Venturi Scrubber

Ceilcote APC offers a complete line of venturi scrubbers for a broad range of applications. These systems are relatively inexpensive and can achieve high removal efficiencies.

• Fixed Throat Venturi - Model VSV
• Adjustable-Throat Venturi - Model VTV
• Eductor Venturi - Model EVS
• Rod Throat Venturi - Model MTV

 

Fixed Throat Venturi - Model VSV

Used primarily for particulate removal, fixed-throat venturis are recommended for exhaust streams containing particles having a defined size distribution. The venturi throat is then designed to provide the proper gas acceleration and liquid droplet shearing to ensure adequate contact between the particulate and recycle liquid for impingement. The new larger particle/droplet then is separated from the gas streams by gravitational forces and impingement on an entrainment separator installed downstream of the venturi. Throat pressure drop is a function of particle size. The smaller the particle to be removed, the smaller the throat and the higher the pressure drop. Venturis are also capable of achieving moderate gas absorption for soluble/reactive gases.
Back to Top

 

Adjustable-Throat Venturi - Model VTV

The operation of the adjustable throat design is similar to the fixed-throat except the throat size and pressure drop can be adjusted by means of a movable internal bullet. The bullet position is set using a linear actuator and can be moved to maintain a fixed pressure drop for applications with variable exhaust volumes.
Back to Top

 

 

 

 

Eductor Venturi - Model EVS

Eductor venturis are different than standard venturis in that they utilize higher pressure liquid flow to create or induce the gas flow into the scrubber. They are effective for both gas absorption and removal of high loadings of large particulate. For very small volume applications (<100 CFM) eductors can be used in series to achieve removal of gaseous contaminants from 95-99% efficiency. They are also effective for scrubbing gas streams containing high concentrations of contaminants since they are less sensitive to gas velocity than other types of scrubbers and can contact the gas with a large volume of liquid containing necessary scrubbing agents and absorbing high heats of reaction. Eductors are sometimes used in conjunction with packed towers for emergency scrubbing of process vents or storage tanks.
Back to Top

 

Rod Throat Venturi - Model MTV

The rod or multi-throat venturi is suitable for high loadings of coarse particulate. The throat design utilizes a series of parallel rods or pipes to increase gas and liquid velocity for impingement of particulate. The gas exiting the throat section then turns horizontally into a baffle chamber to knock down the liquid droplets followed by a chevron blade entrainment separator for final cleaning. This design has been used effectively on applications in both the foundry and mining industries for removal of coarse solids such as sand and crushed rock.
Back to Top