DRY DISTILLATION DEVICE AND METHOD FOR COAL WITH WIDE PARTICLE SIZE DISTRIBUTION

摘要

A dry distillation device for coal with wide particle size distribution, a dry distillation device group and a dry distillation method based on the device. The device comprises a semicoke outlet (1), a combustion heating chamber (3), a coal feed port (5) and a pyrolysis gas discharge pipe (4). Two layers of division plates are disposed in the dry distillation device. A pyrolysis gas channel (2) is formed between the two layers of division plates, and holes are disposed on the division plate, so as to form a gas flow path from a fuel bed to the pyrolysis gas channel (2). Further, an internal component having fine heat transfer performance and made of a high-temperature-resistance material may be disposed in the dry distillation device, so as to strengthen heat transfer of a heating wall on the fuel bed and inside the fuel bed. Because the pyrolysis gas channel is added in the dry distillation reaction device, gaseous products generated in the coal dry distillation process can overflow in time. At the same time, by disposing the internal component, heat and mass transfer effects are improved, a secondary reaction is reduced, and tar yield and quality are further improved.