摘要
目前国内常用选择性催化剂还原法(SCR)去除燃煤电厂尾气中的氮氧化物(NOx)。通过尿素制备SCR还原剂NH3,可以克服液氨易爆炸、氨含量低和体积大等缺陷,近年来备受关注。尿素制氨通常有尿素水解制氨和尿素热解制氨两种方案。本文总结了尿素制氨的各类工艺不同特点,并预测尿素制氨工艺的未来发展方向。
Recently, the selective catalyst reduction method (SCR) is commonly used to remove nitrogen oxides (NOx) from exhaust gas of coal-fired power plants. Ammonia production from urea can overcome defects of liquid ammonia with easy to explode, low ammonia content and large volume, and has aroused widespread interest in recent years. There are usually two ways to produce ammonia from urea: urea hydrolysis and urea pyrolysis. The different characteristics of various processes for ammonia production from urea are summarized in the paper, and the future development direction of urea ammonia production process is predicted.
出处
《物理化学进展》
CAS
2022年第4期226-233,共8页
Journal of Advances in Physical Chemistry
