我厂甲醇合成塔原采用树枝状六点热电偶,全长八米。因甲醇触媒使用期只有一个多月,所以,触媒更换较为频繁。每次都得将热电偶拆除,往往在拆装时或升温后出现某一焊点或负线断掉,也曾出现多孔瓷珠破 Methanol synthesis plant I used the original dendritic six-point thermocouple, a total length of eight meters. Methanol catalyst life of only one month, so the catalyst replacement more frequently. Have to remove the thermocouple each time, often in the disassembly or after heating up a certain welding or negative off, there have been porous porcelain beads broken