风冷式颗粒取样装置在循环床锅炉上的应用  

Application of Air-Cooled Particle Sampling Probe in Circulating Fluidized Bed Boiler

作　　者：段钰锋[1] 赵长遂[1] 徐益谦[1] 

机构地区：[1]东南大学热能工程研究所

出　　处：《锅炉技术》2001年第8期1-4,共4页Boiler Technology

基　　金：国家"九五"攻关项目子专题;编号:96-A19-03-04-05

摘　　要：提出一种实用新颖的完全风冷式颗粒质量流率热态测试装置．它在结构上采用了变管径措施，以提高取样烟气在取样管内的流速，减少颗粒在管内的沉积．在方法上采用了风冷却，以避免常规的水冷取样探头造成的冷却过度而使烟气中水蒸气发生凝结，防止颗粒在取样管内的吸附．用该装置对国产７５ｔ／ｈ循环流化床锅炉稀相区进行测试，结果合理准确，显示出比常规水冷取样探头的优越性。An innovative sampling probe is proposed in this paper which is cooled by air com-pletely for measuring hot particle mass flux in dilute zone of Circulating Fluidized Bed boiler. Variable diameter of the sampling probe is employed so as to speed up and avoid particle depo-sition within the duct. Compared with the conventional water cooled probe, the new probe effec-tively prevents condensation of steam in the drawn flue gas. The absorption and agglomeration of fines on the internal duct wall are eliminated. The accuracy is more improved.

关 键 词：循环床锅炉 风冷式颗粒取样装置 气固两相流 

分 类 号：TK229.66[动力工程及工程热物理—动力机械及工程]