The invention discloses a small-particle four-section
moving bed dry distillation furnace with a
hydrogen-enriched environment and a
dry distillation method of the small-particle four-section
moving bed dry distillation furnace. According to the dry
distillation furnace, a feeding hole is formed in the upper part of a
drying and preheating section, an upper air inlet and a lower air inlet are respectively formed in the middle side and lower side of the
drying and preheating section, and an air outlet is formed in the end, far away from the upper air inlet, of the
drying and preheating section; the drying and preheating section is vertically communicated with a dry
distillation section through a sealing section; a medium-temperature air inlet is formed in the middle side of the dry
distillation section, a high-temperature air inlet is formed in the lower side of the dry distillation section, and an oil gas outlet communicated with an oil gas
recovery system arranged on the outer wall of the dry distillation section is formed in the medium-upper side of the dry distillation section; a cold
coal gas inlet is formed in the middle side of a cooling section, a
coal gas outlet is formed in the upper side of the cooling section, a water inlet is formed in the lower side of the cooling section, and a water outlet is formed in the middle side of the cooling section; and the cooling section is provided with a cooling
heat exchanger communicated with the water inlet and the water outlet. The dry
distillation method comprises the steps of drying and preheating; sealing; carrying out dry distillation; and cooling. The small-particle four-section
moving bed dry distillation furnace with the
hydrogen-enriched environment has the characteristics that the
power consumption is low, the energy
utilization rate and oil yield are high, the quality of an oil product is good, the dust content of oil gas is low, and the
utilization rate of resources is high.