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功能化多壁碳纳米管与L-亮氨酸复配体系中甲烷水合物动力学特征

单文昊 王琳 吴祥恩 杨雨奇 王菊慧子 蔡玉叶

单文昊, 王琳, 吴祥恩, 杨雨奇, 王菊慧子, 蔡玉叶. 功能化多壁碳纳米管与L-亮氨酸复配体系中甲烷水合物动力学特征[J]. 地质科技通报, 2024, 43(5): 161-169. doi: 10.19509/j.cnki.dzkq.tb20230215
引用本文: 单文昊, 王琳, 吴祥恩, 杨雨奇, 王菊慧子, 蔡玉叶. 功能化多壁碳纳米管与L-亮氨酸复配体系中甲烷水合物动力学特征[J]. 地质科技通报, 2024, 43(5): 161-169. doi: 10.19509/j.cnki.dzkq.tb20230215
SHAN Wenhao, WANG Lin, WU Xiang'en, YANG Yuqi, WANG Juhuizi, CAI Yuye. Kinetic characteristics of methane hydrate in functionalized multi-walled carbon nanotubes and L-leucine compounding system[J]. Bulletin of Geological Science and Technology, 2024, 43(5): 161-169. doi: 10.19509/j.cnki.dzkq.tb20230215
Citation: SHAN Wenhao, WANG Lin, WU Xiang'en, YANG Yuqi, WANG Juhuizi, CAI Yuye. Kinetic characteristics of methane hydrate in functionalized multi-walled carbon nanotubes and L-leucine compounding system[J]. Bulletin of Geological Science and Technology, 2024, 43(5): 161-169. doi: 10.19509/j.cnki.dzkq.tb20230215

功能化多壁碳纳米管与L-亮氨酸复配体系中甲烷水合物动力学特征

doi: 10.19509/j.cnki.dzkq.tb20230215
基金项目: 

海南省科技计划三亚崖州湾科技城联合项目 420LH028

国家自然科学基金项目 42266008

国家自然科学基金项目 41906060

海南省2021年国家级大学生创新创业训练计划项目 202111100022

海南省2022年国家级大学生创新创业训练计划项目 202211100008

海南热带海洋学院校级引进人才科研启动项目 RHDRC202109

构造与油气资源教育部重点实验室开放基金项目 TPR-2021-23

详细信息
    作者简介:

    单文昊, E-mail: 1774626776@qq.com

    通讯作者:

    吴祥恩, E-mail: 361724081@qq.com

  • 中图分类号: TE31

Kinetic characteristics of methane hydrate in functionalized multi-walled carbon nanotubes and L-leucine compounding system

More Information
  • 摘要:

    加快天然气水合物形成, 对基于水合物法的天然气储运、气体分离和二氧化碳捕集技术的推动具有重要意义。采用恒温恒容法研究了wB=0.05%功能化(羟基化、羧基化和氨基化)多壁碳纳米管和wB=1.0% L-亮氨酸复配体系中甲烷水合物动力学特征。研究表明, 多壁碳纳米管、羧基化和羟基化多壁碳纳米管与L-亮氨酸的复配, 可使甲烷水合物诱导成核时间大幅缩短至25, 22, 13 min左右, 促进效果与典型促进剂十二烷基硫酸钠相当, 且促进效果优于单一添加剂体系。复配体系甲烷储气质量分数具有良好表现, 可达136~142 mg/g。对甲烷平均吸收速率和瞬时吸收速率的分析表明, 多壁碳纳米管对生长阶段甲烷水合物的生长动力学影响很小。复配体系和L-亮氨酸体系中甲烷水合物的生长具有相似性, 均呈现出甲烷气体吸收速率快速增加到最大值, 然后迅速下降并完成生长的特点。综合分析表明, 多壁碳纳米管和L-亮氨酸的复配对甲烷水合物的成核速率具有协同增强效应, 而生长阶段的进程与速率主要受L-亮氨酸影响。该研究为探索不同类型添加剂在强化甲烷水合物生成动力学上的差异化机理提供了新思路。

     

  • 图 1  甲烷水合物合成装置示意图

    Figure 1.  Schematic diagram of the hydrate synthesis device

    图 2  甲烷水合物生成机理图

    Figure 2.  Schematic diagram of methane hydrate formation

    图 3  甲烷气体瞬时吸收速率求解示意图(以0.05%氨基化碳纳米管和1% L-亮氨酸复配体系为例)

    Figure 3.  Schematic diagram of the gas transient absorption rate solution(0.05% aminated carbon nanotubes and 1% L-leucine compound system were used as an example)

    图 4  不同体系甲烷水合物生成过程随压力(a)和温度(b)变化图

    Figure 4.  Variations in pressure(a) and temperature(b) during methane hydrate generation under different systems

    图 5  不同体系甲烷气体吸收量的变化

    Figure 5.  Variation in methane gas absorption for different systems

    图 6  不同体系甲烷水合物诱导时间与甲烷气体平均吸收速率比较图

    a.不同溶液体系与纯水体系t90的比值;b.不同体系甲烷气体平均吸收速率

    Figure 6.  Comparison between the induction time of methane hydrate in different systems and average absorption rate of methane gas

    图 7  不同体系甲烷气体瞬时吸收速率

    Figure 7.  Instantaneous absorption rates of methane gas for different systems

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出版历程
  • 收稿日期:  2023-04-20
  • 录用日期:  2023-07-13
  • 修回日期:  2023-07-06

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