Method for ultra -dehydrating thickened or pasty biomass products and equipment to implement the method

摘要

"Method for ultra -dehydrating thickened or pasty biomass products and equipment for implementing the method" refers to a method for ultra -dehydrating thickened or pasty biomass products, in particular sludge from sewage treatment plants, according to Q. That products in particular are secured from 4% to 25%Are subjected to the following steps: Hydrothermal charring treatment including pressurisation (1, 2) and thermal conditioning (30) for a duration within a closed reactor (4);Followed by dehydration of products by a piston press (12),Dryness of more than 50%;The temperature of the product upstream of the dehydration in the piston press by being regulated by cooling between 40 (c) and 90 (c) advantageously around 70 (c) in order to optimise the filtering capacity in the piston press; the steps of the method being carried out in a confined space, makes While avoiding the release of odors into the atmosphere.