Effect mechanisms of different flue gas on adsorption of mercury by powder activated coke

AN Donghai; HAN Xiaolin; CHENG Xingxing; ZHOU Binxuan; ZHENG Ying; DONG Yong

doi:10.11949/j.issn.0438-1157.20181278

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Effect mechanisms of different flue gas on adsorption of mercury by powder activated coke

Energy and environmental engineering | 更新时间：2026-07-24

- Effect mechanisms of different flue gas on adsorption of mercury by powder activated coke
- CIESC Journal Vol. 70, Issue 4, Pages: 1575-1582(2019)
- 作者机构：
  
  1.山东大学燃煤污染物减排国家工程实验室，山东济南250061
  2.华中科技大学煤燃烧国家重点实验室, 湖北武汉430074
  3.神华新疆能源有限责任公司，新疆乌鲁木齐 830027
- 作者简介：
- 基金信息：
- DOI：10.11949/j.issn.0438-1157.20181278
  CLC： TQ 028.8
- Received：31 October 2018，
  
  Revised：2018-12-22，
  
  Online First：15 June 2020，
  
  Published：12 April 2019
- 稿件说明：
移动端阅览
安东海, 韩晓林, 程星星, 周滨选, 郑瑛, 董勇. 不同烟气组分对粉状活性焦吸附汞的影响机理[J]. 化工学报, 2019, 70(4): 1575-1582

AN Donghai, HAN Xiaolin, CHENG Xingxing, ZHOU Binxuan, ZHENG Ying, DONG Yong. Effect mechanisms of different flue gas on adsorption of mercury by powder activated coke[J]. CIESC Journal, 2019, 70(4): 1575-1582
安东海, 韩晓林, 程星星, 周滨选, 郑瑛, 董勇. 不同烟气组分对粉状活性焦吸附汞的影响机理[J]. 化工学报, 2019, 70(4): 1575-1582 DOI： 10.11949/j.issn.0438-1157.20181278.

AN Donghai, HAN Xiaolin, CHENG Xingxing, ZHOU Binxuan, ZHENG Ying, DONG Yong. Effect mechanisms of different flue gas on adsorption of mercury by powder activated coke[J]. CIESC Journal, 2019, 70(4): 1575-1582 DOI： 10.11949/j.issn.0438-1157.20181278.

摘要

在模拟燃煤热烟气为热源和介质条件下，以准东褐煤为原料，通过一维沉降炉进行炭化活化（一步法）制备粉状活性焦，考察了活性焦对Hg

的吸附能力，探索了SO

、H

O、O

、CO

、H

O+O

、SO

及H

O+SO

气氛对活性焦吸附Hg

的影响机理。结果表明：一步法获得的活性焦对Hg

具有较高的吸附性能。N

气氛作对比，H

O、H

O+O

、CO

和SO

气氛下抑制活性焦对Hg

的吸附；O

、SO

和H

O+SO

促进活性焦对Hg

的吸附。通过Hg 4f的XPS分析证明了不同气氛组成对活性焦吸附Hg

的抑制和促进机理。H

O覆盖在活性焦活性位上和堵塞孔隙而抑制活性焦对Hg

的吸附；SO

与Hg

在活性焦上发生竞争吸附而抑制对Hg

的吸附；CO

吸附在活性焦微孔上而抑制对Hg

的吸附；O

气氛下主要形成了HgO

气氛下Hg

被氧化成HgSO

，进一步氧化成HgSO

； H

O+SO

气氛下，Hg

被氧化成HgO和HgSO

。

Abstract

Under the condition of simulating coal-fired hot flue gas as heat source and medium

quasi-east lignite was used as raw material to carry out carbonization activation (one-step method) to prepare powdery activated coke by one-dimensional settling furnace

and the adsorption capacity of activated coke to Hg

was investigated. Further

the effects of SO

O+O

and H

O+SO

on Hg

removal efficiency were examined in flue gas. The results indicate that the coke has high adsorption performance for Hg

removal. The N

atmosphere was used as comparison

the O

and H

O+SO

are beneficial for Hg

removal

while the H

and H

O+O

have inhibiting effect on Hg

removal. Furthermore

the spectra of Hg 4f were determined by XPS

in order to explore the mechanism of inhibition and promotion of Hg

adsorption by activated coke under different flue gas. H

O can inhibit the adsorption of active coke on Hg

via

covering the active coke sites and blocking the pores

can inhibit the adsorption through the competitive adsorption of SO

and HgO on the active coke

and CO

that adsorbed on the active coke micropore also can inhibit the adsorption of active coke on Hg

. In the atmosphere of O

and SO

the Hg

is oxidized into HgO and HgSO

separately. And the HgSO

further oxidized into HgSO

by O

. Besides

in the atmosphere of H

O+SO

is oxidized into HgO and HgSO

关键词

Keywords

references

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