Custom Designed Activated Carbon Injection (ACI) Systems For Mercury Control
As a leader in the purification processes, Norit Americas designs powdered activated carbon (PAC) systems for a variety of needs. These PAC systems pneumatically inject the carbon from a storage silo into the flue gas ductwork of a coal-fired power plant. The PAC adsorbs the vaporized mercury from the flue gas and is then collected with the fly ash in the plant’s particulate collection device.
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An Activated Carbon Injection System has long been recognized as the most effective commercial technology for reducing mercury emissions from coal-fired boiler flue gases.
It is a cost-efficient way to reduce mercury emissions from most coal-fired boilers. An ACI System from Norit can reduce mercury emissions by more than 90% (Depending upon the type of coal being burned and the type of air pollution control equipment installed on the plant).
And Norit has been leading the way in research and development in this industry. Norit Systems have been in operation for more than 15 years.
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Doesn’t it make sense to choose a company with a proven track record in the industry?
Here Are The Standard Features of a
Norit ACI System
Silo
 14-foot diameter, up to 120 feet tall
Welded steel construction with structural skirt
Roof-mounted 24-inch diameter manway hatch with pressure and vacuum relief valve
OSHA-compliant caged ladder to silo roof
Up to three product discharge connections with knife-gate isolation valves
Air fluidization system for reliable PAC discharge
Fill pipe with cap
Paint: SP-6 prep, epoxy prime and finish paint standard
Bin Vent Filter
Pulse cleaned cartridge design
99.999% efficient for particles > 0.5μ
Feed Systems
Rotary valves to fill feed hoppers
Feed hopper
Stainless steel volumetric or gravimetric feeder with metering and conditioning augers
480V inverter duty motor, gear reducer
Speed adjusted with variable frequency drive (VFD)
Pneumatic Conveying Systems
Regenerative blower
Eductor
Automated diverter valve assembly
Truck Unloading Panel
NEMA 4X panel with switches, indicating lights and alarms
Power Distribution and Marshalling Panel
Shop-mounted in silo electrical room or attached to the silo.
NEMA 4X panel
DCS terminal blocks for integration with plant controls
Optional PLC or local control panel for maintenance operation.
Shop-wired and tested
Instrumentation
Redundant radar level transmitters measure PAC level in silo
Blower discharge pressure and eductor suction pressure switches
Bin vent filter ΔP switch
Silo Enclosures
Lighting and convenience recepticals
Space heaters and ventilation fans
Skirt interior wall insulation
PAC Distribution
Custom manifolds with isolation valves and flex hoses
Custom injection lances with mounting flanges
Other Options Available Include:
Stairways – easier roof access
Level Roof Grating – safety for snowy climates
Air compressors and air dryers – if not available on-site
Jib Crane – for equipment access to roof.
Pre assembly and Field Installation
Technical Support for Start-up and Commissioning
On-Site Operator Training
Many others……
For More Details call a Norit specialist at 800-641-9245.
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