Effect of Oxygen Flow Rate on Combustion Time and Temperature of Underground Coal Gasification

Zulatama, Apriansyah; Syarif, Aida; Yerizam, Muhammad

doi:10.53893/ijrvocas.v1i2.27

Cited by 5 publications

(5 citation statements)

References 24 publications

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“…The coal gasification process is carried out using the Underground Coal Gasification prototype with a length of 21 cm and a diameter of 13 cm as shown in Figures 1 and 2 [28].…”

Section: Methodsmentioning

confidence: 99%

Biocoal Characterization as an Environmentally Friendly Alternative Energy Innovation Composite Variations of Gasified Char with Coconut Shell Charcoal

Yopianita¹,

Syarif²,

Yerizam³

et al. 2022

IJFAC

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In accordance with the mandate of the Regulation of the Indonesian Minister of Energy and Mineral Resources for the use of cleaner coal through coal gasification projects, in the future the coal gasification industry will produce char as a by-product. This study aims to characterize coal gasification char using a prototype underground coal gasification (UCG) and the addition of coconut shell charcoal biomass as a raw material for making biobriquettes. By using coal as raw material from the Muara Tiga Besar Mine of PT Bukit Asam, five kinds of coal samples from different layers were obtained, which from the characterization results, both coal and char, did not have too significant deviations so that the research variables could be ignored. The results of the characterization of char from coal gasification results compared to the initial sample of coal showed an increase in calorific value, a decrease in sulfur content and a significant decrease in water content, so it can be concluded that char from coal gasification has good potential as a raw material for biobriquettes. By using char and coconut shell charcoal with the ratio of variations in the composition of char and coconut shell compositions is 100%:0%; 75%:25%; 50%:50%; 25%:75% and 0%:100% carried out the briquetting process. The results of the biobriquette characterization met the criteria of the Indonesian National Standard (SNI) 01-6235-2000 and Minister of Energy and Mineral Resources regulation No. 047 of 2006

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“…The coal gasification process is carried out using the Underground Coal Gasification prototype with a length of 21 cm and a diameter of 13 cm as shown in Figures 1 and 2 [28].…”

Section: Methodsmentioning

confidence: 99%

Biocoal Characterization as an Environmentally Friendly Alternative Energy Innovation Composite Variations of Gasified Char with Coconut Shell Charcoal

Yopianita¹,

Syarif²,

Yerizam³

et al. 2022

IJFAC

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“…The oxygen-coal interaction occurs rather slowly, through the diffusion process. At elevated temperatures that occur during gasification (1100-1300°C), the combustion rate is determined mainly by the oxygen diffusion intensity to the coal mass surface involved in the reactions [85]- [88]. If the rate of air movement on the combustion face surface is increased to tens of meters per second, the gasification process will occur with significant intensity.…”

Section: Temperature Increase In the Reaction Channelmentioning

confidence: 99%

Critical review of methods for intensifying the gas generation process in the reaction channel during underground coal gasification (UCG)

Lozynskyi

2023

Min. miner. depos.

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Purpose. The research purpose is to perform a critical analysis of methods for intensifying the gas generation process in the reaction channel to improve the efficiency and economic feasibility of coal seam gasification technology. The paper studies in detail the aspects of the chemical mechanism and technological parameters of this process in order to determine the possibilities for improving efficiency and productivity. Methods. The review study is based on an approach that includes an analysis of the underground coal gasification development, the study of chemical reactions in the reaction channel, the study of the influence of factors such as temperature, pressure, blast and producer gas composition, etc. The experimental research data systematization is based on in-depth analysis of scientific papers published in peer-reviewed journals. Findings. The systematized results of research into nine main methods for intensifying the gas generation process in the reaction channel during underground coal gasification are presented. The factors having the greatest influence on gas generation in the reaction channel have been identified. Originality. Research results indicate the possibility of improving the process of underground coal gasification. The revealed relationships between different factors contribute to a deeper understanding of the chemical and physical processes in the reaction channel. Practical implications. The results obtained can be used to optimize the underground coal gasification process, increase the productivity and quality of gas generation. The specified results can serve as a basis for further scientific research and innovative developments in obtaining an alternative type of fuel.

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“…Based on previous research Apriansyah at all [17]. Stated that the higher the mass flow of fuel, the shorter the combustion time, so this can increase the combustion efficiency in the combustion chamber, combustion efficiency can increase the efficiency of the turbine.…”

Section: Figure 4 Relationship Between Fuel Mass Flow and Turbine Eff...mentioning

confidence: 99%

Analysis of Parameters That Affect the Efficiency of Gas Power Plants

et al. 2023

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This study aims to analyze the parameters that actively affect the efficiency of gas power plants in order to optimize their performance. The method used in this study was an analytical approach based on the results of performance tests conducted in 2018, 2020, and 2022 on gas power plants in the sumatera selatan area, based on thermodynamic equations. Based on the results of the study, it is explained that there is a very significant relationship between the inlet air temperature of the compressor, the inlet fuel temperature, and the turbine exhaust temperature and active power to the efficiency of gas-fired power plants, where an increase in the inlet air temperature to the compressor will reduce the compressor efficiency, which is predicted using linear regression with an R2=0.82. An increase in the exhaust temperature and active power will significantly reduce the thermal cycle efficiency, which is predicted using linear regression with an average R2 =0.96. In addition, an increase in the fuel mass flow rate and inlet fuel temperature will increase the turbine efficiency, which is predicted using linear regression with an average R2 =0.97. Therefore, the relationships obtained in this study can be used as a reference for energy companies and governments in developing more efficient gas-fired power plants in the future

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Effect of Oxygen Flow Rate on Combustion Time and Temperature of Underground Coal Gasification

Cited by 5 publications

References 24 publications

Biocoal Characterization as an Environmentally Friendly Alternative Energy Innovation Composite Variations of Gasified Char with Coconut Shell Charcoal

Biocoal Characterization as an Environmentally Friendly Alternative Energy Innovation Composite Variations of Gasified Char with Coconut Shell Charcoal

Critical review of methods for intensifying the gas generation process in the reaction channel during underground coal gasification (UCG)

Analysis of Parameters That Affect the Efficiency of Gas Power Plants

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