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Växjö Energi to demo SFW carbon capture tech

Växjö Energi to demo SFW carbon capture tech
Växjö Energi's biomass-fired Sandvik combined heat and power (CHP) plant (photo courtesy Jonas Ljungdahl).

Japan-headed carbon capture technology provider Sumitomo SHI FW (SFW) and the Swedish municipal energy company Växjö Energi AB have announced that they are collaborating on a test campaign this summer to optimize carbon capture technology based on the hot potassium carbonate (HPC) process.

Växjö Energi is aiming to achieve bioenergy with carbon capture and storage  (BEECS) from its already fully fossil-free combined heat and power (CHP) plant in Växjö. The goal is to capture approximately 200,000 tonnes of carbon dioxide (CO2) annually, starting in 2028.

Växjö Energi and SFW have signed an agreement under which SFW will provide a mobile carbon capture demonstration facility and Växjö Energi will host the corresponding operation activities at its Sandvik biomass-fired CHP plant in Växjö.

The campaign aims to demonstrate the full carbon capture solution, including carbon dioxide capturing and liquefaction.

The HPC process has a CO2 capture rate exceeding 90 percent and produces high-purity (<99 percent) CO2.

The electricity-powered technology also produces low-temperature heat, contributing to sustainable heat production and low energy penalty.

With all our plants already turned fossil-free for years, this provides a solid platform for realizing negative emissions through carbon capture of biogenic CO2. The demonstration will provide valuable insights on how to optimize the technical solution to fit our existing combined heat and power plant to even further lower climate impact, said Erik Tellgren, CEO at Växjö Energi.

The campaign’s planned schedule includes installing the mobile unit at the Växjö site during May–June 2024, with operations commencing by the end of June. Operation with the demonstration unit continues until the end of September 2024.

We are excited to demonstrate the HPC solution with a sustainable energy supplier like Växjö Energi, who provides us with a real-world scenario for optimization. Via the campaign, Växjö Energi can operate our solution with their specific flue gas conditions. This is an excellent example of how we can work together within the industry to power decarbonization, said Frank Ligthart, VP of Circular Carbon SFW.

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