高选择性位阻胺脱硫剂的研制及性能测试

doi:10.16085/j.issn.1000-6613.2015.09.013

化工进展 ›› 2015, Vol. 34 ›› Issue (09): 3291-3295,3302.DOI: 10.16085/j.issn.1000-6613.2015.09.013

高选择性位阻胺脱硫剂的研制及性能测试

郭晓丹, 诸林, 焦文超, 陈倬

西南石油大学化学化工学院, 四川成都 610500

收稿日期:2015-01-12 修回日期:2015-03-31 出版日期:2015-09-05 发布日期:2015-09-05
通讯作者: 诸林,教授,博士生导师,主要研究方向为能源化工与环境保护。E-mail:zhulinswpi65@gmail.com
作者简介:郭晓丹(1989-),女,硕士研究生。

Development and performance test of a highly selective and sterically hindered amine desulfurizer

GUO Xiaodan, ZHU Lin, JIAO Wenchao, CHEN Zhuo

College of Chemistry & Chemical Engineering, Southwest Petroleum University, Chengdu 610500, Sichuan, China

Received:2015-01-12 Revised:2015-03-31 Online:2015-09-05 Published:2015-09-05

摘要/Abstract

摘要： 以环氧氯丙烷和浓盐酸为原料通过开环反应制备中间产物1,3-二氯-2-丙醇,将该产物与叔丁胺通过亲核取代反应合成可用于气体脱硫的位阻胺1,3-二叔丁胺基-2-丙醇(DTBP),并用红外谱图(IR)及核磁共振氢谱(¹H NMR)对其进行了结构表征。采用单因素变量法对反应条件进行优化,研究表明,以100%无水乙醇为反应介质,当1,3-二氯-2-丙醇与叔丁胺的摩尔比为1:3,反应温度为140℃,反应时间为3h时,所制得的DTBP产率最高,为92.3%。脱硫性能测试结果表明:在相同的实验条件下,DTBP溶液的H₂S脱除率及吸收选择性均优于N-甲基二乙醇胺(MDEA)溶液。

关键词: 位阻胺, 选择性脱硫, 合成, 优化, 评价

Abstract: With epoxy chloropropane and concentrated hydrochloric acid as raw material,the intermediate product 1,3-dichloro-2-propanol was prepared by ring opening action. A novel sterically hindered amine 1,3-di-tert-butylamine-2-propanol (DTBP),which can be used for gas desulfurization,has been synthesized by nudeophilic substitution between 1,3-dichloro-2-propanol and tert-butylamine,and then the chemical structure of this desulfurizer was demonstrated by IR and ¹H NMR. The reaction conditions were optimized by the method of single factor variable,and the study showed that with the 100% anhydrous ethanol as reaction medium,when the molar ratio between 1,3-dichloro-2-propanol and tert-butylamine was 1:3,the reaction temperature was 140℃,and the reacting time was 3 hours,the yield of DBTP was 92.3%,which was the maximum. The laboratory desulfurization performance test indicated that the capacity of H₂S absorption and the absorption selectivity of DTBP solution were higher than those of MDEA under the same reaction conditions.

Key words: sterically hindered amine, selective desulfuration, synthesis, optimization, evaluation

中图分类号:

TE622
TE624

郭晓丹, 诸林, 焦文超, 陈倬. 高选择性位阻胺脱硫剂的研制及性能测试[J]. 化工进展, 2015, 34(09): 3291-3295,3302.

GUO Xiaodan, ZHU Lin, JIAO Wenchao, CHEN Zhuo. Development and performance test of a highly selective and sterically hindered amine desulfurizer[J]. Chemical Industry and Engineering Progree, 2015, 34(09): 3291-3295,3302.

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高选择性位阻胺脱硫剂的研制及性能测试

Development and performance test of a highly selective and sterically hindered amine desulfurizer

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