Detection and sterilization operation method of PP pleated filter element for food industry

Detection and sterilization operation method of PP folded filter element for food industry PP folded filter element is made of ultra-fine polypropylene fiber membrane and non-woven fabric or (wire mesh) inner and outer support layers. The center rod and end cover of the filter element shell adopt hot-melt welding technology Processed and formed, without any adhesive, no leakage, no secondary pollution. Check the pressure of the steam supply and the compressed gas and set them to the undetermined value, the pressure value should be set between 1.5bar and 2bar. Open the valve and purge the steam line until it is completely free of condensate. Open the valve until the condensate is completely drained. Slowly open the valve to increase the inflow of steam, thereby waiting 3 to 4 minutes to further heat the PP pleated filter element. Partially close the vent valve to allow the steam containing droplets to escape continuously. Opening the valves separately establishes a steady flow of steam, allowing condensed material and air in the filter to escape. At this time, pay attention to the pressure gauge, and keep △p(p1-p2) less than 350mbar during filtration. Make sure all air and condensate are effectively vented through the valve, a continuous stream of steam and water droplets can be seen in the process. The temperature of the steam flowing downstream in the PP pleated filter element is measured to reach 121.1 ℃, and the temperature is guaranteed to be lower than 128 ℃, the timer is running, the sterilization time is set to more than 30 minutes, and the pressure value and temperature value during the period should be recorded in detail. . After the steam is completely removed, close the valve, increase the amount of gas in the filter, and maintain the flow of gas to cool the whole system until the pressure thermometer shows about 30 ℃.
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