Influence of Coal-Biomass Fuel Composition on the Efficiency of its Conversion in Entrained-Flow Gasifiers

Donskoy, Igor

doi:10.3103/s0361521919020046

Cited by 9 publications

(3 citation statements)

References 39 publications

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“…To reduce incomplete combustion to an acceptable level, it is necessary to increase the air-fuel ratio, reducing the cold gas efficiency. Similar problems in choosing the parameters of the gasification process were considered earlier, for example, in [16], where an increase in temperature was required to ensure conditions for liquid ash removal.…”

Section: Fig 3 Dependence Of Incompletely Burned Carbon Yield (A) And...mentioning

confidence: 93%

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Simulation and Optimization of Entrained-Flow Air-Steam Gasification of Brown Coals

Donskoy

2022

Energy Systems Research

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A mathematical model was used to estimate the achievable efficiency of brown coals gasification in air-steam atmosphere. The optimal conditions for gasification were determined, the values of the cold gas efficiency and the produced gas composition were obtained. The dependence of the incompletely burned carbon yield on the conversion conditions was established. The results obtained can be used to evaluate the engineering and economic performance of thermal power plants with integrated gasification combined cycle (IGCC) fed by brown coals.

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Section: Fig 3 Dependence Of Incompletely Burned Carbon Yield (A) And...mentioning

confidence: 93%

“…A detailed description of the mathematical model and the results of its partial validation can be found in [14,15]. The model was used earlier in the computational optimization of the parameters of entrained-flow gasification of various fuels with various gasifying agents [16,17].…”

Section: Mathematical Model and Input Parametersmentioning

confidence: 99%

Simulation and Optimization of Entrained-Flow Air-Steam Gasification of Brown Coals

Donskoy

2022

Energy Systems Research

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“…Thermodynamic calculations show that during coal gasification, there can be regions of parameters with high CGE corresponding to very low temperatures of gasification products (which can be achieved only with a huge reaction zone) [27]. Therefore, when optimizing the parameters of the gasification reactor, it is necessary to raise the process temperature by increasing oxygen consumption [28]. The achievable efficiency of gasification processes using O 2 /CO 2 mixtures will be determined by the competition between temperature and concentration factors.…”

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confidence: 99%

A Numerical Study of the Influence of Process Parameters on the Efficiency of Staged Coal Gasification Using Mixtures of Oxygen and Carbon Dioxide

Donskoy

2021

Energy Systems Research

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The paper considers a staged conversion process of pulverized coal fuel in the MHPS-type gasifier, which uses mixtures of oxygen and carbon dioxide as a gasifying agent instead of air. Similar conversion processes can be applied in the process diagrams with the capture and disposal of carbon dioxide. The research tool is a reduced-order mathematical model of coal particles' conversion in a reacting gas flow. Replacement of nitrogen with carbon dioxide leads to significant changes in the gasification process characteristics: the average reaction temperature decreases, but this decrease is partially compensated by an increase in the concentration of gaseous reactants. Thus, the gasification process efficiency and the fuel conversion degree increase. Calculations make it possible to identify a range of parameters with the highest cold gas efficiency values. The influence of oxygen concentration is estimated, the dependence of the fuel conversion degree on the reaction temperature is analyzed.

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Plastic Waste Gasification

Mojaver,

Chitsaz,

Hasannejad

et al. 2023

Engineering Materials

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Influence of Coal-Biomass Fuel Composition on the Efficiency of its Conversion in Entrained-Flow Gasifiers

Cited by 9 publications

References 39 publications

Simulation and Optimization of Entrained-Flow Air-Steam Gasification of Brown Coals

Simulation and Optimization of Entrained-Flow Air-Steam Gasification of Brown Coals

A Numerical Study of the Influence of Process Parameters on the Efficiency of Staged Coal Gasification Using Mixtures of Oxygen and Carbon Dioxide

Plastic Waste Gasification

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