Distillation problem
Thread Content
When the solvent butadiene recovery tower becomes clogged, the operation to maintain production temporarily is ( C ). A. Increase the vent volume B. Lower the temperature at the bottom of the tower C. Reduce the reflux ratio D. Raise the temperature at the bottom of the tower. What are the reasons? . . .
B. Reducing the temperature at the bottom of the tower means reducing the load
Lower the temperature at the bottom of the tower and increase the reflux ratio to reduce the load inside the tower, by using more reflux to wash the tower trays
It’s not completely blocked; by reducing the reflux ratio, it’s still possible to evaporate liquid and maintain production.
Reducing the reflux ratio increases the flow velocity, which in turn leads to scouring and helps to alleviate blockages