Carbon consumption of activated coke in the thermal regeneration process for flue gas desulfurization and denitrification
文献类型：期刊论文
| 作者 | Li, Yuran1; Lin, Yuting1; Wang, Bin1; Ding, Song1; Qi, Feng1; Zhu, Tingyu1,2 |
| 刊名 | JOURNAL OF CLEANER PRODUCTION
 |
| 出版日期 | 2019-08-10 |
| 卷号 | 228页码:1391-1400 |
| 关键词 | Activated coke Thermal regeneration Carbon consumption Desulfurization Denitrification Flue gas |
| ISSN号 | 0959-6526 |
| DOI | 10.1016/j.jclepro.2019.04.225 |
| 英文摘要 | In the process of flue gas purification with activated coke, sulfuric acid and sulfate are deposited on the activated coke surface; therefore, thermal regeneration is needed to recover the activated coke activity, which leads to carbon consumption. In this work, various regeneration parameters, including temperature, time and atmosphere, were investigated to optimize carbon consumption. The experimental results showed that the desulfurization capacity of the activated coke was clearly improved after thermal regeneration, while the denitrification capacity demonstrated no obvious or regular changes. Based on dozens of groups of regeneration experiments, it was found that the chemical carbon consumption per mol SO2 recovery ranged from 0.5 to 2.0 mol, which was higher than the theoretical value of 0.5 mol. The proportion of CO2 in chemical carbon consumption ranged from 60%-80% with an average value of 70%, and the rest was CO. According to the results from temperature-programmed desorption (TPD), CO and CO2 consumption was mainly derived from the decomposition of carboxyl and anhydride groups, with a small contribution from the reduction reaction of sulfuric acid with carbon. CO and CO2 consumption occupied only 10%-18% of the total carbon-containing functional groups, so the reaction activity was retained after thermal regeneration. The carbon consumption in an NH3/N-2 atmosphere was smaller than that in a N-2 atmosphere, which was about half of that in a H2O/N-2 atmosphere due to the inhibition of carboxyl group decomposition, based on the results from TPD and in situ diffuse reflectance infrared Fourier transform (In situ DRIFT). Analysis of the thermal regeneration process in four iron and steel factories revealed that the chemical carbon consumption of activated coke accounted for approximately 20%-40% of the total carbon consumption, which was smaller than the contribution from physical carbon abrasion. (C) 2019 Elsevier Ltd. All rights reserved. |
| WOS关键词 | SELECTIVE CATALYTIC-REDUCTION ; NO ; ADSORPTION ; REMOVAL ; NH3 ; PERFORMANCE ; SO2 |
| 资助项目 | National Key R&D Program of China[2017YFC0210203] ; National Natural Science Foundation of China[U1810209] ; Beijing Science and Technology Project[D161100004516001] |
| WOS研究方向 | Science & Technology - Other Topics ; Engineering ; Environmental Sciences & Ecology |
| 语种 | 英语 |
| WOS记录号 | WOS:000470947000115 |
| 出版者 | ELSEVIER SCI LTD |
| 资助机构 | National Key R&D Program of China ; National Natural Science Foundation of China ; Beijing Science and Technology Project |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/29865]  |
| 专题 | 中国科学院过程工程研究所 |
| 通讯作者 | Li, Yuran; Zhu, Tingyu |
| 作者单位 | 1.Chinese Acad Sci, Natl Engn Lab Hydromet Cleaner Prod Technol, Beijing Engn Res Ctr Proc Pollut Control, Inst Proc Engn, Beijing 100190, Peoples R China 2.Chinese Acad Sci, Inst Urban Environm, Ctr Excellence Reg Atmospher Environm, Xiamen 361021, Fujian, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, Yuran,Lin, Yuting,Wang, Bin,et al. Carbon consumption of activated coke in the thermal regeneration process for flue gas desulfurization and denitrification[J]. JOURNAL OF CLEANER PRODUCTION,2019,228:1391-1400. |
| APA | Li, Yuran,Lin, Yuting,Wang, Bin,Ding, Song,Qi, Feng,&Zhu, Tingyu.(2019).Carbon consumption of activated coke in the thermal regeneration process for flue gas desulfurization and denitrification.JOURNAL OF CLEANER PRODUCTION,228,1391-1400. |
| MLA | Li, Yuran,et al."Carbon consumption of activated coke in the thermal regeneration process for flue gas desulfurization and denitrification".JOURNAL OF CLEANER PRODUCTION 228(2019):1391-1400. |
入库方式： OAI收割
来源：过程工程研究所
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