Tohoku Univ. Technology :Carbon recovery from dry smelting flue gases : T21-205
Carbon recovery from CO2 and CO containing gas Use as raw material for ironmaking
The steel industry, which emits the largest amount of carbon dioxide (CO2), is required to reduce its CO2 emissions as soon as possible. A process for recovering and recycling solid carbon from gases containing CO2 and carbon monoxide (CO) is known. This process uses water gas shift reaction (CO2+H2→CO+H2O) and carbon deposition reaction (2CO→C+CO2, CO+H2→C+H2O). However, there has been concern that the precipitated carbon is fine and difficult to recover. This invention enables carbon recovery from CO2 and CO in gas by using porous fibrous iron (iron whisker) as a carbon deposition site. Furthermore, iron raw materials containing carbon could be used directly in the ironmaking process. This may lead to the carbon cycle process in the ironmaking process.
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The revenue generated from technology transfer is reinvested as new research funding for universities and researchers, and is utilized to create further research outcomes. To ensure the smooth operation of this cycle, known as the "Intellectual Creation Cycle," we will vigorously promote technology transfer. The types of seeds we handle include patents, know-how, databases, and programs. We have established a collaborative framework by signing basic technology transfer agreements with the following universities (as of June 1, 2025): Tohoku University, Hirosaki University, Iwate University, Akita University, Fukushima University, Yamagata University, Tohoku Gakuin University, Iwate Medical University, Fukushima Medical University, Aizu University, Miyagi University, Hokkaido University, Muroran Institute of Technology, and Showa Medical University.
