| 摘要 |
PURPOSE: A plasma gasifier is provided to improve gasification efficiency by concentrating pulverized coal to the center of plasma. CONSTITUTION: A plasma gasifier comprises: an electromagnetic wave supplying part generating a previously set frequency of electromagnetic wave; a discharge tube(112) generating plasma by an electromagnetic wave or auxiliary gas; a first gas supplying part(114) injecting a first auxiliary gas formed in a whirl into the discharge tube; a pulverized coal supplying part(116) supplying pulverized coal to the plasma; a nozzle part(118) formed in the upper part of the discharge tube, and generating synthetic gas by a reaction with the plasma and the pulverized coal; and a second gas supplying part(120) injecting a second auxiliary gas flowing along the inner wall of the nozzle part in a parallel direction with the flowing direction of the plasma. The first auxiliary gas is one among oxygen, steam, or mixed gas of oxygen and steam. The second axiliary gas comprises more than one among steam, oxygen, air, or carbon dioxide. The second gas supplying part is formed in the lower part of the nozzle part. The second gas supplying part comprises multiple gas supplying pipes formed to have the inner circumference of the nozzle part be parallel with the flowing direction of the plasma. The multiple gas supplying pipes are arranged along the inner circumference of the nozzle part in an equal interval. The supplying quantity of the second auxiliary gas per unit period supplied from the second gas supplying part, and the supplying quantity of the first auxiliary gas per unit period supplied from the first gas supplying part have a ratio of 2:1-4:1. |
