METHOD FOR DRYING AND PRODUCING MICROPOROUS PARTICLES AND A DRYING DEVICE

摘要

The invention relates to a method for drying microporous particles containing fluid in which the heat required for increasing the temperature is supplied by means of convection by reducing the interfacial tension of the fluid, preferably to 0 to 1/10, especially to 0 to 1/20, pertaining to the interfacial tension of the fluid at room temperature, by correspondingly increasing the temperature when the pressure of the fluid is at a near-critical to supercritical level. The invention also relates to a method for producing microporous, spatially cross-linked particles in which said drying method is applied. In addition, the invention relates to a device for carrying out the drying method. The device comprises a pressure vessel having an inner vessel and a pressure-carrying outer vessel. Said device also comprises suited measuring and regulating devices as well as pumping and heat exchange devices, whereby the inner vessel is provided for accommodating the particles which are to be dried. A gap is provided between the inner and outer vessels.