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化工学报  2015 

管壳式自热型氨分解反应器模拟分析

DOI: 10.11949/j.issn.0438-1157.20150639, PP. 3169-3176

Keywords: 化学反应器,数学模拟,制氢,氨分解,并流操作

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Abstract:

建立了管壳式自热型氨分解反应器,其中管内为拟均相催化反应,管外壳程为考虑气膜传递阻力的非均相催化反应。通过模拟比较和分析了氨气和氢气-空气混合物并流与逆流操作的反应结果。在并流操作中,氢燃烧产生的高温正好与高氨气浓度对应,氢燃烧热被充分用于氨分解反应,因此反应效率要显著高于逆流操作。与等温反应器的比较分析表明,在自热和高转化率条件下并流操作的效率与等温操作效果很接近。

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