Recent progress in the gasification reaction behavior of coal char under unconventional combustion modes

Z Zhang, Z Zhao, L Zhang - Applied Thermal Engineering, 2023 - Elsevier
Compared with conventional air combustion, the combustion mode and medium of
unconventional combustion technologies (oxy-fuel combustion, moderate or intense low …

CFD modeling on char surface reaction behavior of pulverized coal MILD-oxy combustion: Effects of oxygen and steam

Z Zhang, B Lu, Z Zhao, L Zhang, Y Chen, C Luo… - Fuel Processing …, 2020 - Elsevier
Gasification reaction is not supposed to be omitted for pulverized coal MILD-oxy combustion
regime, especially for the wet recycle (steam up to 40 vol%). This paper numerically …

Effect of H2O/CO2 mixture on heat transfer characteristics of pulverized coal MILD-oxy combustion

Z Zhang, X Li, L Zhang, C Luo, B Lu, Y Xu, J Liu… - Fuel Processing …, 2019 - Elsevier
The integration of moderate or intense low-oxygen dilution (MILD) combustion technology
with oxy-fuel combustion, that is, MILD-oxy combustion, has a favorable compatibility to …

Experimental and modeling study of pinewood char gasification with CO2

I Sircar, A Sane, W Wang, JP Gore - Fuel, 2014 - Elsevier
The objective of this study is to measure apparent rate parameters for pinewood char
gasification with CO 2 using large particles with relevance to practical gasifiers. The novel …

Kinetic modeling of biomass gasification and tar formation in a fluidized bed gasifier using equivalent reactor network (ERN)

B Das, A Bhattacharya, A Datta - Fuel, 2020 - Elsevier
A chemical kinetic based simulation model of a bubbling fluidized bed biomass gasifier has
been developed using an Equivalent Reactor Network (ERN). The pyrolysis zone is …

Computational study on the effect of gasification reaction on pulverized coal MILD combustion diluted by N2 and CO2

Z Zhang, B Lu, L Zhang, X Li, C Luo, Y Xu… - Applied Thermal …, 2019 - Elsevier
The behavior of pulverized coal gasification reaction under MILD combustion regime will be
significant, and then it affects pulverized coal combustion. This work performs a …

Modeling of an oxy-coal flame under a steam-rich atmosphere

Z Mao, L Zhang, X Zhu, C Pan, B Yi, C Zheng - Applied Energy, 2016 - Elsevier
Steam is the main byproduct of flue gas recirculation in the oxy-coal combustion system.
Coal particles are commonly surrounded and burned under the steam-rich atmosphere. In …

Mathematical modeling of coal gasification processes in a well-stirred reactor: effects of devolatilization and moisture content

J Xu, L Qiao - Energy & Fuels, 2012 - ACS Publications
The devolatilization process and the moisture content in coal and biomass play an important
role on the gasification performance of these fuels. To theoretically understand the complex …

A comprehensive model for char particle conversion in environments containing O2 and CO2

NEL Haugen, RE Mitchell, MB Tilghman - Combustion and Flame, 2015 - Elsevier
In this work, conversion of char is studied in a simulation code that includes a simplified
heterogeneous adsorption–desorption reaction mechanism for char chemical reactivity and …

The Dynamic Nature of Graphene Active Sites in the H2O Gasification process: A ReaxFF and DFT Study

Z Liang, K Li, F Guo, H Zhang, Y Bu, J Zhang - Journal of Molecular …, 2023 - Springer
Context A steam-rich environment is a more promising application scenario for future coal-
fired processes, while active sites are the key factor that determines the reactivity of …