摘要
以中国石化塔河分公司（简称塔河分公司）重整预加氢后分馏塔塔顶拔头油（轻石脑油）作为原料进行深度脱氮吸附剂和脱氮工艺的研究，考察吸附温度、吸附压力、空速对脱氮效果的影响，确定的最佳脱氮工艺条件为：吸附温度40℃、吸附压力0．5～1．0MPa、体积空速5．0～10．0h。该技术在塔河分公司300kt／a异构化装置上的工业应用结果表明：以重整预加氢后分馏塔塔顶拔头油作为原料进行深度脱氮处理后，氮质量分数小于0．1μg/g，能够满足后续低温异构化工艺对氮含量的苛刻要求，得到的异构化产品RON较原料增加2，）个单位。
A new denitrogenation agent and a relative process were developed to deeply remove basic nitrogen impurities from the light naphtha （topped oil） of distillation column of reforming feed pre- hydrogenation unit. Through the lab test in a fixed-bed down-flow reactor, the optimal conditions of de- nitrogenation process were determined as follows： adsorption temperature of 40 ~C, pressure of 0.5-- 1.0 MPa, space velocity of 5.0--10.0 h-1. The technology has been successfully applied in an isomerization unit with 300 kt/a of SINOPEC Tahe Petrochemical Co. The results show that the nitro- gen content of the light naphtha is lower than 0.1 μg/g, meeting the requirement of the subsequent low temperature isomerization process. The octane number of the isomerization product is 20 percentage points higher than that of feed.
出处
《石油炼制与化工》
CAS
CSCD
北大核心
2016年第2期65-68,共4页
Petroleum Processing and Petrochemicals
关键词
拔头油C5/C6异构化
深度脱氮
分子筛
topped oil
C5/C6 isomerization
deep denitrogenation
molecular sieve
