某330MW机组SCR脱硝系统运行优化调整试验分析

Analysis on Operation Optimization Adjustment Test of SCR Denitrification System of a 330 MW Unit

通过对某330 MW机组选择性催化还原法(SCR)脱硝系统进行运行优化调整试验分析,阐述在不同负荷下的系统脱硝率、氨逃逸浓度、SO2/SO3转换率、系统入口烟气流场、系统阻力、系统温降及温度场等运行特性,为后期机组运行排放达到环保指标,提高脱硝效率并减少氨逃逸,实现对喷氨系统进行精确调整提供技术依据和必要的数据,也为其他SCR系统进行优化调整试验研究提供借鉴的思路。

The results of operation optimization adjustment test of SCR denitrification system in a 330 MW unit are analyzed, and the operating parameters such as denitrification efficiency, ammonia loss ratio, S02/S03 transfer ratio, system resistance, system temperature drop and temperature field under different operating loads are described. Based on the study, the relevant technical basis and necessary parameters are obtained to achieve the environmental protection index for unit emission ？ improve denitrification efficiency, realize more precise adjustment to ammonia injection system and decrease the ammonia loss ratio, which provides a reference for further research on optimization adjustment test of SCR system.