循环流化床锅炉J阀工作特性试验研究  

TEST STUDY ON WORKING BEHAVIOR OF J-TYPE VALVE USED FOR CFB BOILER

作　　者：李海广[1] 赵增武[1] 李科[1] 李保卫 武文斐[1] 

机构地区：[1]内蒙古科技大学能源与环境学院,内蒙古包头014010

出　　处：《热力发电》2012年第4期36-39,共4页Thermal Power Generation

基　　金：内蒙古科技大学创新基金2010NC024;内蒙古科技大学产学研培育基金PY-201017

摘　　要：J型回料阀是循环流化床锅炉(CFB)常采用的一种回料装置,其工作特性对锅炉正常运行十分重要。提出一种通过测量CFB锅炉内关键部位压力差如立管差压、风室差压、炉膛差压等来分析和判断J阀工作特性的方法,并在冷态CFB试验台上进行了试验。试验结果表明,测量炉内关键部位压力差的变化可以了解J阀的工作特性,对解决CFB锅炉运行中常出现的J阀堵塞、震动等问题提供了针对性的方法和措施。The J - type valve is a kind of facility used frequently to return materials into risers in CFB boilers,its working behavior is very important for ensuring normal operation of the CFB boiler. A method for analysing and evaluating the working behavior of J - type valve based on pressure difference on key parts in the CFB boiler,such as the pressure difference of material layer in the riser,the pres- sure difference between air quantity in returned material and the main air compartment, and the pres- sure difference of material layer in the furnace etc. , has been put forward, and the said method being tested on the cold - state test stand. Results of test show that the measurement of pressure difference variation on key location in the furnace is helpful to undestand the working behavier of the J - type valve,providing method and measure for solving the problems, i. e. blockage and vibration of J - type valve,occurred frequently in operation of CFB boilers.

关 键 词：CFB锅炉 回料装置 压力差 J阀 风室 物料床层 

分 类 号：TK229[动力工程及工程热物理—动力机械及工程]