收稿日期: 2016-11-09
修回日期: 2017-01-08
网络出版日期: 2017-03-10
基金资助
石油天然气装备教育部重点实验室开放基金资助项目(编号:OGE201403-28)资助.
Study on kinetic model of natural gas hydrate dissociation
Received date: 2016-11-09
Revised date: 2017-01-08
Online published: 2017-03-10
艾志久,王杰 . 天然气水合物分解的动力学模型研究[J]. 天然气地球科学, 2017 , 28(3) : 377 -382 . DOI: 10.11764/j.issn.1672-1926.2017.01.016
Based on diffusion mechanism and chemical kinetic theory,the kinetic model of natural gas hydrate dissociation into ice and gas is proposed.The pore structure of ice layer and the intrinsic kinetics of process of natural gas hydrate dissociation are considered in this model.In the framework of a quasi-stationary approximation,this kinetic model can be solved analytically to obtain transcendental equation and simplify the solution of this model.In the kinetic model,we analyze the effect of kinetic parameters on the process of natural gas hydrate dissociation into ice and gas.Further,the dissociation of powdery methane hydrate samples into ice and gas is taken as an example.The values of parameters E2 and f are estimated in the framework of a quasi-stationary approximation,and the approximate value of the diffusion coefficient of methane gas in the ice layer is also obtained.At the same time,it also explains the anomalous self-preservation effect of methane hydrate.Furthermore,the trial scope of this kinetic model needs to be further verified.
[1]Jerome R,Maria B.Monetizing gas:focusing on developments in gas hydrate as a mode of transportation[J].Energy Science and Technology,2012,4(2):61-68.
[2]Li Mingchuan,Fan Shuanshi.Radial mathematical model for hot water dissociation frontal brim of natural gas hydrates[J].Journal of Chemical Engineering of Chinese Universities,2013,27(5):761-766.[李明川,樊栓狮.天然气水合物注热水分解径向数学模型[J].高校化学工程学报,2013,27(5):761-766.]
[3]Zhou Shouwei,Chen Wei,Li Qingping.The green solid fluidization development principle of natural gas hydrate stored in shallow layers of deep water[J].China Offshore Oil and Gas,2014,26(5):1-7.[周守为,陈伟,李清平.深水浅层天然气水合物固态流化绿色开采技术[J].中国海上油气,2014,26(5):1-7.]
[4]Nakoryakov V,Misyura S.The features of self-preservation for hydrate systems with methane[J].Chemical Engineering Science,2013,104(18):1-9.
[5]Falenty A,Kuhs W,Glockzin M,et al.Self-preservation of CH4 hydrates for gas transport technology:pressure-temperature dependence and ice microstructures[J].Energy Fuels,2014,28(10):6275-6283.
[6]Mimachi H,Takahashi M,Takeya S,et al.Effect of long-term storage and thermal history on the gas content of natural gas hydrate pellets under ambient pressure[J].Energy Fuels,2015,29(18):4827-4834.
[7]Takeya S,Muromachi S,Yamamoto Y,et al.“Preservation” of CO2 hydrate under different atmospheric conditions[J].Fluid Phase Equilib,2016,413(15):137-141.
[8]Rehder G,Eckl R,Elfgen M,et al.Methane hydrate pellet transport using the self-preservation effect:a techno-economic analysis[J].Energies,2012,5(12):2499-2523.
[9]Kim H,Bishnoi P,Heidemann R.Kinetics of methane hydrate decomposition [J].Chemical Engineering Science,1987,42(7):1645-1653.
[10]He Xiaoxia,Yu Jinsong,Ma Yinghai,et al.Particle shrinking dynamic model for methane hydrate decomposition[J].Natural Gas Geoscience,2005,16(6):136-139.[何晓霞,余劲松,马应海,等.甲烷水合物分解的缩粒动力学模型[J].天然气地球科学,2005,16(6):136-139.]
[11]Lin Wei,Chen Guangjin.Review of research on the dissociation kinetics of gas hydrate[J].The Chinese Journal of Process Engineering,2004,4(1):69-74.[林微,陈光进.气体水合物分解动力学研究现状[J].过程工程学报,2004,4(1):69-74.]
[12]Sun C,Chen G.Methane hydrate dissociation above 0℃ and below 0℃[J].Fluid Phase Equilib,2006,242(2):123-128.
[13]Vlasov V.Phenomenological diffusion theory of formation of gas hydrate from ice powder[J].Theoretical Foundations of Chemical Engineering,2012,46(6):576-582.
[14]Vlasov V.Diffusion model of gas hydrate formation from ice[J].Heat Mass Transfer,2016,52(3):531-537.
[15]Vlasov V.Formation and dissociation of gas hydrate in terms of chemical kinetics[J].Reaction Kinetics Mechanisms and Catalysis,2013,110(1):5-13.
[16]Staykova D,Kuhs W,Salamatin A,et al.Formation of porous gas hydrates from ice powders:diffraction experiments and multistage model[J].The Journal of Physical Chemistry B,2003,117(37):10299-10311.
[17]Kuhs W,Staykova D,Salamatin A.Formation of methane hydrate from poly disperse ice powders[J].The Journal of Physical Chemistry B,2006,110(26):13283-13295.
[18]Takeya S,Ebinuma T,Uchida T,et al.Self-preservation effect and dissociation rates of CH4 hydrate[J].Journal of Crystal Growth,2002,237(21):379-382.
[19][JP3]Ikeda F,Kawamura K,Hondoh T.Mechanism of molecular diffusion in ice crystals[J].Molecular Simulation,2004,30(17):973-979.
[20]Stern L,Circone S,Kirby S,et al.Anomalous preservation of pure methane hydrate at 1 atm[J].The Journal of Physical Chemistry B,2001,105(9):1756-1762.
[21]Stern L,Circone S,Kirby S,et al.Temperature,pressure,and compositional effects on anomalous or “self” preservation of gas hydrates[J].Canadian Journal of Physics,2003,81(1):271-283.
[22]Stern L,Circone S,Kirby S,et al.Preservation of methane hydrate at 1 atm[J].Energy Fuels,2001,15(2):499-501.
[23]Kuhs W,Genov G,Staykova D,et al.Ice perfection and onset of anomalous preservation of gas hydrates[J].Physical Chemistry Chemical Physics,2004,6(21):4917-4920.
/
| 〈 |
|
〉 |