CAJ | 학술논문

探讨了低热值煤气蓄热式燃烧的化学动力学特性。针对目前开展蓄热式燃烧数值模拟工作常用的总包化学机理进行优选，并利用PSR反应器对蓄热燃烧典型气氛进行不同时间尺度的演化，分析其主要组分的变化特性。同时将优选出来的总包机理应用到3 MW低热值煤气燃烧炉进行数值模拟预测。结果表明，采用JL机理模拟所得的CO浓度分布与详细化学机理和实验结果接近，而不考虑CO逆反应过程时， LA机理模拟结果显示CO燃烧过快。 JL机理对炉膛全场的温度分布与实验值也更相近，同时炉膛出口处的温度误差为全场误差最大值，约为50 K。 JL机理可以被很好的应用至低热值煤气高温空气燃烧预测。
탐토료저열치매기축열식연소적화학동역학특성。침대목전개전축열식연소수치모의공작상용적총포화학궤리진행우선，병이용PSR반응기대축열연소전형기분진행불동시간척도적연화，분석기주요조분적변화특성。동시장우선출래적총포궤리응용도3 MW저열치매기연소로진행수치모의예측。결과표명，채용JL궤리모의소득적CO농도분포여상세화학궤리화실험결과접근，이불고필CO역반응과정시， LA궤리모의결과현시CO연소과쾌。 JL궤리대로당전장적온도분포여실험치야경상근，동시로당출구처적온도오차위전장오차최대치，약위50 K。 JL궤리가이피흔호적응용지저열치매기고온공기연소예측。
Characteristic of chemical reaction dynamic for regenerative combustion of blast furnace gas has been investigated in the present work. Different global chemical reaction mechanisms have been optimized and evaluated under different time scale in PSR with a typical species condition. Moreover, the optimized global mechanism has been applied in the numerical works for a 3 MW facility and validated by the experiment. The results show that the CO prediction by JL mechanism agrees better with detailed mechanism calculation and experimental data. And the temperature profile prediction of JL mechanism is better than that of LA. The maximal temperature difference is about 50 K at furnace outlet. It should be noted that JL mechanism can be reasonably applied for major species prediction of regenerative combustion of blast furnace gas.