| 废SCR催化剂中的污染物及环境风险分析 |
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| 引用本文： | 周安慧,邱兆富,杨骥,严瑞琪,卞晓彤.废SCR催化剂中的污染物及环境风险分析[J].无机盐工业,2021,53(2):11-16. |
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| 作者姓名： | 周安慧 邱兆富 杨骥 严瑞琪 卞晓彤 |
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| 作者单位： | 1.华东理工大学资源与环境工程学院,上海 2002372.国家环境保护化工过程环境风险评价与控制重点实验室 |
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| 基金项目： | 国家环境保护公益性行业科研专题项目(201309021)。 |
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| 摘 要： | 中国氮氧化物（NOx）排放量中约有70%源自煤的燃烧,而且随着环保力度的逐渐加大及大气污染物的排放标准要求逐年提高,控制燃煤电厂NOx的排放成为当务之急 。中国普遍采用选择性催化还原法（SCR）作为燃煤尾气脱硝的方法,由此导致废SCR催化剂的产量逐年上升,预计2020年中国废SCR产生量将达到19万m3。虽然中国目前已经开展了废SCR催化剂资源化与无害化的研究,但是关于废SCR催化剂的环境风险评价却鲜有报道。概述了SCR催化剂的成分、催化原理以及废SCR催化剂的产生原因,介绍了废SCR催化剂中的主要污染物及其对环境的危害,同时简要分析了废SCR催化剂存在的环境风险及其评价方法,为中国废SCR催化剂的资源化和处理处置提供了有益参考。
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| 关 键 词： | 废SCR催化剂 失活 污染物 重金属 环境风险 |
| 收稿时间： | 2020-08-15 |
Analysis of pollutants and environmental risk in spent SCR catalyst |
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| Zhou Anhui,Qiu Zhaofu,Yang Ji,Yan Ruiqi,Bian Xiaotong.Analysis of pollutants and environmental risk in spent SCR catalyst[J].Inorganic Chemicals Industry,2021,53(2):11-16. |
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| Authors: | Zhou Anhui Qiu Zhaofu Yang Ji Yan Ruiqi Bian Xiaotong |
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| Affiliation: | 1. School of Resources and Environmental Engineering,East China University of Science and Technology,Shanghai 200237,China2. State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process |
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| Abstract: | About 70%of China′s nitrogen oxides(NOx)emissions originate from coal combustion,and with the gradual increase in environmental protection and the increase in the requirements of air pollutant emissions standards,the control of NOx emissions from coal-fired power plants has become an urgent task.The selective catalytic reduction(SCR)method is widely used in China as a method for denitrification of coal-fired exhaust gas,which has led to an increase year by year in the output of spent SCR catalysts.It is expected that China′s waste SCR generation will reach 1.9×10^5 m^3 in 2020.Although the research on resource utilization and harmlessness of waste SCR catalysts has been carried out in China,there are few reports on environmental risk assessment of waste SCR catalysts.The composition of SCR catalysts,their catalytic principles and the causes of waste SCR catalysts were outlined.Then,the main pollutants in waste SCR catalysts and their harm to the environment were introduced.At the same time,the environmental risks of waste SCR catalysts and their evaluation methods were briefly analyzed.The useful reference for the recycling and treatment of waste SCR catalyst in China was provided. |
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| Keywords: | spent SCR catalyst inactivation pollutant heavy metal environmental risk |
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