Environmental solutions
Environmental solutions
Air pollution control
Combined/multi-stage flue gas cleaning systems
Dry Sorbent Injection (DSI)

Dry sorbent injection (DSI)

In the DSI system, calcium or sodium-based alkaline sorbents are injected into the flue gas to remove acid gases (SO₂,SO₃/H₂SO₄, HCl), volatile organic compounds (VOCs), and metals (Hg, …). Injection of the sorbent is simple and takes place between the air heater and the PM control equipment.

The dry sorbent injection system from ANDRITZ is well proven, cost effective, and suitable for various fuels as well as industrial and power generation applications. The DSI system has been optimized continuously in close collaboration with sorbent producers.

Lime Silo

The key features of the ANDRITZ dry sorbent injection system are:

Optimized reduction of acid gases,
Volatile Organic Compounds (VOC) and metals
Low capital and operating costs (low energy consumption)
Simple and robust design
Can be adapted to small or large flue gas volumetric flows
No discharge to wastewater flows
Collaboration with sorbent suppliers to select the most reactive sorbent for the given flue gas composition and the level of pollutants to be reduced

Novel Integrated Desulphurization (NID) - EKP Unit 3

Novel Integrated Desulfurization (NID)

The semi-dry desulfurization combines the injection of a suspension/solution of alkaline reagent into the sulphur-rich flue-gases before removing the resulting product by filtration (Fabric Filer or Electrostatic Precipitator).

Spray Dryer Absorber (SDA)

The semi-dry desulphurization combines the injection of a suspension/solution of alkaline reagent into the sulphur-rich flue-gases before removing the resulting product by a Fabric Filter.

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For general questions related to ANDRITZ´s air pollution control technologies (new-build, upgrades & retrofits, inspections, services, spare parts, land-based or maritime equipment), please contact us via our

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