATION UNIT IN LTAG PROCESS

对比了LTAG工艺工业应用过程中,不同类型加氢装置的应用结果。作为调整柴汽比的重要手段,LTAG的加氢单元可以应用加氢精制、重油加氢及加氢改质等装置,并与催化裂化装置联合,以实现压减柴油产量、增加汽油和液化气产量的目的。加氢单元选择不同的模式,导致加氢LCO性质不同,进而影响精制(或改质)柴油在LTAG过程中的转化率及选择性。在应用过程中,需要结合加氢单元的操作条件,根据加氢LCO性质变化,以及操作范围限定等因素的影响,针对性地调整FCC单元的操作条件才能获得最佳的使用效果。

The results of different types of hydrogenation units in the industrial application of LTAG process are compared.As an important means to adjust the ratio of diesel to gasoline,the hydrogenation unit of LTAG can adopt units such as hydrofining,heavy oil hydrotreating and hydro-upgrading,which can be combined with the catalytic cracking unit to achieve the purpose of reducing diesel and increasing the output of gasoline and LPG.Different modes of hydrogenation unit will lead to different properties of hydrogenated LCO,which will affect the conversion and selectivity in LTAG process.In the process of application,it is necessary to adjust the operating conditions of the FCC unit in accordance with the operating conditions of the hydrogenation unit,the changes in the nature of the hydrogenated LCO,the limitations of the operating range and other factors to obtain the best effect.