Thermally assisted mechanical dehydration method for e.g. paper sludge, in hydraulic press, involves heating product at temperature within duration ranging between five minutes and hours when pressure is lower than seven bars

摘要

The method involves heating a product to be dehydrated at temperature lower than the temperature of evaporation of a liquid e.g. water, to be extracted, within a duration ranging between 5 minutes and hours when pressure is lower than 7 bars. The product is heated by conduction from a heated portion of a wall in a compression and/or filtration device. The heated portion of the wall is set to temperature ranging between 40 and 90 degree Celsius.