木材干燥炉设计+CAD图纸
毕业论文关键词： 木材干燥；生物质燃料；设计计算
The Design of Wood Drying Furnace
Abstract: For this topic design content of wood drying furnace, with the improvement of the quality of public life, the demand for wood products in gradually increasing. But considering only raising our wood drying technology of wood of the growth cycle, reduce wood waste generation can effectively solve the problems of timber demand quantity. Low carbon and environmental protection to this theme, there are part of wood drying furnace fuel has been transformed into by waste wood is suppressed and the biomass fuel particles. Reduce the for the use of fossil fuels and the unit fuel calorific value is not low, low quantity of heat can reach 3000kcal. can achieve wood drying furnace heat . in this design, utilize biomass fuel and selected the rational construction of address will largely improve the economic index of wood drying furnace. After the end of the calculation that, the wood drying furnace per hour burning consumption 12.3kg, cost of operation need only 14.4 yuan, environmental protection and low price.
Keywords: Wood drying; biomass fuel; design and calculation
目录
摘要 . i
Abstract i
目录 ii
1 绪论 . 1
1.1 国内外木材加工的发展 . 1
1.2 木材中水分分类 . 3
1.3 木材干燥的重要性 4
1.4 木材干燥炉发展方向 .. 4
1.5 生物质燃料发展前景 .. 5
1.6 设计方案及思路 . 7
2 初步参数确定 8
2.1 材堆、板材尺寸确定 .. 8
2.2 干燥室内空气参数确定 .. 10
2.3 水分蒸发量计算 .. 10
2.4 干燥室循环风量及新鲜风量确定 . 11
3 热力计算 13
3.1 干燥时所消耗热量 . 13
3.2 干燥室壳体散热 .. 13
3.3 换热器换热量及换热面积计算 .. 15
3.4 燃料理论燃烧温度计算 .. 17
3.5 燃烧室热平衡计算 . 19
3.6 空气阻力计算及风机选型 . 22
3.6.1 风机段阻力计算 22
3.6.2 断面固定的直线气道阻力计算 22
3.6.3 材堆阻力计算 . 23
3.6.4 其他部分阻力计算 .. 23
3.7 进排气管计算 26
4 木材干燥室及辅助设备最终参数 .. 27
4.1 木材干燥炉技术经济指标 . 27
4.2 换热器基本参数 .. 27
5 总结 .. 29