Breath Of Fresh Air Blowing On The Faroe Islands: Alstom Uses HOK For Waste Gas Cleaning
Cologne, Denmark - Activated lignite (HOK) made by RWE Power AG will be used as adsorbent in fabric filters for waste gas cleaning in two public refuse incineration plants on the Faroe Islands, a part of Denmark. Thanks to this activated lignite that is distributed world-wide by RWE's subsidiary Rheinbraun Brennstoff GmbH (RBB), a breath of fresh air is now also blowing on the archipelago of isles situated in the North Atlantic between Greenland and Norway.
When it comes to equipping power stations and refuse incineration plants with waste gas cleaning technologies, a field where Wendt & S0rensen, RBB's Scandinavian partner for the distribution of HOK, and Alstom Danmark have been closely cooperating ever since the end of the 1990s, the activated lignite from the Rhineland is playing a growing role as adsorbent in fabric filters. In Denmark alone, Alstom is currently erecting as much as seven new plants using HOK for emission reduction.
"The two new ultra-modern plants that Alstom has built on the Faroe Islands," Peter Knudsen of Wendt & S0rensen explains "one in the capital Torshavn and the other in Leirvik in the north of the archipelago, have a combustion capacity of 2.5 tons of waste per hour in each case. The adsorption of mercury and dioxin only requires 800g of activated lignite an hour. The plants use the highest product quality offered by RBB: HOK super. This ensures not only a low-cost but also significant reduction in these emission-relevant pollutants. Process efficiency is more than 99 percent." Clean refuse incineration: activated lignite binds mercury and dioxin
The installed waste gas system works on the dry adsorption principle, with the flue gases from refuse incineration being first cooled to an optimum temperature for the process before lime and HOK are added. While the lime reacts with the acid waste gas components, heavy metals and dioxins are separated by the activated lignite.
The system's high performance--mercury and dioxin are practically reduced down to the detection limit--underscores the optimum interplay of the technology developed by Alstom and the HOK filter product supplied by RBB.
SOURCE: Rheinbraun Brennstoff GmbH