碳纳米管材料对甲烷水合物生长动力学的影响  

Effect of carbon nanotube on the methane formation kinetic

作　　者：胡绪尧 Hu Xuyao(Sinopec Research Institute of Safety Engineering Co.,Ltd.,State Key Laboratory of Safety and Control for Chemicals,Qingdao Shandong 266071,China)

机构地区：[1]中石化安全工程研究院有限公司化学品安全控制国家重点实验室,山东青岛266071

出　　处：《石油化工》2022年第8期895-900,共6页Petrochemical Technology

摘　　要：研究了碳纳米管材料CNT-1,在CNT-1-水体系中甲烷的生长动力学特征,考察了CNT-1添加量、初始实验压力等宏观因素对甲烷水合物生长动力学的影响。另外,从水合物初始反应推动力、水合物在CNT-1孔道的形成以及多孔吸附性等角度分析了CNT-1对甲烷水合物生成过程中的影响机理。实验结果表明,CNT-1的孔道主要分布在介孔与大孔区域;当初始压力不高于5.0 MPa时,CNT-1的存在抑制了甲烷水合物的生成,且随着添加量的增加,抑制效果表现的更为明显;但在进气压力为6.5 MPa时,CNT-1的存在有利于甲烷水合物的快速生成;在相同CNT-1添加量条件下,初始压力对甲烷水合物生长动力学的影响规律相似,均随着初始压力的增加耗气量逐渐增加。The growth kinetics of carbon nanotube material CNT-1 and methane in CNT-1-water system were studied,and the effects of macroscopic factors such as the amount of CNT-1 added and the initial experimental pressure on the growth kinetics of methane hydrate were investigated.In addition,the influence mechanism of CNT-1 on the formation of methane hydrate was also developed in this paper from the perspectives of the initial driving force,hydrate formation in confined nanospace and the porous adsorption.The experimental results show that the pores of CNT-1 are mainly distributed in the mesoporous and macroporous regions.Based on the analysis of the hydrate formation kinetics in different systems,it can be concluded that when the initial pressure is not higher than 5.0 MPa,the presence of CNT-1 inhibits the formation rate of methane hydrate,and the inhibition effect becomes more and more obvious with the increase of the amount.However,CNT-1 can effectively promote the formation of methane hydrate when the initial pressure is 6.5 MPa.Under the same CNT-1 addition amount,the effect of initial pressure on the kinetics of methane hydrate formation is similar that the gas consumption for hydrate formation gradually increases with the increase of initial pressure.

关 键 词：碳纳米管 甲烷水合物 生长动力学 吸附耦合 

分 类 号：TQ018[化学工程]