Where is the ejector located?

• A. In the Piping
• B. Receiver
• C. In the Tank
• D. In the valve body

Answer: (B)

An ejector works by using a high-velocity motive fluid to create suction and entrain surrounding gas or vapor. Placing it in the receiver makes the most sense because the receiver is the vessel that collects the process gas and liquid; putting the ejector there allows it to directly draw off the vapor from the storage point, helping to maintain the desired pressure and improve separation with minimal piping losses. If the ejector were in piping, it wouldn’t pull from the collection point as effectively; in a tank, locating it there would complicate operation, and in a valve body it would be impractical and hard to integrate. So the receiver is the natural and most effective location for the ejector.