Improved drying method using superheated steam in the material to be dried and its use (MODIFIED DRYING PROCESS USING SUPERHEATED STEAM IN THE DRYING MEDIUM, AND ITS USE)

摘要

The invention relates to a method for drying materials containing moisture directly without producing waste gas or waste gas, in particular to materials in the drying field during the flow of high-temperature gas mixture by mixing more than one second dry gas such as nitrogen / or air, The water vapor is removed and the indirectly heated high temperature gas is returned to the drying field.This method has the following characteristics: after passing through the drying area, it is classified from the first gas flow and then cooled, so that at least a part of the classified moisture will condense and be removed from the moisture containing condensate, The circuit in which the residual gas returns to the high temperature gas mixture (the second time).At least a portion of the cooled gas is used as additional work aids for drying and refining.;In addition, the invention can also be applied to any kind of material, especially the modified drying method of the material temperature below 10o ℃.