The natural gas produced from gas wells contains a lot of fine gravel impurities, which causes the blockage of precision pressure regulating equipment and metering equipment. Cyclone separator is widely used in the field of natural gas surface sand removal because of its simple structure and high separation efficiency. In the field application of traditional cyclone separators, there are some problems, such as ineffective separation of fine sand particles in natural gas, low separation efficiency, and large energy loss. In order to solve the above problems, a new cyclone separator is designed in this paper; that is, a cone built-in object is arranged inside the traditional separator to improve the separation efficiency and reduce the pressure drop. First, the feasibility of the scheme is verified by comparing the computational fluid dynamics (CFD) simulation results of the traditional separator with the experimental results. Second, the performance indexes of the new separator and the traditional separator under specific working conditions are simulated and compared. The conclusions are as follows: compared with the traditional separator, the new separator can improve the tangential velocity of the outer cyclone. It has obvious separation effect on small particles, and the separation particle size ratio can be reduced by 47.83%. The pressure drop of the separator is reduced by 11.42%. While the separation efficiency and precision are improved, the overall performance of the separator is also improved and the energy consumption is reduced.

中文翻译：

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气井除砂内置料旋风分离器数值模拟与性能评价

气井产出的天然气中含有大量细小砾石杂质，造成精密调压设备和计量设备堵塞。旋风分离器因其结构简单、分离效率高而被广泛应用于天然气地表除砂领域。传统旋风分离器在现场应用中存在天然气中细砂颗粒分离效果不佳、分离效率低、能量损失大等问题。为了解决上述问题，本文设计了一种新型旋风分离器；即在传统分离器内部设置锥形内置物，以提高分离效率，降低压降。第一的，通过将传统分离器的计算流体动力学（CFD）模拟结果与实验结果进行对比，验证了该方案的可行性。其次，对新型分离器与传统分离器在特定工况下的性能指标进行了模拟比较。结论如下：与传统分离器相比，新型分离器可以提高外旋流器的切向速度。对小颗粒有明显的分离效果，分离粒度比可降低47.83%。分离器的压降降低了11.42%。在提高分离效率和精度的同时，也提高了分离器的整体性能，降低了能耗。