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.
Xuemin ZHANG Yang LI Ze YAO Jinping LI Qingbai WU Ji YUAN
. Quantitative Influence of Surfactant on the Formation Process for Gas Hydrate[J]. The Chinese Journal of Process Engineering, 2018
, 18(2)
: 356
-360
.
DOI: 10.12034/j.issn.1009-606X.217272
[1] Sloan E D. Clathrate of Natural Gases. New York: Marcel Dekker, 2008.
[2] Ganji H, Manteghian M, Omidkhah M R, et al. Effect of different surfactants on methane hydrate formation rate, stability and storage capacity[J]. Fuel, 2006, 86 (3): 434–441.
[3] Karaaslan U, Uluneye E, Parlaktuna M, et al. Effect of an anionic surfactant on different type of hydrate structures[J]. Journal of Petroleum Science and Engineering, 2002, 35 (1): 49–57.
[4] Kalogerakis N, Jamaluddin A K M, Dholabhai P D, et al. Effect of surfactants on hydrate formation kinetics[C]. The SPE International Symposium on Oilfield Chemistry. Society of Petroleum Engineers, 1993. 375–383.
[5] 余汇军, 王树立, 宋琦. 添加剂对二氧化碳水合物生成特性的影响[J]. 化学工业与工程, 2010, 27(5): 411–414.
YU Huijun, WANG Shuli, SONG Qi. Influence of Additives on the Generation Characteristics of CO2 Hydrate[J]. Journal of Chemical Industry and Engineering, 2010, 27(5): 411–414..
[6] 孙志高, 郭开华, 王如竹, 等. 甲烷水合物形成促进技术实验研究[J]. 工程热物理学报, 2005, 26(12): 205–207.
SUN Zhigao, GUO Kaihua, WANG Ruzhu, et al. Experimental study on promoting technology of natural gas hydrate formation[J]. Natural Gas Industry, 2005, 26(12): 205–207.
[7] Watanabe K, Imai S, Mori Y H. Mori, et al. Surfactant effects on hydrate formation in an unstirred gas/liquid system: an experimental study using HFC-32 and sodium dodecyl sulfate[J]. Chemical Engineering Science, 2005, 60(17): 4846–4857.
[8] 李金平, 马涛, 王建森, 等. 表面活性剂对水合物生成过程的定量影响[J]. 工程热物理学报, 2010, 31 (5): 364–369.
LI Jinping, MA Tao, WANG Jiansen, et al. Quantitative influence of surfactant on the growth process of gas hydrate[J]. Journal of Engineering Thermophysics, 2010, 31 (5): 793–796.
[9] Sun C Y, Chen G J, Yang L Y. Interfacial tension of methane + water with surfactant near the hydrate formation conditions[J]. Journal of Chemical & Engineering Data, 2004, 49(4): 1023–1025.
[10] Luo H, Sun C Y, Huang Q, et al. Interfacial tension of ethylene and aqueous solution of sodium dodecyl
sulfate (SDS) in or near hydrate formation region[J]. Journal of Colloid and Interface Science, 2006, 297(1): 266–270.
[11] 李金平, 王磊磊, 王立璞, 等. HCFC141b气体水合物快速生成实验研究[J]. 哈尔滨工业大学学报, 2006, 38(3): 472–475.
LI Jinping, WANG Leilei, WANG Lipu, et al. Experimental study on the fast formation of HCFC141b gas hydrate[J]. Journal of Harbin University of technology, 2006, 38(3): 472–475.
[12] 袁吉, 李金平, 王林军, 等. 表面活性剂对水合反应物两相界面张力的影响[J]. 中国科学技术大学学报, 2008, 38 (4): 419–423.
YUAN Ji, LI Jinpin, WANG Linjun, et al. Effect of surfactants on interfacial tension of gas hydrate formers[J]. Journal of University of Science and Technology of China, 2008, 38 (4): 419–423.
[13] Fang Y W, Wang J H, Zheng Z Q. Purification of sodium dodecyl sulphate[J]. Journal of Shantou University (Natural Scilncl), 1996, 11(1): 18–23.
[14] Chen Xiaobo, Gong Liangfa. Measuring the critical micell concentration of sodium dodecyl benzene sulfonate with conductance method[J]. Journal of JiLin Forestry University, 1998, 14(3): 167–176.
[15] 赵世民. 表面活性剂—原理、合成、测定及应用[M]. 北京: 中国石化出版社, 2005. 120–124.
ZHAO Limin. Surfactant - principles, synthesis, and applications[M]. Beijing: China Petrochemical Press, 2005. 120–124.
[16] 顾惕人, 朱埗瑶, 李外郎, 等. 表面化学[M]. 北京: 科学出版社, 2003. 13.
GU Tiren, ZHU Buyao, LI Wailang, et al. Surface chemistry[M]. Beijing: Science press, 2003. 13.
[17] Ganji H, Manteghian M, Rahimi Mofrad H. Effect of mixed compounds on methane hydrate formation and dissociation rates and storage capacity[J]. Fuel Processing Technology, 2007, 88(9): 891–895.
