RO94828B1 - Process and reactor for the thermal treatment of coal-bearing materials - Google Patents

Abstract

The invention relates to a process and to a reactor for the thermal treatment of carbon-containing materials containing residual humidity to effect a physical or chemical change in order to produce from these materials products used as fuels. According to the invention, the process eliminates the drawbacks in that the treated material is introduced into a pressure vessel containing several annular crucibles and is stored on the topmost crucible and is then radially transferred along each of the crucibles to a non- an alternating inner and outer direction from a crucible to the next immediately below it, the material being brought into contact with countercurrent reaction gases for preheating at a temperature of 93 ... 260 ° C, after which the preheated material on the crucibles the upper is heated to a high temperature for vaporization of the volatile substances, the reaction gases being extracted from the top of the vessel and the solid reaction product being discharged to the lower part, and in another variant preheating is performed in a separate chamber, the preheated material in this chamber being then inserted into the reaction vessel mentioned. The process reactor according to the invention comprises a pressure vessel delimiting a chamber containing a plurality of overlapped annular flanges comprising a series of upper crucibles angularly inclined downwardly toward the periphery of the chamber defining a drying or preheating zone in which the moisture is extracted , and below the upper crucibles there are arranged a series of lower crucibles defining a reaction zone including