煤燃烧固氟剂及固氟效果研究  

Study on the Calcium-based Sorbent for Removal Fluorine During Coal combustion

作　　者：李舒伶[1] 齐庆杰[1] 刘建忠[2] 曹欣玉[2] 周俊虎[2] 岑可法[2] 

机构地区：[1]辽宁工程技术大学资源与环境工程学院,阜新123000 [2]浙江大学机械与能源工程学院,杭州310027

出　　处：《环境科学》2004年第2期174-176,共3页Environmental Science

基　　金：国家重大基础研究发展规划项目(G19992 2 111);国家自然科学基金资助项目 (5 98760 3 6)

摘　　要：通过热力学分析煤燃烧过程中钙基固氟剂固氟反应机理和高温高效钙基固氟剂开发原则 ;通过流化床和链条炉燃烧试验考察石灰石和钙基固氟剂燃烧固氟效果 .试验表明 :流化床燃烧时石灰石燃烧固氟效果明显 ,在Ca/F =6 0～ 70时 ,脱氟率可达到 6 6 7%～ 70 0 % ;链条炉燃烧试验表明 :利用工业废料开发的钙基固氟剂固氟效果显著 ,在Ca/F =6 5～ 80时 ,脱氟率为 5 7 32 %～ 75 19% .在燃煤过程添加石灰石和钙基固氟剂具有固氟固硫的双重作用 .In the paper, the reaction of CaO HF and fluorine removal mechanics at high temperature by blending calcium based sorbents with coal during coal combustion were discussed, and test results about fluorine retention during coal combustion in fluidized bed and chain grate furnace were reported. The results identified that lime and calcium based sorbets developed can restrain the emission of fluorine during coal combustion. The efficiency of fluorine removal can reach 66 7%～70 0% at Ca/F 60～70 by blending lime with coal in fluidized bed combustion, and the efficiency of fluorine removal are between 57 32% and 75 19% by blending calcium based sorbets with coal in chain grate furnace combustion. Blending CaO or lime with coal during coal combustion can remove SO 2 and HF simultaneously.

关 键 词：氟 煤燃烧 固氟反应 固氟剂 流化床 链条炉 

分 类 号：TQ534[化学工程—煤化学工程] X701.7[环境科学与工程—环境工程]