合成氨转化炉高效节能燃烧器的研究与应用

Study and application of high-efficiency and energy-saving burner in reformer of ammonia plant

通过分析燃烧过程中助燃空气的过剩量,对合成氨一段转化炉现有燃烧器存在的问题进行了诊断。采用对比实验的方法研究了混合方式对燃烧器特性的影响,开发了一种新型燃烧器,经过工业性试验和试用,取得了良好效果。新型燃烧器消耗的助燃空气量明显减少,燃烧状况良好,转化管的传热特性改善,在不增加燃料消耗的情况下,炉膛温度和转化气温度显著升高,排烟温度降低,二段转化炉耗氧量下降,甲烷转化率提高,年增产氨5 700 t。

The problems with the existing burners of the primary reformer in ammonia plant were investigated through the analysis of excess combustion air in combustion process. The influence of various mixed ways on burner characteristics was studied by contrast experiment. A new type of burner was developed, which can obtain good effect via industrial test and trial. It shows that the consumption of combustion air in the new type of burner reduces significantly, the combustion state is proved in good condition, and the heat transfer characteristics of conversion tubes are improved; furnace temperature and transformation temperature increase significantly without adding fuels, the exhaust gas temperature and oxygen consumption of the secondary reformer are reduced, and the efficiency of methane conversion is improved, thus the output of ammonia is increased by 5 700 t/a.