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DEVELOPMENT AND RESEARCH OF TECHNOLOGY OF ENRICHMENT OF LOW-GRADE SOLID FUELS BY RECIRCULATED EXHAUST GASES FOR BOILER PLANTS
doi:10.23877/MS.TS.25.008
Boyarkin M.S., Kovalnogov V.N., Karpukhina T.V., Fedorov R.V.
Ульяновский государственный технический университет, Ulyanovsk, Russia
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Citation:
Boyarkin, M.S., Kovalnogov, V.N., Karpukhina, T.V. and Fedorov, R.V., (2016) Development and research of technology of enrichment of low-grade solid fuels by recirculated exhaust gases for boiler plants, Modern Science: Researches, Ideas, Results, Technologies, Iss. #1(17), PP. 78 - 88. doi: 10.23877/MS.TS.25.008.
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Keywords:recirculation; boiler; modeling; low-grade fuel; exhaust gases; pellets |
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Abstracts:
The complex of issues related to the modeling, the research and development of energy efficient technologies of combustion of low-grade solid fuels for boilers of small distributed energy plants is discussed. A technology of enrichment of low-grade solid fuel pellets (obtained by pressing of waste of timber, wood processing, and agricultural production) by recirculated flue gas from boiler plant is presented. The technology provides for final drying and heating the pellets with simultaneous saturation of the capillary-porous space by the synthesis gas and the combustible components of the recycle gas. Those arrangements contribute the most complete combustion of pellets and improve the fuel efficiency and environmental friendliness of the boiler plant.
The mathematical model, a difference approximation of differential equations defining the kinetics of heat and humidity conditions and saturation of the pellets, as well as the calculation algorithm and some numerical results of parameters of pellete condition in the process of enrichment of recirculated exhaust gases are given and discussed. |
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References:
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