The Powell Chlorine/Sulfur Dioxide Eductor is suitable for use in liquid and gas applications and was developed to safely evacuate chlorine or sulfur dioxide cylinders, tankers, rail cars, and piping systems. The unit is based on a unique manufacturing concept, and is custom sized for each application. Sodium hydroxide is typically used for the motive liquid.
Liquid Chlorine & Sulfur Dioxide Evacuation Test
About the Test
On October 8, 1992, Powell Fabrication & Manufacturing, Inc. released a total of 500 pounds of liquid chlorine and 300 pounds of liquid sulfur dioxide in 50 pound batches . The batches were released into a containment sump to evaluate the performance of the liquid eductor option to remove these chemicals in liquid form from containment sumps. A series of test were run using a 2" eductor (2L) and a 3" eductor (3L).
The liquid chlorine and liquid sulfur dioxide testing verified the ability to pull liquid chlorine or sulfur dioxide from a sump into an eductor with 15' of lift using caustic as the motive liquid. The eductor maintained a vacuum in the liquid piping.
The results of the most significant testing are listed in the table below. The result of the first tests were not used due to insufficient data collected during the beginning tests. The average rate of removal does not include the first part of each test since the removal rate was higher when filling the loop and should not be considered in the average.
Video Footage from the Liquid Chlorine and Liquid Sulfur Dioxide Evacuation Test, Performed by Powell. Video shows liquid chlorine being transferred vertically 15' with a 3L Eductor at the average rate of 12 pounds per minute.
Chlorine
Device Type
Lift
Avg. Rate of Removal (# / Minute)
2L Eductor
15'
6.0
2L Eductor
15' - 12'
6.0
2L Eductor
0'
26.0
3L Eductor
15'
12.0
Sulfur Dioxide
Device Type
Lift
Avg. Rate of Removal (# / Minute)
2L Eductor
15'
5.0
2L Eductor
0'
13.5
3L Eductor
15'
6.0
3L Eductor
0'
44.7
Conclusion
The Liquid Eductor installation is a viable method to remove liquid chlorine or liquid sulfur dioxide from collection sumps up to a maximum of 15 feet lift. The flow rates achieved by using the eductor system significantly improve the cleanup time of a chlorine or sulfur dioxide spill. Due to design considerations with respect to pump size and required horsepower, the 2L eductor is the most practical unit to be installed in the Powell Chlorine or Sulfur Dioxide Scrubber system.
