1988 Volume 14 Issue 1 Pages 126-130
Gas entrainment by liquid flowing downward into a downcomer was considered to be applicable as a method of gas transport. By using downcomer s of different diameter and length, the gas entrainment was experimentally examined.
The flow pattern in the downcomer changed with increasing liquid flow rate : annular flow, slug flow, and mixed flow. The ratio of gas/liquid flow rates showed the maximum during liquid flow rate in the slug flow regime. Under the present experimental conditions, the maximum ratio of gas/ liquid flow rates increased with decreasing downcomer diameter.
