Deactivation prediction model for flue gas denitration catalyst V-W-TiO<sub>2</sub>

SHEN Boxiong; ZHANG Haohao; WU Hanming; JIANG Xiaoming; WANG Hu

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Deactivation prediction model for flue gas denitration catalyst V-W-TiO₂

更新时间：2025-09-28

- Deactivation prediction model for flue gas denitration catalyst V-W-TiO₂
- Thermal Power Generation Vol. 46, Issue 9, Pages: 24-30(2017)
- 作者机构：
  
  1. 河北工业大学能源与环境工程学院
  2. 大唐南京环保科技有限责任公司
- 作者简介：
- 基金信息：
- DOI：
  CLC： X773
- Published：2017
- 稿件说明：
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SHEN Boxiong, ZHANG Haohao, WU Hanming, et al. Deactivation prediction model for flue gas denitration catalyst V-W-TiO₂[J]. Thermal power generation, 2017, 46(9): 24-30.
DOI：

SHEN Boxiong, ZHANG Haohao, WU Hanming, et al. Deactivation prediction model for flue gas denitration catalyst V-W-TiO₂[J]. Thermal power generation, 2017, 46(9): 24-30. DOI：

摘要

针对燃煤电厂选择性催化还原(SCR)脱硝催化剂失活问题

在催化剂失活最主要的3个因素(化学中毒、孔道堵塞、飞灰磨损)基础上构建对应的失活函数。将电厂SCR烟气脱硝系统运行数据带入模型进行拟合

进而建立催化剂失活预测模型

得到模型中多种涉及失活的关键性参数。结果表明:毒性氧化物在催化剂上的沉积速率依次为K_2OCaONa_2OAs_2O_3

堵塞速率与飞灰的浓度及粒径分布有关;磨损系数与烟气流量、流速及飞灰颗粒性质有关;采用失活预测模型能较好预测催化剂实际失活的情况。

Abstract

Aiming at solving the deactivation problem of catalyst for SCR system in coal-fired power plant

based on three main factors affecting the catalyst deactivation: chemical poisoning

pore plugging and fly ash abrasion

the corresponding deactivation function was formulated.Then the prediction model for catalyst activity was established.The actual operation data of a power plant's SCR system were used in model fitting

and the key parameters of deactivation involved in the model were obtained.The results show that

the order of the toxic oxides' deposition rate is K_2OCaONa_2OAs_2O_3

and the blocking rate is related to the concentration and size distribution of the fly ash.The abrasion coefficient has a relationship with the flue gas flow and velocity as well as the fly ash particles' properties.This prediction model can well predict the catalyst deactivation in actual power plant.

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Deactivation prediction model for flue gas denitration catalyst V-W-TiO2

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摘要

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Deactivation prediction model for flue gas denitration catalyst V-W-TiO₂