Recovering methanol from crystallization mother liquor?
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The 100 m3/d crystallization mother liquor contains 3% carbofuran, 10% methanol, hydrochloric acid, and 0.1% dichloroethane, with a pH of less than 2. What is the best process to recover the methanol from this liquid? This post was last edited by chinazwr on 2009-4-16 22:08]
For this suggestion, it would be best to find a professional company to design a plan on how to handle it.
This post was last edited by Hengshan Budaoweng on 2009-7-17 at 14:58. The crystallization mother liquor with a flow rate of 100 m3/d contains 3% fenitrothion, 10% methanol, hydrochloric acid, and 0.1% dichloroethane; its pH is less than 2. What is the best process to recover the methanol from this mixture? (The physicochemical properties of carbofuran are as follows: it is soluble in water, slightly soluble in methanol and ethanol, and insoluble in benzene and chloroform.) ； Melting point (°C): 179–181 ； No data is available on the boiling point; it is recommended to first neutralize and remove the acid from the system before proceeding with distillation. The products at the top of the tower are methanol and a small amount of dichloroethane, while the products at the bottom of the tower are water, carbofuran, and salts. If carbofuran needs to be recovered, it should be checked whether it can crystallize out from the residue.