Croll Reynolds Co., Inc.

Hybrid Ejector Vacuum System

Hybrid Ejector Vacuum System

A hybrid vacuum system serves the same function as a steam jet vacuum system; the only difference is that it incorporates single or two stage liquid-ring vacuum pumps; effectively replacing the final ejector and inter/after condenser stages of a conventional multi-stage system.

Liquid Ring vacuum pumps are rotating, positive displacement pumps that can reduce steam consumption and can eliminate the need for high-pressure boilers. The addition of liquid ring pumps allows for lower pressure steam to be utilized by deeper vacuum stage ejectors with negligible impact on system performance. Liquid ring pumps can be configured in three different arrangements based on the process requirement: once through, and partial or full recirculation. The liquid ring pump consumes electrical power instead of steam pressure to raise discharge pressure from the lowest vacuum ejector/intercondenser to atmospheric pressure. Hybrid systems can handle a wide range of gasses, vapors, particular and contaminants without implementing filter separators or traps.

Advantages

These are the primary advantages of installing hybrid systems of traditional multi-stage systems are: 

• Reduced utility consumption.
• Operates using lower pressures steam
• Can be easily installed at ground level