Modelling of dew point operating conditions in a rotary regenerative air heater

Dew point related fouling of regenerative rotary air heaters contributes to efficiency reduction of coal-fired boilers. This fouling commonly causes high pressure differences over the air heater steel matrix, along with elevated leakage rates, resulting in increased loading of draught group fans. Th...

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Autores principales:	Brandt Warren, Schmitz Walter, John Sheer Thomas, Lander Mike
Formato:	article
Lenguaje:	EN FR
Publicado:	EDP Sciences 2021
Materias:	Engineering (General). Civil engineering (General) TA1-2040
Acceso en línea:	https://doaj.org/article/b27c753d5e2d4f5da5f94b8b7796b0df
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spelling	oai:doaj.org-article:b27c753d5e2d4f5da5f94b8b7796b0df2021-12-02T17:13:35ZModelling of dew point operating conditions in a rotary regenerative air heater2261-236X10.1051/matecconf/202134700020https://doaj.org/article/b27c753d5e2d4f5da5f94b8b7796b0df2021-01-01T00:00:00Zhttps://www.matec-conferences.org/articles/matecconf/pdf/2021/16/matecconf_sacam21_00020.pdfhttps://doaj.org/toc/2261-236XDew point related fouling of regenerative rotary air heaters contributes to efficiency reduction of coal-fired boilers. This fouling commonly causes high pressure differences over the air heater steel matrix, along with elevated leakage rates, resulting in increased loading of draught group fans. These increases also conduce to excessive erosion rates, introducing premature failure of element packs and draught group components. The research problem aimed to develop, and validate, a modelling tool to predict the onset of dew point related fouling for regenerative rotary air heaters (VBA RAH model). A modelling tool equip system engineers with the knowledge to enhance operating conditions and maintenance strategies, to prevent the onset of dew point related fouling. The results yielded that the cold end of the air heater packs experience sulphuric acid dew point related fouling for at 670MW(90% MCR), at 544MW(80% MCR) and at 468MW(68% MCR) of the exposure time to the flue gas stream. Different operating and design change configurations were simulated to find potential solutions to minimize dew point related fouling and improving boiler efficiency. The tool provides a platform for identifying methods to reduce maintenance costs and production losses, which will contribute to improved and sustainable operating of coal fired power generation plants.Brandt WarrenSchmitz WalterJohn Sheer ThomasLander MikeEDP SciencesarticleEngineering (General). Civil engineering (General)TA1-2040ENFRMATEC Web of Conferences, Vol 347, p 00020 (2021)
institution	DOAJ
collection	DOAJ
language	EN FR
topic	Engineering (General). Civil engineering (General) TA1-2040
spellingShingle	Engineering (General). Civil engineering (General) TA1-2040 Brandt Warren Schmitz Walter John Sheer Thomas Lander Mike Modelling of dew point operating conditions in a rotary regenerative air heater
description	Dew point related fouling of regenerative rotary air heaters contributes to efficiency reduction of coal-fired boilers. This fouling commonly causes high pressure differences over the air heater steel matrix, along with elevated leakage rates, resulting in increased loading of draught group fans. These increases also conduce to excessive erosion rates, introducing premature failure of element packs and draught group components. The research problem aimed to develop, and validate, a modelling tool to predict the onset of dew point related fouling for regenerative rotary air heaters (VBA RAH model). A modelling tool equip system engineers with the knowledge to enhance operating conditions and maintenance strategies, to prevent the onset of dew point related fouling. The results yielded that the cold end of the air heater packs experience sulphuric acid dew point related fouling for at 670MW(90% MCR), at 544MW(80% MCR) and at 468MW(68% MCR) of the exposure time to the flue gas stream. Different operating and design change configurations were simulated to find potential solutions to minimize dew point related fouling and improving boiler efficiency. The tool provides a platform for identifying methods to reduce maintenance costs and production losses, which will contribute to improved and sustainable operating of coal fired power generation plants.
format	article
author	Brandt Warren Schmitz Walter John Sheer Thomas Lander Mike
author_facet	Brandt Warren Schmitz Walter John Sheer Thomas Lander Mike
author_sort	Brandt Warren
title	Modelling of dew point operating conditions in a rotary regenerative air heater
title_short	Modelling of dew point operating conditions in a rotary regenerative air heater
title_full	Modelling of dew point operating conditions in a rotary regenerative air heater
title_fullStr	Modelling of dew point operating conditions in a rotary regenerative air heater
title_full_unstemmed	Modelling of dew point operating conditions in a rotary regenerative air heater
title_sort	modelling of dew point operating conditions in a rotary regenerative air heater
publisher	EDP Sciences
publishDate	2021
url	https://doaj.org/article/b27c753d5e2d4f5da5f94b8b7796b0df
work_keys_str_mv	AT brandtwarren modellingofdewpointoperatingconditionsinarotaryregenerativeairheater AT schmitzwalter modellingofdewpointoperatingconditionsinarotaryregenerativeairheater AT johnsheerthomas modellingofdewpointoperatingconditionsinarotaryregenerativeairheater AT landermike modellingofdewpointoperatingconditionsinarotaryregenerativeairheater
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Modelling of dew point operating conditions in a rotary regenerative air heater

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