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微波场中乙烷及丙烷气体水合物的分解特性
Alternative TitleDecomposition Characteristics of Ethane Hydrate and Propane Hydrate by Microwave Heating
He Song (何松); Liang De-Qing (梁德青); Li Dong-Liang (李栋梁); Ma Long-Long (马隆龙)
2010-06
Source PublicationACTA PHYSICO-CHIMICA SINICA
ISSN1000-6818
Volume26Issue:6Pages:8,1473-1480
Contribution Rank[He Song (何松); Liang De-Qing (梁德青); Li Dong-Liang (李栋梁); Ma Long-Long (马隆龙)] Chinese Acad Sci, Guangzhou Inst Energy Convers, Key Lab Renewable Energy & Gas Hydrate, Guangzhou 510640, Peoples R China; [He Song (何松); Liang De-Qing (梁德青); Li Dong-Liang (李栋梁); Ma Long-Long (马隆龙)] Chinese Acad Sci, Guangzhou Inst Energy Convers, Guangzhou Ctr Gas Hydrate Res, Guangzhou 510640, Peoples R China; [He Song (何松)] Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China
Corresponding AuthorLiang, DQ (reprint author), Chinese Acad Sci, Guangzhou Inst Energy Convers, Key Lab Renewable Energy & Gas Hydrate, Guangzhou 510640, Peoples R China.
Other AbstractThe decomposition of type I ethane hydrate and type II propane hydrate stimulated by 2.45 GHz microwave (MW) were experimentally investigated. The decomposition characteristics of the hydrates under MW heating were analyzed based on the two. step dissociation mechanism accompanied by heat and mass transfer at the crystal surface. Results show that the decomposition behavior of the gas hydrate during MW heating is coupled with the real. time electromagnetic field. Volumetric heating enhances the heat and mass transfer process at the surface layer of the hydrate particles. The time. accumulated thermal effect of MWheating promotes the destruction of the clathrate host lattice. The average decomposition rates of ethane hydrate and propane hydrate obtained in this work range from 0.109 to 0.400 mol . min(-1) . L-1 and from 0.090 to 0.222 mol . min(-1) . L-1, respectively, under incident MW power that ranges from 120 to 540 W. We conclude that the average decomposition rates of ethane hydrate and propane hydrate are faster as the MW power increases within a certain range. The decomposition rates of ethane hydrate are mainly controlled by the MW power. In contrast, the decomposition rates of propane hydrate are controlled by both the MW power and the kinetic mechanismunder relatively higher power.
研究了2.45GHz微波场中I型乙烷水合物及II型丙烷水合物的热激分解过程,基于晶体表面两步分解机制的动力学模型,结合传热传质分析了其分解特性.结果表明:水合物在微波场中的加热分解是一个与实际微波电磁场相互耦合的过程,微波体积加热的特点强化了水合物颗粒表层的传热传质过程,时间累积的热效应增大了水合物晶体破解速率;在120至540W入射功率下,乙烷、丙烷水合物气化速率分别达到0.109-0.400mol·min-·1L-1及0.090-0.222mol·min-1·L-1.在一定范围内增大微波功率可显著提高水合物分解速率,其中乙烷水合物一直处于功率主控区,丙烷水合物更早进入功率和分解动力机制共同控制区.
KeywordHydrate Ethane Propane Microwave Decomposition Molecular-dynamics Simulation Gas Hydrate Methane Hydrate Production Behavior Dissociation Kinetics Stimulation Surfactant Sediment 水合物 乙烷 丙烷 微波 分解
Subject AreaChemistry
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Indexed BySCI ; CSCD
Language中文
Funding Organization国家自然科学基金(50676097 50876107); 国家重点基础研究发展计划项目(973)(2009CB219504)
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Document Type期刊论文
Identifierhttp://ir.giec.ac.cn/handle/344007/8529
Collection中国科学院广州能源研究所
生物质能研究中心
天然气水合物基础研究实验室
Recommended Citation
GB/T 7714
He Song (何松),Liang De-Qing (梁德青),Li Dong-Liang (李栋梁),等. 微波场中乙烷及丙烷气体水合物的分解特性[J]. ACTA PHYSICO-CHIMICA SINICA,2010,26(6):8,1473-1480.
APA He Song ,Liang De-Qing ,Li Dong-Liang ,&Ma Long-Long .(2010).微波场中乙烷及丙烷气体水合物的分解特性.ACTA PHYSICO-CHIMICA SINICA,26(6),8,1473-1480.
MLA He Song ,et al."微波场中乙烷及丙烷气体水合物的分解特性".ACTA PHYSICO-CHIMICA SINICA 26.6(2010):8,1473-1480.
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