Integrated Process of Coke-Oven Gas Tri-Reforming and Coal Gasification to Methanol with High Carbon Utilization and Energy Efficiency

2015 ◽  
Vol 54 (9) ◽  
pp. 2519-2525 ◽  
Author(s):  
Yu Qian ◽  
Yi Man ◽  
Lijuan Peng ◽  
Huairong Zhou
Keyword(s):  
Energy Efficiency ◽  
Coal Gasification ◽  
Coke Oven ◽  
Integrated Process ◽  
Coke Oven Gas ◽  
High Carbon ◽  
Carbon Utilization

scholarly journals A Novel Evaluation Method of Hydrogen Production from Coal Based on AHP and GRA-TOPSIS

2021 ◽  
Vol 2021 ◽  
pp. 1-9
Author(s):  
Shuheng Zhong ◽  
Kangdi Yang ◽  
Yongji Wang
Keyword(s):  
Hydrogen Production ◽  
Production Technology ◽  
Coal Gasification ◽  
Evaluation Method ◽  
Evaluation Model ◽  
Coke Oven ◽  
Coal Industry ◽  
Technology Selection ◽  
Coke Oven Gas ◽  
Coal Enterprises

Coal is the cornerstone of China's energy. However, with the proposed goal of carbon peak and carbon-neutral in China, coal enterprises are in urgent need of exploring the path of transformation. Coal to hydrogen is an important way to achieve sustainable development of the coal industry. In this paper, four hydrogen production technologies, including coal gasification, coke oven gas, electrolytic water, and solar energy, are studied. A comprehensive evaluation model based on GRA-TOPSIS was constructed. The research shows that the coke oven gas is the most suitable hydrogen production technology for the transformation and development of coal enterprises. The evaluation model of hydrogen production technology in the transformation and development of coal enterprises constructed in this paper has a certain guiding effect on the technology selection of coal enterprises in the development of the hydrogen industry.

Optimization-based assessment framework for carbon utilization strategies: Energy production from coke oven gas

2019 ◽  
Vol 187 ◽  
pp. 1-14 ◽  
Author(s):  
Seulki Han ◽  
Sunghoon Kim ◽  
Yong Tae Kim ◽  
Geunjae Kwak ◽  
Jiyong Kim
Keyword(s):  
Energy Production ◽  
Coke Oven ◽  
Assessment Framework ◽  
Coke Oven Gas ◽  
Carbon Utilization

scholarly journals Gas Production Strategy of Underground Coal Gasification Based on Multiple Gas Sources

2014 ◽  
Vol 2014 ◽  
pp. 1-9 ◽  
Author(s):  
Duan Tianhong ◽  
Wang Zuotang ◽  
Zhou Limin ◽  
Li Dongdong
Keyword(s):  
Power Generation ◽  
Blast Furnace ◽  
Coal Gasification ◽  
Field Tests ◽  
Coke Oven ◽  
Gas Production ◽  
Underground Coal Gasification ◽  
Coke Oven Gas ◽  
Blast Furnace Gas ◽  
Converter Gas

To lower stability requirement of gas production in UCG (underground coal gasification), create better space and opportunities of development for UCG, an emerging sunrise industry, in its initial stage, and reduce the emission of blast furnace gas, converter gas, and coke oven gas, this paper, for the first time, puts forward a new mode of utilization of multiple gas sources mainly including ground gasifier gas, UCG gas, blast furnace gas, converter gas, and coke oven gas and the new mode was demonstrated by field tests. According to the field tests, the existing power generation technology can fully adapt to situation of high hydrogen, low calorific value, and gas output fluctuation in the gas production in UCG in multiple-gas-sources power generation; there are large fluctuations and air can serve as a gasifying agent; the gas production of UCG in the mode of both power and methanol based on multiple gas sources has a strict requirement for stability. It was demonstrated by the field tests that the fluctuations in gas production in UCG can be well monitored through a quality control chart method.

scholarly journals Changes in properties of tar obtained during underground coal gasification process

2021 ◽  
Author(s):  
Marian Wiatowski ◽  
Roksana Muzyka ◽  
Krzysztof Kapusta ◽  
Maciej Chrubasik
Keyword(s):  
Coal Gasification ◽  
Coal Tar ◽  
Liquid Product ◽  
Coke Oven ◽  
Underground Coal Gasification ◽  
Gasification Process ◽  
Dominant Component ◽  
Process Gas ◽  
High Volatility ◽  
Product Separator

AbstractIn this study, the composition of tars collected during a six-day underground coal gasification (UCG) test at the experimental mine ‘Barbara’ in Poland in 2013 was examined. During the test, tar samples were taken every day from the liquid product separator and analysed by the methods used for testing properties of typical coke oven (coal) tar. The obtained results were compared with each other and with the data for coal tar. As gasification progressed, a decreasing trend in the water content and an increasing trend in the ash content were observed. The tars tested were characterized by large changes in the residue after coking and content of parts insoluble in toluene and by smaller fluctuations in the content of parts insoluble in quinoline. All tested samples were characterized by very high distillation losses, while for samples starting from the third day of gasification, a clear decrease in losses was visible. A chromatographic analysis showed that there were no major differences in composition between the tested tars and that none of the tar had a dominant component such as naphthalene in coal tar. The content of polycyclic aromatic hydrocarbons (PAHs) in UCG tars is several times lower than that in coal tar. No light monoaromatic hydrocarbons (benzene, toluene, ethylbenzene and xylenes—BTEX) were found in the analysed tars, which results from the fact that these compounds, due to their high volatility, did not separate from the process gas in the liquid product separator.

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