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Optimal Integration of Solid Sorbent CO2 capture / H2 Production Technology in the Iron and Steel Industry
UKSSSRC Scientific Collaboration Award- Academic partner: University of Manchester; Industry partner: British Steel The iron and steel industry is the largest UK manufacturing industry in terms of energy demand and greenhouse gas (GHG) emissions. Currently, more than 6 Mt of steel are produced annually in six blast furnaces at two steelworks in the UK. With a total specific energy consumption of 19 GJ/t of steel and overall direct CO2 emissions of 13 Mt, these account for ca. 25% of the UK manufacturing GHG emissions1. In integrated iron and steel production plants, around 50% of the CO2 emissions are generated via the combustion of valuable energy and CO/CO2 containing off-gases, in particular from Blast Furnace Gas (BFG). The Calcium Assisted Steel-mill Off-gas Hydrogen (CASOH) production solid sorbent capture technology2 is currently under development at the UoM in the framework of the BREISTORM project in collaboration with CSIC and BS. The technology offers considerable promise in terms of energy, environmental and economic performance since H2 is produced from off-gas while a CO2–rich stream is simultaneously separated allowing efficient thermal integration at high temperature. In this collaborative project we will investigate the optimal integration of the CASOH capture technology in steelworks and the conversion of its flue products into liquid fuels through the Fischer-Tropsch process. Objectives i) to develop systems modelling and perform cost/benefit analysis for the CASOH capture technology reactor network system for processing steelworks off-gases (UCL (CSIC providing reactor performance data)); ii) to carry out the conceptual full-scale pre-design of the integrated capture technology using the British Steel Scunthorpe Steelworks as a test case (UCL/UoM (British Steel providing process data)); iii) to perform a techno-economic feasibility study for the chemical synthesis of the decarbonised CASOH capture technology H2-rich flue stream to produce Fischer-Tropsch products (UoM/UCL).
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