| abstract |
The present invention aims to simplify and reduce the size of the structure, maintain desired desulfurization efficiency and desulfurization performance in a wide operating range, improve durability, and stably supply desulfurized raw fuel. enable. A desulfurization apparatus 14 has a raw fuel passage 64 through which raw fuel is circulated and is provided in a filling chamber 66 filled with a desulfurizing agent 65, and on the upstream side of the filling chamber 66, and the raw fuel is supplied to the desulfurization device. A supply chamber 68 for supplying the raw fuel passage 64 evenly and a discharge chamber 70 provided downstream of the filling chamber 66 for discharging the raw fuel from the raw fuel passage 64 evenly. The raw fuel passage 64 includes first and second reversing portions 64a and 64b that reverse the flow direction of the raw fuel, and the downstream passage sectional area is set smaller than the upstream passage sectional area. [Selection] Figure 4 |