Biodigesters
We design and construct treatment and combustion systems for the biogas produced by biomass fermentation processes, purification, mud fermentation and treatment of the water used for the generation of ‘green’ energy. We size and install solutions for dehumidification and any gas filtration downstream of the gasometer or fermenter, such as compression stations and high efficiency or open flame combustion elements in continuous operation or emergency conditions.
Where high efficiency combustion above 99% is required, we offer high performance combustors, which comply with ISO 22580 and ensure a residence time of > 0.3 seconds for temperatures over 1000°C and low atmospheric emissions. Combustion efficiency is ensured by the automatic regulation of the combustible air.
High flares or hidden flame flares are produced for installations where the combustor acts as an emergency element when the engines using biogas to produce electricity are turned off. Such combustors have a simple design that respects the safety standards during ignition and operation.
High flares feature a vertical structure where the burner is at the very top, ensuring the safety of the plant and the operational staff far from the combustion radiation. Flares for an extensive range of flows of gas to be burnt are available, from 100 to more than 7,500 Nm3/hr. High flares capable of handling large gas flows are complete with steps and a platform to access the burner for maintenance work.
The biogas leaving the gasometer, or digester, is available at low pressure and high humidity; it needs a compression and dehumidification stage for input to the engines for the production of electricity. We design the compression and dehumidification sections for flow and specific conditions of the production site, implementing interface logics with the gas production station and engine operation. Dehumidification is ensured by flushing the biogas into a heat exchanger (or parallel exchangers for large flows) with a demister positioned downstream ensuring the disposal of the condensate separated from the gas. The system includes an industrial refrigerator for the recirculation of the water to cool the gas in the exchanger, with a hydraulic circuit with pump and tank. The whole dehumidification section is insulated and finished with aluminium sheet.
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