王晓宁,李文艳,王妮妮,白晨曦,肖海平

• 1:华北电力大学能源动力与机械工程学院

摘要(Abstract)：

电厂采用的制氨方法有尿素热解法和水解法,针对某电厂300 MW机组利用Aspen Plus软件对比分析了2种方案的优劣,从水解制氨系统的尿素进料质量分数、反应温度及压力3个方面,分析了不同反应条件对水解产物的影响。结果表明:水解方案反应温度低,可采用低品质蒸汽作为热源且能耗量仅为热解的20%～30%,从节能角度出发,水解制氨为最佳方案;随尿素进料质量分数的增加,产氨量增加,耗热量降低,但液相中尿素质量分数也随之升高,易发生设备腐蚀;随着温度的上升,尿素水解速率提高,但耗热量上升明显,经济性较差;增加压力能降低设备发生腐蚀的风险,但会对气体的析出产生抑制;综合考虑,尿素水解反应条件为尿素进料质量分数50%,温度150～160℃,压力0.6～0.8 MPa比较合适。

关键词(KeyWords)： 烟气脱硝;尿素;热解;水解;AspenPlus软件;反应条件

Abstract:

Keywords:

基金项目(Foundation):

作者(Author): 王晓宁,李文艳,王妮妮,白晨曦,肖海平

DOI: 10.19666/j.rlfd.201809204

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