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.
出处
《石油炼制与化工》
CAS
CSCD
北大核心
2013年第6期22-25,共4页
Petroleum Processing and Petrochemicals
关键词
喹啉
硅胶
吸附脱氮
等温线
quinoline
silica gel
nitrogen adsorption removal
isotherm
