风速对回转窑内生物质传输影响的试验研究  

Experimental Study on Biomass Transportation with Wind Flow inside Rotary Kiln

作　　者：罗玉和[1] 楼波[2] 丁力行[1] 

机构地区：[1]仲恺农业工程学院人工环境与控制研究所,广州510225 [2]华南理工大学电力学院,广州510640

出　　处：《农机化研究》2010年第4期123-126,共4页Journal of Agricultural Mechanization Research

基　　金：广东省科技计划项目(2007B080701002);仲恺农业工程学院引进优秀人才科研启动基金(2006)

摘　　要：通过试验研究了风速对回转窑内生物质传输送的影响,并与已有的几种传输模型进行了比较。结果表明:已有的几种模型不能准确描述风速作用下生物质在回转窑内的传输规律。窑内风速对生物质物料平均停留时间(MRT)的作用有两方面:一方面,生物质在下落过程中受到一个向前的推力;另一方面,生物质受到风的作用,增加了摩擦力,使得风的影响呈现出复杂特性。风速的影响范围与回转窑倾角有较大关系:回转窑倾角越大,风速的影响越显著。The experiments were conducted to determine the effect of wind on the biomass transportation inside the rotary kiln, and compared with previous transport models. The results show that previous models are not suitable to describe the transportation law of the biomass when the wind flow exists inside the rotary kiln. There are two roles of the wind flow inside kiln affected on the biomass： on the one hand, kinetic energy of wind acts on the biomass to produce a propelling force, on the other hand, the static pressure of wind acts on the biomass to produce a pressure on materials and increase the friction to biomass movement. The affecting range of wind flow has intense relation with the slope angle. Its impact will become more significant at higher slope angle.

关 键 词：生物质 风速 回转窑 传输规律 平均停留时间 

分 类 号：S216[农业科学—农业机械化工程] TK16[农业科学—农业工程]