Spray Pattern Videos

Approvals and Certifications

BETE Fog Nozzle, Inc., one of the world's leading spray nozzle manufacturers, designs and manufactures
the highest quality Industrial Spray Nozzles

Application Intake Sheets

Venturi Scrubbing Nozzles

A Venturi scrubber is a wet-scrubbing process that uses direct contact between the gas to be scrubbed and the liquid agent. It derives its name from and utilizes the Venturi effect, in which a fluid increases its velocity as the area through which it is flowing decreases.

In Venturi scrubbing, the gas to be scrubbed flows through a duct that narrows in cross-section. This narrowing increases the velocity of the gas. Water is usually sprayed axially into the narrowest section, known as the throat, with the spray sized to fit the cross section of the duct. The shear forces applied to the droplets caused by the high velocity air atomizes the water quickly. The high gas speed in the throat combined with the highly atomized liquid causes more effective mixing and creates better gas to liquid contact. This condition causes highly efficient particle collection and can be used for certain gas scrubbing applications. Downstream of the narrow section, the duct expands back to its original size and the liquid with the contaminants are collected and removed.

Selecting a Venturi Scrubbing Nozzle:

The NCJ (Hollow Cone) and NCK (Full Cone) are narrow angle injection nozzles that are recommended for Venturi scrubbing. The design of these nozzles creates a hard-driving, high velocity spray. These nozzles can be run at high pressures and flow rates.

Many other options, such as the SpiralAir nozzle or Flat Fan nozzles, are also available to fit the performance and capacity of your units specifications. Additionally, lance assemblies are available for convenience. BETE’s engineers can do the necessary calculations to find the right standard nozzle or design a custom nozzle just for your application.

Common Venturi Scrubbing Uses / Installations:

Venturi nozzles are commonly used in air pollution control to scrub particulates from a gas stream. In certain cases, venturi scrubbers can also be used to scrub gaseous pollutants.

Typical operating conditions for this application are listed for each nozzle

NCJ
NCJ
60-100 psi
4-7 bar
0.3-15 gpm
1.1-57 L/min
49-124 scfm
59-150 Nm³/h
20°-60°

NCK
NCK
60-100 psi
4-7 bar
0.3-15 gpm
1.1-57 L/min
49-124 scfm
59-150 Nm³/h
20°-60°

SpiralAir
SpiralAir
60-100 psi
4-7 bar
0.3-15 gpm
1.1-57 L/min
49-124 scfm
59-150 Nm³/h
20°-60°

Home

Industrial Spray Nozzle Applications