BIOCH4NGE®
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Biogas upgrading is the treatment aimed at removing CO₂ from raw biogas.
Among the various upgrading technologies for biomethane available on the market, AB offers the BIOCH4NGE® solution for compressed biomethane, which uses a membrane system, the most widespread and most commonly used in the world. The membranes are made up of special polymeric materials characterized by a selective permeability useful for the separation between CH₄ and CO₂
Membrane system benefits
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BIOCH4NGE®: how is it made
How the process works
The process consists of several phases.
In the first phase, a chilled water heat exchanger, supplied by a chiller, lowers the biogas temperature from the digester, while a condensation separator removes excess water. Downstream of dehumidification, a blower compresses the gas at a suitable pressure for subsequent treatments.
Biogas then passes into the activated carbon tanks for the abatement of volatile organic compounds and hydrogen sulfide.
Once filtered, the biogas is compressed and enters the heart of the BIOCH4NGE® upgrading plant, where methane is separated from carbon dioxide using a multi-stage membrane system. The biomethane that conforms to the required standard is sent to the compression process, if needed, before being injected into the grid.
BIOCH4NGE® is completed by a series of preparatory options for feeding into the network and other accessories to support the operation of the system.
AB offers a range of regenerative thermal oxidisers (RTOs), to eliminate even the smallest percentages of residual methane in the off-gas.
Biomethane is produced at a pressure in a range from 7 to 15 bar to minimise consumption, but also to facilitate injection into distribution networks where necessary.
Strengths
Industrial product
BIOCH4NGE® is entirely designed and manufactured by AB and is pre-assembled and tested in our production facilities before shipping.
Modular outdoor solution
BIOCH4NGE® is a solution designed to be installed outside and is available in different sizes, guaranteeing the highest application modularity.
Compactness
Extremely compact, BIOCH4NGE® has been engineered in every way in order to optimize dimensions and simplify maintenance operations.
Plug & play
Plug & play installation to limit construction work and takes place inside contained spaces.
Sustainability
BIOCH4NGE® complies with the requirements for quality of the gas produced and of the gas emitted into the atmosphere; combined with AB secondary systems, it ensures complete zeroing of CH₄ emissions.
Remote control
BIOCH4NGE®is equipped with a centralized monitoring and supervision system, developed and managed by AB, which allows remote control of all plant parameters and of the connected production processes.
Full service
AB provides a "full-service" post-sales maintenance service which provides 24-hour assistance for 365 days a year, remote monitoring of the system and availability of original spare parts.
Compatibility
BIOCH4NGE® fits perfectly with AB cogeneration plants such as ECOMAX®, thus creating a complete and totally sustainable energy system.
AB’s offer for the upgrading of biogas in biomethane
BIOCH4NGE® is available in standardised units from 50 to 1,500 Nm³/h, complete with pre-treatment systems that can be used with existing biogas plants and integrated with possible extensions linked to the liquefaction of gas and the exploitation of CO₂. Solutions of different sizes can be “tailor-made”.
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