With the rising costs of utilities, Crystals International, Inc. (Plant City, Fla.), a producer of freeze-dried products for the chemical process industries (CPI), was exploring various methods to reduce energy…

Three hybrid ejector/liquid-ring vacuum pump systems, operating on low-pressure steam process vacuum for a Milwaukee biotech manufacturer.  When production runs are measured in kilograms, economic and reliable vacuum becomes more important…

The Stepan Company, headquartered in Northfield, IL, is a major manufacturer of basic and intermediate chemicals with modern production facilities located in Illinois, California, Georgia, New Jersey and Grenoble, France.…

Kalama Chemical, Inc. (Kalama, Wash.) produces fine and specialty chemicals for chemical intermediates, corrosion inhibitors, food preservatives and flavors. Its flavor and fragrance products are especially heat sensitive, so distillation…

Figure 1. In total, this illustration represents a four-stage ejector system with two surface-contact intercondensers. A simple single-stage system would comprise only the section in the outlined box. In either…

Steam-jet vacuum systems combine ejectors, condensers and interconnecting piping to provide relatively low-cost and low-maintenance vacuum pumping. These systems operate on the ejector-venturi principle, which relies on the momentum of…

Steam-jet vacuum systems combine ejectors, condensers and interconnecting piping to provide relatively low-cost and low-maintenance vacuum pumping. These systems operate on the ejector-venturi principle, which relies on the momentum of…

Steam jet ejectors offer a simple, reliable, low-cost way to produce vacuum. They are especially effective in the chemical industry where an on-site supply of the high-pressure motive gas is…