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NOx Emission from Electric Arc Furnace : Measurement and Modelling

Title data

Kirschen, Marcus ; Voj, Lukas ; Pfeifer, Herbert:
NOx Emission from Electric Arc Furnace : Measurement and Modelling.
In: Ashburn, Ronald E. , Association for Iron & Steel Technology (ed.): AISTech 2005 : Proceedings of the Iron & Steel Technology. Vol. 1. - Warrendale, PA : AIST , 2005 . - pp. 585-595
ISBN 1886362793

Abstract in another language

Off-gas measurements were conducted at industrial Electric Arc Furnaces (EAF) in Germany in order to investigate the interrelation of NOx emission with plant equipment and process data. Measurements were carried out simultaneously at the EAF elbow and at the primary hot gas duct of the dedusting plant, after complete post-combustion of EAF off-gas. From the measurements the contribution of post-combustion of EAF off-gas in the dedusting system to total NOx emission is distinguished. NOx formation by uncontrolled post-combustion of EAF off-gas outside the furnace is considerable. Besides post-combustion of EAF off-gas at the hot gas duct of dedusting system, main sources of NOx formation are: 1. NOx formation in the electric arc plasma during start-up time of the melting process in oxidising furnace atmosphere after charging of the furnace. 2. NOx formation from post-combustion of CO/CO2/H2 gas with air inside and outside the furnace. The positive effect of minimum volume flow rate of air into the furnace by controlled off-gas extraction to total NOx emission is shown.

Further data

Item Type: Article in a book
Refereed: Yes
Keywords: Electric Arc Furnace; NOx emission; post-combustion; off-gas analysis
Institutions of the University: Faculties > Faculty of Engineering Science
Research Institutions > Affiliated Institutes > Fraunhofer Center for High Temperature Materials and Design (HTL)
Result of work at the UBT: No
DDC Subjects: 600 Technology, medicine, applied sciences > 620 Engineering
Date Deposited: 18 Jun 2019 09:21
Last Modified: 18 Jun 2019 09:21
URI: https://eref.uni-bayreuth.de/id/eprint/49602