Method: Vary net vapor rate, no make-up gas.
Process: Vacuum systems. Must always have vapor product.
Advantages: Easily implemented in systems with ejectors
directly connected to their condensers.
Disadvantages: Only non-condensable material is available
for recycle. Relatively large recycle line and control valve often
required. Increased possibility of inert blanking in condenser.
Process must be compatible with recycle stream.
Application: Recycle to drum or to upstream of ejector.
Variants:
Configuration notes: In a steam driven system, the condensate
drum requires a separate water draw if the condensate is immiscible
with water.
Operation: Recycle gas moves the vacuum jet ejector along
its operating curve. The higher the load to the ejector, the higher
the ejector suction pressure.
Warnings:
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