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Wabash Power offers Selective Catalytic Reduction (SCR) systems to pair with any of our rental boilers . Users can lower Nitrogen Oxide emissions (NOx) to 9ppm or less using anhydrous ammonia or aqueous ammonia. Learn more about how our Mobile SCR systems can get you into compliance with your local environmental regulations.

Multiple Options for NOx Reduction

Anhydrous Ammonia Process Control Unit

3’x4’x8’ Stainless Steel Skid Package Includes:

  • Bottle rack for storage of (8) – 150# or 300# – anhydrous ammonia compressed bottles (Enduser to supply bottles).
  • Distribution manifold, regulator and hoses for connection to 3 bottles at one time.
  • Automatic switch over from 3 primary feed bottles to 1 back-up upon detection of low supply pressure.
  • (2) – 3HP Dilution air blowers, with motor starter.
  • Ammonia control piping & instrument air piping with thermal mass flow controller.
  • Allen Bradley Compactlogix PLC controller for ratio control of the ammonia injection based on boiler fuel consumption.
  • All skid mounted hardware and wiring.

Aqueous Ammonia Process Control Unit

Skid Packaged Components for Dilution & Vaporization of Aqueous Ammonia 19% by Weight Include:

  • Structural skid base assembly constructed of 304 SS. Lifting lugs & grounding lugs are provided.
  • Two (2) regenerative style dilution air blowers. Rated: 105 CFM @ 45” W.C. Air intake filter/silencer. Discharge expansion joint, check valve, pressure gauge, and an Orifice plate type flow meter with transmitter and indicator.
  • One (1) 20 KW Electric immersion heater (4” 150# RF flanged), with type K thermocouples on each circuit.
  • Ammonia control piping & Instrument air piping with a thermal mass flow controller.
  • Allen Bradley Compact Logix PLC controller for ratio control of the ammonia injection based on boiler fuel
    consumption.
  • All skid mounted Hardware and wiring.

Distribution Manifold

Duct mounted manifold, all SS construction to be insulated by lessee in the field. 4” header with a 3” 150# inlet connection (8) 1-1/2” branches, and a pressure gauge. Each branch contains a gate valve, orifice plate, and Dwyer Capsuhelics for flow balancing.

Ammonia Injection Grid

All 304 SS construction, 8 injection lances for proper ammonia distribution across the duct.

SCR Reactor Instrumentation

Instrumentation for monitoring the SCR reaction and controlling the ammonia system is enclosed in a NEMA 4 enclosure and has an inlet temperature switch.

SCR Catalyst

Vanadium and titanium based catalyst for reducing NOx emissions from a packaged boiler by 90% (typically 90 ppm to 9 ppm). Catalyst material will be packaged into modules for easy handling.

SCR Reactor Housing

A-36 Carbon steel structure designed to house the SCR catalyst modules in a vertical position above the boiler for vertical up discharge. Weight of duct will be supported by structure steel supports. Duct will be blasted per SSPC-6 and primed with zinc based primer. External insulation, if required, will be by others.

Support Structure and Transition Pieces

Steel structure for supporting the SCR housing straddles the boiler and supports the weight of the SCR duct and catalyst from the ground. Transition pieces available to connect SCR System to Wabash Power’s rental mobile boilers 

Contact Us

Want to know more about Wabash Power Equipment Company? For a confidential discussion about your next boiler rental or power gen project, contact us to schedule a meeting!

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