Atmospheric Air Ejectors | Liquid Ring Pump Ejector
Atmospheric Air Ejector is essentially Air Ejectors that operate on the basis of the jet Venturi principle and work in combination to liquid ring pumps. Atmospheric Air Ejectors are installed before the vacuum pump such that the ejector outlet is connected to pump inlet. During operation the pump creates vacuum at its inlet i.e at outlet of the atmospheric ejector. Due to the jet venturi principle Atmospheric air ejectors are able to create a pressure differential across its inlet and outlet openings. Thus if the ejector outlet is at vacuum it can create more deeper vacuum at its inlet. Atmospheric Air Ejectors utilize the energy in air from atmosphere to create this pressure differential.
Vacuum created by a Liquid ring pump ejector is limited by their sealing water temperatures. For liquid ring pumps operating with ambient water their vacuum is limited to 35 – 40 Torr i.e ~50 mbar. Hence Atmospheric Air ejectors when used in combination with the liquid ring vacuum pump is able to create more vacuum and extend the pump capacity. Atmospheric Air Ejectors can extend the vacuum upto 8 – 20 Torr i.e 10 – 26 mbar
As Atmospheric Air Ejectors use air from atmosphere / ambient for operation they do not need any additional input in terms of electricity and can be directly mounted on liquid ring vacuum pumps.
Typical Applications
- As a vacuum booster for a liquid ring vacuum pump
Features Of Atmospheric Air Ejector
- 4 Custom designed models – ensures perfect fit for your application.
- 4 Ability to retrofit onto an existing pump.
- 4 Ability to develop deep vacuum upto 8 Torr i.e 10 mbar
- 3 Available in multiple type of end connections – Flanged, Threaded
- 2 Available in multiple connection standards – ASME, DIN , JIS
- Available in a large variety of materials
| Metallic | Non Metallic |
|---|---|
| Carbon Steel | PP (Poly-propylene) |
| Stainless Steels SS 304 / SS 316 | PTFE (Poly-tetra-fluoro-ethylene) |
| Duplex & Super Duplex Stainless Steel | |
| Exotic metals (Hastelloy, Inconel, Titanium) |
Benefits Of Atmospheric Air Ejectors & Liquid Ring Pump Ejector
- 1 Use Atmospheric Air as energy input / fuel – hence no additional infrastructure needed for operation.
- 2 Static Device without any moving parts – ensure long reliability and maintenance free operation.
- 3 Tolerate entry of liquids & solids particles into the ejector – avoids abrupt breakdowns.
- 4 Non sparking operation – can be safely used in hazardous & flammable areas
- 5 Manufactured in multiple materials – allows using the most cost-effective & chemically compliant materials for the application.
Frequently asked questions (FAQs) about Atmospheric Air Ejectors:
An atmospheric air ejector is a special air ejector which works in tandem with a vacuum pump and is used to remove air or other non-condensable gases from a process or system, typically by utilizing ambient air as motive fluid.
Atmospheric air ejectors are essentially used as a booster to increase the vacuum obtained from a liquid ring vacuum pump. They are commonly used in power plants, refineries, chemical processing plants, and other industrial facilities where high vacuum is required for the removal of non-condensable gases from condensers, evaporators, and vessels
Atmospheric air ejectors do not require any separate energy input for their operation, They can boost the vacuum obtained from the liquid ring vacuum pumps. As they have no moving parts, they operate reliably and do not require regular maitainance.
Atmospheric air ejectors cannot operate on their own and require a vacuum pump for their operation
Sizing an atmospheric air ejector is largely dependent on the required vacuum and flows. Additionally the capacity of the backing vacuum pump plays a pivotal role in the sizing.
Atmospheric air ejectors generally require minimal maintenance due to their simple construction and lack of moving parts. Periodic inspection and cleaning of nozzles, diffusers, and inlet filters may be necessary to ensure optimal performance.
Atmospheric air ejectors are designed to handle gases or vapors. They can handle liquids & solids if present in small traces within the gas flow.
