CO₂ circular utilization with carbon recycling technology
- The author's affiliation name is as of the time of publication.
- The information contained in IHI ENGINEERING REVIEW is as of the time of publication.Please note that development and product manufacturing may have been terminated.
Carbon recycling
We are proceeding with the development of carbon recycling technology to utilize CO₂ in circulation. The carbon recycling technology consists of the combination of the technology to capture CO₂ from exhaust gases from industrial facilities or atmosphere and the technology to synthesize hydrocarbons from CO₂.

CO₂ capture

We have the technology to capture CO₂ from combustion exhaust gases with the use of the chemical absorption method. The conventional method requires a large amount of energy to separate CO₂ from gas mixtures, but we originally developed an absorbent liquid that enables us to reduce energy consumption for CO₂ separation by approximately 40%. For this CO₂ capture technology, we have demonstrated its performance through a bench-scale test, pilot-plant scale operation, and demonstration test at a commercial thermal power plant. Currently, we are also developing technology to efficiently capture atmospheric CO₂.

Methanation
Methanation is a carbon recycling technology to produce methane, the main component of natural gas, as synthetic methane (e-methane) through catalytic reaction between CO₂ and hydrogen. We are working to develop original catalysts with high performance and long life and to design and develop highly efficient methanation systems. In addition, we aim to commercialize large-scale plants for the societal implementation of synthetic methane, and are optimizing the technology through demonstration experiments using small test equipment (12.5 Nm³/h).



Related articles
- Vol. 55 No. 1 (2022) Accelerating the Realization of a Decarbonized and Carbon Recycling Society with Carbon Recycling Technologies
- Vol. 57 No. 1 (2024) Japan’s First Green Methane Supply for Community Bus Started ! A new attempt to use synthetic methane (green methane) produced by surplus electric power from renewable energy effectively as vehicle fuel
Sustainable aviation fuel (SAF)
We are developing technology to directly produce sustainable aviation fuel (SAF). Our catalyst technology and process optimization allow us to improve the production efficiency of SAF and to enhance cost competitiveness.
