Methane hydrate crystal growth on shell substrate

作     者：Xin Jiang Baojiang Sun Zhiyuan Wang Wantian Zhou Jiakai Ji Litao Chen Xin Jiang;Baojiang Sun;Zhiyuan Wang;Wantian Zhou;Jiakai Ji;Litao Chen

作者机构：School of Petroleum EngineeringChina University of Petroleum(East China)Qingdao 266580China Key Laboratory of Unconventional Oil and Gas DevelopmentChina University of Petroleum(East China)Qingdao 266580China 

出 版 物：《Chinese Journal of Chemical Engineering》 (中国化学工程学报（英文版）)

年 卷 期：2022年第35卷第3期

页      面：50-61页

核心收录：

学科分类：081702[工学-化学工艺] 07[理学] 070205[理学-凝聚态物理] 08[工学] 0817[工学-化学工程与技术] 080501[工学-材料物理与化学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0703[理学-化学] 0702[理学-物理学] 

基　　金：Financially supported by the National Natural Science Foundation of China(51991365 and 51876222) China National Petroleum Corporation(CNPC)Major Science and Technology Project(ZD2019-184-002) 

主　　题：Methane Hydrate Crystal growth Morphology Fractal dimension 

摘      要：Hydrate crystals growth on the surface of methane bubble(hydrate film)in pure water was studied by using a high-pressure visible microscope under the conditions of subcoolingΔT=5.44-13.72 K and methane concentration differenceΔC=2.92-8.19 mol·L^(-1).It was found the hydrate film is porous and the hydrate crystals grow towards the liquid phase on the film *** crystal morphology and growth rate are affected byΔT andΔ***ΔT8.82 K orΔC4.12 mol·L^(-1),the hydrate crystals grow in dendritic shape,and the axial growth rate increases first and then *** perimeter and area of the growing hydrate crystals were measured,and the fractal dimension of hydrate crystal under differentΔC andΔT was *** results show that the fractal dimension of columnar hydrate crystal is greater than ***3.87 mol·L^(-1)4.77 mol·L^(-1),ΔT8.52 K,the fractal dimension of dendritic hydrate crystal is less than 2.