Title
WET SCRUBBERS
The term “Wet Scrubbers” came into fashion after World War II as people became more aware of the negative effect of many industrial exhausts l on the earth’s environment. Along with other technologies we, Wet Scrubbers were and still are seen as an efficient way of cleansing industrial, commercial and municipal vapor emissions prior to their release into the atmosphere.
Actually, Wet Scrubbers are broken down into a number of categories. Although Wet Scrubbers are most often used for Air Pollution Control applications, the term only refers to the devices used to capture particulate or mists/droplets that behave like particulate. Devices used to capture vapors or odors are called “Wet Absorbers” since they take advantage of a specific liquid (frequently but not always water) having the ability to dissolve a specific gas or gasses.
There are numerous designs all used with the intent of removing solids or mists from gas via physical means and transferring them into a bulk liquid. The overriding concept is to first bring the gas to its dew point with respect to the liquid used. This is done by evaporation and humidification. Very little material removal can occur until the gas is completely at its dew point.
There are a number of methods of moving the material from gas to liquid. All involve collision or “impingement” as it is known in this industry. A number of factors affect the ability of material to transfer. First the smaller the material to be transferred, the more difficult the job. Second the lower the material’s affinity for the liquid, the more difficult the job. Finally the nature of the material in the gas affects removal. Many contaminants must be condensed into a droplet before there is a chance for removal and this has a significant impact on the functioning of the equipment.
Typical commercially available Wet Scrubbers include:
Inertial Impingement Scrubbers of numerous designs
Venturi Scrubbers
Tray Scrubbers
Aerosol Scrubbers
D.R. Technology offers all the above designs. We have over 40 years in the industrial air pollution control business and have spent much time and effort refining our venturi scrubber designs. Our venturi design which uses an aerodynamic plug is the most successful venturi design in the world. D.R. Technology can customize a design specific to an application to achieve the highest particle collection at a given pressure drop which minimizes electrical usage. Our air pollution control equipment also minimizes manufacture and installation costs and maximizes efficiency.
