Reduction of carbon dioxide emission by varying coal composition: A techno-economic optimization study
Despite the decarbonization trend, full elimination of using fossils will not be possible for a long time. For example, for territories with low-temperature climates and poorly developed fuel infrastructure, the only way to sustain is using coal for power and heat production. In this regard, the main goal is rather to find ways to reduce carbon dioxide emission than to replace fossil power plants with renewable ones. In this paper, we investigate the influence of coal composition on Rankine power cycle characteristics and look for limits of carbon dioxide specific emission reduction through the choice of fuel mark. To this end, we conduct optimization studies of coal power plants with advanced steam parameters and compare the results obtained with 30 different coals. It is shown that the thermodynamic and economic criteria form two families of optima. Specific emissions of carbon dioxide vary from 700 up to 1500 kg/MWh for the range of carbon content from 30 to 80%. We analyze differences in steam parameters and the cost of produced energy under several levels of fuel costs. The results allow us to estimate the cost of carbon dioxide reduction by enhancing steam parameters. © 2026 Elsevier Ltd. All rights are reserved, including those for text and data mining, AI training, and similar technologies.
Библиографическая ссылка
Donskoi I.G., Epishkin N.O. Reduction of carbon dioxide emission by varying coal composition: A techno-economic optimization study // Energy. Vol.356. No.141276. 2026. DOI: 10.1016/j.energy.2026.141276
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