This technology has been used now for more than 20 years in the ceramic industry and is known there as the best available technology for selective non-catalytic gas / solid reactions.

Furthermore the packed bed filter technology can be used in certain plants for the separation of particles and organic components in the released biomass and waste incineration flue gases.

Almost any reactive or catalytically effective material which is able to trickle sufficiently can be used in granulate form as adsorbent / absorbent for the separation of specific gaseous pollutants.

In the Babcock Noell packed bed filtering plant, the reaction between the adsorbent, usually calcium carbonate (limestone) and the pollutants (mainly HF, SO_x and HCl) in the flue gas, takes place in the reaction zone, in which the adsorbent sinks by gravity and through which the flue gases are passed.

The BNG packed bed filtering plants can deal with gases at temperatures of up to 450° C and, therefore, are very efficient in reducing HF, SO_x and HCl emissions from flue gases.

Characteristics:

• Recommended Best Available Technique (BAT) according to the BREF issued by the European Integrated Pollution Prevention and Control Bureau.

• Highly efficient adsorbent utilisation

• Low pressuere drop

• For use up to 450° C

• Modular design allows extention of reaction zone at any time for future requirements

• Fully automated operation

• Low investment and operation costs compared to other gas purification techniques
• Low maintenance