旋流式煤粉分配器内流场数值模拟  

Numerical simulation of internal flow field of swirl pulverized coal powder distributor

作　　者：王伟[1] 高占民 Wang Wei;Gao Zhanmin(College of Materials Science and Engineering, Jilin University,Jilin Changchun,130022, China;Roll Forging Research Institute, Jilin University,Jilin Changchun,130022, China)

机构地区：[1]吉林大学材料科学与工程学院,吉林长春130022 [2]吉林大学辊锻工艺研究所,吉林长春130022

出　　处：《机械设计与制造工程》2020年第7期60-63,共4页Machine Design and Manufacturing Engineering

基　　金：吉林省科技发展基金资助项目(20000323)。

摘　　要：为解决燃煤发电锅炉煤粉分配不理想及浓度偏差大的问题,采用旋流式煤粉分配器使风粉混合后形成旋流均匀地将煤粉输送到燃烧器中。利用Fluent软件对旋流式煤粉分配器进行了两相流的流动特性数值模拟。旋流式煤粉分配器实际应用后,减少了煤粉输送管道内煤粉浓度的偏差,实现了变负荷稳定燃烧。In order to solve the problem of poor distribution of pulverized coal and large concentration deviation in coal-fired power generation boiler,swiriling pulverized coal distributor is used to mix air and pulverized coal into a swiriling flow to transport the pulverized coal evenly for the burner.The flow characteristics of the two-phase flow in the swirl pulverized coal distributor are simulated by FLUENT software.After the practical application of swirl type pulverized coal distributor,it reduces the deviation of pulverized coal concentration and dilution in the pulverized coal conveying pipeline,and realizes the stable combustion with variable load.

关 键 词：旋流式 煤粉分配器 数值模拟 两相流 

分 类 号：TK223.7[动力工程及工程热物理—动力机械及工程]