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

Fertilizer plant

Urea plant vacuum systems are specialized in that the design must incorporate features in the vacuum condensers due to exothermic heat reaction liberated by chemical reactions that occur. The design requires a combination of vapor-liquid and chemical equilibrium. It also is necessary to minimize the amount of ammonia gas exiting the vacuum system.

Graham has installed a number of urea plant vacuum systems throughout the world that are providing excellent performance, in many cases, they are running at capacities in excess of 100% without sacrificing vacuum in the concentration vessels. Graham also has provided a number of high pressure carbamate liquid eductors where high pressure carbamate solution is boosted in pressure with liquid ammonia for return back to the reactor.

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