The honeycomb CuCl<sub>2</sub>/SCR catalyst: preparation and its mercury removal performance

CHENG Guangwen; YANG Song; LIU Wenjuan; GUO Zhongxu; FU Kangli

doi:10.19666/j.rlfd.201907151

English Version Reader LoginJournal Login

您当前的位置：

首页 >

文章列表页 >

The honeycomb CuCl₂/SCR catalyst: preparation and its mercury removal performance

更新时间：2025-09-28

- The honeycomb CuCl₂/SCR catalyst: preparation and its mercury removal performance
- Thermal Power Generation Vol. 48, Issue 12, Pages: 52-57(2019)
- 作者机构：
  
  西安热工研究院有限公司
- 作者简介：
- 基金信息：
- DOI：10.19666/j.rlfd.201907151
  CLC： TQ534.9
- Published Online：31 December 2019，
  
  Published：2019
- 稿件说明：
移动端阅览
CHENG Guangwen, YANG Song, LIU Wenjuan, et al. The honeycomb CuCl₂/SCR catalyst: preparation and its mercury removal performance[J]. Thermal power generation, 2019, 48(12): 52-57.
DOI：

CHENG Guangwen, YANG Song, LIU Wenjuan, et al. The honeycomb CuCl₂/SCR catalyst: preparation and its mercury removal performance[J]. Thermal power generation, 2019, 48(12): 52-57. DOI： 10.19666/j.rlfd.201907151.

摘要

本文以CuCl_2为活性组分

制备了一种蜂窝状SCR脱汞催化剂单体CuCl_2/SCR

并研究了制备工艺及催化剂在真实烟气中对元素汞的催化氧化性能。具体制备工艺为:先在助剂KCl的作用下将脱汞活性组分CuCl_2负载在g-Al_2O_3上形成复合粉末CuCl_2-KCl/g-Al_2O_3

再将CuCl_2-KCl/g-Al_2O_3作为一个整体组分加入传统SCR脱硝催化剂混料工艺中

同时用四甲基氢氧化铵代替氨水调节混料pH值

然后挤出、干燥、煅烧。结果表明:在真实烟气条件下

所得催化剂单体对元素汞的催化氧化效率在75%左右;助剂KCl可防止CuCl_2因高温挥发而流失;CuCl_2在催化剂中以铝酸铜和表面氯化铜2种形式存在

且均对元素汞表现出催化氧化活性;用四甲基氢氧化铵调节p H值可避免CuCl_2因铜氨反应而失效。

Abstract

A honeycomb catalyst for mercury removal

CuCl_2/SCR

was prepared. The preparation of CuCl_2/SCR was similar to that of the commercial SCR catalyst

the differences lied in the addition manner of active component and the pH adjusting agent. A composite powder was firstly obtained through loading CuCl_2 in γ-Al_2O_3 in the presence of KCl

and then the powder as an integral component was added into the mixing process. Meanwhile

choosing tetramethyl ammonium hydroxide as the pH adjusting agent instead of aqueous ammonia. These changes helped to obtain a honeycomb CuCl_2/SCR catalyst. Moreover

the catalytic oxidation performance of the above preparation process and catalyst on elemental mercury in real flue gas was also studied. The results showed that

in real flue gas

the CuCl_2/SCR catalyst showed a catalytic efficiency of about 75% for Hg~0 oxidation. The aid agent KCl could prevent CuCl_2 from volatilizing at high temperature in the catalyst

where CuCl_2 existed in the form of skeleton copper and surface copper. The two kinds of copper both showed catalytic activity for Hg~0 oxidation. The use of tetramethyl ammonium hydroxide could avoid the deactivity of CuCl_2/SCR resulting from the copper ammonia reaction.

关键词

Keywords

references

Views

148

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

TEST STUDY ON GAS-PHASE MERCURY REMOVAL BY USING Ca-BASED ABSORBENT

APPLICATION OF COOL,HEAT,AND ELECTRICITY TRIPLE CO-GENERATION BASED ON NATURAL GAS IN INDUSTRIAL SECTOR

Experimental study on elemental mercury adsorption by novel nano-sorbents

Experimental study on mercury removal by oxidation in a coal-fired boiler

Review on application of hydrogen peroxide oxidation system in desulfurization,denitrification and mercury removal for coal-fired flue gas

Related Author

CEN Ke-faZhejiang University

LUO Zhong-yang

CHEN Xiang-wen

HE Sheng

GAO Xiang

ZHOU Jin-song

LIU Hai-jiao

HUA Ben21.Department of Applied Physics

Related Institution

4:浙江大学

3:浙江大学

浙江大学

Zhejiang University

Key Laboratory of Enhanced Heat Transfer and Process Energy Conservation, Ministry of Education

AI问答

⁰

The honeycomb CuCl2/SCR catalyst: preparation and its mercury removal performance

DOI：10.19666/j.rlfd.201907151

摘要

Abstract

关键词

Keywords

references

The honeycomb CuCl₂/SCR catalyst: preparation and its mercury removal performance