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过程工程学报 ›› 2023, Vol. 23 ›› Issue (3): 421-429.DOI: 10.12034/j.issn.1009-606X.222392

• 研究论文 • 上一篇    下一篇

压缩机润滑油雾滤芯过滤性能分析与改进研究

张云德1， 王龙1， 侯亚龙1， 安卫兵1， 畅斌2,3*， 陈锋4*
  

  1. 1. 中国石油长庆油田分公司第二采气厂，陕西 榆林 719000 2. 大陆动力学国家重点实验室，西北大学地质学系，陕西 西安 710069 3. 陕西工业职业技术学院土木工程学院，陕西 咸阳 712000 4. 中国石油大学(北京)机械与储运工程学院，北京 102249
  • 收稿日期:2022-10-24 修回日期:2022-12-16 出版日期:2023-03-28 发布日期:2023-03-28
  • 通讯作者: 畅斌 3454519887@qq.com
  • 作者简介:张云德，本科，工程师，从事天然气储运工作，E-mail: zyde_cq@petrochina.com.cn；通讯联系人，畅斌，高级工程师，从事油气田开发地质工作，E-mail: 634874885@qq.com；陈锋，讲师，从事天然气过滤分离工作，E-mail: chenfeng@cup.edu.cn
  • 基金资助:
    陕西省自然科学基金项目

Analysis and improvement of filtration performance of filter element for compressor lubricating oil mist

Yunde ZHANG1,  Long WANG1,  Yalong HOU1,  Weibing AN1,  Bin CHANG2,3*,  Feng CHEN4*   

  1. 1. Second Gas Production Plant of Changqing Oilfield Branch Company Ltd., PetroChina, Yulin, Shaanxi 719000, China 2. State Key Laboratory of Continental Dynamics, Department of Geology, Northwest University, Xi'an, Shaanxi 710069, China 3. School of Civil Engineering, Shaanxi Polytechnic Institute, Xianyang, Shaanxi 712000, China 4. College of Mechanical and Transportation Engineering, China University of Petroleum, Beijing 102249, China
  • Received:2022-10-24 Revised:2022-12-16 Online:2023-03-28 Published:2023-03-28
  • Contact: Bin /Chang 3454519887@qq.com

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摘要： 利用现场高压和实验室常压滤芯性能评价装置，对比了不同工况下的滤芯过滤性能，分析了液体物性和油雾浓度对滤芯过滤性能的影响规律，提出了滤芯改进方法并进行了效果验证。结果表明，由于气液相互作用改变，高压下滤芯过滤效率相比常压略低，但常压工况过滤性能变化规律能反映现场实际运行性能。与气体流量相比，液体黏度对中效滤芯的过滤效率影响更大，且滤芯在过滤高黏度液体时才会出现压降的显著上升。油雾浓度对中效滤芯的压降影响受液体黏度控制，高黏度时压降随油雾浓度升高而升高，但低黏度时压降基本不随油雾浓度变化。由于流量对液滴扩散捕集作用的影响，低流量时滤芯对高黏度液体的过滤效率随油雾浓度降低反而升高。通过调整滤芯内部的滤材组成及排布方式，可实现小尺寸液滴的高效捕集，对癸二酸二辛酯液滴的过滤效率相比原滤芯至少提升50%。研究结果对于指导天然气储运过程中滤芯性能提升与机理认识具有重要意义。

关键词: 液体, 过滤, 油雾, 分离, 压降

Abstract: The filtration performance of the filter element was compared by using the performance evaluation devices for high-pressure condition in the field and atmospheric pressure in the laboratory. The influences of the physical properties of liquid and the concentration of oil mist on the filter element's filtration performance were analyzed. An improvement method of the filter element was proposed and the improving effect was verified. The results showed that the filtration efficiency of filter element under high pressure was slightly lower than that under atmospheric pressure due to the change of gas-liquid interaction, but the change rule of filtration performance under atmospheric pressure could reflect the actual operation performance on-site. Compared with the gas flowrate, the liquid viscosity had a greater impact on the filtration efficiency of the medium efficiency filter element, and the pressure drop of filter element significantly increased only during filtration for liquid with high viscosity. The effect of oil mist concentration on the pressure drop of such filter element was controlled by the liquid viscosity. The pressure drop increased with the increase of oil mist concentration at high viscosity, but did not change at low viscosity. Due to the influence of flowrate on droplet capture by diffusion effect, the filter efficiency for high viscosity liquid increased with the decrease of oil mist concentration at low flowrate. By adjusting the composition and layout of the filter material inside the filter element, it could achieve efficient capture of small droplets, and the filtration efficiency for dioctyl sebacate droplets was at least 50% higher than that of the original filter element. The research results are of great significance to guide the improvement of filter element performance and understanding of mechanism in the process of natural gas storage and transportation.

Key words: liquid, filtration, oil mist, separation, pressure drop