Comparison of CO2 emission between COREX and blast furnace iron-making system |
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| Authors: | Changqing HU Xiaowei HAN Zhihong LI Chunxia ZHANG |
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| Affiliation: | 1. Hebei Polytechnic University, Tangshan 063009, China;2. Tsinghua University, Beijing 100084, China;3. State Key Laboratory of Advanced Steel Process and Products, Beijing 100081, China;1. China Energy Group, Environmental Energy Technologies Division, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, MS 90R2002, Berkeley, CA 94720, USA;2. State Key Laboratory of Advanced Steel Processes and Products, China Iron & Steel Research Institute, Beijing, China;1. Babes – Bolyai University, Faculty of Chemistry and Chemical Engineering, 11 Arany Janos, RO-400028, Cluj – Napoca, Romania;2. ECN Part of TNO, Westerduinweg 3, 1755 LE, Petten, the Netherlands;1. Institute of Thermal Science and Power Engineering, Naval University of Engineering, Wuhan 430033, PR China;2. Military Key Laboratory for Naval Ship Power Engineering, Naval University of Engineering, Wuhan 430033, PR China;3. College of Power Engineering, Naval University of Engineering, Wuhan 430033, PR China |
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| Abstract: | Steel works faced increasing demand to minimize the emission of GHGs. The CO2 emissions of COREX and blast furnace iron-making system were compared. It is point out that COREX contribute little to CO2 emission reduction. Comparing to conventional blast furnace iron-making system, direct CO2 emissions of COREX is higher. Considering the credits of export gases for power generation, the total CO2 emission of COREX have advantages only when the COREX is joined with high-efficiency generating units which efficiency is greater than 45% and CO2 emission factor of the grid is higher than 0.9 kgCO2/kWh. |
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