化工学报 ›› 2024, Vol. 75 ›› Issue (9): 3287-3296.DOI: 10.11949/0438-1157.20240254
徐宏标1,2(), 杨亮1,2(), 李子栋1,2, 刘道平1,2
收稿日期:
2024-03-04
修回日期:
2024-05-20
出版日期:
2024-09-25
发布日期:
2024-10-10
通讯作者:
杨亮
作者简介:
徐宏标(1999—),男,硕士研究生,Xhongbiao2023@163.com
基金资助:
Hongbiao XU1,2(), Liang YANG1,2(), Zidong LI1,2, Daoping LIU1,2
Received:
2024-03-04
Revised:
2024-05-20
Online:
2024-09-25
Published:
2024-10-10
Contact:
Liang YANG
摘要:
提高海水水合储气速率和储气密度对水合物技术规模化应用至关重要。将一定浓度的NaCl溶液与疏水性气相纳米二氧化硅高速搅拌分散成微米级盐水微滴。8.0 MPa、274.15 K条件下,利用不同硅含量的盐水微滴进行水合储甲烷实验,研究甲烷水合物生成动力学特性。结果表明,硅含量2.5%(质量分数)的盐水微滴分散性和储气性能最佳,储气量达141.01 cm3·cm-3,储气速率达7.37 cm3·cm-3·min-1。进一步将该硅含量盐水微滴填充至开孔泡沫铜中,构建盐水微滴/泡沫铜复合水合储气体系。研究发现,泡沫铜三维巢状金属骨架能显著加速水合反应热的转移,提高微滴水合储气性能。5.0~8.0 MPa下,相较于盐水微滴单一体系,复合体系水合储气量提高4.72%~21.70%,最大储气速率提高38.25%~110.58%。
中图分类号:
徐宏标, 杨亮, 李子栋, 刘道平. 盐水微滴/泡沫铜复合体系中甲烷水合物生成动力学研究[J]. 化工学报, 2024, 75(9): 3287-3296.
Hongbiao XU, Liang YANG, Zidong LI, Daoping LIU. Kinetics of methane hydrate formation in saline droplets/copper foam composite system[J]. CIESC Journal, 2024, 75(9): 3287-3296.
图4 甲烷水合物在不同硅含量盐水微滴中生成过程温压变化
Fig.4 Variation of temperature and pressure during the formation of methane hydrates in SD with different silicon contents
图7 不同压力下硅含量2.5%的盐水微滴及其泡沫铜填充体系水合储气量和储气速率
Fig.7 Gas storage capacity and storage rate of SD with 2.5% silicon content and its CF filling system under different pressures
图8 不同压力下硅含量2.5%的盐水微滴及其泡沫铜填充体系最大储气量和储气速率对比
Fig.8 Comparison of maximum storage capacity and maximum storage rate of SD with 2.5% silicon content and its CF filling system
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