固体吸附剂对流化床燃烧中痕量元素控制研究  

STUDY OF CONTROL WITH ABSORBENTS ON TRACE ELEMENTS DURING FLUIDIZED BED COMBUSTION

作　　者：陆继东[1] 余亮英[1] 张娟[1] 

机构地区：[1]华中科技大学煤燃烧国家重点实验室,湖北武汉430074

出　　处：《中国电机工程学报》2004年第3期187-192,共6页Proceedings of the CSEE

基　　金：国家重点基础研究发展规划项目(G1999022212);国家科技合作重点项目(2001 CB711203)~~

摘　　要：在煤燃烧过程中添加固体吸附剂来抑制痕量金属的排放被广泛认为是一项有前景的技术。为了研究固体吸附剂的吸附机理和对不同对象的吸附效果,在实验室小型机理性流化床实验台架上进行了固体吸附剂对痕量金属的吸附实验,实验温度稳定在 950℃。实验选用平顶山烟煤、焦作无烟煤和六盘水贫煤 3 种不同的煤种,以氧化铝、石灰石和高岭土作为吸附剂。研究发现高岭土对 Pb 有很好的吸附效果;3 种吸附剂对 Cr 都有吸附效果,在烟煤中效果尤为明显;但是对 Cd 的吸附不明显。It is a potency technology using absorbents to reject the emission of trace elements during coal combustion. For studying the absorbed mechanics and the absorbed effectiveness on variant objects, trace elements capture experiments with absorbents were performed in a laboratory scale fluidized bed combustor under 1223K. Alumina, limestone and kaolinite served as solid absorbents with three kinds of coal includes Pingdingshan bituminous coal, Jiaozuo anthracite coal and Liupanshui lean coal. Experimental results indicated that kaolinite was an effective absorbent for Lead, and all three absorbents were effective for Chromium (especially for bituminous coal), but it was not striking for Cadmium.

关 键 词：流化床锅炉 燃烧 固体吸附剂 痕量元素 物理吸附 化学吸附 

分 类 号：TK229.66[动力工程及工程热物理—动力机械及工程]