| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a purification system for performing the purification of an anaerobic digestive fermentation gas, capable of eliminating water vapor which becomes a cause of corroding metals due to the dissolution of an acid gas contained in the anaerobic digestive fermentation gas. <P>SOLUTION: The purification system for purifying the anaerobic digestive fermentation gas containing methane, carbon dioxide, a sulfur compound and water vapor for using it as a gas turbine fuel is equipped with a desulfurizing means 1 for eliminating the sulfur compound, a compressing means 20 for compressing the anaerobic digestive fermentation gas from which the sulfur compound is eliminated by the desulfurizing means 1, a cooling means 21 for cooling the anaerobic digestive fermentation gas which is compressed by the compressing means 20, and a drain-discharging means 5d for discharging the drain water produced by the cooling means 21 to the outside of the system, and includes adsorbing columns 30, 31 filled with an adsorbent for adsorbing and desorbing water vapor by a pressure swing adsorption method as a dehumidifying means for eliminating water vapor below a prescribed level from the anaerobic digestive fermentation gas. <P>COPYRIGHT: (C)2004,JPO</p> |
