Working principle of the water seal tank
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This post was last edited by Jiangchengzi on 2012-1-25 at 15:37. Please ask those from Sichuan for help – does anyone know how it works? Thanks in advance!
To prevent the gas pressure inside the controller from exceeding a specified value, a safety liquid seal device (also known as a water seal device) is often used. Its purpose is to ensure the safety of the equipment; if the gas pressure exceeds a specified value, the gas is discharged from the liquid seal device. A liquid seal can also prevent gas leakage, and it offers an excellent sealing effect, even more secure than valves. For example, gas cabinets are usually sealed with water to prevent gas leaks.
It utilizes the hydrostatic pressure of a liquid column formed by a certain height of sealed liquid (such as water) to balance external pressures, thereby serving to seal or isolate. For example, the atmospheric leg located below the steam jet pump in the vacuum towers of the petroleum refining industry uses the static pressure generated by a water column to prevent air from leaking into the vacuum system. This post was last edited by adsl121 on 2009-4-4 23:28]
My unit’s lean liquid tank is assisted by a water seal tank as well as a nitrogen seal.
In essence, it involves inserting a pipe into the water. This allows the oil, gas, or non-condensable gases coming out of the pipe to be condensed, thereby enabling separation of oil, water, and gas. The second reason is for safety considerations; for example, in a pressure reduction system, if negative pressure occurs in the tower during an accident, air may enter the tower and form explosive gases. Isolating the system from the atmosphere helps to protect it in such accident situations
Water seal function: When the pressure inside the storage tank becomes too high, the gas in the tank can break through the water seal and escape into the atmosphere, thereby preventing overpressure in the tank； When the nitrogen sealing system fails and a negative pressure develops inside the tank, air can enter the tank through the water seal, preventing the tank from collapsing.
The lean liquid nitrogen seal is primarily used to prevent the amine solution from coming into contact with oxygen in the air. The water seal ensures that the nitrogen inside your tank maintains a constant pressure. The water seal pressure is the height of the water column.
In my opinion, the principle of the water-sealed tank is to prevent the amine solution from oxidizing, and it is installed at the top of the lean liquid tank. Nitrogen is introduced into the lean liquid tank to exclude air, and a demineralized water tank at the top is used to hold back the nitrogen. The water flow is continuous, and this small amount of water goes directly into the amine tank. The pressure of nitrogen is equal to the potential energy of water plus the local atmospheric pressure. Active participation
The water seal function is to prevent air from coming into contact with the flammable gases inside the tank, thereby avoiding damage to the tank due to overpressure. The function of the nitrogen seal is to maintain a slight positive pressure inside the tank, prevent air from entering, and avoid negative pressure that could damage the tank
I need to make a water-sealed tank now as well; since I saw what the original poster mentioned, I want to learn how to do it too*
Water seals are also used in torch systems, serving functions such as isolation, sealing, and preventing pressure buildup