燃煤电厂碳酸氢铵固体热解制氨系统研究Study on ammonium bicarbonate solid pyrolysis system for ammonia production in coal-fired power plants
蒙毅,刘逸芸,宋士林,刘玺璞
摘要(Abstract):
碳酸氢铵固体是一种潜在的脱硝还原剂,可以通过固体直接热解高效制取氨气。通过数值计算模拟了碳酸氢铵固体热解反应,并设计了适用于燃煤电厂的热解制氨系统,分析了碳酸氢铵热解制氨过程的经济性。模拟结果显示,碳酸氢铵热解过程适宜在常压下进行,反应温度在100℃以上时热解转化率迅速提高。对660 MW机组的碳酸氢铵热解系统进行了设计计算,采用外热式热解反应器以实现余热利用和固体稳定进料,利用燃煤电厂蒸汽或烟气作为热解热源,在110℃时碳酸氢铵进料在10 min内可以达到95%转化率。相比尿素水解制氨工艺,碳酸氢铵固体热解工艺的设备成本、占地面积和运行费用均显著降低,具有良好的推广应用前景。
关键词(KeyWords): 碳酸氢铵;固体热解;制氨;模拟;燃煤电厂
基金项目(Foundation): 中国华能集团有限公司总部科技项目(HNKJ22-H124)~~
作者(Author): 蒙毅,刘逸芸,宋士林,刘玺璞
DOI: 10.19666/j.rlfd.202502010
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