| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a method in which coal gas having a low tar content can be produced and coal can be gasified with high production efficiency. <P>SOLUTION: The method uses a coal gasification reactor 4 including: a lower part reaction container 11 inside which a containing space 11a is formed; and an upper part reaction container 13 which is provided above the lower part reaction container 11 and in which a vertically extending through-hole 12 in communication with the containing space 11a of the lower part reaction container 11 is formed. In the method, hot gas is generated by a partial oxidation reaction by supplying coal, oxygen, and water vapor into the lower part reaction container 11, and the coal gas including hydrogen gas and carbon monoxide gas is produced by supplying new coal into the upper part reaction container 13 while introducing the hot gas thereinto and by performing pyrolysis of the newly supplied coal, wherein temperature of the coal gas flowing from the exit of the upper part reaction container 13 is controlled to be 1,000°C or more by increasing and decreasing the supplied amount of the new coal which is supplied into the upper part reaction container 13. <P>COPYRIGHT: (C)2013,JPO&INPIT |
