催化裂化吸附转化加工焦化蜡油工艺的研究与开发  

DENITRIFIED CATALYTIC CRACKING (DNCC) TECHNOLOGY FOR COKER GATCH PROCESSING

作　　者：张瑞驰[1] 施文元[1] 

机构地区：[1]石油化工科学研究院

出　　处：《石油炼制与化工》1998年第11期22-27,共6页Petroleum Processing and Petrochemicals

摘　　要：为提高催化裂化装置加工焦化蜡油的经济效益，石油化工科学研究院研究开发了催化裂化吸附转化加工焦化蜡油工艺（ＤＮＣＣ），经过实验室中小型试验研究和石家庄炼油厂９００ｋｔ／ａ重油催化裂化装置工业应用试验，结果表明，ＤＮＣＣ工艺可有效地减弱焦化蜡油中碱性氮化物等毒物对裂化催化剂酸性活性中心的毒害，同时起到提升管反应急冷和吸附转化焦化蜡油的作用。该技术可提高转化率，改善产品选择性。在掺炼２５％焦化蜡油时，ＤＮＣＣ与常规催化裂化掺炼焦化蜡油相比，（液化气＋汽油＋柴油）产率提高１．５个百分点以上，汽油ＲＯＮ提高０．３～０．７。开辟了一条加工高氮原料油的方法。Denitrified Catalytic Cracking (DNCC) technology was developed for processing more coker gatch in FCCU to increase economic effect. Through laboratory and pilot plant studies, the technology was tested in a 800 kt/a resid FCCU in Shijiazhuang Refinery. The results showed that DNCC can effectively decrease the basic nitrogen poisoning on the acid sites of cracking catalyst to convert more coker gatch, and it can also be used as a quench at an upper part of the riser. The technology can increase cracking conversion and improve the product selectivites. DNCC in comparison with conventional FCC with a feedstock contained 25% coker gatch, the yield of LPG plus gasoline plus LCO of the former was improved by more than 1.5% with a gasoline RON increment of 0.2￣0.7.

关 键 词：催化裂化 脱氮 焦化蜡油 原油 

分 类 号：TE624.56[石油与天然气工程—油气加工工程]