纳米石墨颗粒与SDS复配对水合物生成特性的影响
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摘要
为了促进水合物的生成,采用将纳米石墨颗粒与十二烷基硫酸钠(SDS)复配的方法,研究其复配体系对于水合物生成的诱导时间、耗气量以及生成速率的影响。结果表明,纳米石墨颗粒与SDS复配体系能大幅度缩减水合物生成过程的诱导时间,增加耗气量,加快生成速率。其中在277.15K、4.5MPa的条件下,0.5%纳米石墨流体与0.03%SDS的复配效果最佳,其诱导时间与纯水体系相比降幅达到61.77%。在277.15K、3.5MPa的条件下,0.5%纳米石墨与0.05%SDS的复配体系最大气体消耗量与纯水体系相比提高了5.29倍。比较两者的耗气率,复配体系中的峰值更是纯水体系的6.32倍。两者复配是强化水合物生成有力的促进剂。
To improve the hydrate formation,the effects of graphite nanoparticles + sodium dodecyl sulfate(SDS) compounded systems on induction time,the amount of gas consumption and formation rate of carbon dioxide hydrate were investigated.The results show that the graphite nanoparticle and SDS solution can significantly decrease the induction time, increase the gas consumption and accelerate the formation rate during the process of hydrate formation. Under 277.15 K and 4.5MPa,the solution containing graphite nanoparticles of 0.5% by mass and SDS of 0.03% by mass was found having the most positive effect, which reduced the induction time by 61.77% compared to the pure water system.Besides,under 277.15 K and 3.5MPa, the maximum of gas consumption in the system of 0.5% graphite nanoparticles +0.05% SDS was 5.29 times more than that of pure water system.Moreover, the peak rate of gas consumption for the compounded system was even 6.32 times of the pure water system.Compounding graphite nanoparticles and SDS is a kind of strong promoter for enhancing hydrate formation.
To improve the hydrate formation,the effects of graphite nanoparticles + sodium dodecyl sulfate(SDS) compounded systems on induction time,the amount of gas consumption and formation rate of carbon dioxide hydrate were investigated.The results show that the graphite nanoparticle and SDS solution can significantly decrease the induction time, increase the gas consumption and accelerate the formation rate during the process of hydrate formation. Under 277.15 K and 4.5MPa,the solution containing graphite nanoparticles of 0.5% by mass and SDS of 0.03% by mass was found having the most positive effect, which reduced the induction time by 61.77% compared to the pure water system.Besides,under 277.15 K and 3.5MPa, the maximum of gas consumption in the system of 0.5% graphite nanoparticles +0.05% SDS was 5.29 times more than that of pure water system.Moreover, the peak rate of gas consumption for the compounded system was even 6.32 times of the pure water system.Compounding graphite nanoparticles and SDS is a kind of strong promoter for enhancing hydrate formation.
引文
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[4]Mohammadi A,Manteghian M,Haghtalab A,et al.Kinetic study of carbon dioxide hydrate formation in presence of silver nanoparticles and SDS[J].Chem Eng J,2014,237:387-395.
[5]Najibi H,Shayegan M M,Heidary H,et al.Experimental investigation of methane hydrate formation in the presence of copper oxide nanoparticles and SDS[J].J Nat Gas Sci Eng,2015,23:315-323.
[6]Aliabadi M,Rasoolzadeh A,Esmaeilzadeh F,et al.Experi-mental study of using Cu O nanoparticles as a methane hydrate promoter[J].J Nat Gas Sci Eng,2015,27:1518-1522.
[7]Arjang S,Manteghian M,Mohammadi A.Effect of synthesized silver nanoparticles in promoting methane hydrate formation at 4.7MPa and 5.7MPa[J].Chem Eng Res Des,2013,91:1050-1054.
[8]Talaghat M R.Experimental investigation of induction time for double gas hydrate formation in the simultaneous presence of the PVP and L-Tyrosine as kinetic inhibitors in a mini flow loop apparatus[J].J Nat Gas Sci Eng,2014,19:215-220.
[9]潘云仙,刘道平,黄文件,等.气水合物形成时的诱导时间定义辨析[J].上海理工大学学报,2006,28(1):14-22.