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International Journal of Energy for a Clean Environment
SJR: 0.195 SNIP: 0.435 CiteScore™: 0.74

ISSN 印刷: 2150-3621
ISSN オンライン: 2150-363X

International Journal of Energy for a Clean Environment

Formerly Known as Clean Air: International Journal on Energy for a Clean Environment

DOI: 10.1615/InterJEnerCleanEnv.2016019374
pages 145-163

DEVELOPMENT AND RESEARCH OF THE TECHNOLOGY OF ENRICHING LOW-GRADE SOLID FUELS WITH RECIRCULATING FLUE GASES FOR BOILER PLANTS

M. S. Boyarkin
Ulyanovsk State Technical University, Ulyanovsk, Russia
Vladislav N. Kovalnogov
Ulyanovsk State Technical University, Power Engineering & Fuels Dept., 32 Severnyy Venets, Ulyanovsk 432027 Russia
T. V. Karpukhina
Ulyanovsk State Technical University, Ulyanovsk, Russia
R. V. Fedorov
Ulyanovsk State Technical University, Severny Venets Street 32, 432027 Ulyanovsk, Russian Federation

要約

A set of problems related to the modeling, investigation, and development of energy efficient technologies of burning low-grade solid fuels for boilers of small distributed power-engineering plants is discussed. The technology of enriching low-grade solid fuel pellets (obtained by pressing the wastes of timber and wood processing and of agricultural production) with recirculating flue gases from a boiler plant is presented. The technology provides for final drying and heating pellets with simultaneous saturation of their capillary-porous space with a synthesis gas and with combustible components of a recirculating gas. The arrangements contribute to the most complete combustion of pellets and to the improvement of fuel efficiency and environmental friendliness of a boiler plant. A mathematical model, difference approximation of differential equations defining the kinetics of heat and humidity state and saturation of pellets, as well as the calculation algorithm and some results of the numerical investigation of the parameters of pellet state in the process of enrichment with recirculating flue gases are given and discussed.


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