硅胶吸附脱除模拟油品中的碱性氮化物  

STUDY ON NITROGEN COMPOUNDS ADSORPTION PERFORMANCE OF SILICA GEL

作　　者：李少凯[1] 阮本玺[1] 沈健[1] 赵明飞[1] 

机构地区：[1]辽宁石油化工大学石油化工学院,辽宁抚顺113001

出　　处：《石油炼制与化工》2013年第6期22-25,共4页Petroleum Processing and Petrochemicals

摘　　要：以硅胶为吸附剂,以喹啉的十二烷溶液为模拟油,在间歇式反应釜中进行静态吸附实验,考察硅胶焙烧温度、吸附温度对硅胶吸附脱氮性能的影响,并采用焙烧法对硅胶进行再生。结果表明:硅胶具有较强的吸附脱氮能力,其最佳焙烧温度为400℃;在剂油质量比0.03、吸附温度20℃、吸附时间30min的条件下对碱性氮质量分数为1 500gμ/g的模拟油可以达到较好的吸附脱氮效果,脱氮率在70%以上;经多次再生,硅胶的吸附脱氮率仍在68%以上。The adsorption tests of quinoline in dodecane solution on silica gel by batch scale reactor were conducted. The influence of calcination temperature of silica gel and the adsorption temperature, adsorption time as well as regeneration on the denitrogenation was investigated. It is found that the Langmuir equation is more suitable for fitting the adsorption isotherm. The adsorption results show that silica gel calcined at 400℃ has a better adsorption performance of basic nitrogen compounds, and that under the adsorption conditions of 20℃, the adsorbent to oil ratio of 0. 03 g/g, and the reaction time of 30min, the best adsorption result （for 1500μg/g N sample, N removal 〉70%） can be obtained. The fact that the basic nitrogen removal keeps in more than 68% after multiple regenerations indicates the good regeneration ability of the silica gel.

关 键 词：喹啉 硅胶 吸附脱氮 等温线 

分 类 号：TE624[石油与天然气工程—油气加工工程]