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Registration Number

0221U101979, 0119U001846 , R & D reports

Title

Alternative fuels thermolysis for the Ukrainian thermal power plant project coal replacement investigation.

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Head

Beztsennyi Ihor V,

Registration Date

27-01-2021

Organization

Coal Energy Technology Institute оf the National Academy of Sciences of Ukraine

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Based on experiments of rapid heating of three types of solid biofuels, as well as salty and desalted coal, the dependences of the rate of release of volatile substances on particle size and temperature were obtained. It was found that for salty and desalted coal with increasing particle size, the maximum gas release rates decrease and shift to a later time, and the particle size of biomass has a much smaller effect on the rate of volatile release compared to coal. It is shown that the pyrolysis of salted coal occurs much more intensively than desalted, both in the characteristic time of the pyrolysis stage and in the values ​​of the maxima of the yield of H2, CO, CO2. It was found that the rate of release of volatiles from pine pellets is the lowest, and from pellets from sunflower stalks the highest. Based on the study of the kinetic characteristics of coke residues of pine pellets, wheat straw and sunflower husks, as well as salty and desalted coal, the kinetic constants of carbon interaction of these fuels with air oxygen were obtained. The obtained data were compared with anthracite and gas coal. It was found that the burning rate of coke ash residue of wheat straw pellets is the highest, pine pellets the lowest, and sunflower husk medium. The absence of influence of the water washing process on the combustion characteristics of desalted coal is proved. The average particle size of biomass in co-flame co-combustion in a mixture with gas coal has been calculated. The possibility of replacing gas coal with desalted coal has been calculated.

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Fateiev Аnton I

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2021-01-27