Preparation and industrial application of MnO<italic style="font-style: italic"><sub>x</sub></italic> particle catalyst for low temperature denitration

ZHANG Xiaoling; BAO Jianing; LI Yunjia; HUANGFU Lin; LI Wensong; GAO Shiqiu; XU Guangwen; LI Changming; YU Jian

doi:10.11949/0438-1157.20200234

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Preparation and industrial application of MnO_x particle catalyst for low temperature denitration

Catalysis\, kinetics and reactors | 更新时间：2026-07-24

- Preparation and industrial application of MnO_x particle catalyst for low temperature denitration
- CIESC Journal Vol. 71, Issue 11, Pages: 5169-5177(2020)
- 作者机构：
  
  1.中国科学院大学化学与化工学院，北京 100049
  2.中国科学院过程工程研究所多相复杂系统国家重点实验室，北京 100190
  3.湘潭大学化工学院，湖南湘潭 411105
  4.沈阳化工大学，辽宁沈阳 110142
  5.约翰斯∙霍普金斯大学环境健康与工程系，美国马里兰州巴尔的摩市 21287
- 作者简介：
- 基金信息：
- DOI：10.11949/0438-1157.20200234
  CLC： TQ 137.1
- Received：05 March 2020，
  
  Revised：2020-05-17，
  
  Online First：03 November 2020，
  
  Published：05 November 2020
- 稿件说明：
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张霄玲, 鲍佳宁, 李运甲, 皇甫林, 李文松, 高士秋, 许光文, 李长明, 余剑. 工业MnO_x颗粒催化剂的制备及其低温脱硝应用研究[J]. 化工学报, 2020, 71(11): 5169-5177 DOI: 10.11949/0438-1157.20200234.

ZHANG Xiaoling, BAO Jianing, LI Yunjia, HUANGFU Lin, LI Wensong, GAO Shiqiu, XU Guangwen, LI Changming, YU Jian. Preparation and industrial application of MnO_x particle catalyst for low temperature denitration[J]. CIESC Journal, 2020, 71(11): 5169-5177 DOI: 10.11949/0438-1157.20200234.
张霄玲, 鲍佳宁, 李运甲, 皇甫林, 李文松, 高士秋, 许光文, 李长明, 余剑. 工业MnO_x颗粒催化剂的制备及其低温脱硝应用研究[J]. 化工学报, 2020, 71(11): 5169-5177 DOI: 10.11949/0438-1157.20200234. DOI：

ZHANG Xiaoling, BAO Jianing, LI Yunjia, HUANGFU Lin, LI Wensong, GAO Shiqiu, XU Guangwen, LI Changming, YU Jian. Preparation and industrial application of MnO_x particle catalyst for low temperature denitration[J]. CIESC Journal, 2020, 71(11): 5169-5177 DOI: 10.11949/0438-1157.20200234. DOI：

摘要

以工业硫酸锰为前体，通过沉淀、洗涤、挤出、煅烧步骤批量制备了高活性颗粒状低温MnO

脱硝催化剂（

5 mm×30 mm）。针对天然气冷热电三联供高含水低含硫烟气开展应用示范，研究催化剂在不同工况下的脱硝性能与长周期活性稳定性，结果表明：在入口NO

浓度850~1000 mg/m³、床层温度145~175℃、空速4405 h

-1

工况条件下，脱硝率达到87.88%～97.47%，连续运行1180 h后脱硝效率有约3%的微弱衰减。对长周期运行后催化剂进行取样，进行XRD、BET、SEM表征及活性测试结果表明：该催化剂在该高湿烟气长时间运行中发生了一定程度的晶型转变，颗粒烧结、尺寸变大以及比表面积降低，导致其脱硝活性降低。该研究结果将为高活性锰基催化剂的制备及其低温脱硝工业应用提供参考和借鉴。

Abstract

Powder nano-manganese oxide (MnO

) material with excellent low-temperature denitration activity was prepared by precipitation-calcination method with manganese sulfate as precursor. The industrial catalyst of

5 mm×30 mm granular MnO

was successfully produced by continuous extrusion molding technology. The produced industrial catalyst was applied in the denitration purification of low-temperature flue gas from cold

hot

electric triple supply(CCHP) system on the conditions of 5000 m

/h gas flow

850—1000 mg/m

inlet NO

and the temperature from 145 to175℃. The NO conversion can achieve to 87.88%—97.47% under the GHSV of 4405 h

-1

and 3% decline of denitration efficiency was observed after use for 1180 hours. The laboratory test also confirmed the reduced activity for the used sample. Moreover

XRD

BET and SEM results showed the crystal transition

increased particle size and decreased surface area for the used MnO

sample

which accounted for the observed decline of denitration efficiency after long term use on the industrial conditions. The results of this study will provide references for the preparation of highl

y active manganese-based catalysts and their industrial application in low-temperature denitrification.

关键词

Keywords

references

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⁰

Preparation and industrial application of MnOx particle catalyst for low temperature denitration

DOI：10.11949/0438-1157.20200234

摘要

Abstract

关键词

Keywords

references

Preparation and industrial application of MnO_x particle catalyst for low temperature denitration