External combustion and internal heating type coal retort furnace

摘要

An external combustion and internal heating type coal retort furnace comprises a drying section used for drying raw coal material, a retort section used for retorting the dried raw coal material, a cooling section used for cooling the retorted products from the retort section, and a cold flue gas pipeline used for ducting the cold flue gas produced in the drying section into the cooling section. The said coal retort furnace is energy saving and environmental friendly, and ensures improved retorting efficiency on the whole.