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Utilization of H2O and CO2 in Coal Particle Gasification with an Impact of Temperature and Particle Size
Energy & Fuels ( IF 5.2 ) Pub Date : 2020-09-11 , DOI: 10.1021/acs.energyfuels.0c02280
Tata Sutardi 1, 2 , Linwei Wang 3 , Nader Karimi 4 , Manosh C. Paul 1
Affiliation  

Aiming at improving the quality of syngas, the thermochemical behavior of syngas formation during a single coal particle gasification process is investigated based on a validated numerical model. Initially, simulations of coal gasification with steam (H2O) are conducted in a reactor, and the results show that the steam gasification generally favors the production of H2 and CH4. However, the switch of agent to CO2 into the gasifier influences the gasification products having H2, CO, and CH4. This then prompts the investigation of a mixture of H2O and CO2 agent in the reactor’s environment, and the results show a promising indicator in producing an overall better syngas quality. Moreover, the influence of the coal particle size and gasification temperature on the syngas production is studied. The results identify that the concentration of syngas products is higher when using smaller coal particles as the behavior of heterogeneous reactions of CO formation is affected by the particle size. Finally, high temperature promotes the chemical reactions of the gasification process, resulting in the improved production of syngas.

中文翻译:

H 2 O和CO 2在煤粉气化中的温度和粒度影响

为了提高合成气的质量,基于验证的数值模型,研究了单一煤颗粒气化过程中合成气形成的热化学行为。最初,在反应器中进行了带有蒸汽(H 2 O)的煤气化的模拟,结果表明,蒸汽气化通常有利于H 2和CH 4的产生。然而,将试剂从CO 2切换到气化炉中会影响具有H 2,CO和CH 4的气化产物。然后,这促使对H 2 O和CO 2的混合物进行研究在反应器环境中的合成气,结果表明该合成气在产生整体上更好的合成气质量方面有希望。此外,研究了煤粒度和气化温度对合成气生产的影响。结果表明,当使用较小的煤颗粒时,合成气产物的浓度较高,因为CO生成的异相反应的行为受粒度影响。最后,高温促进了气化过程的化学反应,从而改善了合成气的生产。
更新日期:2020-10-16
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