煤粉气流火焰稳定性条件分析

Analysis of Pulverized Coal Current Flow Flame Stability Conditions

试图通过简单的“输入—输出”关系，判别煤粉气流火焰稳定性。选择的“输入”参数为一次风工况初始条件，使判别准则直观合理。建立了回流区集总参数法热平衡模型，由此求解了保证火焰稳定的一次风煤粉浓度、风速、风温。并用单角煤粉炉热态实验的结果，对模型的可靠性进行了验证。

Through a simple “input output” relationship the ascertainment of pulverized coal flow flame stability is attempted.With the selected “input” parameter serving as the initial condition of a primary air operating regime the ascertainment criteria are made forthright and rational.A heat balance model based on the use of a return flow zone lumped parameter method has been established in order to solve for the primary air pulverized coal concentration,air speed and air temperature essential for the assurance of flame stability.The reliability of the model is verified by employing the hot state experimental results of a single angle pulverized coal boiler.