Ejector & Pump Hybrid Systems

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Nash is the industry leader in the design and manufacture of liquid ring vacuum pumps and compressors. There are only a select few companies that are able to leverage their expertise as a steam jet and LRVP manufacture, and Nash is one of them. This allows Nash to engineer solutions to complex vacuum applications while maximizing the benefits of both types of systems.

Nash offers:

Total system responsibility
Experienced staff
The ability to optimize and troubleshoot systems

Typical Applications:

Power Industry - Geothermal: Nash has been the premier global geothermal hybrid exhauster supplier for 30 years. Steam jets and liquid ring vacuum pumps are used to remove large amounts of non-condensable gas from steam, which is extracted from below the earth's crust, while maintaining low operating costs and high turbine efficiency. Given the unpredictability of the process load, a Nash hybrid system offers more stable operation at off-design points better than an all-ejector system, which helps to minimize system interruptions.
Chemical: Replacing the last stage of the ejector system with a liquid ring pump can lower the annual system operating costs by 15%. The pump will increase process reliability by minimizing any steam transients, a common cause of steam ejector failure. Due to the stringent process requirements of constant high suction pressure maintenance, a hybrid system is a natural fit for edible oil applications. In addition, a variety of liquids can be used as the liquid ring, which aids in the chemical recovery process and with water treatment costs.
Oil & Gas Refineries: The use of a Nash liquid ring vacuum pump in the final stage of a steam ejector system provides lower operating costs than an all-ejector system by reducing steam demand and water treatment costs. In certain applications, such as crude oil distillation, a Nash vacuum pump can be used as the last stage, replacing the final jet and aftercondenser. The cost of steam for the final ejector stage is usually greater than the cost of operating the Nash pump. In addition, a variety of liquids can be used as the compression fluid in a Nash liquid ring pump. For example, you can facilitate the absorption of H2S by using amine as the compressant.