| 摘要 |
<P>PROBLEM TO BE SOLVED: To achieve good response to the change of a heat generation region due to local heat generation and the change of power generation load, and to improve reliability of control. <P>SOLUTION: A thermal control tube 4 in which a heat medium causing a gas-liquid phase change is encapsulated is disposed in such a way that it vertically penetrates a reaction vessel 1. An electric heater 5 is disposed at the bottom of the thermal control tube 4, and a heat radiator 6 and a cooling fan 7 for sending cold air to the heat radiator 6 are disposed on the top of the thermal control tube 4. A first temperature sensor 8 is provided to the lower part of the thermal control tube 4, a second temperature sensor 9 to an upper part, and a controller 10 is connected to the first and second temperature sensors 8, 9. The controller 10 is also connected to the electric heater 5 and the cooling fan 7, and on the basis of the temperatures of the heat medium measured with the first and second temperature sensors 8, 9, the electric heater 5 and the cooling fan 7 are operated to maintain the temperature of the catalyst within a preset range. <P>COPYRIGHT: (C)2013,JPO&INPIT |
