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以氨厂转化炉的操作数据为例,本文计及管内反应动力学、对流传热和压力降,采用区域法计算管外辐射传热。预言工艺气温度分布以及烟气、管表面、耐火墙的温度分布。文中叙述了如下的计算结果: 1) 催化剂活性; 2) 过剩空气对燃料消耗和温度分布的影响; 3) 水碳比对燃料消耗的影响; 4) 生产负荷对燃料消耗及温度分布的影响; 5) 燃料分布对燃料消耗与温度分布的影响。
Take the operation data of ammonia plant as an example, this article takes into account the reaction kinetics, convective heat transfer and pressure drop in the pipe, and calculates the heat transfer outside the pipe by the zone method. Predict process gas temperature distribution and flue gas, tube surface, refractory wall temperature distribution. The results are as follows: 1) catalyst activity; 2) the effect of excess air on fuel consumption and temperature distribution; 3) the impact of water-carbon ratio on fuel consumption; 4) the impact of production load on fuel consumption and temperature distribution; 5) The impact of fuel distribution on fuel consumption and temperature distribution.