Pyrolysis gasification system

Abstract

Provided is a pyrolysis gasification system including a hopper, a loading chamber, a gas generating furnace, an ash discharge unit, and an oxygen supply unit, wherein the loading chamber is provided at an upper end thereof with a first sealing gate to seal the loading chamber, and the gas generating furnace is provided at an upper portion thereof with a second sealing gate to seal the gas generating furnace, such that when the raw material is fed into the gas generating furnace, external air is prevented from entering the gas generating furnace and combustion gas in the gas generating furnace is prevented from being discharged to an outside, whereby oxygen is supplied into the gas generating furnace to increase the content and concentration of carbon monoxide and hydrogen in combustion gas generated during pyrolysis, and thus it is possible to increase the production of syngas.

What is claimed is: 
     
         1 . A pyrolysis gasification system comprising:
 a hopper configured such that raw material is fed thereinto;   a loading chamber configured such that the raw material fed into the hopper is temporarily stored therein;   a gas generating furnace configured such that the raw material stored in the loading chamber is fed thereinto, and pyrolyzed and incinerated;   an ash discharge unit configured to discharge ash completely pyrolyzed in the gas generating furnace; and   an oxygen supply unit configured to supply oxygen into the gas generating furnace,   wherein the loading chamber is provided at an upper end thereof with a first sealing gate to seal the loading chamber, and the gas generating furnace is provided at an upper portion thereof with a second sealing gate to seal the gas generating furnace, such that when the raw material is fed into the gas generating furnace, external air is prevented from entering the gas generating furnace and combustion gas in the gas generating furnace is prevented from being discharged to an outside.   
     
     
         2 . The system of  claim 1 , wherein the first sealing gate includes:
 a first door rotatably provided on a first side of the upper end of the loading chamber by a first hinge rod; and   a second door rotatably provided on a second side of the upper end of the loading chamber by a second hinge rod, and disposed to face the first door,   wherein the first hinge rod and the second hinge rod are rotated by an elastic force of a spring or a drive motor.   
     
     
         3 . The system of  claim 1 , wherein the second sealing gate includes:
 a door member provided at a lower end of the loading chamber and configured to be linearly moved in a horizontal direction to open and close an inlet of the gas generating furnace; and   a driving unit configured to linearly move the door member,   wherein the driving unit includes:   a wire connected to a front and a back of the door member;   a drive roller disposed in front of the door member and configured such that the wire is wound therearound;   a driven roller disposed behind the door member and configured such that the wire is wound therearound; and   a drive motor connected to the drive roller to rotate the drive roller.   
     
     
         4 . The system of  claim 1 , wherein the oxygen supply unit includes:
 a first nozzle configured such that multiple nozzles are provided on a wall of a lower gas generating furnace while being spaced apart from each other at a predetermined interval to uniformly supply oxygen into the lower gas generating furnace;   a second nozzle configured to inject oxygen directly toward a bunting portion of the raw material by increasing injection pressure compared to the first nozzle;   a first supply path provided on an outer wall of the lower gas generating furnace and connected to the first nozzle to supply oxygen to the first nozzle; and   a second supply path connected to the second nozzle to supply oxygen to the second nozzle.   
     
     
         5 . The system of  claim 4 , wherein the first nozzle is provided with a first nozzle passage, and
 the first nozzle passage is provided at an end portion thereof with a first nozzle opening opened at a predetermined angle such that the oxygen injected into the first nozzle passage diffuses into the gas generating furnace.   
     
     
         6 . The system of  claim 5 , wherein the second nozzle is inserted into the first nozzle passage, and is provided with a second nozzle passage having a diameter smaller than a diameter of the first nozzle passage, and
 the second nozzle passage is provided at an end portion thereof with a second nozzle opening formed to be narrower than the second nozzle passage so as to increase oxygen injection pressure.   
     
     
         7 . The system of  claim 1 , wherein the ash discharge unit includes:
 a drum rotatably provided in an ash outlet formed at a lower end of a lower gas generating furnace to discharge ash;   a belt conveyor disposed at a location below the drum to move the ash discharged through the drum; and   a water chamber provided at a lower portion of the lower gas generating furnace with water filled therein, and configured such that an end portion of the ash outlet of the lower gas generating furnace is sunken under the water to prevent external air from entering the gas generating furnace through the ash outlet.   
     
     
         8 . The system of  claim 7 , wherein the drum is provided with inflow grooves at predetermined intervals to receive ash therein, and
 a drive shaft of the drum is connected to a drive motor.   
     
     
         9 . The system of  claim 7 , wherein the belt conveyor is provided in the water chamber and disposed to be sunken under the water.