| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To stably discharge ash as molten slag to stabilize the properties of reformed gases at that time in the method of gasifying a carbonaceous raw material with oxygen or the like to reform other gases by the heat of the gasified gas. <P>SOLUTION: The method of gasifying a carbonaceous raw material comprises using an oven for gasifying a carbonaceous raw material having a gasification chamber and a slag tap lower space therein and a reforming oven for reforming tar of a tar-containing gas to gases, installed at the latter stage of the gasification oven, and partially oxidizing and gasifying the carbonaceous raw material in the gasification oven to discharge the ash present in the carbonaceous raw material as molten slag into the slag tap lower space, furthermore measuring the pressure difference between the gasification chamber and the slag tap lower space to withdraw the gas within the space from the slag tap lower space when the molten slag adheres to the slag tap to increase the measured value of the pressure difference and, simultaneously, adjusting the amount of the tar-containing gas to be taken into the reforming oven in accordance with the amount of the gas withdrawn. <P>COPYRIGHT: (C)2009,JPO&INPIT</p> |
