Air pollution control


ANDRITZ Inc. is a specialist in providing air quality control technology for the power generation and heavy industrial markets in North America.

With 90+ years’ experience in air pollution control technology, ANDRITZ Inc. is a leading supplier to the power generation and heavy industrial markets. Today, ANDRITZ Inc. technologies for the removal of nitrogen oxides, sulphur oxides, mercury and particulates make a significant contribution to air quality and the environmental compatibility of fossil-fired power stations and industrial processes. ANDRITZ Inc. is one of the most experienced air pollution control technology providers in North America.

Specialized in the areas of

  • Air pollution control technology
  • Project management
  • Procurement
  • Engineering
  • Installation
  • Commissioning and start-up services
  • Performance assessment and optimization

The objective is to provide proven, optimum, and custom-tailored solutions for any problem concerning particulate control, desulphurization, heavy metals or the removal of nitrogen oxides to ensure a plant`s continuous compliance with environmental regulations.

Circulating Fluidized Bed (CFB) scrubber

With more than 100 installations worldwide, the ANDRITZ CFB scrubber has established itself as the state-of-the-art dry scrubbing technology and has been demonstrated on PC and CFB boilers burning a wide range of fuels, including coal (bituminous, sub-bituminous and PRB), pet coke, peat, and biomass as well as numerous industrial processes.

Notable features

  • Next generation dry scrubbing technology
  • Lowest operating and maintenance costs
  • Unique synergy with CFB boiler
  • Innovative multi-pollutant control
  • Lowest emission technology (98%+ SO2 removal and 99%+ HCl and HF removal)
  • Able to meet the most stringent emission requirements on a one hour average over a broad range of operating conditions
  • Superior mercury removal
  • Performs equally well with fabric filter or electrostatic precipitator
  • Units operating at 300 MW and in a single CFB absorber vessel

Pulse jet fabric filter

ANDRITZ's technology experience has been earned through the installation of more than 80 fabric filter systems worldwide. These filters treat approximately 32 million ACFM of flue gas, primarily at coal-fired boiler power plants, but also including waste incinerators, biomass boilers and other industrial processes. The fabric filters are mainly used for meeting the most stringent particulate emission requirements, but are also used for adsorption or the absorption of partially gaseous pollutants utilizing ANDRITZ provided CFB scrubbers or dry sorbent injection (DSI) systems.

Notable features

  • Modular designs up to 150 MW
  • Structural designs up to 500 MW in a single fabric filter casing
  • Filter bags up to 10 m in length
  • High- and medium-pressure cleaning system designs
  • Filter bag life in excess of five years
  • Unparalleled fossil fuel experience
  • Ideal solution for dry scrubber applications, low sulphur, and PRB coals
  • 99.99%+ particulate removal, with demonstrated emissions less than 0.005 lb/MMBtu

Dry Sorbent Injection Systems (DSI and ACI)

ANDRITZ Inc. has provided over 50 dry sorbent injection systems worldwide. These installations are handling hydrated lime or sodium bicarbonate (SBC) for SO2, SO3/H2SO4 and HCl removal as well as Powdered Activated Carbon (PAC) for mercury removal.

Notable features

  • Complete shop fabrication and equipment assembly available within skirted silos up to 14’ diameter
  • Larger field erected silos up to 40’ diameter where required
  • Well-proven, redundant gravimetric feed system design that provides high system reliability and availability
  • Lime, Trona, SBC and/or PAC feed systems designed for completely automatic operation
  • No operator handling or exposure to sorbents
  • 90%+ SO2 removal, 95%+ HCl and SO3 / H2SOremoval and 95%+ Hg removal

Wet Electrostatic Precipitators (WESP)

The WESP is used to collect sub-micron particulate and aerosols (PM10) from gas streams.

Notable features

  • Vertical tube and Honeycomb designs
  • Horizontal types
  • Ideal for wet scrubber applications

Selective Catalytic Reduction (SCR)

More than 60 power plants, incinerators and industrial facilities are equipped with ANDRITZ’s high performance SCR technology corresponding to an installed capacity of over 18,000 MW (equivalent) worldwide. The majority of these units are high- or low-dust installations in the power generation market. ANDRITZ also has significant experience with tail-end designs typically used on waste / sludge incineration and biomass boilers.

Notable features

  • High-dust designs for coal-fired boiler applications
  • Low-dust designs for gas-fired power generators
  • Tail-end (cold side) designs for coal-fired, biomass and incinerator applications
    • ANDRITZ has the only coal-fired tail-end installation in the US
  • Ammonia injection grid and vortex mixer
  • Experience with aqueous/anhydrous NHand urea
  • High NOx removal efficiencies (95%+)

ANDRITZ Inc. | Columbia

Contact us
13560 Morris Road, Suite 1250
30004 Alphatetta, GA