| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a halide removing device which exactly removes halides such as hydrogen chloride and hydrogen fluoride from a raw material gas manufactured from biomass or waste to the very low concentration of at most several ppm. <P>SOLUTION: The halide removing device includes: a reaction vessel filled up with a halide absorbent (package 32) containing sodium aluminate; and a roughness removing agent feed hopper 22 which supplies the roughness removing agent of slaked lime or the like which absorbs the halides in the raw material gas so that the halides may become the low concentration of dozens of ppm at a flue 21 of the upstream side, wherein the raw material gas is circulated by dry type gas purification processed without lowering the upstream side gas temperature to below the dew point, and the halide is absorbed, thereby the halides in the raw material gas is removed to the very low concentration of at most several ppm. <P>COPYRIGHT: (C)2012,JPO&INPIT |
