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All Products & Services Activated Carbon Injection System

Activated Carbon Injection System

Activated Carbon Injection System (ACI) for Mercury Control

Activated  Carbon Injection is the most established commercial technology for reducing mercury emissions from coal-fired boiler flue gases.  It is a system in which Powdered Activated Carbon (PAC) is pneumatically injected from a storage silo into the flue gas ductwork where it then adsorbs mercury and is collected along with fly ash in the plant’s particulate collector.

  • Capable of greater than 90% control
  • ACI can be used as a stand-alone technology for Hg control or a key part of an integrated solution
  • Equipment requires a small footprint, and can be easily integrated into your facility’s current APC configuration
  • Effective across a wide range of coals and plant configurations

Carbon Injection

Why Partner with ADA to Meet Your Mercury Goals:

ADA’s Activated Carbon Injection Systems will enable your facility to control mercury to achieve compliance. Our ACI system are robust, reliable, and worry-free because the cost of non-compliance is too high.

  • Recognized experts in mercury control with unparellelled industry experience
  • All systems are backed by ADA’s mercury control guarantee
  • Standard, proven designs for quicker delivery and installation
  • Meet rigorous customer and A/E specifications

Key Product Features of an ACI System:

ADA offerings
  • Dependable, proven technology
  • Top-quality, utility grade components
  • Standard equipment design to reduce cost and minimize delivery times
  • Shop-fabricated and assembled for quality control and reduced installation time
  • Designed and built to meet  utility and A/E specifications
  • High availability and low maintenance
  • Operational flexibility
  • Fully automated, hands-free operation
  • Fail-safe interlocks and alarms
  • In-house CFD modeling to optimize injection grid design for our customer’s ductwork
  • Clean, dust-free operations
  • Comes with ADA’s mercury control expertise and performance guarantees

 CAPABILITIES

  • Project management
  • Project controls and scheduling
  • Formal document control system
  • Full in-house engineering capabilities
  • AutoCAD design
  • CFD modeling using Star-CCM+
  • Extensive experience with A/E firm specifications
  • UL listed panel shop
  • Installation and start-up support
  • Optional system optimization programs available

Standard Features

Silo

  • 14-foot diameter, up to 98 feet tall
  • Welded steel construction with structural skirt
  • Roof-mounted 24-inch diameter manway hatch with pressure 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 strainer and 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 (2 to 3 per silo)

  • Rotary valves to fill feed hoppers
  • Feed hopper
  • Stainless steel volumetric feeder with metering and conditioning augers
    • 480V inverter duty motor, gear reducer
    • Speed adjusted with variable frequency drive (VFD)

Pneumatic Conveying Systems (2 to 3 per silo)

  • Positive displacement blower
  • Wear resistant 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
  • NEMA 4 panel
  • Isolated 480V termination compartment with breakers and VFDs
  • Isolated low-voltage termination compartment
  • DCS terminal blocks for integration with plant controls
  • Optional PLC
  • Shop-wired and tested

Instrumentation

  • Redundant guided wire radar transmitters measure PAC level in silo
  • Feed hopper level switch
  • Blower discharge pressure and eductor suction pressure switches
  • Bin vent filter ΔP switch

Silo Skirt Enclosures

  • Lighting and convenience receptacles
  • Space heaters and ventilation fans
  • Skirt interior wall insulation

PAC Distribution & Injection

  • Custom manifolds with isolation valves and flex hoses
  • Custom injection lances with mounting flanges

Common Options

  • PLC controls with HMI (Allen-Bradley)
  • Gravimetric feeders
  • Cost effective regenerative blower
  • Ceramic-lined eductors
  • Deluxe instrument package
  • Wrap around stairs to silo roof

Experience

ADA-ES, Inc. has the most complete line of mercury control products in the industry, with unparellelled experience.  TO date, we have installed, or currently installing >75 ACI Systems Performed and have preformed >90 full-scale mercury control demonstrations.  Below are the locations and coal types of operating ACI systems by ADA.

Locations