焦化蜡油中含氮化合物的加氢反应性能  

HYDROGENATION PERFORMANCE OF NITROGEN CONTAINING COMPOUNDS PRESENT IN COKER GAS OIL

作　　者：温世昌[1] 周亚松[1] 魏强[1] 

机构地区：[1]中国石油大学重质油国家重点实验室,北京102249

出　　处：《石油学报（石油加工）》2008年第5期496-502,共7页Acta Petrolei Sinica(Petroleum Processing Section)

基　　金：国家重点基础研究发展规划"973"项目(2004CB217807);中国石油天然气集团公司科技项目(06A50103)资助

摘　　要：以NiW/CTS为催化剂,在固定床加氢微反装置上考察了反应温度(633～693K)、压力(5～8MPa)、停留时间(0.5～2h)和氢/油体积比(400～1200)对辽河焦化蜡油中碱性和非碱性含氮化合物的加氢脱除率的影响规律,并对反应数据进行了宏观动力学分析。结果表明,提高反应温度、压力和停留时间都有利于含氮化合物的脱除,其中碱性氮比非碱性氮更容易脱除,受反应条件的影响也更大;随着氢/油体积比的增加,含氮化合物的加氢脱除率呈现先增大后减小的趋势。动力学分析表明,原料中的碱性氮和非碱性氮的加氢脱除在实验条件下均符合拟一级反应动力学。非碱性氮的加氢反应速率较小,制约了总氮的脱除,而氮杂环的加氢是非碱性氮加氢脱除反应的控制步骤。The hydrodenitrogenation（HDN） performance of Liaohe coker gas oil was carried out in a micro-fixed bed reactor over a NiW/CTS catalyst in the temperature range of 633-693 K, pressure range of 5-8 MPa, residence time range of 0.5-2 h and H2/CGO volume ratio range of 400- 1200, to investigate the effects of these variables on the relative rates of conversion of total, basic, and non-basic nitrogen compounds. It was observed that the increase of temperature, pressure and residence time all promoted the conversion of total nitrogen compounds （TN）. The removal of basic nitrogen compounds （BN） was easier than that of non-basic compounds （NBN）, and was also affected more significantly by the reaction conditions. As the increase of hydrogen/CGO volume ratio, the removal rate of both BN and NBN increased firstly and then decreased a little by hydrogenation. The kinetic study of the HDN reaction showed that the HDN reactions of BN and NBN both accorded with the pseudo first order kinetic model. The HDN reaction rate of NBN was smaller and controlled the removal of total nitrogen compounds. The hydrogenation of N-hetero-cycle was the controlling step for the HDN of NBN.

关 键 词：焦化蜡油 碱性氮 非碱性氮 加氢脱氮 动力学 

分 类 号：TQ013.2[化学工程]