The purity of ethylene glycol produced by the coal-to-ethylene glycol method is sufficient, but its light transmittance does not meet the requirements; it’s not clear what the cause of this is
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The purity of ethylene glycol produced by the coal-to-ethylene glycol method is sufficient, but its light transmittance does not meet the requirements; I’m not sure what the consequences of that are No mechanical impurities
The substandard light transmittance may be due to a high content of aldehydes. Aldehydes are generally produced as a result of leaks in the vacuum tower, where air enters the tower and reacts with high temperatures to form aldehydes; it’s also possible that they end up in ethylene glycol during storage or other processing steps. Analyze to determine the levels of aldehydes and iron respectively