GD Nash Steam Jet Ejector

GD Nash Steam Jet Ejector
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While steam ejectors are very reliable, their actual efficiency is low in comparison to all other vacuum technologies. So, there is an inherent energy gain attained by moving to a different technology employed. The transition to other vacuum technologies has been very slow because no one wants to be the first to try out a new technology and bear the brunt of the learning curve.

Fortunately for refineries and chemical plants, there is a documented history of using hybrid vacuum systems in this application. Nash pioneered this hybrid technology when they combined their two technologies - steam ejectors and liquid ring vacuum pumps - in the 1980's to make a highly efficient and extremely reliable vacuum system.

Retrofits to meet current plant requirements are common and integral to reaching maximum efficiency and throughout. Recent advances in 3-D modelling and equipment development provide more opportunities to save on daily utility costs while improving the stability of the system for non-standard conditions.

These advances have led to new liquid ring vacuum pump designs that are 30% more efficient than those of 15+ years ago, and they have increased stability and flexibility when operating at different run rates. Also, current government stimulus programs for energy saving projects can make this the time to share the investment cost and update your vacuum crude tower. Investing to reduce operational costs is an easy decision today because the paybacks are in the range of 6 months to 3 years. This is a golden opportunity to save utility costs, reduce emissions, meet environmental regulations, improve production and ultimately, increase profits.

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