McGill AirClean has more than 40 years of experience solving air pollution control problems for boilers, furnaces, incinerators, and a variety of industrial processes.
During that time, we have helped customers comply with air emission regulation in industries such as glass, wood products, pulp and paper, automotive, chemical, pharmaceutical, food, metals, petrochemical, electrical power and steam generation, hazardous solid waste incineration, and many more.
With our extensive line of air pollution control equipment, we solve problems involving different types and combinations of particulate, acid gas, and volatile organic compound (VOC) emissions. By working with you, we engineer and manufacture an integrated system that will meet the specific requirements of your application.
Our skilled civil, structural, electrical, mechanical, materials, and industrial engineers provide complete engineering resources. Using a network of trade-specific quality subcontractors throughout North America, we safely complete your project on time and within budget. We offer a variety of professional services to fully support the operation of your systems and help reduce your overall maintenance cost.
Our goal is to provide a dependable, long-term solution to your air pollution control problem at the lowest overall cost to you.
Dry Electrostatic Precipitators (ESPs)
Our electrostatic precipitator systems generate a corona to electrostatically charge particulate and remove it from flue gas streams. Each ESP system is designed to provide effective control of particulate emissions, while saving you money by minimizing operating costs. A unique needle/plate collection electrode design uses energy very efficiently, enabling our ESPs to operate economically at low voltage and current levels.
Applications
- Glass furnaces
- Cement kilns
- Coal-fired boilers
- Wood-fired boilers
- Solid waste incinerators
Modular construction
McGill ESPs are constructed of individual modules. Using these modular building blocks, we can provide a broad range of ESP sizes. This modular concept enables us to match your needs accurately, so that the ESP we provide is the right size and price for your application. A modular design is practical for our ESPs because of the high-voltage needle/plate collection electrodes and compact size. It is impractical for conventional ESPs with their large, fragile electrodes.
Wet Electrostatic Precipitators (WESPs)
We have developed a wet ESP system for applications involving sticky or flammable particulate. A washdown system keeps the ESP internals clean to help prevent fires and maintenance problems. Our durable wet ESP systems have solved difficult emission control problems for fiberglass forming and curing ovens, wood dryers, wood-fired boilers, and steel scarfing processes.
Applications
- Fiberglass forming and curing ovens
- Wood dryers
- Wood-fired boilers
- Steel scarfing processess
Fabric Filters | Baghouse Systems
We have the technical expertise to engineer a fabric filter system with the proper air-to-cloth ratio, can velocity, and gas distribution to achieve the lowest possible pressure drop and longest bag life. Our experience with a wide variety of woven and felted bag fabrics allows us to select one that will be most economical and effective for your application. Engineering considerations include the fabric's ability to withstand high temperatures, exposure to acid, and abrasion.
Features
- Modular construction
- Single-point, removable top lids with integral pulsing system
- Wide bag spacing
Applications
- Spreader stoker
- Bubbling fluidized-bed
- Underfeed stoker
- Atomized slurry
- Chain grate stoker
- Cyclone
- Pulverized fuel
- Rotary kiln
- Circulating fluidized-bed
- Incineration
- Gasification
Fuels
- Coal
- Salt-laden hogged fuel
- Solid waste
- Coal
- Biomass
- Oil refuse
- Manure
- Lignite
- Hazardous waste
- Municipal solid waste (MSW)
- Coke
- Culm
- Pitch
- Refuse-derived fuel (RDF)
- Tire-derived fuel (TDF)
- Paint sludge
- Wood waste
- Medical waste
Acid Gas Control, Spray-Dry Scrubbers, and Dry Sorbent Injection Systems
Our acid gas control systems use a variety of chemical reactions to convert acid gases to particulates. We have patented acid gas treatment systems and experience controlling acid gases such as: sulfur oxides, hydrogen chloride, hydrogen flouride, boric acid, and selenium. Our systems are designed to distribute reagent effectively throughout the scrubbing chamber and maximize the reaction time for high levels of acid gas removal. We offer both spray-dry scrubbers and dry sorbent injection systems.
Applications
- Glass furnaces
- Boilers
- Incinerators (municipal, hazardous waste, and medical waste)
Benefits of both dry systems compared to wet scrubbers
- Dry particulate dust discharge
- No sludge
- No dewatering
- Reduced corrosion potential
Spray-dry reagent scrubbing benefits
- High-efficiency acid gas removal
- Low reagent use
Dry reagent injection system benefits
- Low capital costs
- Simple operation
DeNOx Selective Catalytic Reduction (SCR) Reactors
Our deNOx SCR reactors are designed specifically to control NOx emissions on industrial applications. Our systems feature a fully integrated system design that includes modular construction, CFD modeling, a PLC–based control system, a customized cleaning system, a reagent management system, and a catalyst life management system. We offer a single-source performance guarantee and equipment warranty for each reactor system.
Features
- Modular reactor housing
- Easy access to the catalyst
- Computational fluid dynamics (CFD) flow modeling
- Customized catalyst cleaning system
- Ammonia storage and injection systems
- Ammonia/flue gas mixing
- Catalyst life management
- PLC-based control system
- Supplemental temperature control (if needed)
The DeNOx Selective Catalytic Reduction Process
The deNOx SCR process converts NOx emissions into diatomic nitrogen (N2) and water (H2O) vapor. That is accomplished by injecting ammonia (NH3) or urea into the flue gas stream and then passing it through a catalyst bed.
Fundamental process reactions:
4NO + 4NH3 + O2 ➔ 4N2 + 6H2O
6NO2 + 8NH3 ➔ 7N2 + 12H2O
This simplified illustration depicts the basic design, flow pattern, and equipment used in a typical McGill deNOx reactor.
The Design Process and Considerations
Our sales and design engineers will review your process conditions to provide you with the best deNOx control system solution, which includes design analysis of the following:
- DeNOx removal efficiency
- Flue gas chemistry
- Operating temperature
- Catalyst selection
- Ammonia injection location
- CFD modeling and equipment layout
Computational fluid dynamics (CFD) modeling, as shown in this diagram, is a key element in the design of each McGill deNOx reactor.
Source: Mcgill Airclean
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