利用3D-PDA系统对四角切燃锅炉炉膛上部的气固两相流场冷态测量研究

The experimental study of gas solid two phase flow in upper part of the tangentially fired boiler with 3D-PDA

四角切燃锅炉是我国电力行业中应用最广泛的炉型。本文在冷态模型实验台上 ,采用三维激光相位多普勒动态粒子分析仪 ( 3D -PDA) ,针对正常工况和一次风微量反旋偏转技术工况 ,测量了炉膛上部气固两相流场 ,得出了较准确、全面的气固两相流场数据 ,并对炉膛上部气固两相流场特点进行了描述 ,对炉膛对流受热面烟道的烟温偏斜原因作出分析。本文的工作为调整炉膛上部气固两相流场、改善炉膛对流受热面烟道烟温及烟气流量偏斜提供了思路和实验依据。

In this paper,a gas solid two phase aerodynamic field in a cold modeling furnace was measured with the Three Dimensional Particle Dynamic Analyzer.The experiment results provided comprehensive and detailed understanding on the aerodynamic field characteristics in the furnace and the furnace exit.