玉米/木薯淀粉基竹炭成型燃料的品质特性

为制备便于贮存、运输以及使用性能较佳的生物质炭成型燃料，采用玉米和木薯两种改性淀粉胶粘剂，试验研究了胶粘剂用量对竹炭成型燃料抗压强度、抗跌碎强度、热值和灰分等品质特性指标的影响。结果表明：当淀粉胶粘剂用量在10%～30%范围内变化时，竹炭成型燃料的抗压强度、抗跌碎强度提高，胶粘剂用量对其增强作用显著，对热值和灰分的影响非常小；在相同胶粘剂比例条件下，木薯淀粉基竹炭成型块的抗压、抗跌碎强度优于玉米淀粉基竹炭成型块。综合考虑，选用木薯淀粉胶粘剂比例25%制出的炭成型燃料品质相对较佳。

Quality characteristics of bamboo charcoal briquette based on corn and cassava starch adhesive

In order to prepare bio-char briquette with easier storage and transportation and better combustion performances, both modified corn and cassava starch adhesives were employed and the effects of adhesive contents on the compression resistance, shatter resistance, calorific value, and ash content of bamboo charcoal briquettes were investigated. Results showed that the compression resistance and shatter resistance were significantly improved with starch adhesive content in the range of 10%-30%. However, the influence of adhesive content on the calorific value and ash content was not obvious. The compression resistance and shatter resistance of cassava starch based briquette were larger than that based on corn starch under the same adhesive ratio. Bio-char briquette with optimal performances was obtained using 25% cassava starch adhesives.