环丁砜抽提重石脑油芳烃体系相平衡研究  

Study on Equilibrium of Sulfolane and Heavy Naphtha Extraction System

作　　者：王云芳[1] 袁倩 迟正伟 

机构地区：[1]中国石油大学(华东)化学工程学院,山东青岛266580 [2]中国石油集团工程设计有限责任公司华北分公司,河北任丘062550 [3]烟台万华聚氨酯股份有限公司,山东烟台264000

出　　处：《高校化学工程学报》2014年第3期460-465,共6页Journal of Chemical Engineering of Chinese Universities

基　　金：SINOPEC齐鲁分公司研究院科技项目

摘　　要：采用液-液萃取技术脱除重石脑油中的芳烃。常压下，测定了含水量为0.02%、0.3%、0.5%及0.8%的环丁砜与重石脑油在剂油比1：1~5：1及温度为313.15、323.15、333.15、343.15、353.15 K的液-液相平衡数据，全面考察了环丁砜的芳烃抽提性能。结果表明，在环丁砜抽提体系中，轻质芳烃的分配系数与温度呈正比而与剂油比呈反比。环丁砜对轻质芳烃的选择性系数随温度升高而减小，随轻相中芳烃含量的降低而变大。但重质芳烃的分配系数和环丁砜对其选择性系数则随温度和剂油比变化不大。环丁砜含水量为0.5%时，在基本不改变其溶解性能的基础上使其选择性得到了明显改善。The aromatic extraction performance of sulfolane （water content of 0.02%, 0.3%, 0.5%and 0.8%, respectively） for the liquid phase with the volume ratio of sulfoane and heavy naphtha 1：1~5：1 was determined under atmospheric pressure at temperature of 313.15K, 323.15K, 333.15K, 343.15K and 353.15K, respectively. The results show that the distribution coefficients of light aromatics are positively correlated with extraction temperature but inversely related to the volume ratio of sulfolane and heavy naphtha. The selectivity coefficient of light aromatics decreases when extraction temperature increases and increases when aromatic content in the raffinate phase decreases. However, the distribution coefficient and selectivity coefficient of heavy aromatics have little change with temperature and volume ratio. Sulfolane with 0.5% water shows good solubility and improved selectivity in the study.

关 键 词：环丁砜 芳烃 重石脑油 液-液萃取 

分 类 号：TE624.5[石油与天然气工程—油气加工工程] O642.42[理学—物理化学]