Effect of CO2 injection into blast furnace tuyeres on the pulverized coal combustion

CO2 injection into blast furnace tuyeres is a new technology to utilize CO2, aiming at expanding the way of CO2 self-absorption in the metallurgical industry. The decisive factor of whether CO2 can be mixed into a blast-furnace hot blast and the proper mixing ratio is the effect of CO2 injection on...

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Autores principales:	Jiang Juanjuan, Zhu Rong, Qiu Shengtao
Formato:	article
Lenguaje:	EN
Publicado:	De Gruyter 2021
Materias:	co2 blast furnace burnout numerical simulation Technology T Chemical technology TP1-1185 Chemicals: Manufacture, use, etc. TP200-248
Acceso en línea:	https://doaj.org/article/78e1fd5b865c405b8798dc2d587c0a02
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spelling	oai:doaj.org-article:78e1fd5b865c405b8798dc2d587c0a022021-12-05T14:10:50ZEffect of CO2 injection into blast furnace tuyeres on the pulverized coal combustion2191-032410.1515/htmp-2021-0018https://doaj.org/article/78e1fd5b865c405b8798dc2d587c0a022021-05-01T00:00:00Zhttps://doi.org/10.1515/htmp-2021-0018https://doaj.org/toc/2191-0324CO2 injection into blast furnace tuyeres is a new technology to utilize CO2, aiming at expanding the way of CO2 self-absorption in the metallurgical industry. The decisive factor of whether CO2 can be mixed into a blast-furnace hot blast and the proper mixing ratio is the effect of CO2 injection on pulverized coal burnout. To investigate the effect of CO2 injection into tuyeres on pulverized coal burnout, a three-dimensional mathematical model of pulverized coal flow and combustion in the lower part of the pulverized coal injection lance-blowpipe-tuyere-raceway was established, and the effect of CO2 injection into tuyeres on pulverized coal combustion rate and outlet temperature is analyzed. The numerical simulation results show that the delay of pulverized coal combustion in the early stage is caused by the endothermic effect of the reaction of CO2 with carbon, and the burnout of pulverized coal is increased in the later stage due to the oxidation of CO2.Jiang JuanjuanZhu RongQiu ShengtaoDe Gruyterarticleco2 blast furnaceburnoutnumerical simulationTechnologyTChemical technologyTP1-1185Chemicals: Manufacture, use, etc.TP200-248ENHigh Temperature Materials and Processes, Vol 40, Iss 1, Pp 131-140 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	co2 blast furnace burnout numerical simulation Technology T Chemical technology TP1-1185 Chemicals: Manufacture, use, etc. TP200-248
spellingShingle	co2 blast furnace burnout numerical simulation Technology T Chemical technology TP1-1185 Chemicals: Manufacture, use, etc. TP200-248 Jiang Juanjuan Zhu Rong Qiu Shengtao Effect of CO2 injection into blast furnace tuyeres on the pulverized coal combustion
description	CO2 injection into blast furnace tuyeres is a new technology to utilize CO2, aiming at expanding the way of CO2 self-absorption in the metallurgical industry. The decisive factor of whether CO2 can be mixed into a blast-furnace hot blast and the proper mixing ratio is the effect of CO2 injection on pulverized coal burnout. To investigate the effect of CO2 injection into tuyeres on pulverized coal burnout, a three-dimensional mathematical model of pulverized coal flow and combustion in the lower part of the pulverized coal injection lance-blowpipe-tuyere-raceway was established, and the effect of CO2 injection into tuyeres on pulverized coal combustion rate and outlet temperature is analyzed. The numerical simulation results show that the delay of pulverized coal combustion in the early stage is caused by the endothermic effect of the reaction of CO2 with carbon, and the burnout of pulverized coal is increased in the later stage due to the oxidation of CO2.
format	article
author	Jiang Juanjuan Zhu Rong Qiu Shengtao
author_facet	Jiang Juanjuan Zhu Rong Qiu Shengtao
author_sort	Jiang Juanjuan
title	Effect of CO2 injection into blast furnace tuyeres on the pulverized coal combustion
title_short	Effect of CO2 injection into blast furnace tuyeres on the pulverized coal combustion
title_full	Effect of CO2 injection into blast furnace tuyeres on the pulverized coal combustion
title_fullStr	Effect of CO2 injection into blast furnace tuyeres on the pulverized coal combustion
title_full_unstemmed	Effect of CO2 injection into blast furnace tuyeres on the pulverized coal combustion
title_sort	effect of co2 injection into blast furnace tuyeres on the pulverized coal combustion
publisher	De Gruyter
publishDate	2021
url	https://doaj.org/article/78e1fd5b865c405b8798dc2d587c0a02
work_keys_str_mv	AT jiangjuanjuan effectofco2injectionintoblastfurnacetuyeresonthepulverizedcoalcombustion AT zhurong effectofco2injectionintoblastfurnacetuyeresonthepulverizedcoalcombustion AT qiushengtao effectofco2injectionintoblastfurnacetuyeresonthepulverizedcoalcombustion
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Effect of CO2 injection into blast furnace tuyeres on the pulverized coal combustion

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