The color code of phenol after distillation is not good
Thread Content
New student issues, everyone please help. Thank you. For the phenol propylate production unit using the isopropylbenzene method, the color grade of the distilled product is not good; the spectrophotometer in our team measures a value of 20, while visual inspection gives a value of 10. The specified control limit is below 5. As for other parameters, the melting point is 40.80, and the water content is 50 PPM. Two-shift system; his shift is 5 or less than 5
Hey everyone, come by and take a look. Thanks!
Ask yourself and answer: In other tanks, the separation of oil and water in the return tank is not effective. The solution is to maintain the temperature of the return tank at over 80 degrees, while also adding condensed water; since water is denser than oil, the return flow gradually replaces the oil. Me: The optimization of operations in the hydrocarbon removal tower only provides temporary solutions, not a permanent fix. Either the direct or the crude propylene operation parameters have not been met; too much AMS has entered. As long as the crude propylene operation is properly managed, there’s no need to add water later. Incidentally, the color codes for this batch are 5 by visual inspection, 7 or 5 by instrument measurement; 10 by visual inspection, 13 or 12 by instrument measurement. He estimated it by eye
:) Looking back, it’s actually kind of interesting
I support the original poster; they are truly dedicated to their work – I admire that. I’m not sure whether it’s Takahashi, Yanhua, Jihua, or Lanxing… Could we get to know each other?