以白皮松园林修剪废弃物为原料制成固体燃料,采用响应面法对其物理特性进行多因素试验研究,分析原料含水率、温度及成型压力三因素交互作用对固体燃料密度、耐久性、抗跌碎性的影响规律;应用马氏距离法对燃料的密度、耐久性和抗跌碎性进行响应优化,并采用同步热分析仪分析白皮松燃烧特性。结果表明：在含水率6.5%~10%、温度70~100 ℃、压力100~130 MPa范围内燃料密度、耐久性、抗跌碎性达到1.01 g/cm3、95%、98%以上,在含水率6.9%、温度84.5 ℃、压力130 MPa时为最佳成型参数组合;试验验证在此条件下成型的燃料密度、耐久性、抗跌碎性分别达到1.15 g/cm3、98.5%和99.7%。样品在10、20、30 K/min升温速率条件下综合燃烧特性指数分别为0.45、2.18、13.26×10-8 K3/min2,即随升温速率的增大而增大。
Abstract
A multi-factor experimental study is conducted on the physical properties of solid fuel made from Pinus bungeana waste, using the response surface method to analyze the effects of the interaction of 3 factors, namely, moisture content of raw materials, temperature and molding pressure, on the density, durability and shatter resistance of solid fuel. The response optimization of the density, durability and shatter resistance of the fuel is carried out by applying the Mahalanobis distance method. The combustion characteristics of Pinus bungeana are also analyzed using a synchronous thermal analyzer. The results show that fuel density, durability, and shatter resistance reach to 1.01 g/cm3, 95%, and 98% or more, corresponding to the range of 6.5%-10% moisture content, 70-100 ℃, and 100-130 MPa pressure. And the best combination of molding parameters is obtained, with the water content 6.9%, temperature 84.5 ℃, and pressure 130 MPa. Under these conditions, the density, durability, and drop resistance of the fuel molded reach to 1.15 g/cm3, 98.5%, and 99.7%, respectively. Meanwhile, the combustion characteristic indexes are 0.45, 2.18, and 13.26 × 10-8 K3/min2 for 10, 20, and 30 K/min heating rates, respectively. And the combustion characteristic indexes increase with the increase of the heating rate.
关键词
生物质 /
成型 /
物理性能 /
燃烧特性 /
马氏距离法
Key words
biomass /
co-densification /
physical properties /
combustion characteristics /
Mahalanobis distance method
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基金
国家燕麦荞麦产业体系重大专项（CARS-07-D-2）
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