| 钢铁行业烧结烟气多污染物协同净化技术研究进展 |
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| 作者姓名： | 闫伯骏 邢奕 路培 苏伟 姜博 崔晓旭 |
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| 作者单位： | 北京科技大学能源与环境工程学院, 北京 100083;北京科技大学能源与环境工程学院, 北京 100083;工业污染物资源化处理北京市重点实验室, 北京 100083 |
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| 基金项目： | 国家自然科学基金资助项目(U1560110)中央高校基本科研业务费专项资助项目国家重点研发计划资助项目(2017YFC0210300) |
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| 摘 要： | 基于我国钢铁行业烧结烟气排放标准、排放特征和现行污染物控制技术,分析了国内外先进的多污染物协同控制技术——活性炭(焦)吸附工艺、湿法脱硫除尘+选择性催化还原协同净化技术、循环流化床多组分污染物协同净化工艺、高性能烧结废气净化工艺、新型密相半干法烟气集成治理技术等工艺的技术思路、特点和存在问题等,并针对钢铁行业的实际需求对多污染物协同控制技术的发展提出了建议.
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| 关 键 词： | 钢铁行业 烧结烟气 多污染物 协同净化 脱硫 脱硝 |
| 收稿时间： | 2017-07-04 |
A critical review on the research progress of multi-pollutant collaborative control technologies of sintering flue gas in the iron and steel industry |
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| Affiliation: | 1) School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, China2) Beijing Key Laboratory of Resource-oriented Treatment of Industrial Pollutants, University of Science and Technology Beijing, Beijing 100083, China |
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| Abstract: | The emission of flue gas in the iron and steel industry is high and contains a series of pollutants which that vary widely, especially in sintering process. With the depth of pollution control in China and the increasingly stringent emission standards, the flue gas pollutants of the steel industry require urgent management. At present, the sintering flue gas is mainly treated in the desulfurization and dust removal stages. Moreover, the measures for the management of nitrogen oxides and other pollutants have not yet been fully implemented in China's steel industry. Almost all the air pollution control techniques in the industry are aimed at single pollutant purification, where only few are targeted for multi-pollutant purification. Currently, the single pollutant treatment techniques can be divided into wet, semi-dry, and dry. Among them, the semi-dry and dry methods have gradually attracted much attention because of their high purification efficiency, compactness, and cost-effectiveness. Thus, they have become the main single pollutant treatment technologies for the sintering flue gas emission in the iron and steel industry. The present commonly used multi-pollutant removal technology is a single pollutant purification technique in series. With the increasingly stringent environmental standards in the steel industry, the original pollution control technologies and concepts have shown obvious deficiencies. This has seriously affected the development of China's iron and steel enterprises and smog management process. In addition, the tandem technology of single pollutant removal processes has the disadvantages of large area and high energy consumption. However, the simultaneous purification of multi-pollutants involves a simple process, short process flow, and low operation cost, and thus, it has become a research hotspot. Based on China's iron and steel industry sintering flue gas emission standards, emission characteristics, and current pollutant control technology, the technical ideas, characteristics and existing problems of multi-pollutant-coordinated control technology were analyzed, such as activated carbon adsorption process, LJS-FGD synergy pollutant purification process, MEROS technology, and a new type of dense semi-dry flue gas comprehensive management technology. Finally, some reasonable suggestions were presented for the development of multi-pollutants co-purification technology in the iron and steel industry. |
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