Qiu Shunzuo, Zhong Lin, Wang Guorong, Fang Xing, Yang Yan, Liu Qin
Department of International Applied Technology, Yibin University, Yibin 644000, China.
Department of Mechatronic Engineering, Southwest Petroleum University, Chengdu 610500, China.
ACS Omega. 2023 Jul 27;8(31):28531-28542. doi: 10.1021/acsomega.3c02920. eCollection 2023 Aug 8.
Structural parameters play a decisive role in the performance of hydrocyclones for in situ natural gas hydrate (NGH) recovery and desanding. In this paper, the effects of key structural parameters on its performance were investigated by numerical simulations and experimental methods. The results show that the most influential factors are the spiral pitch of the spiral inlet, the vortex finder diameter, and the spigot diameter. The second most influential factors are the spiral turn number and the cone angle. Other parameters have the least influence. Specifically, the NGH recovery efficiency and pressure drop increase, but desanding efficiency decreases as / and the cone angle increase. The NGH recovery efficiency and pressure drop decrease and desanding efficiency increases as / increases. Therefore, it is necessary to choose a suitable value to balance the efficiency and pressure drop to improve the performance, for example, selecting the appropriate diameter ratio of the vortex finder and spigot. The above results can be used for the engineering design of in situ separators in marine hydrate mining and further realize in situ desanding, NGH recovery, and sand backfilling.
结构参数对用于原位天然气水合物（NGH）开采和除砂的水力旋流器性能起着决定性作用。本文通过数值模拟和实验方法研究了关键结构参数对其性能的影响。结果表明，最具影响力的因素是螺旋入口的螺旋间距、涡旋收集器直径和排砂口直径。第二大影响因素是螺旋圈数和锥角。其他参数影响最小。具体而言，随着/和锥角的增加，NGH采收率和压降增加，但除砂效率降低。随着/的增加，NGH采收率和压降降低，除砂效率增加。因此，有必要选择合适的值来平衡效率和压降以提高性能，例如，选择合适的涡旋收集器与排砂口直径比。上述结果可用于海洋水合物开采中原位分离器的工程设计，并进一步实现原位除砂、NGH采收和砂回填。
