What are the precautions for air filter disinfection
Release time:
2021-02-27
1. Use superheated steamAir filterWhen sterilizing, please make sure to decompress and cool the superheated steam, and use it after exceeding the pressure and temperature requirements of the fermentation industry. It is recommended to control the steam at 200 ~ 300kPa.
2. The saturated steam used in the sterilization process must be filtered. Before the steam enters the air filter, impurities and condensed water in the steam are discharged. When the exhaust steam is misty, open the air valve to the steam air filter to prevent premature wear of the steam filter.
3. When using steam to disinfect the air filter, all valves should be opened without leaving dead corners. After the end of sterilization, compressed air must be introduced slowly, and the ventilation speed cannot be too fast to prevent the friction between the airflow and the filter medium from causing safety accidents.
4. When bacteria are extinct, when steam is converted into compressed air, the pressure drop of the air filter should be strictly controlled, and the pressure gauges before and after the air filter pipeline should be carefully observed to prevent pressure from being generated before the pressure filter. The membrane of the air filter is higher than the membrane behind the membrane. Pressure, which can easily cause damage to the filter element.
5. After steam sterilization, if the process allows, it must be fully openedAir filterThe air intake valve, and the air filter must be blown for 30 minutes before it can be put into use. Since the air filter operates under humid conditions, it may cause the fermentation liquid to be infected with bacteria.
6. After using the steam air filter, close its inlet and outlet stop valves, and open the drain valve on the steam air filter to prevent valve leakage and steam condensate from penetrating into the fermentation tank, thereby causing unnecessary costs.
7. On the premise of ensuring normal manufacturing, try to avoidAir filterSterilize and extend the service life of the filter element. Due to the differences in products and working conditions of fermentation enterprises, the equipment that provides filtration equipment usually does not provide disinfection cycles. The company must find a feasible disinfection cycle according to the growth status of the fermentation broth to reduce production costs and ensure safe production.
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