NMP萃取精馏分离芳烃和非芳烃Separation on the Aromatics and Paraffin by Extractive Distillation with NMP
雷志刚,周荣琪,段占庭
摘要(Abstract):
通过常压汽液平衡和萃取精馏工艺实验说明NMP是分离芳烃和非芳烃的有效溶剂,且满足当前生态化工的要求。利用NMP中加水能够降低沸点的特点,对普通的萃取精馏双塔流程进行了改进。改进后的计算结果表明苯的收率从94.2%提高到98.2%,且整个改进过程不复杂。
关键词(KeyWords): NMP;萃取精馏;芳烃;非芳烃
基金项目(Foundation):
作者(Author): 雷志刚,周荣琪,段占庭
参考文献(References):
- [1] Berg L. Separation of benzene and toluene from close boiling nonaromatics by extractive distillation [J]. AIChE J, 1983, 29(6): 961-966.
- [2] Rawat B S,Gulati I B. Studies on the extraction of aromatics with sulpholane and its combination with thiodiglycol [J]. J Chem Tech Biotechnol,1981, 31: 25-32.
- [3] Wardencki W, Tameesh A H H. Evaluation of extraction properties of NMP and DOH mixtures by gas chromatography[J]. J. Chem Tech Biotechnol, 1981, 31: 86-92.
- [4] ZHENG Ying-e (郑英峨), CAI Rui (蔡锐),ZHAO Wei-peng et al (赵维彭等). Separation of alkane from hydrorefining raffinate using NFM with extractive distillation (用N-甲酰吗啉萃取精馏分离苯加氢油中的烷烃) [J]. Fuel and Chemical Process (燃料与化工), 1997, 28(2): 90.
- [5] LIU Bing (刘兵),ZHENG Ying-e (郑英峨),ZHAO Wei-peng et al (赵维彭). Relative volatility of benzene and thiophene in aqueous DMF solvent (含水DMF溶剂对苯和噻吩相对挥发度的影响) [J]. Journal of Chemical Engineering of Chinese Universities (高校化学工程学报). 1995, 9(3): 259.
- [6] CHENG Neng-lin (程能林). Solvent Handbook, 2nd ed. (溶剂手册, 第二版)[M]. Beijing (北京): Chemical Industry Press (化学工业出版社), 1994.
- [7] SUN Zong-hai (孙宗海),QU Guo-hua (瞿国华),ZHANG Qin-fang (张溱芳). Technology and Technigue of Petro-arene Production (石油芳烃生产工艺与技术) [M]. Beijing (北京): Chemical Industry Press (化学工业出版社), 1986.
- [8] Tiegs D, Gmehling J, Rasmussen P,et al.Vapor-liquid eguilibrium by UNIFAC group contribution 4 [J]. Ind Eng Chem Res, 1987, 26(1):159.