关于提高空压机可靠性的措施研究和效果评价

郑博仁 荣宁 孟军

[摘    要]长北天然气处理厂空气压缩机组在运行期间由于压缩机旋转组件锈蚀引起转子发生卡滞、碰磨和咬死等故障，降低了设备的可用性，使得维修成本逐年增加，压缩空气因气液分离器效率降低加重了干燥器的负荷，导致成品气的水露点达不到工厂供风系统的使用标准，影响了其他生产单元的正常运行，基于以上问题通过采取干气干燥和改善湿气气液分离等技改措施，提高了压缩机组运行的可靠性，取得了良好的效果，为处理厂其他生产装置长周期、平稳运行提供了强有力的保障。

[关键词]压缩机;空气;螺杆;转子;除锈;干燥;分离;过滤

[中图分类号]TQ116.1 [文献标志码]A [文章编号]2095–6487（2021）01–0–02

Research on Measures to Improve the Reliability of Air

Compressors and Evaluation of Effects

Zheng Bo-ren，Rong Ning，Meng Jun

[Abstract]During the operation of the Changbei Natural Gas Processing Plant， the air compressor unit due to the rust of the compressor rotating components causes the rotor to jam， rub and seize， which reduces the availability of the equipment and increases the maintenance cost year by year. The compressed air is caused by gas and liquid. The reduced efficiency of the separator increases the load of the dryer， causing the water dew point of the product gas to fall below the standard of the factory air supply system， and affecting the normal operation of other production units. Based on the above problems， dry air drying and moisture improvement are adopted. Technical improvement measures such as liquid separation have improved the reliability of the compressor unit operation and achieved good results， providing a strong guarantee for the long-term and stable operation of other production devices in the treatment plant.

[Keywords]compressor;air;screw;rotor;rust removal;drying;separation;filtration

1 設备及工艺简介

长北天然气处理厂仪表供风系统由两套空气压缩机与干燥器一体化整体撬装，附属有过滤器、管路、储气罐等设备组成整个系统，是保障天然气连续、平稳生产的关键设备，压缩机组由Comp-Air压缩机公司生产的D150-08A双级无油螺杆压缩机和无热再生型吸附式压缩空气干燥器组成，压缩机额定排气量25 m3/min，排气压力0.63～0.8 MPaG之间，干燥器的再生方式为无热再生，采用吸附筒双向交替连续工作方式，将压缩空气中的水分脱离，使其水露点值保持在-40 ℃以下，为全厂各装置提供正常生产用的净化空气和制氮用压缩空气。

2 故障类型及分析

2.1 压缩机转子锈蚀卡滞

D150-08A双级无油螺杆压缩机自2006年投入运行，采用一用一备的交替运转模式，设备在前期运……