摘要
以质量产率、能量产率、高位热值为评价指标,对热解温度、升温速率、保留时间进行正交实验,确定了玉米秸秆成型颗粒烘焙最佳工艺条件.结果表明,热解温度290℃、升温速率7.0℃/min、保留时间45 min时产品综合性能最好,热值为20.32MJ/kg,能量产率为75.37%.产品含水率、平衡含水率、吸水率、耐久性、跌落强度等质量指标分析表明,烘焙玉米秸秆成型颗粒具有优良的贮藏、运输性质.
The orthogonal experiment was carried out on the pyrolysis temperature, the heating rate and the residence time using the mass yield, the energy yield and the high heating value as the evaluation index by which the optimum processing conditions of torrefaction of corn stalk pellets were determined. The results showed that the optimal process conditions are 290℃ of pyrolysis temperature, 7.0℃/min of the heating rate, 45 min of the residence time, and the higher heating value and the energy yield are 20.32 MJ/kg and 75.37%, respectively. The analysis of product quality including the water content, equilibrium moisture content, water absorption, durability and drop strength of the products showed that torrefaction corn straw pellets can be stored and transported advantageously.
出处
《过程工程学报》
CAS
CSCD
北大核心
2017年第3期545-550,共6页
The Chinese Journal of Process Engineering
基金
国家科技支撑计划资助项目(编号:2012BAD30B01)
关键词
玉米秸秆
成型颗粒
烘焙
工艺优化
质量分析
corn straw
pellet
torrefaction
technology optimization
analysis of product quality
