Separation and drying in one apparatus – a dewatering process for difficult-to-filter products!

In the hot filter press, the process steps filtration, filter cake washing, mechanical dewatering by squeezing and thermal drying (vacuum contact drying) are combined in one piece of equipment. The basic design is similar to that of a normal filter press using one packet of diaphragm plates for the usual filtration, washing, and squeezing steps. Hot water, which is sent through the space behind the diaphragm, provides the energy required by the system for drying. At the same time, vacuum is generated via the filtrate lines. With conventional PP plates, the maximum temperature is approx. 80 °C.