Liquid Jet exhausters

The liquid jet exhauster is used to suck, entrain and pump out gases from its source point utilizing a high pressure motive liquid such as water or other liquid. Motive liquid is discharged at a high velocity through a specialized nozzle and sprayed through body and venturi throat & tail. 

Specially designed nozzle creates a full cone spray. The liquid spray covers and seals the exhauster throat and fills the tail portion of the exhauster to create effective self priming action.  The nozzle converts the pressure energy of the motive liquid into a high velocity spray.  When the sucked gas is mixed with the high velocity motive liquid, momentum of the motive liquid is transferred to the suction gas. This transfer in momentum creates vacuum. 

The liquid & gas stream enters the exhauster throat and passes through tail where the velocity energy is converted into an intermediate discharge pressure.  Lower the temperature or lower the vapour pressure of motive liquid a higher vacuum level can be obtained.

MATERIAL OF CONSTRUCTION

Various metals & plastics can be employed for exhauster body & nozzle depending on service conditions, fluid and its properties.  Typically exhausters can be supplied in cast-iron, carbon steel, stainless steel, titanium, Hastalloy, Monel metals.  In plastics PVC, CPVC, Teflon and  Polypropylene can be supplied.

END CONNECTIONS

Threaded or flanged to specific standards as per customer requirement.

ADVANTAGES

• Exhausters have no moving parts

• Very little routine maintenance

• Can be effectively utilized in many gas and air pumping applications.

SERVICE INDUSTRIES

• Chemical
• Pharmaceutical
• Pulp & Paper
• Food
• Textile
• Marine
• Water & Waste water treatment.
• Power

TYPICAL APPLICATIONS

• Vacuum generation in chemical elaborations / Production plants.
• Evacuation of air and fumes from process vessels.
• Exhausting and absorbing soluble gases such as HCl, Cl₂, NH₃, SO₂, CO_2.
• Priming of pumps by creating vacuum and sucking water into pump casing.
• De-aeration of liquid and deaeration gas chambers.
• Initiating siphon effect.
• Vacuum drying.
• Vacuum distillation.
• Desecration of condensers and pressure vessels.
• Evacuation of siphon line on acid plant.
• Evacuation of acid or solvent vapours.