ChemE 468 - Air-Pollution Control Equipment Design

Course Description

Credits: 3.  Designs to control air pollutants from stationary sources. Procedures for calculating design and operating parameters. Fundamental mechanisms and processes of gaseous and particulate control equipment for absorption and adsorption of gaseous pollutants; electrostatic precipitation and filtration of particular pollutants. Actual case studies. Offered: jointly with CEE 494/M E 468; W.

Designation

Prerequisites

None.

Textbook

Optional Text:  Air Pollution Control: A Design Approach 3rd Ed., by C.D. Cooper and F. C. Alley,Waveland Press,  2002.

Course Objectives

Each student will demonstrate a basic working knowledge of the fundamental concepts and problem solving techniques about the design of air pollution control equipment.  Students will practice calculating the air pollution control collection efficiencies of various air pollution control devices.

• Air quality standards, Emission standards, Government regulations.
• Design considerations, process flow sheets, emission measurements.
• Dynamics of particles in fluids, aerodynamic capture of particles by objects (drops & fibers). Kleinschmidt equation relating overall particle collection efficiency to collection efficiency of single object and fraction of gas swept.
• Cyclones, Fabric Filters.  Design of fabric filter baghouses for particle collection.  Case studies of filter baghouses at steel plant in West Seattle and at coal fired power plants.
• Design of wire mesh and fiber filters for control of particle emissions.
• Case study of demister filters on recovery boiler emissions at sulfite pulp mill.
• Wet scrubbers Design.
• Electrostatic precipitator mathematical model & practical design.  Case study of electrostatic precipitator and limestone slurry SO2 scrubber at coal fired power plant near Centralia, WA and electrostatic precipitator at kraft pulp mill in Tacoma, WA.
• Absorption of gaseous pollutants into liquids, design of packed absorption towers and spray towers.  Countercurrent &co-current designs.  Case study of SO2 absorption into aqueous NH4OH at sulfite pulp mill in Everett, WA.
• Catalytic converter for control of HC, CO, & NOx emissions from gasoline engines.
• Control of diesel engine emissions with particulate filter and catalytic converter.
• Control of stationary source NOx emissions with selective catalytic reduction.

Three 50 minute sessions per week.

Engineering

(a) an ability to apply knowledge of mathematics, science, and engineering

(e) an ability to identify, formulate, and solve engineering problems