TEMPERATURE CONTROL DEVICE OF HIGH PRESSURE STEAM FOR AUTOCLAVE FEED, AND TEMPERATURE CONTROL METHOD USING THE SAME

摘要

PROBLEM TO BE SOLVED: To provide a temperature control method by which, even if the feed amount of high pressure steam varies owing to the variation of treatment conditions in an AC, an operation can stably be continued in the AC.;SOLUTION: There is provided a temperature control method of high pressure steam fed to an autoclave via a steam feed line with a desuperheater. In the steam feed line, an insertion type thermometer 6 and a contact type surface thermometer 7 are installed within the range of 20 to 100 m from a water injection nozzle 2 of the desuperheater to the downstream side, and, in the case of a low load operation where the feed amount of the high pressure steam is 50% or lower of the designed flow rate of the desuperheater, the insertion type thermometer 6 is used, and in the case of a high load operation where the feed amount of the high pressure steam exceeds 50% of the designed flow rate, the contact type surface thermometer 7 is used.;SELECTED DRAWING: Figure 1;COPYRIGHT: (C)2019,JPO&INPIT