Why is there negative pressure at the top of the light and heavy gasoline separation tower?
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This post was last edited by Refiner on 2019-5-29 06:53. Why is there negative pressure at the top of the light and heavy gasoline separation tower?
Theoretically, a negative pressure at the top of the tower occurs when the amount of gaseous material at the top is less than the amount of liquid phase extracted after cooling that gaseous material; this imbalance is what causes it. It is recommended to adjust the top of the tower cooling temperature and reduce the extraction volume appropriately. Factors causing abnormal readings from the instruments need to be ruled out.
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The load on the unit is low, or the temperature of the circulating water in the top condenser is low, or there is sufficient excess area in the condenser; as a result, the temperature of the oil and gas after cooling at the top of the tower becomes too low, creating a negative pressure.