On the issue of waste-free combustion of ekibastuz coal and utilization of carbon dioxide in waste gases

Bezodpadowe spalania węgla ekibastuz i utylizacja dwutlenku węgla w gazach odlotowych
Dikhanbaev B.I. Rusowicz A. Dikhanbaev A.B. Sultan I.
2021 Kaprint

Rynek Energii
2021 #151 Issue 6 71 - 76 pp.

The production activity of mankind using high-ash fossil fuels for electricity generation is steadily increasing ash waste and carbon dioxide emissions into the environment. The article proposes a variant of wasteless combustion of Ekibastuz coal in a melting reactor installed under the boiler; it is envisaged to obtain, in addition to steam of energy parameters, a melt suitable for the production of building materials, sublimates of zinc, gallium and germanium, to reduce emissions of CO₂ into the atmosphere and return to the process a part of carbon in CO₂. An energy-saving thermal diagram of a power plant boiler has been developed on the basis of the proposed technology for the reduction of СО₂, Н₂О of reactor waste gases with zinc vapor to СО, Н₂. The resulting excessive hydrogen will be used to displace elemental carbon from CO. The spent reagent, zinc oxide, after recovering into zinc will be used again in the process. In case of implementation, CO₂ emissions into the atmosphere will be cut up to 50%, the expected payback period of the proposed system will be 1.0-1.5 years.

Ash waste , Carbon dioxide , Gallium sublimates , Germanium , Reactor inversion phase , Zinc distillation

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Department of Thermal Power Engineering, S. Seifullin Kazakh Agro Technical University, Nur-Sultan, Kazakhstan
Warsaw University of Technology, Power and Aeronautical Engineering Faculty, Institute of Heat Engineering, Poland
Department of Heat Power Engineering, University of Energy and Communications, Almaty, Kazakhstan
Energy Department, S. Seifullin Kazakh Agrotechnical University, Astana, Kazakhstan

Department of Thermal Power Engineering
Warsaw University of Technology
Department of Heat Power Engineering
Energy Department

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