Numerical Simulation of the Effects of Oil Gun Location and Oil Feed Rate on Coal Ignition and Burner Wall Temperature in a Tiny Oil Ignition Burner

To solve the overheating problem of tiny oil ignition burners’ walls during the firing-up process in a 330 MWe tangentially pulverized coal-fired boiler, a numerical model of a tiny oil ignition burner was carefully built considering combustion, gas–solid flow, and heat transfer. Then, the burner lo...

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Autores principales:	Qilei Ma, Wenqi Zhong, Xi Chen, Jianhua Li, Hui Zhang
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	tiny oil ignition burner extension distance oil feed rate wall overheating simulation Technology T
Acceso en línea:	https://doaj.org/article/98e9d842c2514b04a1fd88d367fb0694
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spelling	oai:doaj.org-article:98e9d842c2514b04a1fd88d367fb06942021-11-25T17:27:05ZNumerical Simulation of the Effects of Oil Gun Location and Oil Feed Rate on Coal Ignition and Burner Wall Temperature in a Tiny Oil Ignition Burner10.3390/en142275971996-1073https://doaj.org/article/98e9d842c2514b04a1fd88d367fb06942021-11-01T00:00:00Zhttps://www.mdpi.com/1996-1073/14/22/7597https://doaj.org/toc/1996-1073To solve the overheating problem of tiny oil ignition burners’ walls during the firing-up process in a 330 MWe tangentially pulverized coal-fired boiler, a numerical model of a tiny oil ignition burner was carefully built considering combustion, gas–solid flow, and heat transfer. Then, the burner location and oil feed rate were optimized based on the model to prevent the burner’s walls from overheating. The effects of the oil gun extension distance (100, 200, 300, 400, 500 mm) and oil feed rate (160, 140, 120, 100, 80, 70, 60 kg/h) on coal ignition performance and burner wall temperature were carefully investigated. The simulation results showed good agreement with the measured results. The results indicated that decreasing the oil gun distance within the burner diminished the flame length of the co-combustion of oil and pulverized coal, thus lowering the burner wall temperature. Decreasing the oil feed rate appropriately could also reduce the burner wall temperature without influencing the ignition performance. Considering both ignition performance and burner wall temperature, an extension of 400 mm of the oil gun location and an oil feed rate of 160 kg/h were successfully applied to the actual operation without adverse effects. Moreover, it is suggested to move the temperature monitor points from the burner upper wall to the burner side wall.Qilei MaWenqi ZhongXi ChenJianhua LiHui ZhangMDPI AGarticletiny oil ignition burnerextension distanceoil feed ratewall overheatingsimulationTechnologyTENEnergies, Vol 14, Iss 7597, p 7597 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	tiny oil ignition burner extension distance oil feed rate wall overheating simulation Technology T
spellingShingle	tiny oil ignition burner extension distance oil feed rate wall overheating simulation Technology T Qilei Ma Wenqi Zhong Xi Chen Jianhua Li Hui Zhang Numerical Simulation of the Effects of Oil Gun Location and Oil Feed Rate on Coal Ignition and Burner Wall Temperature in a Tiny Oil Ignition Burner
description	To solve the overheating problem of tiny oil ignition burners’ walls during the firing-up process in a 330 MWe tangentially pulverized coal-fired boiler, a numerical model of a tiny oil ignition burner was carefully built considering combustion, gas–solid flow, and heat transfer. Then, the burner location and oil feed rate were optimized based on the model to prevent the burner’s walls from overheating. The effects of the oil gun extension distance (100, 200, 300, 400, 500 mm) and oil feed rate (160, 140, 120, 100, 80, 70, 60 kg/h) on coal ignition performance and burner wall temperature were carefully investigated. The simulation results showed good agreement with the measured results. The results indicated that decreasing the oil gun distance within the burner diminished the flame length of the co-combustion of oil and pulverized coal, thus lowering the burner wall temperature. Decreasing the oil feed rate appropriately could also reduce the burner wall temperature without influencing the ignition performance. Considering both ignition performance and burner wall temperature, an extension of 400 mm of the oil gun location and an oil feed rate of 160 kg/h were successfully applied to the actual operation without adverse effects. Moreover, it is suggested to move the temperature monitor points from the burner upper wall to the burner side wall.
format	article
author	Qilei Ma Wenqi Zhong Xi Chen Jianhua Li Hui Zhang
author_facet	Qilei Ma Wenqi Zhong Xi Chen Jianhua Li Hui Zhang
author_sort	Qilei Ma
title	Numerical Simulation of the Effects of Oil Gun Location and Oil Feed Rate on Coal Ignition and Burner Wall Temperature in a Tiny Oil Ignition Burner
title_short	Numerical Simulation of the Effects of Oil Gun Location and Oil Feed Rate on Coal Ignition and Burner Wall Temperature in a Tiny Oil Ignition Burner
title_full	Numerical Simulation of the Effects of Oil Gun Location and Oil Feed Rate on Coal Ignition and Burner Wall Temperature in a Tiny Oil Ignition Burner
title_fullStr	Numerical Simulation of the Effects of Oil Gun Location and Oil Feed Rate on Coal Ignition and Burner Wall Temperature in a Tiny Oil Ignition Burner
title_full_unstemmed	Numerical Simulation of the Effects of Oil Gun Location and Oil Feed Rate on Coal Ignition and Burner Wall Temperature in a Tiny Oil Ignition Burner
title_sort	numerical simulation of the effects of oil gun location and oil feed rate on coal ignition and burner wall temperature in a tiny oil ignition burner
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/98e9d842c2514b04a1fd88d367fb0694
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Numerical Simulation of the Effects of Oil Gun Location and Oil Feed Rate on Coal Ignition and Burner Wall Temperature in a Tiny Oil Ignition Burner

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