Feedstock Dependence of Emissions from a Reverse-Downdraft Gasifier Cookstove,Energy for Sustainable Development

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Feedstock Dependence of Emissions from a Reverse-Downdraft Gasifier Cookstove
Energy for Sustainable Development ( IF 4.4 ) Pub Date : 2020-06-01 , DOI: 10.1016/j.esd.2020.02.008
Thomas Kirch , Paul R. Medwell , Cristian H. Birzer , Philip J. van Eyk

The present study investigates the combustion process of the producer gas from a gasifier cookstove, for four solid biomass fuels: wood pellets (WP), wheat straw (WS), sheep manure (SM) and cow manure (CM). It was found that more primary air and/or a deeper fuel bed reduces tars in the producer gas and increases the combustion efficiency, especially from low-ash-containing WP. At higher air supply rates, indications of a strong influence from the fuel ash content on the emissions were found. Although more combustible gases and fewer tars are produced in the conversion process, a substantial increase in particulate matter (PM) emissions is noted. At low air supply rates, the emissions of particulates with an aerodynamic diameter ≤2.5 μm (PM₂.₅) released from the combustion process are in the range of 6–30 mg⋅MJᵣₑₗₑₐₛₑd⁻¹ (WP

中文翻译：

反向下吸式气化炉炉灶排放物的原料依赖性

本研究调查了气化炉炉灶产生的气体的燃烧过程，用于四种固体生物质燃料：木屑颗粒 (WP)、小麦秸秆 (WS)、羊粪 (SM) 和牛粪 (CM)。发现更多的一次空气和/或更深的燃料床减少了发生炉煤气中的焦油并提高了燃烧效率，尤其是来自低灰分可湿性粉剂的燃烧效率。在较高的空气供应率下，发现燃料灰分含量对排放有强烈影响的迹象。尽管在转化过程中会产生更多的可燃气体和更少的焦油，但注意到颗粒物 (PM) 排放量大幅增加。在低供气率下，燃烧过程中释放的空气动力学直径≤2.5 μm (PM₂.₅) 的颗粒物的排放量在 6–30 mg·MJᵣₑₗₑₐₛₑd⁻¹ (WP

更新日期：2020-06-01

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