Methane hydrate formation in the SiC foam ceramics packed reactor in presence of β-cyclodextrin

2019 5th International Conference on Energy Materials and Environment Engineering

能源学;生态环境科学

Liu, Xiaowan^1^2 ; Tian, Linqing^1^2 ; Wu, Guozhong^1^2

Division of Ocean Science and Technology, Graduate School at Shenzhen, Tsinghua University, Shenzhen, Guangdong

518055, China^1

School of Environment, Tsinghua University, Beijing

100084, China^2

关键词: Beta-cyclodextrin;    Control experiments;    Conversion rates;    Environmental-friendly;    Gas consumption rate;    Hydrate formation;    Methane hydrates;    Mixed solution;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/295/3/032080/pdf
DOI  :  10.1088/1755-1315/295/3/032080

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

Cyclodextrins were used as environmental friendly additives in enhancing the kinetics of gas hydrate formation. Effects of β-Cyclodextrin (Beta-CD) on methane hydrate formation in the SiC foam ceramics packed reactor were evaluated in this paper. To investigate the roles of these additives played in the enhancement of hydrate formation kinetics, different concentrations of Beta-CD and sodium dodecyl sulfate (SDS) mixed solution were used in the gas hydrate formation system. The overall results demonstrated that the addition of Beta-CD promoted the formation of methane hydrate. Compared with the control experiments with only 200 ppm SDS and SFC packings, the induction time for methane hydrate formation was shortened by 97.6 % when 1000 ppm Beta-CD was added, while the maximum gas consumption rate and water conversion rate were increased by up to 284.2 % and 102.0 %, respectively. Results showed that simultaneous usage of Beta-CD, SDS and SFC packings enhanced the methane hydrate formation kinetics.