Investigation of coal particle gasification processes with application leading to underground coal gasification

Sutardi, Tata; Paul, Manosh C.; Karimi, Nader

doi:10.1016/j.fuel.2018.10.058

Cited by 41 publications

(53 citation statements)

References 33 publications

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“…Coal volatile matter was not considered in this experiment, because the focus was on the char reactions as the model simulation showed its important effect on the gasification reactions [7]. Table 2 The chemical and physical properties of charcoal For the investigation purposes, the charcoal particle is classified into three different sizes based on the screening dimension, and they are named as Coal A, B, and C. The ID of A, B, and C have been identified for the coal particles that could pass the screening with a size of 1 × 1 mm 2 ; 2 × 2 mm 2 ; and 4 × 4 mm 2 , respectively.…”

Section: Coal Particle Properties and Preparationmentioning

confidence: 99%

“…Therefore, further study is needed [20,21], and the coal particle model approach was taken as a model development [7,[22][23][24][25]. The method considered coal as a multi-phase-component of solid-gas [26,27], and with this approach the whole reactions of gasification mechanisms were presented in the simulation.…”

Section: Introductionmentioning

confidence: 99%

“…Earlier, an initial development of a coal particle gasification model has been performed through computational simulations [7,23,[28][29][30][31]. The result has clarified the behaviour of thermochemical process of gasification reaction mechanisms.…”

Section: Introductionmentioning

confidence: 99%

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Investigation of thermochemical process of coal particle packed bed reactions for the development of UCG

Sutardi

Wang

Karimi

et al. 2020

Preprint

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In this study, a packed bed reactor is developed to investigate the gasification process of coal particles. The effects of coal particle size and heater temperature of reactor are examined to identify the thermochemical processes through the packed bed. Three different coal samples with varying size, named as A, B, and C, are used, and the experimental results show that the coal packed bed with smaller size has higher temperature, reaching 624oC, 582oC, and 569oC for coal A, B, and C respectively. In the case of CO formation, the smaller particle size has greater products in the unit of mole fraction over the area of generation. However, the variation in the porosity of the coal packed bed due to different particle sizes affects the reactions through the oxygen access. Consequently, the CO formation is least from the coal packed bed formed by the smallest particle size A. A second test with the temperature variations shows that the higher heater temperature promotes the chemical reactions, resulting in the increased gas products. The findings indicate the important role of coal seam porosity in UCG (underground coal gasification) application, as well as temperature to promote the syngas productions.

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Section: Coal Particle Properties and Preparationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Investigation of thermochemical process of coal particle packed bed reactions for the development of UCG

Sutardi

Wang

Karimi

et al. 2020

Preprint

Self Cite

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“…This study focusses on the investigation of thermochemical behaviour of coal reactions for understanding the processes to occur in a UCG application. The study began with the aim of improving the reaction mechanisms of coal gasi cation through a model simulation conducted recently by the authors [7]. Based on the literature, three different models for the development of UCG were presentedpacked bed model, channel model, and coal slab model [4,8].…”

Section: Introductionmentioning

confidence: 99%

Investigation of thermochemical process of coal particle packed bed reactions for the development of UCG

Sutardi

Wang

Karimi

et al. 2020

Preprint

Self Cite

View full text Add to dashboard Cite

In this study, a packed bed reactor is developed to investigate the gasification process of coal particles. The effects of coal particle size and heater temperature of reactor are examined to identify the thermochemical processes through the packed bed. Three different coal samples with varying size, named as A, B, and C, are used, and the experimental results show that the packed bed with smaller coal size has higher temperature, reaching 624oC, 582oC, and 569oC for coal A, B, and C respectively. In the case of CO formation, the smaller particle size has greater products in the unit of mole fraction over the area of generation. However, the variation in the porosity of the packed bed due to different coal particle sizes affects the reactions through the oxygen access. Consequently, the CO formation is least from the coal packed bed formed by the smallest particle size A. A second test with the temperature variations shows that the higher heater temperature promotes the chemical reactions, resulting in the increased gas products. The findings indicate the important role of coal seam porosity in UCG (underground coal gasification) application, as well as temperature to promote the syngas productions.

show abstract

“…Underground coal gasification 890Underground coal gasification[86,[90][91][92] is a technology that transforms underground coal into 891 combustible gas in situ through thermochemical reactions. This represents a fundamental change to 892 traditional coal mining methods and is integral to the technique of green mining.…”

mentioning

confidence: 99%

Sustainable Development of Resources and the Environment: Mining-Induced Eco-Geological Environmental Damage and Mitigation Measures—A Case Study in the Henan Coal Mining Area, China

Guo

Tan

et al. 2019

Sustainability

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Coal is an important resource that has supported China’s economic development. This situation is expected to continue in the immediate future. However, coal mining has also led to serious environmental disasters in some mining areas. Henan Province is one of the 14 large-scale coal bases that are planned by the Chinese state. It is located in the transitional zone between the second and third terrain ladders of China and spans two tectonic units. The geological features and ecological environmental characteristics display wide spatial variations throughout this district, which is an ecologically fragile region of stepped transition type. However, large-scale, extremely intense coal mining activities will inevitably lead to further deterioration of the already fragile ecological and geological (eco-geological) environment, which makes recovery increasingly difficult. Based on the condition of the eco-geological environment and the coal mining industry in the Henan mining area, the mechanisms by which mining-induced damage can occur were analyzed. The characteristics and status of the destruction of ground structures, land resources, water resources, the atmospheric environment, and natural ecology are discussed in this paper. Appropriate mitigation measures are proposed based on the findings. This mainly includes: management practices to prevent and mitigate damage throughout all stages of mining; adoption of mining techniques that will control damage at the source; and, the adoption of appropriate post-mining recovery technologies. The analysis of mining-induced eco-geological environmental damage and mitigation measures is of importance for the prevention of eco-geological disasters, and the promotion of efficient and environmentally sustainable exploitation of coal resources.

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Investigation of coal particle gasification processes with application leading to underground coal gasification

Cited by 41 publications

References 33 publications

Investigation of thermochemical process of coal particle packed bed reactions for the development of UCG

Investigation of thermochemical process of coal particle packed bed reactions for the development of UCG

Investigation of thermochemical process of coal particle packed bed reactions for the development of UCG

Sustainable Development of Resources and the Environment: Mining-Induced Eco-Geological Environmental Damage and Mitigation Measures—A Case Study in the Henan Coal Mining Area, China

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