摘要当今世界能耗不断增加,传统不可再生资源存在一定限制,生物质能源以其来源广泛、燃烧清洁、可再生性等优点逐步受到重视。分析了生物质能源的特点与发展现状,以及生物质粉体在重金属废渣处理方面的运用;计算了不同燃料的绝热燃烧温度;分析了全覆盖耐火层的炉膛出口温度;计算了不完全燃烧时燃料的绝热燃烧温度与炉膛出口温度;考虑了外加灰分条件下燃烧温度计算;讨论了过量空气系数小于 1 时的理论燃烧温度,以及特征过量空气系数值求解;建立并分析了典型燃料的一维火焰行程温度特征模型。60452
毕业论文关键词: 生物质 燃烧温度 不完全燃烧 外加灰分 过量空气系数
Title The calculation and design of powder burner
Abstract With the increasing of energy consumption in nowadays, the traditional non-renewable resources is in restrictions. Biomass energy is gradually taken seriously of its wide range of sources, cleaner-burning, renewable, etc. This paper analyzes the characteristics and development status of biomass energy, and biomass powder in the use of heavy metal waste treatment; calculates the temperature in adiabatic theory of the different fuels; analysis exit temperature of full coverage furnace of the refractory layer; calculates the adiabatic combustion temperature of the fuel and furnace outlet temperature of incomplete combustion; Considers the calculation of temperature with the additional ash; analysis the theoretical combustion temperature of incomplete combustion when the excess air factor is less than 1,and the number calculation of the special ratio of excess air; Creates and analyzes a one-dimensional temperature model of flame stroke for typical fuels . Keywords: Biomass; Combustion temperature; Incomplete combustion; Additional ash ;The ratio of Excess air
目 次
1 绪论… 1
1.1 生物质能源的特点… 1
1.2 生物质能源的现状… 2
1.3 粉体燃烧… 2
1.4 本文内容概述… 4
2 完全燃烧条件下绝热燃烧温度计算 6
2.1 生物质燃料主要性能指标… 6
2.2 绝热燃烧烟温计算… 8
2.3 程序化说明… 10
3 完全燃烧条件下考虑炉膛换热实际温度… 11
3.1 炉膛条件12
3.2 炉膛传热计算 12
3.3 程序化说明… 16
4 考虑不完全燃烧条件下的温度计算… 17
4.1 烟气成分 17
4.2 燃料成分基准转化 18
4.3 燃料燃烧烟温计算 20
4.4 程序化说明… 20
5 考虑外加成分条件下的温度计算 21
5.1 外加成分说明 21
5.2 燃料成分基准转化 21
5.3 燃料燃烧烟温计算 22
5.4 程序化说明… 22
6 过量空气系数小于1时的火焰温度 23
6.1 不完全燃烧条件… 23
6.2 燃烧温度计算机理 24