摘要
在分析目前流化床存在问题的基础上,提出了“内循环流化床”的概念。指出下旋流场是实现粒子内循环的重要条件。用三种物料进行了粒子带出率试验,验证了内循环流化床对控制粒子带出率的有效性。在内循环流化床中,气固扰动强烈,混合充分,粒子停留时间长,有利于提高燃烧和脱硫效率。内循环流化床还具有结构简单、紧凑、投资省、运行维护方便等特点。
Based on an analysis of the problems existing in current fluidized beds, this paper comes up with the concept of an inner circulating fluidized bed and points out that a down whirl flow field constitutes an important condition for the realization of particle inner circulation. Particle carryover rate experiment has been performed using three kin(?)s of materials with the effectiveness of the inner circulating fluidized bed for the control of particle carryover being verified. In the inner circulating fluidized bed exists a sufficient mixing due to a ￡as-solid turbulence and long retention time. The above-cited two factors are conducive to improving combustion and desulfurization efficiency. The inner circulating fluidized ted is also characterized by a simple and compact structure, low first cost as well as an easy operation and maintenance.
出处
《热能动力工程》
CAS
CSCD
北大核心
1991年第6期341-346,共6页
Journal of Engineering for Thermal Energy and Power
基金
黑龙江省自然科学基金
关键词
锅炉
流态化炉
内循环
粒子
带出率
boiler
fluidized bed
inner circulation
experiment
