Pressure overpressure in the gas fractionation tower
Thread Content
The system overpressure in the gas fractionation tower was found to be caused by a leak inside the condenser. Why does a leak in the condenser lead to an increase in pressure? Please explain in detail, experts. Thank you!
When a leak occurs in the cooler, liquid hydrocarbons will leak into the circulating water. These liquid hydrocarbons create an air barrier within the cooler, reducing the amount of water circulating and leading to higher backflow temperatures, which in turn increases the tower pressure.
It depends on the pressures of the two fluids involved in the reverse heat exchange within the cooler: water. If the pressure of the circulating water controlled by the device exceeds that of the liquid hydrocarbon, then water will leak into the liquid hydrocarbon, preventing it from being transported forward and thus causing overpressure. Otherwise, it’s as mentioned above.
It’s likely that the liquefied gas vaporizes in the circulating water, creating an air blockage; since the pressure of normal circulating water is around 4 kilograms, which is less than the pressure of liquefied gas
The reason is as mentioned on the first floor and above: due to air resistance, the circulation of water is reduced or comes to a halt, which causes the temperature after cooling to rise; this in turn leads to an increase in backflow and thus an increase in pressure!
The operating pressure of the general gas phase is usually higher than that of the circulating water, so the first scenario generally does not occur!
The pressure in the vapor column is around 18-28 kilograms, while the pressure of the common medium is 4-5 kilograms; as a result, liquid hydrocarbons leak into the water, causing gas blockages in the cooler. This prevents effective cooling, leading to excessively high reflux temperatures and thus overpressure in the column.
After a leak in the heat exchanger, an air blockage is created, which severely affects the heat exchange efficiency; as a result, the backflow temperature rises, leading to overpressure