Gasifying furnace for synthetic gas from coal

The invention discloses a gasifying furnace for synthetic gas from coal. The gasifying furnace comprises a jetting fluidized bed reaction unit, a semi-coke reaction unit and a slag storage unit. The jetting fluidized bed reaction unit comprises a jetting fluidized bed reaction unit body, a gas distribution plate, a coal inlet, a fluidizing gas inlet, a semi-coke outlet and a synthetic gas outlet, wherein a gas inlet chamber is arranged below the gas distribution plate, and the coal inlet, the fluidizing gas inlet, the semi-coke outlet and the synthetic gas outlet are formed in the jetting fluidized bed reaction unit body. The semi-coke reaction unit comprises a semi-coke reaction unit body, a semi-coke inlet, a steam inlet, a secondary fuel inlet and a melt outlet, wherein the semi-coke inlet, the steam inlet, the secondary fuel inlet and the melt outlet are formed in the semi-coke reaction unit body. The slag storage unit is provided with a melt inlet and a slag discharging outlet, wherein the melt inlet is connected with the melt outlet. The gasifying furnace has the advantages of high operation pressure, great loading and unloading capacity and the like and can substantially improve the conversion rate of carbon, so high yield of synthetic gas is realized.