Simultaneous removal of NOx and SO2 from simulated marine ship flue gas in a novel wet scrubbing system based on divided diaphragm seawater electrolysis technology: efficiency optimization and economic assessment

This work constructed a divided diaphragm seawater electrolysis system with two tandem packed towers for the synergistic removal of NOx and SO2. The first tower was mainly used to oxidize NO and SO2 by AC (active chlorine), and the second tower was used to further absorb NOx. The factors affecting o...

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Autores principales:	Pijian Gong, Xinxue Li
Formato:	article
Lenguaje:	EN
Publicado:	IWA Publishing 2021
Materias:	divided diaphragm electrolytic cell no and so2 removal seawater electrolysis Environmental technology. Sanitary engineering TD1-1066
Acceso en línea:	https://doaj.org/article/22b0ab7e29bd4df49734e5417c66a4a9
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spelling	oai:doaj.org-article:22b0ab7e29bd4df49734e5417c66a4a92021-11-06T10:51:07ZSimultaneous removal of NOx and SO2 from simulated marine ship flue gas in a novel wet scrubbing system based on divided diaphragm seawater electrolysis technology: efficiency optimization and economic assessment0273-12231996-973210.2166/wst.2021.053https://doaj.org/article/22b0ab7e29bd4df49734e5417c66a4a92021-03-01T00:00:00Zhttp://wst.iwaponline.com/content/83/5/1230https://doaj.org/toc/0273-1223https://doaj.org/toc/1996-9732This work constructed a divided diaphragm seawater electrolysis system with two tandem packed towers for the synergistic removal of NOx and SO2. The first tower was mainly used to oxidize NO and SO2 by AC (active chlorine), and the second tower was used to further absorb NOx. The factors affecting on NO removal, including ACC (active chlorine concentration), pH value, initial NO concentration and temperature in the oxidation tower were investigated. Moreover, the effect of different inlet gas concentrations and current values were explored. The results showed that with the increase of ACC, the NO and NOx removal efficiency increased rapidly, but when the ACC was higher than 500 mg/L [Cl2], the removal efficiency did not increase further in the oxidation tower. Low pH values in the oxidation tower were favorable for NO removal. NO removal efficiency reached a maximum at 40 °C. Higher NO and SO2 concentrations were favorable for NO removal. The decline of pH in the anode cell was not conducive to the storage of AC in the continuous electrolysis removal process. NOx and SO2 were almost completely removed after being scrubbed in the oxidation and absorption towers. The relationship between current and removal efficiency of NO and SO2 in the oxidation tower was also analyzed. Finally, the removal mechanism and the application prospects were discussed.Pijian GongXinxue LiIWA Publishingarticledivided diaphragm electrolytic cellno and so2removalseawater electrolysisEnvironmental technology. Sanitary engineeringTD1-1066ENWater Science and Technology, Vol 83, Iss 5, Pp 1230-1241 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	divided diaphragm electrolytic cell no and so2 removal seawater electrolysis Environmental technology. Sanitary engineering TD1-1066
spellingShingle	divided diaphragm electrolytic cell no and so2 removal seawater electrolysis Environmental technology. Sanitary engineering TD1-1066 Pijian Gong Xinxue Li Simultaneous removal of NOx and SO2 from simulated marine ship flue gas in a novel wet scrubbing system based on divided diaphragm seawater electrolysis technology: efficiency optimization and economic assessment
description	This work constructed a divided diaphragm seawater electrolysis system with two tandem packed towers for the synergistic removal of NOx and SO2. The first tower was mainly used to oxidize NO and SO2 by AC (active chlorine), and the second tower was used to further absorb NOx. The factors affecting on NO removal, including ACC (active chlorine concentration), pH value, initial NO concentration and temperature in the oxidation tower were investigated. Moreover, the effect of different inlet gas concentrations and current values were explored. The results showed that with the increase of ACC, the NO and NOx removal efficiency increased rapidly, but when the ACC was higher than 500 mg/L [Cl2], the removal efficiency did not increase further in the oxidation tower. Low pH values in the oxidation tower were favorable for NO removal. NO removal efficiency reached a maximum at 40 °C. Higher NO and SO2 concentrations were favorable for NO removal. The decline of pH in the anode cell was not conducive to the storage of AC in the continuous electrolysis removal process. NOx and SO2 were almost completely removed after being scrubbed in the oxidation and absorption towers. The relationship between current and removal efficiency of NO and SO2 in the oxidation tower was also analyzed. Finally, the removal mechanism and the application prospects were discussed.
format	article
author	Pijian Gong Xinxue Li
author_facet	Pijian Gong Xinxue Li
author_sort	Pijian Gong
title	Simultaneous removal of NOx and SO2 from simulated marine ship flue gas in a novel wet scrubbing system based on divided diaphragm seawater electrolysis technology: efficiency optimization and economic assessment
title_short	Simultaneous removal of NOx and SO2 from simulated marine ship flue gas in a novel wet scrubbing system based on divided diaphragm seawater electrolysis technology: efficiency optimization and economic assessment
title_full	Simultaneous removal of NOx and SO2 from simulated marine ship flue gas in a novel wet scrubbing system based on divided diaphragm seawater electrolysis technology: efficiency optimization and economic assessment
title_fullStr	Simultaneous removal of NOx and SO2 from simulated marine ship flue gas in a novel wet scrubbing system based on divided diaphragm seawater electrolysis technology: efficiency optimization and economic assessment
title_full_unstemmed	Simultaneous removal of NOx and SO2 from simulated marine ship flue gas in a novel wet scrubbing system based on divided diaphragm seawater electrolysis technology: efficiency optimization and economic assessment
title_sort	simultaneous removal of nox and so2 from simulated marine ship flue gas in a novel wet scrubbing system based on divided diaphragm seawater electrolysis technology: efficiency optimization and economic assessment
publisher	IWA Publishing
publishDate	2021
url	https://doaj.org/article/22b0ab7e29bd4df49734e5417c66a4a9
work_keys_str_mv	AT pijiangong simultaneousremovalofnoxandso2fromsimulatedmarineshipfluegasinanovelwetscrubbingsystembasedondivideddiaphragmseawaterelectrolysistechnologyefficiencyoptimizationandeconomicassessment AT xinxueli simultaneousremovalofnoxandso2fromsimulatedmarineshipfluegasinanovelwetscrubbingsystembasedondivideddiaphragmseawaterelectrolysistechnologyefficiencyoptimizationandeconomicassessment
_version_	1718443718963363840

Simultaneous removal of NOx and SO2 from simulated marine ship flue gas in a novel wet scrubbing system based on divided diaphragm seawater electrolysis technology: efficiency optimization and economic assessment

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