| abstract |
Disclosed is a desulfurization system for desulfurizing a hydrocarbon fuel containing a slight amount of methanol and a slight amount of water, wherein desulfurization effect can be maintained over a long time by arranging a Y-type zeolite desulfurizing agent containing at least copper in a former stage, while arranging an X-type zeolite desulfurizing agent containing at least silver in a latter stage. |