表面活性剂对气体水合物生成过程的定量影响

doi:10.12034/j.issn.1009-606X.217272

过程工程学报 ›› 2018, Vol. 18 ›› Issue (2): 356-360.DOI: 10.12034/j.issn.1009-606X.217272

表面活性剂对气体水合物生成过程的定量影响

张学民^1,2,3^*，李洋^1,2，姚泽^1,2，李金平^1,2，吴青柏^1,4，袁吉^1,2

1. 兰州理工大学西部能源与环境研究中心，甘肃兰州 730050； 2. 甘肃省生物质能与太阳能互补供能系统重点实验室，甘肃兰州 730050； 3. 中国科学院天然气水合物重点实验室，广东广州 510640； 4. 中国科学院寒区旱区环境与工程研究所，甘肃兰州 730000

收稿日期:2017-07-10 修回日期:2017-09-05 出版日期:2018-04-22 发布日期:2018-04-10
通讯作者: 张学民 zxm2010lut@163.com
基金资助:
国家自然科学基金青年项目;甘肃省自然科学基金;中科院天然气水合物重点实验室开放基金

Quantitative Influence of Surfactant on the Formation Process for Gas Hydrate

Xuemin ZHANG ^1,2,3^*, Yang LI^1,2, Ze YAO^1,2, Jinping LI^1,2, Qingbai WU^{1 4}, Ji YUAN^1,2

1. Western China Energy & Environment Research Center, Lanzhou University of Technology, Lanzhou, Gansu 730050, China; 2. Key Laboratory of Complementary Energy System of Biomass and Solar Energy, Lanzhou, Gansu 730050, China; 3. Key Laboratory of Gas Hydrate, Guangzhou Institute of Energy Conversion, CAS, Guangzhou,Guangdong 510640, China; 4. Cold and Arid Regions Environmental Engineering Research Institute, CAS, Lanzhou, Gansu 730000, China

Received:2017-07-10 Revised:2017-09-05 Online:2018-04-22 Published:2018-04-10
Contact: ZHANG Xue-Min zxm2010lut@163.com

摘要/Abstract

摘要： 为确定HCFC?141b水合物生成条件下阴离子表面活性剂十二烷基硫酸钠(SDS)和十二烷基苯磺酸钠(SDBS)的临界胶束浓度(CMC)，在0~20℃温度下，通过圆环法实验研究了不同浓度表面活性剂溶液体系的表面张力，考察了表面活性剂对溶液体系表面张力的影响机理并通过C3H8水合物的生成过程实验进行了验证，确定了SDS和SDBS的临界胶束浓度. 结果表明，当SDS和SDBS的质量浓度分别低于500?10?6和100?10?6时，表面活性剂降低水表面张力的效果最明显，二者的CMC分别为1950?10?6和400?10?6，表面活性剂能明显缩短水合反应的诱导时间，提高了其平均生成速率.

关键词: 水合物, 表面活性剂, 表面张力, 临界胶束浓度, 生成速率

Abstract: In order to confirm the critical micelle concentrations (CMC) of anionic surfactants sodium dodecyl sulfate (SDS) and sodium dodecyl benzene sulfonate (SDBS) under hydrate formation conditions, the surface tension of SDS and SDBS solution with different concentrations were measured by ring method in the temperature range of 0?20℃. The influence mechanism of surfactant on the surface tension of solution system was revealed and verified through formation experiment of C3H8 hydrate, the CMC of SDS and SDBS solution under conditions of HCFC?141b hydrate formation were determined. The results showed that the effect of surfactant on surface tension decrease of water is most obvious when the weight concentration of SDS and SDBS solution was below 500?10?6 and 100?10?6, the CMC of SDS and SDBS solution are 1950?10?6 and 400?10?6, respectively, near the conditions of HCFC?141b hydrate formation. Under the CMC, surfactant obviously promoted the formation process of C3H8 hydrate and shortened the induction time and increase the formation rate of gas hydrate.

Key words: hydrate, surfactant, surface tension, critical micelle concentration, formation rate

张学民李洋姚泽李金平吴青柏袁吉. 表面活性剂对气体水合物生成过程的定量影响[J]. 过程工程学报, 2018, 18(2): 356-360.

Xuemin ZHANG Yang LI Ze YAO Jinping LI Qingbai WU Ji YUAN. Quantitative Influence of Surfactant on the Formation Process for Gas Hydrate[J]. Chin. J. Process Eng., 2018, 18(2): 356-360.

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表面活性剂对气体水合物生成过程的定量影响

Quantitative Influence of Surfactant on the Formation Process for Gas Hydrate

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