生物质型煤与无烟散煤在烟叶烘烤中的应用效果对比

Biomass Compounded Coal and Anthracite for Tobacco Curing

2010年在云南曲靖进行了生物质型煤与无烟散煤的对比研究,通过试验分析了不同类型燃料的燃烧效率、添加次数与耗煤量,以及对烤后烟叶质量、烘烤经济效益的影响。研究结果表明:生物质型煤升温均衡,主要表现在烘烤定色阶段和干筋阶段;生物质型煤稳温效果好,主要表现在变黄期关键温度点38℃和定色期47℃,但总体耗煤量大、加煤频繁;燃料燃烧效率比无烟散煤平均高出4.0个百分点;烤后烟叶油分足、色度好;在提高中上等烟比例的同时,每100kg干烟净利润增收95元,比使用无烟散煤增值9.8个百分点。生物质型煤采用静态渗透式扩散燃烧方式,利用生物质与煤的互补燃烧,具有高效的燃烧特性。

For curing tobacco,the biomass compounded coal（BCC） and anthracite were compared in Qujing,Yunnan in 2010.Effect of the different materials on burning efficiency,coal refill frequency and fuel consumption,as well as quality of the cured tobacco and curing benefits were examined.The results showed that BCC raised temperature steadily,exhibiting the effect mainly during the color-fixing and drying stages.It could maintain the curing temperature evenly,which was critical mainly during the yellowing at 38℃ and color-fixation at 47℃.But,the coal quantity needed was greater and the requirement for coal refill more frequent than anthracite.The burning efficiency of BCC was 4.0 percent higher than the anthracite.The tobacco cured by using the former retained enough oil and sustained an attractive color.Hence,there was an increased proportion of high quality tobacco with an improved profit margin by 95 yuan/100 kg cured tobacco,which was 9.8 percent higher,of the product cured by using BCC than anthracite.Furthermore,BCC applied the static immersion diffusion combustion mode to complement biomass and coal resulting in a highly efficient combustion.Therefore,BCC could potentially be used as an alternative fuel to replace anthracite for tobacco curing.