CO&lt;sub&gt;2&lt;/sub&gt; Gasification Reactivity of Chars Derived From Zhundong Coal

Y, Liu; Guan, Yao; Zhang, Kai

doi:10.20944/preprints201701.0099.v1

Cited by 1 publication

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“…Unlike to the results from non-isothermal measurements, the values of activation energy grow as the conversion degree of the gasification reaction increase. This phenomenon may be due to the increase of mineral matter content in the char as the reaction proceeds [18,19]. The obtained average value of Ea amounted to 138.1 kJ/mol and is slightly lower than this obtained by using the norder model.…”

Section: Isothermal Conditionsmentioning

confidence: 55%

Comparison of CO₂ gasification of coal in isothermal and non-isothermal conditions

2019

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The thermogravimetric method allows to carry out measurements both in isothermal conditions for a given temperature and in non-isothermal conditions at a set heating rate. The aim of the work was to compare the process of gasification of the same coal in an atmosphere of CO2 under isothermal and non-isothermal conditions. The measurements were carried out with the use of DynTHERM Thermogravimetric analyzer by Rubotherm. Char derived from Polish bituminous coal “Janina” was used as material for gasification. In case of the isothermal method the measurements were performed at three temperatures – 850 °C, 900 °C and 950 °C, while in case of the non-isothermal method for three heating rates, i.e. 3 K/min, 5 K/min and 10 K/min. Based on the results obtained, kinetics curves of conversion degree of the gasification process were developed and kinetic parameters of the gasification reaction i.e. reaction order, activation energy and pre-exponential factor were determined. The values of the kinetic parameters obtained from measurements performed in isothermal and non-isothermal conditions were compared.

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Section: Isothermal Conditionsmentioning

confidence: 55%

Comparison of CO₂ gasification of coal in isothermal and non-isothermal conditions

2019

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CO<sub>2</sub> Gasification Reactivity of Chars Derived From Zhundong Coal

Abstract: Coal gasification with carbon dioxide is a process for generating clean gaseous fuels and relieving greenhouse effect. Zhundong coal has high alkali and alkali earth metals

Cited by 1 publication

References 27 publications

Comparison of CO₂ gasification of coal in isothermal and non-isothermal conditions

Comparison of CO₂ gasification of coal in isothermal and non-isothermal conditions

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CO<sub>2</sub> Gasification Reactivity of Chars Derived From Zhundong Coal

Abstract: Coal gasification with carbon dioxide is a process for generating clean gaseous fuels and relieving greenhouse effect. Zhundong coal has high alkali and alkali earth metals

Cited by 1 publication

References 27 publications

Comparison of CO2 gasification of coal in isothermal and non-isothermal conditions

Comparison of CO2 gasification of coal in isothermal and non-isothermal conditions

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Comparison of CO₂ gasification of coal in isothermal and non-isothermal conditions

Comparison of CO₂ gasification of coal in isothermal and non-isothermal conditions