Study on the filtration performance of rGO filter material for oil mist particles released from turbine oil

How to effectively filter the multi particle, oily and viscous particles generated by the release of turbine oil is one of the urgent problems to be solved. This article studies the filtration performance of reduced graphene oxide (rGO) filter materials for PM10, PM2.5, and PM1.0 released from turbine oil, and analyzes the effects of filtration velocity and particle viscosity on filtration efficiency and resistance. The results indicate that the pollution generated by the release of turbine oil is mainly fine particles, with a cumulative proportion of particles <1.0 μm accounting for 74.47%. The filtration efficiency of rGO filter material shows a trend of first increasing and then decreasing within the filtration velocity range of 0.5-2.5 m/s. The optimal filtration velocity node is 1.5 m/s. At this point, the filtration efficiency of rGO filter material for PM10, PM2.5, and PM1.0 is 81.98%, 72.29%, and 68.19%, respectively. The counting filtration efficiency of rGO filter material for particulate matter released from steam turbines decreases with decreasing particle size. In practical use, it is necessary to comprehensively match the relationship between filtration resistance and filtration efficiency. It provides reference value for the efficient filtration of particulate matter generated by the release of turbine oil.