| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a desulfurization apparatus wherein the outgassing of vaporized kerosene toward the downstream side and the outside of a desulfurizer is prevented even at the time of the anomaly of a back pressure valve and the operation of a safety valve. <P>SOLUTION: Back pressure valves 20a, 20b are installed in parallel to a desulfurized kerosine line 24 on the downstream side of a kerosene desulfurizer 19 and electromagnetic valves 25a, 25b are installed on the downstream side of the back pressure valves, respectively. Usually, the pressure of the kerosene desulfurizer 19 is maintained by the common back pressure valve 20a by opening solely the common electromagnetic valve 25a. When the common back pressure valve 20a is in anomaly and pressure reduction of the desulfurizer is detected by a pressure switch 27 installed on the inlet side of the kerosene desulfurizer 19, the pressure of the kerosene desulfurizer 19 is maintained by the back pressure valve 20b for abnormal conditions by opening solely the electromagnetic valve 25a for abnormal conditions. A condenser 22 is installed on the outlet side of a safety valve 21. The vaporized kerosene 18a outgassed through the safety valve 21 from the kerosene desulfurizer 19 reduced by action of the safety valve 21 is effectively used by recovering through condensing and reliquefying the same by the condenser 22 and feeding the same again to the kerosene desulfurizer 19. <P>COPYRIGHT: (C)2009,JPO&INPIT |
