| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a tar reforming furnace having a high reforming ratio, with a gasification gas sufficiently agitated by formation of whirlpools which are smaller than those of the gasification gas introduced from the tangential direction of the furnace body.SOLUTION: A tar reforming furnace 11 injects a gasification gas and an oxidizer into a furnace body 19 so as to reform the tar of the gasification gas. At the top of the furnace body, a plurality of injection flow channels 23 and 24 along the annular circumferential direction are disposed on the inner peripheral side and the outer peripheral side. The injection flow channel 23 on the inner peripheral side is inclined obliquely downward toward the outside in the radial direction of the annular form, and the injection flow channel 24 on the outer peripheral side is inclined obliquely downward toward the inside in the radial direction of the annular form. At least one of the gasification gas and the oxidizer is introduced in the injection flow channel 23 on the inner peripheral side and the injection flow channel 24 on the outer peripheral side. Consequently, alternate injection directions are formed in the furnace body 19 in the plane view, so that revolving whirlpools proceed downwards.</p> |
