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VERSION:2.0
METHOD:PUBLISH
BEGIN:VEVENT
ORGANIZER;CN='8th ECIC & 9th ICSTI 2022':MAILTO:info@ecic-icsti.com
LOCATION:Room „Borgward“
SUMMARY:Coke oven gas injection into the blast furnace to reduce CO2 emission and to improve the conversion of pulverized coal via Oxy-Coal-Lances
DESCRIPTION:Reduction of CO2 emission is an important challenge for integrated steel plants. Injection of hydrogen rich gas into the blast furnace is one of the most suitable and ready accessible measures to substitute carbon input and consequently to reduce the overall CO2 emission. For almost 3 years, started in November 2017 at ROGESA (Roheisengesellschaft Saar mbH) coke oven gas (COG) was injected at pilot scale and, since June, 2020 at industrial scale into No. 4 and No. 5 blast furnace. The pilot project has been launched to investigate and gain valuable experience on different aspects. First, the pilot installation was configured to be able to inject coke oven gas through the copper tuyere at high flow rates in order to reduce the overall carbon-dioxide emissions. Secondly, the pilot installation was adapted to enable adding simultaneously minimal required quantities to the transport gas of the pulverized coal in order to improve the ignition and conversion of the coal at the tip of the oxy-coal-lance. Thus, the pilot installation delivered us to gain valuable information for the industrial up-scaling on different injection technologies, on the handling H2-rich gas from safety aspect and the behavior of H2 as ignition gas to improve the gasification-conversion of the coal. In parallel, laboratory trials under blast furnace simulating conditions have been performed at the RWTH Aachen University in order to testify the effect of adding coke oven gas to the transport gas of the pulverized coal. Based on these investigations, an industrial plant has been built and commissioned. This paper presents the results obtained at the laboratory trials at the RWTH Aachen University, at pilot installation in Dillingen and the first industrial results obtained on No. 5 blast furnaces of ROGESA.
CLASS:PUBLIC
DTSTART:20220632T092000
DTEND:20220632T094500
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