Estimation of the cavity volume in the gasification zone for underground coal gasification under different oxygen flow conditions

F Su, X He, M Dai, J Yang, A Hamanaka, Y Yu, W Li… - Energy, 2023 - Elsevier
In this study, the impact of oxygen flow rate on the cavity of the gasification zone was
analyzed through two experiments using a coaxial hole model. The oxygen flow rate was …

Evolution, status, and trends of exergy research: a systematic analysis during 1997–2020

P Zhang, Q Jin - Environmental Science and Pollution Research, 2022 - Springer
Exergy analysis, as a core evaluation tool to improve energy efficiency and system
sustainability, has been applied in various fields over the last decades, leading to a …

Coal gasification integration with solid oxide fuel cell and chemical looping combustion for high-efficiency power generation with inherent CO2 capture

S Chen, N Lior, W Xiang - Applied Energy, 2015 - Elsevier
Since solid oxide fuel cells (SOFC) produce electricity with high energy conversion
efficiency, and chemical looping combustion (CLC) is a process for fuel conversion with …

Techno-economic assessment of hydrogen production from underground coal gasification (UCG) in Western Canada with carbon capture and sequestration (CCS) for …

B Olateju, A Kumar - Applied Energy, 2013 - Elsevier
This paper examines the techno-economic viability of hydrogen production from
underground coal gasification (UCG) in Western Canada, for the servicing of the oil sands …

Monitoring of coal fracturing in underground coal gasification by acoustic emission techniques

F Su, K Itakura, G Deguchi, K Ohga - Applied Energy, 2017 - Elsevier
During the underground coal gasification (UCG) process, fracturing and cracks occur inside
the gasification zone and surrounding rocks as the underground coal cavity evolves …

Numerical investigation on performance of coal gasification under various injection patterns in an entrained flow gasifier

CJ Chen, CI Hung, WH Chen - Applied energy, 2012 - Elsevier
Gasification plays an important role in the development of clean coal technology. To seek
appropriate operations for synthesis gas (syngas) formation, the present study develops a …

Effect of oxygen and steam on gasification and power generation in industrial tests of underground coal gasification

W Huang, Z Wang, T Duan, L Xin - Fuel, 2021 - Elsevier
To optimize the gasification process and improve the underground coal gasification (UCG)
technology for power generation, a pilot project of UCG integrated with the power generation …

Development of a novel 2-stage entrained flow coal dry powder gasifier

S Xu, Y Ren, B Wang, Y Xu, L Chen, X Wang, T Xiao - Applied energy, 2014 - Elsevier
Coal-fired gasifiers are the key technology for clean power generation and coal chemical
process. This paper presents a 2-stage entrained flow dry powder gasifier in which coal is …

Energy analysis on Coalbed Methane (CBM) coupled power systems

N Mallick, V Prabu - Journal of CO2 Utilization, 2017 - Elsevier
Abstract Coalbed Methane (CBM) contains 97% of CH 4 and very less amount of sulphur.
Methane is a very high calorific value (≅ 55.7 MJ/kg) gas as well as a greenhouse gas …

Some influences of underground coal gasification on the environment

K Kostúr, M Laciak, M Durdan - Sustainability, 2018 - mdpi.com
Increasing energy costs and energy demand have renewed global interest in clean coal
technologies. Underground Coal Gasification (UCG) is an industrial process that converts …