The grid injection unit allows the biomethane to be fed into the gas grid. Biovoima has implemented a containerised solution, the BIOadapter, at numerous sites in Finland and the Baltic countries. The pressure of the biomethane supplied by the grid injection unit is precisely adjusted to the network requirements and the gas is fed into the grid. The grid injection unit also enables gas odorization, the measurement of the quality and quantity of commercial gas supplied, and the billing of the grid company on this basis.
The gas can be fed into the grid immediately after biogas processing or transported to the container either by pipeline or by high-pressure transfer container. The grid connection container can also be used for pressure reduction in applications other than grid gas injection, such as the use of biomethane for industrial production.
Biovoima supplies BIOadapterCH4 -pressure reduction unit for Hycamite in Kokkola, Finland. Hycamite is building a hydrogen production plant for which Biovoima has already completed a pressure reduction unit at its own factory in Jyväskylä. BIOadapterCH4 required for the plant's gas receiving station.
Like the Hycamite, the BIOadapter can be used as a gas pressure reduction unit at the point of use, but also for feeding biomethane into the gas network. Hycamite Technology Concept Manager Mathias Ukskoski explains that the BIOadapter is intended to enable the reception of biomethane from gas transmission equipment, thus ensuring the continuous availability of gas and further the security of production of the plant. BIOadapterCH4 enables the integration of biomethane and natural gas into the plant's production process by reducing the gas pressure at the gas reception point, thus allowing the use of high-pressure gas imported by containers.
”Our plant uses biomethane in a production process that uses thermocatalytic decomposition of methane molecules to produce energy-efficient clean hydrogen and industrial-grade solid carbon by decomposing methane using emission-free technology. The end product is clean hydrogen for industrial use, as well as clean, high-value carbon that can be used as such in a wide range of industries. The coal is also further processed into graphite, which is important for the automotive industry, for example in the production of lithium-ion batteries,” says Ukskoski.
The grid injection unit is a prefabricated solution built into a 10’ sea container, which is almost completely standardized. Only the size of the piping, the pressure control components and the container accessories are custom selected according to how the gas is brought into the container, the pressure of the gas network and how much gas is allowed to flow through the container.
In addition, the network interface unit can be equipped with the following accessories:
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