生物质锅炉余热利用对烟气脱硝的影响  

Effect of Biomass Boiler Waste Heat Utilization on Flue Gas Denitration

作　　者：郝苗苗 李玉昆[2] 任霄汉 Hao Miao-miao;Li Yu-kun;Ren Xiao-han

机构地区：[1]山东省生态环境保护宣传教育中心 [2]山东大学热科学与工程与研究中心

出　　处：《节能与环保》2020年第7期74-75,共2页

摘　　要：生物质具有低灰分、低硫、低氮等优势,可减少利用和转化过程中产生的硫化物、氮化物和粉尘。但是生物质具有水分大、氯含量高的特点,使锅炉在运行过程中产生结渣腐蚀的问题。本文提出了一种生物质预处理的技术,利用锅炉尾部的烟气余热对生物质进行烘焙处理,使其含水量和含氯量降低。烘焙产物固体炭和热解气(CO2、CH4、CO)等分别通入炉膛内与氮氧化物进行还原反应,从而达到高效脱硝的效果。Biomass has the advantages of low ash,low sulfur and low nitrogen,which can reduce sulfide,nitride and dust produced in the process of utilization and conversion.However,biomass has the characteristics of large moisture and high chlorine content,which makes the boiler slagging and corrosion in the process of operation.In this paper,a biomass pretreatment technology is proposed.The waste heat of flue gas from the boiler tail is used to bake the biomass,so as to reduce its water content and chlorine content.The solid carbon and pyrolysis gas(CO2,CH4,CO)of baking products are respectively sent into the furnace for reduction reaction with nitrogen oxides,so as to achieve the effect of high-efficiency denitrification.

关 键 词：生物质烘焙 余热利用 氮氧化物脱除 

分 类 号：X701[环境科学与工程—环境工程] TK229[动力工程及工程热物理—动力机械及工程]