文献类型：期刊文献

中文题名：石脑油中正构烷烃在无黏结剂5A分子筛床层中的吸附行为研究

英文题名：ADSORPTION BEHAVIOUR OF n-PARAFFINS CONTAINED IN NAPHTHA ON THE BED WITH BINDERLESS 5A MOLECULAR SIEVE

作者：孙辉[1];沈本贤[1];焦鑫[2]

机构：[1]华东理工大学化学工程联合国家重点实验室,上海200237;[2]中石化中原油田普光分公司天然气净化厂

年份：2011

卷号：42

期号：5

起止页码：45

中文期刊名：石油炼制与化工

外文期刊名：Petroleum Processing and Petrochemicals

收录：CSTPCD;;Scopus;北大核心:【北大核心2008】；CSCD:【CSCD_E2011_2012】；

语种：中文

中文关键词：石脑油;正构烷烃;5A分子筛;黏结剂;吸附

外文关键词：naphtha; n-paraffins; 5A molecular sieve; binder; adsorption

摘要：在固定床吸附分离实验装置上对比研究石脑油中正构烷烃在无黏结剂和有黏结剂5A分子筛床层中的吸附行为。结果表明,随着碳数的增加,各正构烷烃穿透床层的时间增加。与有黏结剂5A分子筛床层相比,无黏结剂5A分子筛床层具有更高的正构烷烃吸附容量,床层穿透时的油筛比(原料油与分子筛质量比)更大。在吸附温度300℃、石脑油进料空速90 h^(-1)的条件下,无黏结剂5A分子筛对石脑油中正构烷烃的动态吸附容量较有黏结剂5A分子筛高34.5%。正构烷烃在无黏结剂5A分子筛床层中的传质段长度小于有黏结剂5A分子筛床层,无黏结剂5A分子筛床层的有效利用率更高。
Adsorption of n-paraffins contained in naphtha on 5A molecular sieve pellets with/without binder was studied on a fixed bed adsorption device. The results indicated that the adsorption breakthrough times of various n-paraffins increased with the increase of n-paraffins＇ carbon number. As compared with molecular sieve with binder, the adsorption bed of binderless 5A molecular sieve showed higher adsorption capacities for n-paraffins; at an adsorption temperature of 300℃ and a space velocity of 90 h 1 , the dynamic adsorption capacity of binderless 5A molecular sieve was 34. 5 % higher than that of molecular sieve with binder, which indicated that more naphtha feed could be processed or less molecular sieve pellets should be packed. Furthermore,the mass-transfer zone of bed with binderless 5A mo- lecular sieve was shorter, which suggested that the effective using rate of this adsorption bed was higher.