CO₂ liquefaction plays a crucial role in carbon capture and storage initiatives. By capturing CO₂ emissions from industrial processes, we avoid releasing that CO₂ into the atmosphere, thus not incrementing GHG concentration. The subsequent step of CO₂ liquefaction allows for different kind of usage: from safe transportation and permanent storage underground or in depleted oil and gas reservoirs, to its integration into various industrial processes.

As Pietro Fiorentini, we can integrate CO₂ recovery and liquefaction systems with upgrading plants. This allows to capture and transform the off-gas coming from biogas upgrading into high-quality valuable product. With the use of advanced technologies such as membrane upgrading and a new distillation process, our systems can successfully purify and liquefy CO₂ avoiding methane slip form the upgrading process. The final product is liquid food-grade CO₂ that can be used in the food and beverage sector as a green substitute of the fossil CO₂ previously used.

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In biomethane plants, Biokompsystems for biomethane compression can be successfully employed to allow biogas treatment and compression before and after upgrading. Reliability and performance of our equipment are essential not only to achieve the quality standards for natural gas, but also to ensure maximum energy efficiency and heat recovery.

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Cryo Inox, part of Pietro Fiorentini Group since 2022, is an industrial and technological company specialized in advanced cryogenic technologies through the brand ADD Synergy. Cryo Inox is committed to sustainability and provides eco-friendly energy solutions for natural gas, biogas and biomethane, encompassing small-scale liquefaction, distillation, regasification, storage and truck loading plants.

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Biokomp is specialised in designing and manufacturing low-, medium- and high-pressure compressors for biogas and other gases. With more than 10 years of experience in the gas sector, Biokomp provides solutions that not only include the development, planning and construction of biogas compressor systems but also intensive technical and process support from the feasibility study to the final commissioning.

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FIOGrade upgrading system is fully integrated with our biomethane grid injection solution – FIOGrid, which is comprehensive of quality assessment, measurement of the gas flow, compression and pressure regulation, and odorisation.

The FIOGrid system accurately analyses and measures biomethane in several stages. If the composition of the biomethane produced complies with the injection parameters laid down in UNI/TS 11537, the biomethane is suitable for injec­tion into the grid.

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Cryo-polished biomethane liquefaction is an innovative technology that offers significant advantages in the production and utilization of renewable natural gas. This process involves the cryogenic treatment of biomethane, which enhances its purity and energy density, making it a more efficient and environmentally friendly fuel source.

One of the primary benefits of cryo-polished biomethane liquefaction is the increased purity of the final product. The cryogenic process effectively removes impurities such as carbon dioxide, hydrogen sulfide, and other contaminants, resulting in a biomethane stream that meets the highest quality standards. This improved purity translates to higher energy content and reduced emissions when the fuel is combusted.

Additionally, the liquefaction process allows for more efficient storage and transportation. Liquefied biomethane occupies significantly less volume compared to its gaseous counterpart, making it a more practical choice for long-distance transportation and storage in confined spaces.

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Pietro Fiorentini’s complete and integrated biogas upgrading solution – FIOGrade allows to efficiently remove water and contaminants (like sulphur, ammonia and organic compounds), while separating out carbon dioxide thanks to membranes filtration. The entire process allows to recover around 99,5% of the methane contained in input biogas, producing a pure stream that can be directly injected into the gas grid.

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