Chlorine emission characteristics and control status of coal-fired units

Chlorine is a harmful trace element in coal. During coal combustion, the chlorine undergoes complex changes and transfers to the gas, and forms chlorine-containing substances. This paper summarizes the field test data of chlorine emission from domestic coal-fired units, and analyzes the chlorine emi...

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Autores principales:	Can Zhou, Wen Xi, Lei Yang, Bing Li
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2022
Materias:	Coal-fired unit Chlorine emission Dust removal facility Wet desulfurization facility Collaborative control Electrical engineering. Electronics. Nuclear engineering TK1-9971
Acceso en línea:	https://doaj.org/article/c9e9e546f29d4400826aa7b4127cceb6
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spelling	oai:doaj.org-article:c9e9e546f29d4400826aa7b4127cceb62021-12-04T04:35:06ZChlorine emission characteristics and control status of coal-fired units2352-484710.1016/j.egyr.2021.11.129https://doaj.org/article/c9e9e546f29d4400826aa7b4127cceb62022-04-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S2352484721012762https://doaj.org/toc/2352-4847Chlorine is a harmful trace element in coal. During coal combustion, the chlorine undergoes complex changes and transfers to the gas, and forms chlorine-containing substances. This paper summarizes the field test data of chlorine emission from domestic coal-fired units, and analyzes the chlorine emission and control characteristics. The results show that during the combustion process, the chlorine in coal is released into flue gas, mainly HCl, and a small amount of Cl2 and particulate Cl. Conventional pollutant control facilities affect the form and concentration of Cl. The impact of dust removal facilities on Cl is mainly reflected in the coordinated removal of particulate Cl. The impact of wet desulfurization facilities on Cl is mainly reflected in the coordinated removal of HCl. The Cl emission concentration in flue gas of coal-fired units is 0.85 mg/m3, which meets the emission requirements. Chlorine is transferred from coal to fly ash, desulfurization wastewater and desulfurization gypsum, so the secondary pollution of chlorine should be paid much attention. HCl in coal-fired flue gas has an adverse effect on wet desulfurization facilities. Based on the material balance of chloride ions in absorption tower slurry, this paper proposes a technical idea for removing HCl from flue gas with alkaline absorbents.Can ZhouWen XiLei YangBing LiElsevierarticleCoal-fired unitChlorine emissionDust removal facilityWet desulfurization facilityCollaborative controlElectrical engineering. Electronics. Nuclear engineeringTK1-9971ENEnergy Reports, Vol 8, Iss , Pp 51-58 (2022)
institution	DOAJ
collection	DOAJ
language	EN
topic	Coal-fired unit Chlorine emission Dust removal facility Wet desulfurization facility Collaborative control Electrical engineering. Electronics. Nuclear engineering TK1-9971
spellingShingle	Coal-fired unit Chlorine emission Dust removal facility Wet desulfurization facility Collaborative control Electrical engineering. Electronics. Nuclear engineering TK1-9971 Can Zhou Wen Xi Lei Yang Bing Li Chlorine emission characteristics and control status of coal-fired units
description	Chlorine is a harmful trace element in coal. During coal combustion, the chlorine undergoes complex changes and transfers to the gas, and forms chlorine-containing substances. This paper summarizes the field test data of chlorine emission from domestic coal-fired units, and analyzes the chlorine emission and control characteristics. The results show that during the combustion process, the chlorine in coal is released into flue gas, mainly HCl, and a small amount of Cl2 and particulate Cl. Conventional pollutant control facilities affect the form and concentration of Cl. The impact of dust removal facilities on Cl is mainly reflected in the coordinated removal of particulate Cl. The impact of wet desulfurization facilities on Cl is mainly reflected in the coordinated removal of HCl. The Cl emission concentration in flue gas of coal-fired units is 0.85 mg/m3, which meets the emission requirements. Chlorine is transferred from coal to fly ash, desulfurization wastewater and desulfurization gypsum, so the secondary pollution of chlorine should be paid much attention. HCl in coal-fired flue gas has an adverse effect on wet desulfurization facilities. Based on the material balance of chloride ions in absorption tower slurry, this paper proposes a technical idea for removing HCl from flue gas with alkaline absorbents.
format	article
author	Can Zhou Wen Xi Lei Yang Bing Li
author_facet	Can Zhou Wen Xi Lei Yang Bing Li
author_sort	Can Zhou
title	Chlorine emission characteristics and control status of coal-fired units
title_short	Chlorine emission characteristics and control status of coal-fired units
title_full	Chlorine emission characteristics and control status of coal-fired units
title_fullStr	Chlorine emission characteristics and control status of coal-fired units
title_full_unstemmed	Chlorine emission characteristics and control status of coal-fired units
title_sort	chlorine emission characteristics and control status of coal-fired units
publisher	Elsevier
publishDate	2022
url	https://doaj.org/article/c9e9e546f29d4400826aa7b4127cceb6
work_keys_str_mv	AT canzhou chlorineemissioncharacteristicsandcontrolstatusofcoalfiredunits AT wenxi chlorineemissioncharacteristicsandcontrolstatusofcoalfiredunits AT leiyang chlorineemissioncharacteristicsandcontrolstatusofcoalfiredunits AT bingli chlorineemissioncharacteristicsandcontrolstatusofcoalfiredunits
_version_	1718372995540451328

Chlorine emission characteristics and control status of coal-fired units

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