氨燃料经济性分析及煤氨混燃研究进展  

Economic Analysis of Ammonia and Research Progress of Coal-ammonia Co-firing

作　　者：谭厚章 周上坤 杨文俊 崔保崇 邓双辉 王金华[1] 王学斌[1] TAN Houzhang;ZHOU Shangkun;YANG Wenjun;CUI Baochong;DENG Shuanghui;WANG Jinhua;WANG Xuebin(MOE Key Laboratory of Thermo-Fluid Science and Engineering(Xi’an Jiaotong University),Xi’an 710049,Shaanxi Province,China)

机构地区：[1]热流科学与工程教育部重点实验室(西安交通大学),陕西省西安市710049

出　　处：《中国电机工程学报》2023年第1期181-190,共10页Proceedings of the CSEE

基　　金：国家重点研发计划(2020YFC1910000);中央高校基本科研业务费专项资金(xzy022021027)。

摘　　要：氨能作为氢能的重要补充,近来获得了越来越多的关注。双碳政策与煤价高企使燃煤电厂面临极大的生存压力。使用新能源弃电生产绿氨替代部分煤炭可以减少燃煤电厂的碳排放,使燃煤电厂向煤氨混燃的储能调峰电厂转型。该文对氨燃料的生产、储存、运输成本进行详细的经济性分析,对工业锅炉中煤氨混燃的关键技术(如氨气的喷射位置、旋流煤粉燃烧器的改造)提出相应的总结和建议。最后,对电站锅炉掺烧氨气的NOx排放和飞灰含碳情况进行针对性的预测:掺烧氨气通常有利于降低飞灰含碳量,氨气对焦炭生成NOx的抑制与未燃尽氨气向NOx转化的竞争机制决定了工业锅炉以及电站锅炉中NOx排放。通过合理的措施可以同时实现飞灰含碳量的降低以及NOx生成的控制。Ammonia energy as an important supplement to hydrogen energy has recently received more and more attention. The dual-carbon policy and high coal prices put coal-fired power plants under great pressure to survive. Using abandoned electricity from renewable energy to produce green ammonia for replacing part of coal can reduce the carbon emissions of coal-fired power plants and transform the coal-fired power plants into energy storage and peak regulation power plants. This work conducts a detailed economic analysis of the production, storage, transportation of ammonia. The key technologies and challenges of the co-firing of ammonia and coal in industrial boilers are also summarized. Recommendations for ammonia injection position and the modification of the swirl pulverized coal burner are made. The NOxemissions and unburnt carbon in fly ash of power station boilers with ammonia blended are predicted. The addition of NH3usually helps to reduce the carbon content of fly ash. The competitive mechanism between the inhibition effect of NH3on NOxproduction of char oxidation and the production effect of unburned NH3on NOxproduction determines the NOxemission in industrial boilers and power station boilers. Through reasonable measures, the carbon content in fly ash can be reduced and NOxproduction can be controlled at the same time.

关 键 词：煤氨混燃 经济性分析 NOX排放 飞灰含碳 

分 类 号：TK91[动力工程及工程热物理]