能量分析与一次风煤粉浓度测量

在火力发电厂的锅炉运行中，煤粉燃烧器的一次风煤粉流量的均匀性对锅炉的安全经济运行起着重要的作用。一次风煤粉浓度的准确测量一直是工程技术上的前沿问题，尤其是对乏气送粉锅炉进行煤粉浓度监测更是缺乏有效的方法。通过对一次风气流与煤粉颗粒混合过程的分析，从开放系统的能量方程出发，确立了乏气送粉锅炉一次风煤粉浓度的测量方法，并成功应用于生产实践，为一次风煤粉浓度在线监测提供了新的途径。

Energy Analysis and Measurement of Pulverized-Coal Concentration in Primary Air

During the boiler operation of a thermal power plant the uniformity of pulverized coal flow of a pulverized coal burner in primary air plays a key role in ensuring the safe and economic operation of a boiler. The accurate measurement of the concentration of pulverized coal in primary air is a problem of great importance, which has yet to be effectively solved. This is especially so in the case of pulverized coal monitoring in a boiler using exhaust gas for pulverized coal transport. The mixed process of primary air flow and pulverized coal particles is analyzed. On this basis and proceeding from the energy equation of an open system the authors have developed a method for measuring the concentration of pulverized coal in primary air for a boiler employing exhaust gas for transportng pulverized coal. This method has been successfully used in production practice, blazing a new path for the on line monitoring of pulverized coal concentration in primary air.