What is the effect of excessively high intake air temperature or low intake air pressure on the operation of the filter

What is the effect of excessively high intake air temperature or low intake air pressure on the operation of the filter

1. Among the five filtration mechanisms of fiber filtration, only Brownian diffusion is positively affected by the increase in temperature. The increase in temperature increases the diffusion speed of particles and makes the filtration efficiency develop in the direction of improvement, but this is related to the increase in intake temperature. The negative impact caused by the device is insignificant.

　　 The saturation content of water vapor or oil vapor in the air is closely proportional to the temperature. For example, as the temperature increases, the saturated vapor of the compressor lubricating oil rises linearly, the saturated vapor pressure of the compressor oil is about 0.15Pa at 40℃, and the saturated oil vapor pressure will rise to 6Pa when the temperature rises to 80℃, that is, saturated steam The pressure has increased by 40 times, and the oil content may increase by more than 40 times, which will greatly increase the burden on the filter element. Generally speaking, the negative impact of the increase in intake air temperature on the filter is greater than the decrease in pressure.

　　 Two. In actual work, the working pressure of the filter is often lower than the rated pressure, which is mainly caused by the increase of the gas load or the leakage of the pipeline. In this case, the faster the gas passing through the filter element will inevitably lead to an increase in the number of pollutants passing through the filter element per unit time, which will increase the burden on the filter element, so its impact on the filtering effect is negative, that is, the lower the pressure , The heavier the burden, the worse the filtration efficiency. When the filter needs to work at low pressure, the capacity should be corrected according to the pressure correction coefficient provided by the manufacturer.