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ORGANIZER;CN=ESTAD 2023:mailto:info@metec-estad.com
LOCATION:Room 14a
SUMMARY:Pilot-scale development of hydrogen based direct reduction process
DESCRIPTION:The iron and steel industry contributes globally with a share of up to 7% to greenhouse gas emissions. The goal of the HYBRIT initiative is to realize a fossil-free iron and steel production value chain. In this value chain the fossil CO2 emissions associated with the traditional blast furnace route are eliminated by using a 100% green hydrogen based direct reduction process. Starting from today's conventional natural gas based direct reduction technology, a shift to hydrogen as reduction gas introduces significant changes to the process chemistry and thermodynamics. 
A direct reduction pilot plant, including all safety installations required for hydrogen operation, has been designed and commissioned to develop best practices under semi-industrial conditions. The plant has a capacity of 1 tonne DRI per hour. Typically, the plant is run in campaigns where continuous operation takes place for a period of about 6-8 weeks. After initial design and construction of the pilot plant the trials started at the end of 2020 with natural gas and continued in early 2021 with the use of hydrogen as reduction gas.
This paper provides key operational results from H-DR test trials conducted in the approximately 43 weeks of operation until today. DRI and HBI products have been successfully produced on pilot-scale under stable process conditions using 100% green hydrogen as reduction gas. Sponge iron produced with hydrogen as reduction agent is a carbon-free product. This DRI product has better physical, mechanical, chemical and reactivity characteristics compared to conventional DRI produced with natural gas. The results also demonstrate the technical feasibility to define a process window for production of DRI and HBI in an industrial DR plant based on green hydrogen. 

CLASS:PUBLIC
DTSTART:20230615T113000
DTEND:20230615T115000
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