Thermodynamic models of extreme intermediate states and their applications in power engineering

Kaganovich, Boris M.; Filippov, Sergey; Keiko, A. V.; Shamanskii, V. A.

doi:10.1134/s0040601511020054

Cited by 6 publications

(2 citation statements)

References 3 publications

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“…This approach is applicable for hightemperature processes in which the rate of gas-phase processes is quite high compared to the rate of heterophase ones. In this case, the task of calculating the gas composition is as follows [29]:…”

Section: Mathematical Modelmentioning

confidence: 99%

Mathematical modelling of the oxyfuel gasification of pulverized coal fuel

Donskoy

2020

E3S Web Conf.

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In this work, we studied the efficiency of the coal gasification process under oxyfuel conditions. Using mathematical modelling one-dimensional stationary statement, the optimal parameters of coal processing were determined, air and oxyfuel conditions are compared. The calculated dependences of the characteristics of the gasification process on the stoichiometric ratio at different initial temperatures are constructed. The optimal values of oxygen stoichiometric ratio and the maximum values of cold gas efficiency in the selected range of parameters are determined. The contribution of the thermophysical and reactive properties of the gasification agent to the change in the cold gas efficiency is estimated.

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Section: Mathematical Modelmentioning

confidence: 99%

Mathematical modelling of the oxyfuel gasification of pulverized coal fuel

Donskoy

2020

E3S Web Conf.

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“…For the gas phase, the equation of state of an ideal gas is adopted, and condensed substances form ideal one-component phases. Then, the problem of calculating the chemical state of the gas phase takes the following form [32]:…”

Section: Thermochemical Equilibrium Model and Initial Datamentioning

confidence: 99%

Influence of the Composition of Solid Fuel on the Equilibrium Characteristics of a Gasification Process in the Mixtures of Oxygen and Carbon Dioxide

Donskoi

2021

Solid Fuel Chem.

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The gasification of solid fuels of different elemental compositions in O2/N2 and O2/CO2 mixtures was studied using equilibrium thermodynamic modeling. The dependences of process characteristics (temperature and the yield of carbon residue) on the composition of gasification agent and the stoichiometric ratio were calculated. The addition of carbon dioxide, on the one hand, promoted the conversion of carbon due to an increase in the concentration of gasifying agents and, on the other hand, decreased the process temperature due to an increase in heat capacity and an endothermic effect of the gasification reaction. The efficiency of using O2/CO2 mixtures for the gasification of fuels increased with the carbon content. The highest chemical efficiency of coke and coal gasification was achieved at an initial CO2 concentration of about 40–60 vol %.

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