Patent ID: 7918973
Filing Date: 2011-04-05
Classification: C10B,Y02E

Abstract:
1. A process for treating solid organic materials comprising: introduction of crushed material into a reactor column having a lower part and an upper part; injection of hot gases with low oxygen content having a temperature of 170° C. to 370° C. into the lower part of the reactor column to heat said material, said material laying on a grid that moves horizontally, wherein said material is cooler in an upper part of said reactor column; transfer of gases through the reactor column with an exhaust gas recycling circuit incorporating a hot gas generator, burner, supercharger and reinjection of recycled gases; continual monitoring and comparison of a first temperature of the hot gases before the gases are injected into the lower part of the reactor column and a second temperature of a layer of the material located in an area immediately above the grid of the reactor column; and collecting mineral material from the lower part of the reactor column by controlling the moving grid when said first temperature and said second temperature are identical or virtually identical; wherein the combination of oxygen content and temperature deters combustion and promotes distillation in the reactor column.