After the spray tower undergoes gas-liquid heat exchange, a lot of gas in the liquid cannot come out.
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The flow diagram is as shown in the figure. After N2 contacts the low-temperature water for heat exchange, it drops to below the dew point to achieve the purpose of dehumidification. Recently, a problem has arisen. After the gas-liquid contact, many nitrogen bubbles in the water cannot come out. After passing through the pump and plate heat exchanger, the gas It will remain in the pipes and heat exchangers, even in the pump body, causing the pump outlet pressure and the heat exchanger outlet pressure to drop more and fluctuate greatly, which in turn causes the return spray volume to drop. How to solve this problem? Can anyone help?
It may be that the liquid level at the bottom of the tower is too low, and the nitrogen in the liquid enters the pipeline before it can be separated. You can consider increasing the capacity at the bottom of the tower, or adding a tank to increase the inventory.
Another possibility is that the spray volume is too large, causing the gas to fail to rise in the tower.
Is the operating pressure of the tower too high?
If it appeared recently, take out the normal parameters before and compare them with the current ones, and you will definitely be able to find the difference.
The spray volume is too large, causing the gas to fail to rise in the tower. Flooding is more likely.
The abnormality of bubbles at low temperatures is slightly slower. Is the liquid falling too fast? It is recommended to increase the height and residence time of the liquid in the tower.