BioDeNOx demonstrated in Grand Haven
19 Oct 2001
Grand Haven Board of Light & Power based in Grand Haven, MI, USA and Corus Consulting based in Ijmuiden, The Netherlands have signed an agreement to demonstrate a new flue gas denitrification technology at unit 3 of the J.B. Sims generating station in Grand Haven, Michigan.
In general, the total savings on investment for a full scale industrial BioDeNOx process are expected to be at least 80% compared to the SCR process and in some cases even 90%. Current cost levels for the 70 MW coal-fired power plant at J.B. Sims generating station are well below 1,000 USD per ton removed NOx.
The so called Biotechnological Denitrification technology (BioDeNOx) is a patented process that will be incorporated in an existing Flue Gas Desulphurisation (FGD) scrubber in order to create simultaneous removal of SO2 and NOx from the flue gases.The captured nitrogen compounds are converted into harmless Nitrogen gas (N2) by using a bio-catalyst that will be added to the scrubber liquid.
The BioDeNOx technology is based on the proven addition of chelates to enhance removal of the insoluble nitrogen oxide (NO) gas. The addition of a bio-catalyst leads to conversion of NOx and full regeneration of chelate so that it can be used again in the scrubber recirculation. With this technology high removal efficiencies of NOx can be achieved. The removal level of SO2 will not be effected and in most cases even improve.
The implementation of the BioDeNOx technology will require about a 3 months preparation time so that the actual demonstration can commence by mid December this year. The technology will continue to be demonstrated until April of 2002.
Corus Consulting has successfully operated a pilot plant facility for a 9 months period during which the combined SO2 and NOx removal process was demonstrated.
