Completed demonstration operation of a highly durable, environmentally friendly CO₂ solvent at a commercial CO₂ capture plant in Saga City

Toshiba Energy Systems & Solutions Corporation

Toshiba Energy Systems & Solutions Corporation has completed the development of a high-performance CO₂ solvent for use in CO₂ capture plants. This development was conducted jointly with Saga City from March 2023 until March 2024. Since positive test results were obtained from this demonstration operation, the Company will commercialize the new TS-X™ solvent and promote sales of CO₂ capture plants.

Toshiba Energy Systems & Solutions Corporation has operated the commercial CO₂ capture plant^*1 that it delivered to the Saga City incineration plant in 2016 for a total of over 8,000 hours using the new solvent. As the system operates for extended periods, there is a need to reduce the maintenance and operating costs of the CO₂ capture plant by improving solvent performance. During the demonstration test, the Company compared the degradation rate of the solvent and the amount of amine emitted into the atmosphere, and confirmed that the degradation rate of the new solvent was reduced to one-third that of the conventional solvent, and that the amount of amine emissions were reduced to about one-tenth.

The Company has also conducted performance tests of the new solvent at its pilot plant and confirmed that the solvent can reduce the energy required for recovery, especially in areas where the CO₂ concentration in the exhaust gas is low (e.g., natural gas-fired power generation), compared to the current solvent.

With the goal of achieving carbon neutrality, Toshiba Energy Systems & Solutions Corporation will support the social implementation of CCUS^*2 through the development of CO₂ capture technology.

• Delivered as a demonstration test system for the carbon dioxide capture plant for Saga City’s biomass energy utilization project. (Japanese)
• CCUS (Carbon dioxide Capture, Utilization, and Storage): Technology to capture and recover, utilize, and store CO₂ emitted from thermal power plants, factories, etc.