Analysis on the Optimization Technology of Precise Ammonia Injection in SCR Denitration System

Zishang LI; Renhan ZHU; Zhen DU

doi:10.12096/j.2096-4528.pgt.20035

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Analysis on the Optimization Technology of Precise Ammonia Injection in SCR Denitration System

Power Generation and Environmental Protection | 更新时间：2025-07-04

- Analysis on the Optimization Technology of Precise Ammonia Injection in SCR Denitration System
- Power Generation Technology Vol. 42, Issue 5, Pages: 630-636(2021)
- 作者机构：
  
  1.长沙矿冶研究院有限责任公司, 湖南省长沙市 410012
  2.中国华电集团有限公司福建分公司, 福建省福州市 350002
  3.华电电力科学研究院有限公司, 浙江省杭州市 310030
- 作者简介：
- 基金信息：
- DOI：10.12096/j.2096-4528.pgt.20035
  CLC： TK47
- Received：06 July 2020，
  
  Published：31 October 2021
- 稿件说明：
移动端阅览
Zishang LI, Renhan ZHU, Zhen DU. Analysis on the Optimization Technology of Precise Ammonia Injection in SCR Denitration System[J]. Power Generation Technology, 2021, 42(5): 630-636.
DOI：

Zishang LI, Renhan ZHU, Zhen DU. Analysis on the Optimization Technology of Precise Ammonia Injection in SCR Denitration System[J]. Power Generation Technology, 2021, 42(5): 630-636. DOI： 10.12096/j.2096-4528.pgt.20035.

摘要

为提高选择性催化还原（selective catalytic reduction，SCR）脱硝系统的运行水平，通过分析现有SCR脱硝控制系统的技术特点发现，测试仪表的滞后性是影响脱硝喷氨控制准确性和实时性的直接因素。为此，提出了脱硝系统精准喷氨的优化控制技术，将喷氨总量控制、分区喷氨控制和NO

浓度场精准测量等技术有机结合，构建以总量控制、分区喷氨调整、NO

浓度场精准测量前馈为主要手段的精准喷氨控制策略，从而提高喷氨控制的准确性和实时性，进一步降低脱硝系统的运行成本，减小氨逃逸的影响，为下一步精准喷氨优化技术的应用提供技术支撑。

Abstract

In order to improve the operation level of selective catalytic reduction (SCR) denitration system

through the analysis of the technical characteristics of the existing control system of SCR denitration

it was found that the delay of existing test instruments is the direct factor affecting the accuracy and real-time performance of the denitration ammonia injection control. To improve the accuracy and real-time performance of ammonia injection control

the optimization control technology of precise ammonia injection in denitration system was proposed. Moreover

the technologies of the total amount control of ammonia injection

divisional ammonia injection control and precise measurement of NO

concentration field were organically combined to build a precise ammonia injection control strategy with total amount control

subarea ammonia injection adjustment and NO

concentration field precise measurement feedforward as the main means. This work is benefit to reduce the operation cost of denitration system and weaken the impact of escaping ammonia

and provides the technical support for the applicatio

n of the next precise ammonia injection optimization technology.

关键词

Keywords

references

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