Flue Gas Cleaning Systems

Leveraging technology and specialist know-how to secure superior environmental performance.


Our advanced and reliable flue gas cleaning systems are successfully employed all over the world, consistently achieving minimum emissions standards meeting strict global legislative requirements.

Keppel Seghers Dry Scrubber

Flue Gas Cleaning Systems Our dry scrubbing system is a highly flexible system for the removal of acid components, metals and dioxins from flue gases, resulting in very low emissions.

The acid gas components are removed by neutralisation with hydrated lime – or an equivalent reagent – and simultaneously, the heavy metals and polyaromatic compounds are absorbed by activated carbon or (activated) lignite. The dust and the flue gas cleaning residues are then removed by filtration.

Advantages:

  • Recirculation eliminates pollutant spikes and excursions at the exhaust stack
  • No wall build-up, nozzle clogging or wear
  • Low energy consumption with high availability and reliability
  • Ease of operation and minimal maintenance cost.
  • Maximal energy recovery due to operation at low temperature
  • Minimal investment cost

For more information, download our brochure.

Keppel Seghers Rotary Atomiser/Semi-Dry Scrubbing

Our semi-dry scrubbing system makes use of the Keppel Seghers Rotary Atomiser to capture pollutants by means of producing finely dispersed and homogeneous lime slurry droplets, which are thoroughly mixed with the flue gas.

The acid gas components are removed by neutralisation with hydrated lime – or an equivalent reagent- and simultaneously, the heavy metals and polyaromatic compounds are absorbed by activated carbon or (activated) lignite. The resulting reaction products are solid residues. The dust and the flue gas cleaning residues are then removed by filtration.

Advantages:

  • Project specific installation design that is suited to the waste characteristics
  • Optimum conditions for the neutralisation reactions
  • The Rotary Atomiser is a direct drive system, without transmission, guaranteeing a reliable operation and minimal maintenance cost
  • Compactness of the installation
  • Low noise and vibrations
  • Minimal plume formation
  • Possibility to combine with dry injection of lime or sodium bicarbonate for increased flexibility towards peak inlet pollutants

For more information, download our brochure.

Keppel Seghers Dedinox

Based on proven Selective Catalytic Reduction (SCR) technology, the Keppel Seghers Dedinox system allows for the reduction of nitrogen oxides and simultaneously, the destruction of dioxins/furans in flue gases. This type of flue gas cleaning, in which the pollutants are not only captured, but actually destroyed, is currently considered the best available technology (BAT).

Advantages:

  • Pollutants (dioxins and NOx) are destroyed and not relocated or captured
  • Destruction of dioxins to extremely low levels (0.02-0.001 ngTEQ/Nm³)
  • High degree of operational safety since risk of formation of hot spots on the catalyst is minimal
  • No disposal of dioxin-laden solids, no additional CO and dust emissions
  • Minimum expenditure for operator control and maintenance
  • Variable integration into existing flue gas cleaning systems possible

Keppel Seghers Catfilter

The Keppel Seghers Catfilter is based on the synergy between a high efficiency fabric filter and a bed of honeycomb catalyst – two proven, simple and efficient technologies.

This secure technology consists of adding the honeycomb catalyst modules in one layer above each compartment of the fabric filter. The perfect laminar flow and the low face velocity at the outlet of the bags sealing plate guarantees the high dioxin destruction efficiency of up to 99% with low pressure drop. It can also be combined with ammonia injection at high temperature for the preliminary removal of nitrogen oxides.

The Catfilter is the only integrated solution that solves both the problems of gaseous/particulate dioxins and dust on a minimised footprint and with minimised pressure drop and operational costs.

The simplicity of the concept (no moving parts, no fluid or gas injection) ensures a trouble free operation to:

  • Avoid the plugging of the catalyst and improving the filtration;
  • Avoid the risk of Ammonium Bisulphate (ABS) formation;
  • Increase the availability of the plant;
  • Limited additional footprint;
  • Minimise the exploitation cost.