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不同烟气组分对粉状活性焦吸附汞的影响机理
能源和环境工程 | 更新时间：2026-07-24
|
不同烟气组分对粉状活性焦吸附汞的影响机理
Effect mechanisms of different flue gas on adsorption of mercury by powder activated coke
- 化工学报 2019年70卷第4期 页码：1575-1582
- 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：
安东海（1988—），男，博士研究生， adhcjxy@163.com
程星星（1984—），女，博士，副教授，xcheng@sdu.edu.cn
董勇（1967—），男，博士，教授，dongy@sdu.edu.cn
- 基金信息：国家重点研发计划项目(2017YFF0209803)
DOI：10.11949/j.issn.0438-1157.20181278
中图分类号： TQ 028.8收稿：2018-10-31，
修回：2018-12-22，
网络首发：2020-06-15，
纸质出版：2019-04-12
- 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.
不同烟气组分对粉状活性焦吸附汞的影响机理
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
0
的吸附能力，探索了SO
2
、H
2
O、O
2
、CO
2
、H
2
O+O
2
、SO
2
+O
2
及H
2
O+SO
2
+O
2
气氛对活性焦吸附Hg
0
的影响机理。结果表明：一步法获得的活性焦对Hg
0
具有较高的吸附性能。N
2
气氛作对比，H
2
O、H
2
O+O
2
、CO
2
和SO
2
气氛下抑制活性焦对Hg
0
的吸附；O
2
、SO
2
+O
2
和H
2
O+SO
2
+O
2
促进活性焦对Hg
0
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
0
的抑制和促进机理。H
2
O覆盖在活性焦活性位上和堵塞孔隙而抑制活性焦对Hg
0
的吸附；SO
2
与Hg
0
在活性焦上发生竞争吸附而抑制对Hg
0
的吸附；CO
2
吸附在活性焦微孔上而抑制对Hg
0
的吸附；O
2
气氛下主要形成了HgO
SO
2
+O
2
气氛下Hg
0
被氧化成HgSO
3
，进一步氧化成HgSO
4
； H
2
O+SO
2
+O
2
气氛下，Hg
0
被氧化成HgO和HgSO
4
。
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
0
was investigated. Further
the effects of SO
2
H
2
O
O
2
CO
2
H
2
O+O
2
SO
2
+O
2
and H
2
O+SO
2
+O
2
on Hg
0
removal efficiency were examined in flue gas. The results indicate that the coke has high adsorption performance for Hg
0
removal. The N
2
atmosphere was used as comparison
the O
2
SO
2
+O
2
and H
2
O+SO
2
+O
2
are beneficial for Hg
0
removal
while the H
2
O
CO
2
SO
2
and H
2
O+O
2
have inhibiting effect on Hg
0
removal. Furthermore
the spectra of Hg 4f were determined by XPS
in order to explore the mechanism of inhibition and promotion of Hg
0
adsorption by activated coke under different flue gas. H
2
O can inhibit the adsorption of active coke on Hg
0
via
covering the active coke sites and blocking the pores
SO
2
can inhibit the adsorption through the competitive adsorption of SO
2
and HgO on the active coke
and CO
2
that adsorbed on the active coke micropore also can inhibit the adsorption of active coke on Hg
0
. In the atmosphere of O
2
and SO
2
+O
2
the Hg
0
is oxidized into HgO and HgSO
3
separately. And the HgSO
3
further oxidized into HgSO
4
by O
2
. Besides
in the atmosphere of H
2
O+SO
2
+O
2
Hg
0
is oxidized into HgO and HgSO
4
.
关键词
Keywords
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