Formation of Nitrogen-Containing Organic Aerosol during Combustion of High-Sulfur-Content Coal,Energy & Fuels

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Formation of Nitrogen-Containing Organic Aerosol during Combustion of High-Sulfur-Content Coal
Energy & Fuels ( IF 5.2 ) Pub Date : 2017-11-15 00:00:00 , DOI: 10.1021/acs.energyfuels.7b02273
Xiaofei Wang ₁ , Hanliu Wang ₁ , He Jing ₁ , Wei-Ning Wang ₁ , Weidong Cui ₁ , Brent J. Williams ₁ , Pratim Biswas ₁

Affiliation

Carbonaceous aerosols, including organic carbon aerosols and black carbon aerosols, are produced by the combustion of pulverized coal even under fuel-lean conditions. These carbonaceous aerosols can be particularly hazardous to human health. In this study, the chemical compositions and formation pathways of organic aerosols emitted during the combustion of high-sulfur-content coals were investigated. It was found that nitrogen-containing organic matter contains a significant proportion of organic aerosol mass from the combustion of high-sulfur-content coals, which is not the case for organic aerosols generated during the combustion of low-sulfur-content coals. The formation of organic aerosols was significantly enhanced when higher-sulfur-content coal was burned. A strong correlation between organic aerosol mass and the sulfate concentration was observed. It is proposed that acidic sulfate particles absorb the nitrogen-containing organic volatiles produced by coal pyrolysis onto the particle phase through acid–base neutralization reactions.

中文翻译：

高硫煤燃烧过程中含氮有机气溶胶的形成

碳质气溶胶，包括有机碳气溶胶和黑碳气溶胶，即使在燃料贫乏的条件下，也会通过粉煤的燃烧产生。这些碳质气溶胶对人体健康尤其有害。在这项研究中，研究了高硫煤燃烧过程中排放的有机气溶胶的化学组成和形成途径。已经发现，含氮有机物含有大量比例的高硫含量煤燃烧产生的有机气溶胶，而低硫含量煤燃烧过程中产生的有机气溶胶则不是这种情况。当燃烧高硫煤时，有机气溶胶的形成显着增强。观察到有机气溶胶质量和硫酸盐浓度之间有很强的相关性。建议酸性硫酸盐颗粒通过酸碱中和反应吸收煤热解产生的含氮有机挥发物到颗粒相上。

更新日期：2017-11-16

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