鼓泡法强化甲烷水合物成核及生长研究  

Study on the enhancement of nucleation and growth of methane hydrate by bubbling

作　　者：程传晓 李伦 胡深 金听祥 吴学红 张军 齐天 郑季历 赖正祥 耿王宁 黄昌伟 Cheng Chuanxiao;Li Lun;Hu Shen;Jin Tingxiang;Wu Xuehong;Zhang Jun;Qi Tian;Zheng Jili;Lai Zhengxiang;Geng Wangning;Huang Changwei(School of Energy and Power Engineering,Zhengzhou University of Light Industry,Zhengzhou 450002,China)

机构地区：[1]郑州轻工业大学能源与动力工程学院,郑州450002

出　　处：《低温与超导》2021年第2期55-60,104,共7页Cryogenics and Superconductivity

基　　金：国家自然科学基金项目(51606173、51606172、51622603);河南省科技厅项目(202102310225);河南省青年人才支持项目(2020HYTP027);国家重点研发项目(2018YFE0206600)资助。

摘　　要：水合物在相变蓄冷等领域具有广泛的应用前景,而降低水合物成核诱导期、提升水合物生长速率是影响水合物蓄冷技术发展的关键因素。开发了一套可视化水合物原位生成实验系统,通过反应釜底部气泡板持续产生气泡强化水合物成核生长,重点对鼓泡法下水合物诱导期和生长速率进行了研究。实验结果表明,气泡表面形成壳状水合物并不断堆积。鼓泡法显著地降低了甲烷水合物诱导期,在SDS体系下,鼓泡法对诱导期的缩减最高达到93.6%。同时,鼓泡法对后续水合物的生长也具有显著促进效果,使水合物生长速率提高15.1~37.5%。在纯水体系中,鼓泡法提高了甲烷气体的转化率,最高提高了14.57倍。同时实验呈现温度越低,气体转化率和水合物生长速率越大的规律。Hydrate has wide application prospects in the field of phase change cold storage. Reducing the hydrate nucleation induction time and increasing the hydrate growth rate are the key factors to affect the development of hydrate cold storage technology. Therefore, a set of visual experimental system for hydrate formation in situ was developed. Bubbles were continuously generated through the bubble plate at the bottom of the reactor to enhance the hydrate nucleation and growth. The research focused on the induction period and growth rate of hydrate by bubbling. The experimental results show that shell hydrate is formed on the surface of bubbles and accumulates continuously. Bubbling significantly reduce the induction time of hydrate formation. In the SDS system, bubbling reduce the induction time up to 93.6%. In addition, bubbling also has a significant promotion effect on the subsequent growth of hydrates to increase growth rate of hydrate by 15.1~37.5%. In pure water system, the conversion rate of methane is increased by up to 14.57 times by bubbling. Meanwhile, the experiment shows that the lower the temperature, the greater the gas conversion and hydrate growth rate.

关 键 词：水合物蓄冷 鼓泡 强化 诱导期 生长速率 

分 类 号：TK01[动力工程及工程热物理]