Promoting effect of high density fluid phase nano-bubbles on hydrate formation

doi:10.16085/j.issn.1000-6613.2024-2016

Chemical Industry and Engineering Progress ›› 2025, Vol. 44 ›› Issue (12): 6789-6797.DOI: 10.16085/j.issn.1000-6613.2024-2016

• Chemical processes and equipment • Previous Articles

Promoting effect of high density fluid phase nano-bubbles on hydrate formation

LIU Qingdi¹(), GUO Yong¹(), LIU Xinyu¹, HUANG Deshi², WANG Guan³, ZHANG Xian¹()

^1.Key Laboratory of Enhanced Oil and Gas Recovery of Ministry of Education, Northeast Petroleum University, Daqing 163000, Heilongjiang, China
^2.Xinjiang Oilfield Branch Jiqing Oilfield Operation Area, Kelamayi 834000, Xinjiang, China
^3.Bohai Drilling Third Drilling Company, Tianjin 300000, China

Received:2024-12-11 Revised:2025-04-25 Online:2026-01-06 Published:2025-12-25
Contact: ZHANG Xian

高密度体相纳米气泡对气体水合物生成的促进作用

刘青帝¹(), 郭勇¹(), 刘心语¹, 黄德士², 王冠³, 张弦¹()

^1.东北石油大学提高油气采收率教育部重点实验室，黑龙江大庆 163000
^2.新疆油田分公司吉庆油田作业区，新疆克拉玛依 834000
^3.渤海钻探第三钻井分公司，天津 300000

通讯作者: 张弦
作者简介:刘青帝（1994—），男，硕士研究生，研究方向为水合物成核。E-mail：17854262861@163.com
郭勇（1985—），男，讲师，研究方向为天然气水合物绿色高效开采。E-mail：guoyong@nepu.edu.cn。
基金资助:
国家博士后科学基金面上项目(2021MD703808)

Abstract

Abstract:

The effects of nano-bubbles on hydrate formation rate and induction period are studied in this paper. In the experiment of the influence of pressure disturbance on the induction period of hydrate formation, it is found that pressure reduction can effectively shorten or even eliminate the induction period of hydrate formation, but instantaneous depressurization does not affect the phase equilibrium characteristics of CO₂ hydrate. Through the NanoSight microscale analysis experiment observation, it is found that high concentration nano-bubbles are formed in the proper phase during the depressurization process. The gas-liquid contact area of nano-bubbles is increased, and the high density of nano-bubbles significantly increases the driving force of hydrate nucleation. The experimental results show that the artificially controlled pressure disturbance may avoid the formation of CO₂ hydrate, which has practical engineering guiding significance in the marine waste mineral carbon sequestration (CCUS) CO₂ project.

Key words: pressure disturbance, hydrate formation, nano-bubbles, carbon sequestration

摘要：

研究了瞬时降压所造成的体相纳米气泡对二氧化碳水合物的生成速率及诱导期的影响。在瞬时压力扰动对水合物生成诱导期影响实验中发现瞬时降压能够有效缩短甚至消除水合物生成的诱导期，但瞬时降压并不影响二氧化碳水合物的相平衡特性。进一步通过NanoSight纳米微粒分析仪观测发现，系统瞬时降压过程使得体相中生成了高浓度纳米气泡。纳米气泡较大的比表面特性增大了气液接触面积，通过热力学计算证实其高密度特性显著增大了水合物成核驱动力。实验现象表明，通过控制压力扰动可以控制CO₂水合物的成核速率。研究结果在海洋废弃矿藏碳捕集、利用与封存（carbon capture,utilization and storage，CCUS）项目中有实际的工程指导意义。

关键词: 压力扰动, 水合物生成, 纳米气泡, 碳封存

CLC Number:

TQ95

LIU Qingdi, GUO Yong, LIU Xinyu, HUANG Deshi, WANG Guan, ZHANG Xian. Promoting effect of high density fluid phase nano-bubbles on hydrate formation[J]. Chemical Industry and Engineering Progress, 2025, 44(12): 6789-6797.

刘青帝, 郭勇, 刘心语, 黄德士, 王冠, 张弦. 高密度体相纳米气泡对气体水合物生成的促进作用[J]. 化工进展, 2025, 44(12): 6789-6797.

Figures/Tables 12

纳米气泡中心距离r/nm	过饱和度驱动力 $(l n S) 2$	成核概率 $J$
75	0.0734	1.7×10^-24
80	0.0649	2.0×10^-27
90	0.0531	4.6×10^-33
100	0.0444	1.6×10^-39
120	0.0323	1.1×10^-54
150	0.0210	1.5×10^-83
200	0.0125	2.2×10^-139
300	0.0056	0

纳米气泡中心距离r/nm	过饱和度驱动力 $(l n S) 2$	成核概率 $J$
75	0.0734	1.7×10^-24
80	0.0649	2.0×10^-27
90	0.0531	4.6×10^-33
100	0.0444	1.6×10^-39
120	0.0323	1.1×10^-54
150	0.0210	1.5×10^-83
200	0.0125	2.2×10^-139
300	0.0056	0

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Promoting effect of high density fluid phase nano-bubbles on hydrate formation

高密度体相纳米气泡对气体水合物生成的促进作用

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