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Soot and char formation in the gasification of pig manure in a drop tube reactor

机译：在滴管反应器中猪粪气化中的烟灰和炭形成

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摘要

Biomass gasification offers a significant potential to close the loop of agriculture and many other activities that produce biomass residues. Pig manure, a residue produced in farms, has a huge pollutant potential due to its high production and chemical characteristics. It is necessary to take some control measures to decrease it, being pig manure gasification an interesting option. The present work studies the impact of the gasification temperature and atmosphere on the syngas composition (CO, H-2, CH4 and CO2) and formation of soot and char in the gasification of pig manure in a drop tube furnace. The temperature varied between 900 and 1200 degrees C, and the gasification atmospheres included mixtures of O-2/N-2, O-2/CO2/N-2 and O-2/H2O/N-2. The results revealed that i) the syngas H-2/CO ratio and its low heating value increase as the gasification temperature increases regardless of the gasification atmosphere; ii) the addition of H2O to the O-2/N-2 gasification atmosphere augments significantly the syngas H-2/CO ratio, but does not enhance its low heating value, while the addition of CO2 increases slightly the H-2/CO ratio, but significantly the heating value, iii) for the present reactor, the optimum operating conditions for the gasification of the pig manure in terms of syngas heating value and yield are a gasification temperature of 1200 degrees C and a gasification atmosphere composed of a mixture of O-2/CO2/N-2; and iv) soot yields increase as the temperature increases when gasification occurs in the O-2/N-2 and O-2/CO2/N-2 environments, remaining almost constant in the O-2/H2O/N-2 environment.
机译：生物质气化提供了缩小农业环路的重要潜力以及产生生物质残留的许多其他活动。猪粪，在农场生产的残留物，由于其高生产和化学特性，具有巨大的污染潜力。有必要采取一些控制措施来减少措施，是猪粪气化一个有趣的选择。本作研究研究气化温度和气氛对合成气组成（CO，H-2，CH4和CO2）的影响，以及在滴管炉中猪粪气化中的烟灰和焦炭的形成。温度在900和1200摄氏度之间变化，气化环境包括O-2 / N-2，O-2 / CO2 / N-2和O-2 / H 2 O / N-2的混合物。结果表明，I）由于气化气氛如何，I）随着气化温度的增加，合成气H-2 / CO比和其低热量值增加; ii）将H2O添加到O-2 / N-2气化气氛中显着提高了合成气H-2 / Co比，但不能提高其低加热值，而加入CO2略微增加H-2 / CO对于本反应器的比例但显着的加热值III），在合成气加热值方面，猪粪气化的最佳操作条件是1200℃的气化温度和由混合物组成的气氛气氛O-2 / CO2 / N-2的;当在O-2 / N-2和O-2 / CO2 / N-2环境中发生气化时，随着温度的增加，烟灰产生的烟灰产量增加，在O-2 / H 2 O / N-2环境中仍然几乎恒定。

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  • 来源
    《Fuel》 |2020年第1期|118738.1-118738.8|共8页
  • 作者

    Adanez-Rubio I; Ferreira R.; Rio T.; Alzueta M. U.; Costa M.;

  • 作者单位

    Univ Zaragoza Aragon Inst Engn Res I3A Dept Chem & Environm Engn Zaragoza 50018 Spain|Inst Carboquim ICB CSIC Dept Energy & Environm Miguel Luesma Castan 4 Zaragoza 50018 Spain;

    Univ Lisbon Inst Super Tecn Mech Engn Dept IDMEC Lisbon Portugal;

    Univ Lisbon Inst Super Tecn Mech Engn Dept IDMEC Lisbon Portugal;

    Univ Zaragoza Aragon Inst Engn Res I3A Dept Chem & Environm Engn Zaragoza 50018 Spain;

    Univ Lisbon Inst Super Tecn Mech Engn Dept IDMEC Lisbon Portugal;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Gasification; Pig manure; Temperature; Atmosphere; Syngas; Soot; Char;

    机译：气化;猪粪;温度;气氛;合成气;烟灰;炭;

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