Fermentation tank sterilization method steps explain
The ferrite tank is equipped with electrodes. Check each interface before sterilization, whether the appearance of each pipeline is normal, and whether the steam outlet is strong. Each valve should be checked by two people to see if it is completely closed.
At least two people are required to be present when the fermenter is sterilized. One person is responsible for operating the various valves, and the other person is responsible for observing the reported parameters.
After the fermenter confirms that each valve is in the closed state, open the steam generator inlet valve, start the steam generator, and the steam generator starts to automatically enter the water. At this time, the drain valve at the lower part of the steam generator should be opened, and the rust should be put off as much as possible. Drain valve. Pay attention to the water level in the steam generator to prevent accidents.
At this point, the fermenter should completely open the jacket outlet valve, slowly open the main valve of the steam generator, slowly open the partial jacket intake valve, and start to pass water vapor to the jacket. At the beginning, the steam pressure may be unstable, the pressure gauge pointer swings violently, and the small jacketed intake valve can be properly closed, and then the sampling valve outlet steam valve is opened in turn, the sampling valve is inserted into the steam valve, the bottom valve is discharged from the steam valve, and the bottom valve is steamed. The valve sterilizes the sampling valve and the bottom valve while discharging the water vapor with unstable pressure. When the water vapor pressure does not change drastically, the valve is finally closed and the bottom valve is released.
The temperature in the fermenter tank gradually rises. When the temperature is set to 90°, the stirring motor stops rotating. At this time, the tank main intake valve is opened, the tank outlet valve is opened, and the following valves are opened in sequence: the outlet valve is opened, and the valve is slowly opened. Open the tank into the steam valve and put steam into the tank. The pressure of the air filter begins to rise. When the pressure exceeds 0.1MP, the condensate valve is opened to drain. Continue to open the large tank into the steam valve. After the air in the tank is removed, the pressure inside the tank is slow. Ascending, adjust the outlet valve to the temperature required for sterilization, and start timing when the sterilization temperature is reached.
Adjust the jacket intake valve, the tank inlet steam valve and the outlet regulating valve to maintain the temperature and tank pressure at the set temperature. After the sterilization time is reached, the opened inlet valves are closed in turn, the steam main valve is closed, the exhaust gas exhaust valve in the tank is completely released, the pressure in the tank is released, and the steam generator power is turned off. Turn on the air compressor, and when the tank pressure drops to 0.05MP, slowly open the intake regulator to maintain the positive pressure inside the tank.
During the sterilization process of the fermenter, the operator should wear long trousers with protective gloves to prevent burns. If the steam generator automatically enters the water during the sterilization process, the total steam pressure will drop rapidly. If necessary, the steam main valve can be opened appropriately to maintain the pressure, but the pressure change should be observed carefully. When the steam is passed through the tank, the tank pressure drops rapidly after sterilization, paying attention to the timing of the sterile air. Try not to operate the air compressor and steam generator at the same time. The air filter pressure should not exceed 0.2 MP during sterilization. The size of the condensate will affect the concentration of the liquid in the tank after sterilization, taking into account the increase in steam condensate.
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