Kinetic and thermodynamic evolution driven by oxygen gradients in underground coal gasification

Fuel 2026 Open access

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Authors: Maifan Dong, Jiaxuan Sun, Botao Qin, Lele Feng, Saeideh Babaee, Jie Dong, Yanzhe Jia, Tengfei Li, Jian Shen, Huaizhan Li
DOI: 10.1016/j.fuel.2026.139693
Cited by: 3
References: 49

Abstract

Underground coal gasification (UCG) is essentially the multi-field coupled thermochemical conversion process. One of the most significant characteristics during the UCG process is the formation of the pronounced oxygen concentration gradient along the gasification channel, which leads to significant zoning characteristics in the underground reaction zone. In this work, the coal reaction behavior driven by oxygen concentration gradient from 0% to 100% (10 levels) is focused. Meanwhile, the numerical model combining reaction kinetics and empirical component distribution is used to compare the gas production performance under different oxygen concentrations. Under the low oxygen concentrations (

Fields of Study & Subjects

Mining and Gasification Technologies Iron and Steelmaking Processes Diverse Industrial Engineering Technologies

Publication details

Journal / source
Fuel
Publisher
Elsevier BV
Volume
427
Pages
139693–139693
Publication date
4 May 2026
Language
EN