对燃气轮机的进气过滤系统进行了升级改造，将进气过滤系统的过滤等级由F8级提升到了H11级。改造后过滤效率明显提升，压气机长期不需要进行水洗，保持在高效率状态下运行，发电机组的平均发电效率也得以提升，经济效益非常可观。升级后的进气过滤系统在现场运行过程中遇到了多种恶劣天气工况，如沙尘、暴雨大雾天气和空气中含油性物质等。通过对过滤器的滤材及结构进行改进，最终开发和筛选出对各种恶劣大气条件适应性强的高效过滤器。同时在日常运行中，我们也积累了一些处理突发状况的经验和总结了一些合理使用高效过滤器的策略。%The level of filtration of the inlet air filtration system for gas turbine was upgraded from F8 to H11.The filtration efficiency of air intake system improved significantly after the improvement was completed.The compressor need not washing for long term, and can keep working in a high state of efficiency.The average power generation efficiency of the unit can be improved which can bring consid-erable economic benefit.The upgraded air inlet filter system run in variety of weather conditions , such as sand dust weather, rainstorm weather, foggy weather and the condition that the air always contains oil substance.We found the type of High Efficiency Particulate Air ( HEPA) filter which can be well adapted to a variety of bad weather by improving the material and structure of filers.At the same time,some deal with emergency situation experiences accumulated during daily operation and some reasonable use strategy of HEPA fil-ter is summarized.
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