电石渣催化煤燃烧特性的影响因素分析  

CATALYSIS EFFECT OF CARBIDE LIME ON VARIOUS COAL COMBUSTION

作　　者：程军[1] 周俊虎[1] 刘建忠[1] 周志军[1] 曹欣玉[1] 岑可法[1] 

机构地区：[1]浙江大学能源洁净利用与环境工程教育部重点实验室,浙江杭州310027

出　　处：《燃料化学学报》2004年第1期37-42,共6页Journal of Fuel Chemistry and Technology

基　　金：国家重点基础研究发展规划项目(G1999022204);国家高技术研究发展计划项目(2002AA529122)~~

摘　　要：用热重法研究了不同条件下电石渣的催化煤燃烧特性,发现电石渣对晋城煤的着火温度和固定碳燃尽率都具有一定的促进作用,而且随添加量的增加助燃作用增强。采用干法混合方式添加0 5%电石渣的助燃作用很小,而采用浆状混合方式则具有较为明显的助燃效果。添加0 5%电石渣能使晋城无烟煤的着火温度由582℃降低到576℃,使潞安贫煤的固定碳燃尽率由89 41%提高到94 84%,而对长广高灰烟煤的着火和燃尽特性都影响很小。The catalysis effect of carbide lime, which is a residue in the ethyne production and has a good sulfur-retention property, on pulverized coal combustion has been studied on a thermogravimetric analyzer. It is found that when the carbide lime is added into Jincheng anthracite with a weight ratio of 0.5% in a slurrying process, the ignition temperature of coal is reduced from 582℃ to 576℃ and the burnout efficiency of fixed carbon is promoted from 91.11% to 92.75%. When the adding proportion of carbide lime is enhanced to 1.0%, the ignition temperature is further decreased to 570℃ and the burnout efficiency is increased to 94.39%. However, blending carbide lime with the coal in a dry process gives little catalysis on combustion parameters. In the three experimental coals, carbide lime with a weight ratio of 0.5% has the best catalysis effect on ignition temperature of Jincheng anthracite (maximum reduction by 6℃) and on burnout efficiency of Lu'an semi-anthracite (maximum promotion by 5.43%), but it has little effect on the properties of Changguang bituminous coal with a high ash content of 40%.

关 键 词：煤燃烧 催化 电石渣 着火温度 燃尽率 

分 类 号：TQ534[化学工程—煤化学工程]