循环流化床炉膛颗粒浓度分布和循环流率实验研究

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英文篇名：Experimental Study on Solids Suspension Density Distribution and Solids Circulating Rate in A CFB 作者：周棋 ; 刘行磊 ; 李维成 ; 吴朝刚 ; 岳鹏飞 ; 宋刚 英文作者：ZHOU Qi;LIU Xinglei;LI Weicheng;WU Chaogang;YUE Pengfei;SONG Gang;DBC Clean Combustion and Flue Gas Purification Key Laboratory of Sichuan Province; 关键词：循环流化床 ; 钛铁矿载氧体 ; 循环灰 ; 颗粒浓度分布 ; 循环流率 英文关键词：circulating fluidized bed;;ilmenite oxygen carrier;;recycle ash;;solids suspension density distribution;;solids circulating rate 中文刊名：DDPL 英文刊名：Dongfang Electric Review 机构：东方电气东方锅炉股份有限公司清洁燃烧与烟气净化四川省重点实验室; 出版日期：2019-06-25 出版单位：东方电气评论 年：2019 期：v.33;No.130 语种：中文; 页：DDPL201902008 页数：5 CN：02 ISSN：51-1333/TM 分类号：32-36

摘要

在高度为10 m循环流化床冷态试验台上,采用差压法和积料法分别测定流化床炉膛颗粒浓度分布和物料循环流率,研究不同颗粒物料、在不同气流速度炉内颗粒浓度分布特性和循环流率规律。研究表明循环流化床颗粒浓度沿炉膛高度方向呈现先急剧降低后缓慢减小的规律。对于一定的颗粒物料,炉膛气流速度(截面速度)决定了炉膛稀相区区域物料浓度和和循环流化床锅炉的固体物料循环流率。
        Experimental studies are conducted for different particles operation characters and solid circulating rate in the cold circulating fluidized bed(CFB)test with a riser height of 10 m. The solids suspension density distribution and solid circulating rate are measured by the pressure difference method and the particle stack method. Distribution characteristics of particle concentration and solid circulating rates are discussed in particle material and airflow velocity terms. The results show that the solids suspension density distribution decreases rapidly at first, and then decreases laxly with the increasing height in the CFB. For a certain particle material, the solid circulating rates and solids density at the up furnace part lean-phase zone are determined by furnace particle velocity.

引文

[1]王琦,程易,等.新型节能CO2零排放工艺——化学循环燃烧技术[J].化学进展,2008,20(10):1612-1620
    [2]胡南,王巍,等.38 m/54 m高循环流化床床内流体动力特性研究[J].中国电机工程学报,2009,29(26):7-12
    [3] 黄卫星,石炎福,等.16m高气固提升管中的压力梯度与流动行为研究[J].高校化学工程学报,2001,15(2):109-114
    [4] 周星龙,程乐鸣,等.六回路循环流化床颗粒浓度及循环流率试验研究[J].中国电机工程学报,2012,32(5):9-14