超低热值煤气燃烧过程的数值模拟

Numerical Simulation Research of Low Calorific Value Gas Combustion Process

根据超低热值煤气的特点,设计了低热值煤气燃烧器以及燃烧室。采用数值模拟方法对该燃烧系统内的燃烧特性进行了计算,计算结果表明空气预热温度以及该燃烧系统独特的蓄热体结构对提高燃烧稳定性具有重要影响。研究发现过量空气系数对燃烧也有重要影响,在过量空气系数为1.1时,低热值煤气能高效的燃烧。

According to features of low calorific value gas, we designed low calorific value gas burners and combustion chamber, we have researched the characteristics of burning system on the basis of numerical simulation. The results showed that air preheating temperature and the unique heat retaining mass of this burning system have an important effect on improving combustion stability. Moreover, excess air coefficient also has an important effect on burning. When the excess air coefficient is 1.1, low calorific value gas can burn effectively.