Bias flow in bulk packed towers
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The nitrogen-water tower in our plant is a packed-bed tower; during operation, the water distributor became clogged due to wax present in the circulating water. Later, part of it was cleared by opening and closing the valves. But now the water volumes can be added together, and the temperature at the circulating water outlet is on the high side. Is it the uneven gas-liquid exchange caused by repeatedly opening and closing the valves that leads to flow deviation? May I ask the experts: is it possible for cross-flow to occur in a packed tower?
It’s normal for there to be flow deviation in packed towers; otherwise, why would there be regenerators?
But his unit doesn’t have a redistributor; this phenomenon didn’t occur before, it only started happening recently
We didn’t install a redistributor; this problem only arose due to recent changes in operating conditions
Check if the outlet pressure of your water pump is rising (￣︶￣)↗
Is the distributor clogged? If the distributor becomes clogged, resulting in uneven liquid distribution, this also affects the packing efficiency.
It is the water from the circulating water network that is pumped into the tower, and then pumped out again using a pump. Now the water volumes can be added together
The distributor was clogged, and later the inlet valve was kept opening and closing for some time to clear it. The water volume can now reach normal levels, but the possibility of a clogged distributor cannot be ruled out. It might be a local blockage