基于甲醇燃烧数值模拟的炉膛结构优化

为对炉膛结构进行优化,研究了不同炉膛长径比对甲醇燃烧室的温度分布及甲醛污染物排放的影响。以700kW甲醇锅炉为例,对甲醇燃料的燃烧过程进行数值模拟,将在Chemkin中得到的甲醇燃烧动力学反应机理导入Fluent软件中,并进行模拟分析。结果表明,炉膛最佳长径比为0.41时燃烧室内的燃烧最稳定,甲醛排放量达到最低值。

Structure optimization of boiler furnace based on methanol combustion numerical simulation

In order to study the influence of different ratio of length and diameter of chamber to the temperature distribution of methanol combustion and the emission of formaldehyde pollutants, taking methanol boiler of 700 kW as example, the combustion process of methanol fuel is numerically simulated, then the reaction methanism of methanol combustion kinetics obtained from Chemkin is imported into Fluent, and the simulation analysis is conducted. The results show that when the ratio of length and diameter of chamber is 0.41, the combustion in the chamber is most stable, and the emission of formaldehyde is the lowest.