Emission of coal-fired VOCs and prospect of control technology

doi:10.16085/j.issn.1000-6613.2019-0380

Abstract

Abstract:

The emission of volatile organic compounds(VOCs) is an important inducement to compound atmospheric pollution, haze and photochemical smog，which is in hotspot. Coal combustion is one of the VOCs sources. In this paper, the emission performance of coal-fired VOCs was summarized, including main species and emission concentration of coal-fired VOCs, factors affecting the coal-fired VOCs formation. It is believed that coal-fired VOCs has lower concentration and benzenes are its important components. In addition, the migration and transformation of VOCs in flue gas system were analyzed. The synergy that air pollution control devices (SCR、WFGD、ESP、WESP、low-low temperature ESP) eliminate VOCs was also introduced. In conclusion，according to the research status of adsorption and catalytic oxidation methods，the research prospect on this field was also given. Combining with the synergistic removal of existing APCDs, optimizing the process conditions, developing a technology integrating efficient adsorption/oxidation/flue gas synergistic purification technology, are expected to be an efficient way to control coal-fired VOCs.

Key words: coal combustion, volatile organic compounds (VOCs), adsorption, oxidation, synergetic control

摘要：

有机污染物排放是导致大气复合型污染、诱发雾霾、产生光化学烟雾的重要诱因，是当前研究的热点问题。燃煤是有机污染物的来源之一。本文综述了燃煤有机污染物的排放特性，包括燃煤有机物的排放浓度及主要组分，影响燃煤有机物生成的因素，指出燃煤有机污染物浓度较低，苯系物是其重要组成之一。分析了烟气系统中有机物的迁移转化以及烟气处理设施（选择性催化还原脱硝、湿法脱硫、电除尘、湿式电除尘、低低温电除尘）的协同去除作用。最后基于吸附技术和催化技术的研究现状，展望了未来燃煤有机污染物控制的研究方向为：结合现有设备的协同去除作用，优化工艺条件，开发适合燃煤有机物的高效吸附剂和催化剂，开发集高效吸附/氧化/烟气协同净化技术于一体的燃煤有机物高效控制技术。

关键词: 煤燃烧, 有机污染物, 吸附, 氧化, 协同治理

CLC Number:

X511

Jinjin LI,Feiran CHEN,Xiuwei MA,Zhi ZHANG,Linjun YANG. Emission of coal-fired VOCs and prospect of control technology[J]. Chemical Industry and Engineering Progress, 2019, 38(12): 5539-5547.

李津津,陈扉然,马修卫,张智,杨林军. 燃煤有机污染物排放及其控制技术研究展望[J]. 化工进展, 2019, 38(12): 5539-5547.

Figures/Tables 2

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