Ejectors for Gas Introduction in Liquids / Gas Micro Bubbling

Introducing Gas into a liquid stream involves pumping the gas into the liquid which is difficult to handle for most equipment as it involves working with both gas and liquid phases simultaneously.

Crystal TCS's Liquid jet Gas Ejectors are a perfect fit for the application due to their excellent ability to handle and pump a multi-phase mixture.

The Liquid jet Gas Ejector can develop vacuum at their suction connection while maintaining the required discharge heads. Thus gas is directly sucked from the source and no additional gas pump equipment is required.

The Liquid jet Gas Ejector mixes the Gas and Liquid flow and in the process the gas gets finely dispersed inside the liquid in form of fine bubbles.

The intimately mixed gas-liquid mixture if made to discharge to a reactor / liquid tank's bottom further disperses the gas into the liquid and creates a majestic micro bubbling effect in the entire reactor / tank.

The intimate gas-liquid mixing and fine dispersion of gas into liquid maximises the gas liquid contact which is an important aspect of mass transfer process and reactions.

Comparison between Direct Gas injection in liquid and Gas Introduction through Ejectors
Direct Gas injection Gas Introduction through Ejectors
Direct Gas Injection involves injecting gas compressed by a compressor directly into the liquid The Gas is sucked by the Ejector, mixed with a liquid stream and the gas-liquid mixture is injected into the liquid.
The injected gas tends to form slugs inside the liquid. The gas injected by the ejector through the gas-liquid mixture is in form of fine bubbles.
The injected gas slugs rises quickly to the surface and minimizes the interaction (residence) time. The injected gas bubbles rise slowly to the surface and maximize the interaction (residence) time
The surface area of contact between the gas slugs and liquid is very less compared to fine gas bubbles The surface area of contact between the gas bubbles and liquid is very high compared to gas slugs
The minimized residence time combined with low contact area lead to low mass transfer rates The maximized residence time combined with very high contact area lead to very high mass transfer rates
Large liquid heads / height is required to achieve the effect of breaking the injected gas slugs into fine bubbles. Due to the intimate mixing and dispersion of gas into the liquid inside the ejector the size of bubbles in largely independent of the liquid head / height inside the reactor / vessel.
This leads to large equipment sizes and maximizes cost. This keeps the equipment sizes small and costs in control

Superlative Performance Characteristics

  • Liquid jet Gas Ejectors are the best possible solution for gas introduction / dispersion in liquid.
  • Ability to disperse the gas into the liquid in form of very fine bubbles maximizing the gas liquid contact.
  • Ability to suck gas at vacuum pressures and discharge against large discharge heads.

Advantages of our Liquid Jet Gas Ejectors in Gas introduction / Gas Micro Bubbling:

  • No additional requirement of any gas pumping / compressor equipment.
  • Very High Gas Liquid Mass transfer rates
  • Gas Micro Bubble Generation
  • Strong Corrosion resistance.
  • No Moving Parts – Reliable performance and very low maintenance requirements
  • Long Operating life
  • Silent Operation
  • Compact size.
  • Compatible with Hazardous and Flammable environments
  • Design and Construction as per ASME, PED, AD 2000 Standards
  • U-Stamp and CE marking certification (if required)

We manufacture Liquid Jet Gas ejectors in a large range of Materials:

Metals Non-Metals
Carbon Steel FRP (Fibre Reinforced Plastics)
Bronze PVDF (Polyvinylidene Flouride)
Stainless Steel PP (Poly-Propylene)
Duplex and Super Duplex Stainless Steels PVC (Poly-Vinyl Chloride)
6MO Stainless Steels

Applications :

Aeration and Water Treatment
  • Hydrogen based De-nitrification of Drinking Water
  • Oxygen gas Introduction for hard water treatment.
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Biological Sewage Treatment
  • Ozone gas introduction for waste water treatment
  • Oxygen gas Introduction for waste water treatment
  • Atmospheric air entrainment in Sewage Treatment
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Water Cleaning & Separation
  • Separation of Oil and Water from the Produced Water in Oil Extraction
  • Froth Flotation Process in Mineral Ore processing
  • Paper Deinking in Pulp & Paper Industry
Venturi Loop Reactors