Technology offer : Biodrying of waste, compost and agricultural material using heat recovered from the composting of waste and organic residues
The composting of waste or organic residues allows them to be reused not only as compost but also as a source of renewable energy, an alternative to costly and environmentally harmful fossil fuels.
Our invention can be applied to agronomically non-recyclable waste fractions to produce solid recovered fuel (SRF) at lower cost. The heat generated by the composting of a first batch of waste or organic residue is captured, and then used to simultaneously dry a second batch of waste, compost or digestate.
The invention is based on the quantification of the amount of heat released in outgoing gases in the form of sensible, and especially latent, heat (hot gas with a high water vapour content), and on the potential for 80 % of that heat to be recovered through condensation of the water vapour contained in the outgoing gases. It consists of a gas-gas exchange between the gas flow released during the composting of organic waste or residue and a second, low-humidity gas flow whose increased temperature and high flow rate will heat-dry a second batch of waste material.
Ref : OT-00093
Area of activity : ENVIRONMENT
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