重油催化裂化柴油吸附脱氮-加氢精制组合工艺的开发  

DEVELOPMENT OF COMBINATION ABSORPTION-HYDROGENATION PROCESS FOR FCC LCO WITH HIGH BASIC NITROGEN

作　　者：梁永辉[1] 荆军航[1] 杜伟[2] 焦伟[1] 

机构地区：[1]中国石油天然气股份有限公司锦西石化分公司研究院,辽宁省葫芦岛市125001 [2]北京三聚环保新材料有限公司,北京市100080

出　　处：《炼油技术与工程》2007年第6期12-15,共4页Petroleum Refinery Engineering

基　　金：中国石油天然气股份有限公司资助项目(030802-04-02)

摘　　要：在试验室固定床小型试验装置上,采用自行研制的DNSiAl-004硅铝吸附剂,对碱氮质量分数为100～190μg/g的重油催化裂化柴油进行吸附脱碱氮,吸附剂饱和后用溶剂M进行脱附再生,最后针对脱碱氮柴油进行加氢精制。结果表明:DNSiAl-004吸附剂对柴油中的碱氮具有较高的选择吸附性,在脱碱氦率不小于80％的前提下,吸附剂的碱氮容量为0．45％,单程吸附柴油收率大于99％;在温度40～50℃的范围内,溶剂M能够对饱和吸附剂进行较好的脱附再生,经过40次吸附-脱附后,DNSiAl-004吸附剂的碱氮容量仅下降6．7％,同时溶剂M回收后可循环使用;脱碱氮柴油经过加氢精制后,硫质量分数降到50μg/g以下,达到了欧Ⅳ柴油硫含量指标的要求。On a small laboratory fixed-bed pilot plant, the FCC LCO with 100-190 ppm basic nitrogen was denitrogenated with newly-developed DNSiAl-004 silica-alumina adsorbent. The saturated absorbent was regenerated by solvent M through desorption. The denitrogenated LCO was finally hydrotreated. The results show ）. that the DNSiAl-004 adsorbent has higher selectivity and greater absorption performance for basic nitrogen. At a denetrogenation rate higher than 80% , the absorbent＇ s basic nitrogen capacity is 0.45% and diesel yield of single pass absorption is over 99%. At temperatures from 40 to 50 ℃, solvent M demonstrates good desorption of saturated absorbent. The basic nitrogen capacity is only reduced by 6.7 % after 40 absorption and desorption cycles. The solvent M can be recycled for re-utilization. The sulphur in hydrotreated denitrogenated diesel is less than 50 ppm, which meets the Euro Ⅳ standard for diesel.

关 键 词：催化裂化柴油 脱碱氮 吸附剂 脱附再生 加氢脱硫 

分 类 号：TE624.41[石油与天然气工程—油气加工工程]