Process Area Event – [I See Now-29]: You Can Do It This Way Too

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In the 1990s, methyl diphenyl ether was produced through the following processes: reaction, neutralization, rough purification, alkaline washing, and fine purification. At that time, a high school student came and saw that the veteran employees could operate various tasks skillfully and seemed to do it with ease. And when it’s time to start operating the equipment oneself, one feels very busy and anxious. On the roughing unit, it is necessary to switch the receiving tanks based on the temperature inside the reactor, the gas phase temperature, and various concentrations: moisture, chlorobenzene, m-cresol, intermediates, and semi-finished products. The requirement for switching to the semi-finished product is that the content of m-methyldiphenyl ether must be 98%. Experienced workers can determine this level without conducting any sampling tests and can directly feed the material into the semi-finished product receiving tank; high school students were very envious of this, as they had to take samples and conduct tests repeatedly, constantly asking how to proceed and how to make such judgments. I said: It requires continuous practice, the accumulation of experience, careful observation of the patterns of material flow inside the viewing tube, and consideration of factors such as temperature and vacuum level. Each time a sample is taken, the conditions at that time should be compared with the test data; over time, you will be able to identify patterns, and then【you can do it this way too】