Ammonia cooler anomaly
Thread Content
Dear colleagues: Our ammonia coolers are designated as 1# and 2#. The 1# ammonia cooler is of the two-in-one type, with one side used for cooling the make-up gas and the other side for cooling the circulating gas. Currently, an abnormal situation has arisen: the temperature of the gas cooled on the make-up gas side has increased from 7°C to 15°C, while there is no change on the circulating gas side. After raising the liquid level in the ammonia cooler, the temperature on the make-up gas side was brought down to around 13°C, but the temperature on the circulating gas side also dropped to negative values. What could be the reasons?
The specific structure of the device is unclear; it is estimated that the two sides are connected together
The ammonia side is shared, while the two gas sides run inside the pipes
From your description, the circulation gas side is normal while the make-up gas side is abnormal. The temperature of the circulation gas matches the liquid level in the ammonia cooler, but there is an issue with the make-up gas side. I wonder if you have any instrument points for monitoring the pressure difference; it might be useful to check whether the pressure difference on the make-up gas side is too high, as this could indicate blockages in the tubes