This course addresses the design and cost of wet scrubbers for control of PM10 and PM2.5. (PM10 as particle matter having a nominal aerodynamic diameter of 10 micrometer (μm) or less.
A wet scrubber is an air pollution control device that removes PM and acid gases from waste gas streams of stationary point sources. The pollutants are removed primarily through the impaction, diffusion, interception and/or absorption of the pollutant onto droplets of liquid. The liquid containing the pollutant is then collected for disposal. There are numerous types of wet scrubbers which remove both acid gas and particulate matter (PM).
This course addresses the design and cost of wet scrubbers for control of PM10 and PM2.5. (PM10 as particle matter having a nominal aerodynamic diameter of 10 micrometer (μm) or less.
(PM2.5 is defined as PM less than or equal to 2.5μm in aerodynamic diameter. In general, “coarse PM” refers to PM10 while “fine” PM refers to PM2.5.)
Topics:
Introduction to Wet Scrubber Systems
Process Description
Capture Mechanisms
Scrubber Types
Spray, Cyclonic Spray, and Tray Towers
Dynamic, Venturi, and Orifice Scrubbers
Other Designs
Configuration and Operation of Venturi Scrubbers
Liquid Storage and Delivery System
Liquid Injection System
Collection Chamber and Mist Eliminator
Waste Liquid Collection and Disposal
Auxiliary Equipment
Design Parameters, and System Performance
Liquid-to-Gas Ratio
Velocity and Pressure Drop
Particle Size Distribution and Loading
Waste Gas Flow Rate, Temperature, and Humidity
Residence Time
Droplet Size
System Design
PM Distribution and Loading
Collection Efficiency
Waste Gas Properties
Psychrometric Chart
Intended Audience: This course is intended for Environmental, Mechanical, Construction, Civil, Electrical, and other engineers whose job description requires a general knowledge of air quality control of airborne particulate matter.
Publication Source: Environmental Protection Agency
