POSITIVEMgOFGD (LIFE15 ENV/GR/000338)

recyclingathomeNew desulfurization technology for SOx reduction with positive net environmental impact based on MgO reagents,
2016-2019
http://betterlife-withmgo.eu

ENVIRECO Consulting did not participate in the consortium, but undertook part of the dissemination activities.

The LIFEPOSITIVEMgOFGD project demonstrates that a new dry technology based on magnesium oxide reagents can be an effective desulphurisation solution for magnesite processing, especially for facilities located in areas with limited water resources. The project tests at full scale a technique to treat the combustion gases of a magnesite calcination rotary kiln located at the beneficiary's site in northern Greece, an area of limited water availability. The technique generates waste in the form of a mixture of magnesium sulphate and magnesium oxide powders, which will be used to produce fertilisers and construction materials.

Expected results: The LIFEPOSITIVEMgOFGD project will prove the efficiency of a new dry flue gas desulphurisation technology, with the following quantitative results:

  • A total reduction in sulphur oxides of 1 000-3 500 miligrammes per normal cubic metre (Nm3), to reach a SOx level below 1 500 mg/Nm3;
  • A recovery rate of at least 75% of magnesium oxide sub-product from old mining waste;
  • A recovery rate of at least 90% of the generated solid waste, which will be used for the production of fertilisers and construction materials;
  • A reduction of at least 40% in energy consumption, compared to wet technologies;
  • A reduction of at least 80% of the use of water, as compared to wet flue gas desulphurisation;
  • Operation of a full-scale pilot installation, which will allow technical specifications and operating parameters for optimum performance to be determined, so that the technique can be considered as a best available technique when the CLM BREF is revised;
  • A demonstration that the dry technology can be replicated in other plants because of the reduced investment requirements and operating costs. The technique also permits easy retrofitting of current installations, and produces a reusable by-product;
  • A life-cycle analysis to demonstrate the environmental and socio-economic benefits of the new technology; and
  • Promotion of the project's results to the magnesia sector and to other energy-intensive sectors that rely on fuels that contain sulphur.