渣油加氢装置高苛刻度运行分析

对中国石化扬子石油化工有限公司2.0 Mt/a渣油加氢装置第一周期的运行情况及存在的问题进行了分析,并提出处理措施。运行结果表明:在处理量为设计负荷的104%的情况下,渣油加氢装置的各项技术指标均满足设计要求;FZC系列催化剂具有较高的脱杂质活性和加氢活性,加氢渣油的密度、硫含量、氮含量、残炭和金属含量均达到或优于设计值,是优质的催化裂化原料。针对装置原料劣质化、热高压分离器气体夹带重烃、循环氢脱硫塔发泡及高压换热器结垢等情况,采取相应的对策,取得了较好的效果,初步解决了装置高苛刻度运行过程中存在的问题。

HIGH SEVERITY OPERATION ANALYSIS OF RESIDUE HYDROTREATING UNIT

The first cycle operation of 2.0 Mt/a residual oil hydrotreating unit was analyzed. The operation results for 15 months show that in the case of capacity 104% of the design load, FZC series catalysts showed good activities in hydrogenation and metal removal. The density, contents of S and N, residual carbon, asphaltene and metals (Ni+V) of the product can meet or even be better than the design values and can be used as a catalytic cracking feed. The negative effects of the inferior raw material, the heat high pressure separator gas entrainment with heavy hydrocarbon, and the circulating hydrogen desulfurization tower foaming, and the high pressure heat exchanger fouling are all overcome by taking corresponding optimization measures.