Venturi Scrubbers

Fume, Dust Control, and Ventilation

Series 720 Venturi Scrubbers

HEIL Series 720 Venturi Scrubbers are designed to efficiently remove fumes, dust, solids, and aerosols as small as 0.1 micron. The scrubbing liquid, most commonly water, comes into contact with the particulate laden gas stream in a highly turbulent, high-velocity venturi throat. As the droplets and particulate matter interact, they begin to agglomerate in the diverging or evase section of the venturi.


The entrained droplets, contaminated with the particulate matter are removed from the gas stream by means of a cyclonic separator. The cleansed gas exits the top of the cyclone, while the recovered scrubbing liquid is returned to a separate sump tank for recycle. By selecting the appropriate pressure drop, assessed in relation to throat velocity, efficiencies of more than 99 percent can be achieved over the entire range of particle sizes.

Although standardized in size and capacity, each individual unit is custom designed and engineered to meet the specific requirements of each application.

Series 720 Applications

HEIL Series 720 Venturi Scrubbers have proven performance records for fume and dust control in the fertilizer industry for the general ventilation of specific processes, foundries, chemical plants, pulp and paper, food and food processing smelting, frit and glass, dyestuff, aluminizing processing, galvanizing, and chemical waste  incinerators.

The Series 720 Scrubbers are effective for the removal of  submicron size particulates, both solid and liquid, heavy particulate loads that would clog other devices, and gummy, tacky or scaling materials.

Scrubber with High Rate of Efficiency and Low Costs

Series 720 Features

Principal features of the Series 720 Venturi Scrubber:

Low maintenance costs – Internal parts are stationary, fixed, and will not degenerate after wear. Large orifice liquid spray nozzles are used to provide uniform distribution of liquid into the incoming gas stream. The spray nozzles have large orifices designed to be non-clogging. Nozzels are strategically located so that they can be removed for inspection and /or replacement without having to shut down the equipment.

High-efficiency – Proper sizing and selection of pressure drop results in efficiencies exceeding 99% for particles as small as 0.1 micron. A removable throat allows new inserts to be added, to increase or decrease the pressure drop in response to changing gas stream conditions.

Low initial cost – Pre-engineered standard designs are available in capacities starts at 1,800 CFM to 67,000 CFM.

Extended service life – Individual units are designed with maximum corrosion resistance as a primary consideration. The wide selection of corrosion resistant material features rigidon FRP (fiber reinforced polymer) as a standard material with stainless steel and other alloy construction available.

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Contact Information

HEIL Engineered Process Equipment Inc.

37000 Center Ridge Rd,
North Ridgeville, OH 44039

(440) 327-6051   Fax: 440-327-7088