The impact of mechanical impurities smaller than 20 microns on the quality of hydrogenation tail oil
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Can a large amount of mechanical impurities smaller than 20 microns pass through the catalyst bed and affect the quality of the hydrogenation tail oil? Can it clog the bed layer? Can it clog the catalyst pores?
Backwashing is usually done at 25 microns~~~~ With high filtration precision, there is a lot of contaminated oil; in such cases, other devices end up having to process a large amount of this contaminated oil, and it eventually comes back again~~~~ 25 microns is the value recommended by catalyst manufacturers over the course of the device’s useful life. After all, raw materials can vary, and there are many uncertainties in the production process~~~~ It’s normal for the device not to reach its intended useful life~~~~
It’s not a big problem; filter screens are usually 20-mesh, capable of filtering out mechanical impurities larger than 25 microns. If the filtration precision is too high, the losses in the system will increase, the filter will need to be backwashed frequently, and its lifespan will be shortened. Generally, a filter is installed in the tank area, one in use and one as a backup; it switches when the pressure difference increases, and cleaning is carried out. As long as there is a backwash filter in the system, there should be no issues