On the problem of utilization of carbon dioxide in waste gases of power plant boilers when burning high-ash coals

B.I. Dikhanbaev; A.B. Dikhanbaev

doi:10.31643/2020/6445.34

Authors

B.I. Dikhanbaev «S.Seifullin Kazakh Agro Technical University», Nur-Sultan city, Kazakhstan.
A.B. Dikhanbaev Almaty University of Energy and Communications

DOI:

https://doi.org/10.31643/2020/6445.34

Keywords:

carbon dioxide, reactor inversion phase, zinc distillation, ash waste, germanium, gallium sublimates.

Abstract

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 " СО₂" into the atmosphere and return to the process a part of carbon in " СО₂". 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.

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Author Biographies

B.I. Dikhanbaev, «S.Seifullin Kazakh Agro Technical University», Nur-Sultan city, Kazakhstan.

Doctor of Technical Sciences, acting Associate Professor of the Department of Thermal Power Engineering, S. Suifullin Kazakh Agro Technical University, Nur-Sultan city, Kazakhstan.

A.B. Dikhanbaev, Almaty University of Energy and Communications

Senior Lecturer, Department of Heat Power Engineering, Almaty University of Energy and Communications, Almaty, Kazakhstan.

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