Wärtsilä Gas Solutions, part of the technology group Wärtsilä, has launched the Wärtsilä Gas Solutions Puregas BC, a system designed to purify and liquefy the carbon dioxide captured from biogas upgrading plants. This solution offers a reliable, energy-efficient, carbon-negative, and profitable process for plant owners.
Traditional biogas upgrading plants typically involve the “catch and release” of carbon dioxide. Instead of releasing it into the atmosphere, Puregas BC employs advanced technologies to purify and liquefy the carbon dioxide. This approach transforms biogas, already a circular and zero-carbon footprint fuel, into a carbon-negative solution. When combined with Wärtsilä’s Puregas CA biogas upgrading system, the Puregas BC solution further eliminates the already minimal methane emissions (less than 0.1%), as any methane slip can be redirected back to the upgrader.
Beyond its environmental advantages, the solution also opens up a new, commercially viable revenue stream for plant owners. The captured carbon dioxide is purified to food and beverage grade and/or storage grade. With upcoming regulations in e-fuels production requiring bio CO2 as feedstock, the Puregas BC solution is perfectly positioned to meet these new demands.
Magnus Folkelid, Sales Manager for Wärtsilä Gas Solutions, Biogas, commented, “The world is facing a climate crisis that requires not only neutralizing but also reversing the effects of carbon emissions. The Puregas BC product can achieve this, moving us from a carbon-neutral to a carbon-negative impact. This solution is designed to help our customers meet their decarbonization goals, while also providing a commercial benefit.”
The system is available as a containerized plant, requiring no additional buildings, and is designed for seamless integration with Wärtsilä Gas Solutions Puregas CA systems. It can also be retrofitted or integrated with other biogas upgrading processes.
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