流化床锅炉导流板布风装置气动力特性的研究

Aerodynamic Characteristics and Combustion Condition Improvement of an Air Distributor with Guide Plates in Fluidized Bed Boilers

本文对导流板布风装置气动力特性及其对燃烧工况的改善进行了研究.结果表明,导流板能降低风帽区阻力损失,使近风帽区气流速度衰减变慢,促进床内气流循环,提高流化质量,降低良好沸腾流化数(u/u_(mf)),改善燃烧效率.

The aerodynamic and fluidization characteristics and combustion condition improvement of an air distributor with guide plates in a fluidized bed boiler are discussed. Test data show that the functions of the guide plates are as follows: (a) decreasing the local pressure doop in the air button region; (b) increasing the circulation ratio of the air stream near the distributor region; (c) improving the fluidization quality and coal combustion efficiency; (d) lowering the fluidization number (v/vmf) with good fluidization condition.