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<p>The combustion characteristics and gas emissions behavior of Low-calorie Indonesian coal (LC), Shaanxi coal (SC), and Datong coal (TC) were analyzed by a thermogravimetric-Fourier transform infrared spectrometer (TG-FTIR). The results showed that LC was the easiest coal to burn, followed by SC and TC. The main components of LC ash were alkali metals and alkaline earth metals (AAEMS), while SC and TC were clay minerals. The catalytic activity of LC ash was higher than that of SC and TC ash. FTIR results indicated that the main functional groups of three coals were CO<sub>2</sub>, CO, H<sub>2</sub>O, phenols, C = O, and C–H during combustion. The absorbance peaks of CO<sub>2</sub>, CO, SO<sub>2</sub>, and HCN against temperature showed single peak characteristics, while NO<sub>x</sub> was the bimodal peak. The total CO<sub>2</sub> emission of LC was 1.04 and 1.25 times that of SC and TC. Compared to LC and SC, TC had the highest total CO and SO<sub>2</sub> emissions. The total NO<sub>x</sub> emission of LC, SC, and TC was 0.21, 0.21, and 0.16. The study results provide the guidance for selection of coals and control the emission of gas products in the thermal power plant.</p>

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Combustion characteristics, functional groups, and gaseous emission behavior of different coals by TG-FTIR

  • 期刊论文

  • 发表日期：

    2025年2月11日

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  • Chunxiang Chen,
  • Shuo Qin,
  • Jundong Zhu,
  • Lihui He,
  • Bingjie Li,
  • Wenda Wang,
  • Zhulin He

摘要

The combustion characteristics and gas emissions behavior of Low-calorie Indonesian coal (LC), Shaanxi coal (SC), and Datong coal (TC) were analyzed by a thermogravimetric-Fourier transform infrared spectrometer (TG-FTIR). The results showed that LC was the easiest coal to burn, followed by SC and TC. The main components of LC ash were alkali metals and alkaline earth metals (AAEMS), while SC and TC were clay minerals. The catalytic activity of LC ash was higher than that of SC and TC ash. FTIR results indicated that the main functional groups of three coals were CO2, CO, H2O, phenols, C = O, and C–H during combustion. The absorbance peaks of CO2, CO, SO2, and HCN against temperature showed single peak characteristics, while NOx was the bimodal peak. The total CO2 emission of LC was 1.04 and 1.25 times that of SC and TC. Compared to LC and SC, TC had the highest total CO and SO2 emissions. The total NOx emission of LC, SC, and TC was 0.21, 0.21, and 0.16. The study results provide the guidance for selection of coals and control the emission of gas products in the thermal power plant.