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Why was it rejected?

2009-02-15View Original

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Hello everyone, I have a question. Is it possible that the propanol in the crude methanol storage tank is within specifications, and the propanol in the pre-distillation tower also meets the standards; yet the final product turns out to be substandard? Why is this so? Is it related to the mass of the liquid in the distillation column? There is more in the pre-column, while less is extracted from the pressurized and atmospheric columns. Our company often faces this problem, and every time we conduct an analysis, the results are the same.
Reply #22009-02-15
What’s not up to standard? Same as Bing?
Reply #32009-02-16
Propanol – issues with non-compliance only occurred in that one batch
Reply #42009-02-17
What about your ethanol content? We only require ethanol to be below 10PPM; we have never tested propanol

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Translated at 2026-07-28 05:35:06

Original: https://bbs.hcbbs.com/thread-390476-1-1.html

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