The invention discloses a method for gasification reduction of pulverized
coal and separation and recycling of upgraded
coal. The method comprises following steps: 1), raw
coal is screened and pulverized by a
pulverizer and pulverized coal enters a slack coal
silo; 2), the pulverized coal in the slack coal
silo is dried, then enters a primary gasification reduction device and a secondary gasification reduction device and is reacted sufficiently, an obtained material enters a cold
slag humidification
system and then enters an upgraded coal
silo through a gasification discharging device, and anupgraded
coal product is obtained; 4), ash residues obtained by a gas-
solid separation system is conveyed to the secondary gasification reduction device, and
oil sludge returns to the a secondary gasification device through an
oil sludge conveying device; 5), a non-condensable gas is gasified to supply heat to a
reaction system, and dewatered non-condensable gas and
flue gas with
waste heat supplyheat to a pre-
dewatering device to dry a material; 6),
flue gas containing dust and steam, which is produced by the pre-
dewatering device, is subjected to cloth bag dedusting and condensation
recovery successively under the power action of an induced draft fan.