摘要
基于CFD软件平台，对燃烧研究设备（combustion research facility，CRF）中试试验装置的选择性非催化还原（selective non—catalytic reduction，SNCR）脱硝过程进行模拟计算，通过与试验结果的比较，验证了该文的数学模型和计算方法。文中研究了在不同的温度、氨氮摩尔比条件下，喷射尿素溶液对脱硝效率和漏失氨的影响。计算结果表明，随着[NH3]／[NO]的增加，NO的还原率逐渐提高，在[NH3]／[NO]为1．0-2．5时可以达到50％-90％的NO脱除效率。同时由于随着氨氮摩尔比的增加，漏失氨也随之增加，因而应合理控制氨氮摩尔比在1．5左右。
Based on the CFD software technology, the NOx removal process with selective non-catalytic reduction （SNCR） application, in a combustion research facility （CRF） thermal state test rig, was numerically simulated. The program included calculational models and methods developed in this study was successfully validated by comparing with the experimental data. How the injection of urea solution influenced the NOx removal efficiency and NH3 leak was studied with different temperature levels and varied molar ratio of NH3/NO. It is concluded that, the NO removal efficiency can be gradually increased, and even up to 50%-90%, while the molar ratio of NH3/NO ranged from 1.0 to 2.5. Since the NH3 leakage increased as the molar ratio of NH3/NO rising, it is better to control the molar ratio of NH3/NO at 1.5 or so.
出处
《中国电机工程学报》
EI
CSCD
北大核心
2008年第23期46-52,共7页
Proceedings of the CSEE
基金
国家863高技术基金项目(2007AA05Z337)~~
关键词
选择性非催化还原
数值计算
尿素
燃烧研究设备
selective non-catalytic reduction
numerical simulation
urea
combustion research facility
