Ejector Applications

Crude oil vacuum distillation	Organic motivated systems	Hybrid vacuum systems
Petrochemical	Fertilizer plant vacuum systems	Metals vacuum degassing
Edible oil deodorization	Thermal compressor	Space simulation

Organic motivated systems

Use of alternative motive fluids may offer an advantage for your application. Graham has proven installations using ethylene glycol, monochlorobenzene, cyclohexane, methanol, phenol, and refrigerants as the motive fluid. Ejector systems using motive fluids other than steam should be considered when any of the following conditions exist:

when it is desirable to recover product for use or disposal without water contamination and associated expense of removal.
when solids present or process vapors deposit in ejectors, but dissolve in an organic fluid.
when backstreaming of steam into the process cannot be tolerated.
when the presence of water may introduce a serious corrosion problem.
when contaminant scrubbing is easier in the absence of water.
when it is desirable to reduce or eliminate air and water volatile organic compound contamination.

Fully packaged cyclohexane motivated ejector system.

The main advantages of using an organic fluid for an ejector are the motive fluid acts as a solvent for the process vapors, the process is not contaminated with steam/water, chemical treatment problems are minimized, and the total energy requirements are considerably less than if steam were used as the motivating fluid. An organic motivated ejector system most often is a packaged, self-contained system that includes ejectors, condensers, a vaporizer, coolers, pumps, controls, piping, all auxiliaries, and packaging.

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