2 replies to this topic

[rabindra]

In our Vacuum Column we have three ejectors (of different capacities) which are run in parallel based on throughput and load. The inlet pipe size of the process side to the ejectors are are different. The process side inlet have manually operated butterfly valve and the steam side inlet have remote operated ball valve.

 

While only one or two ejectors are in operation, should we close the process side valve of the ejector(s) which is/are not in operation, to avoid ejector outlet fluid from running ejectors to recirculated back to the vacuum column?

 

My boss says we should not close the process side valve, and I disagree.

 

File attached for reference.

Attached Files

•  ejector.xls   118KB   26 downloads

[Zauberberg]

Does your boss know that fluids flow from higher pressure to lower pressure area? It seems like a good idea to buy him a textbook on fluid mechanics for his next birthday.

[Pronab]

Rabindra: You are right. Even you should close steam valve of stand-by ejector.