How to recover methanol from waste liquid?
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The waste fluid discharged from a chemical reaction unit in my company contains a large amount of methanol, about 60%. The rest is water along with less than 3% organic impurities. I want to remove the water from it. What is a good way to do this? I would appreciate any advice from experts.
At atmospheric pressure distillation, fractions are taken at different times; the water present at the beginning can be discarded, while the mixture of water and methanol can be included in the liquid used for the next separation process. In the end, what remains is methanol with very low water content along with the residue in the reactor.
May I ask which company this is? Our firm purchases waste alcohols at favorable prices. Contact number: 13572715041
Methanol and water can be separated most effectively through simple distillation. Technologies and equipment can be found online; it’s a mature process. The investment is minimal.
Simple distillation, segmented collection – we do it the same way
Distillation? Methanol is hydrophilic, so extraction can’t be used
Replying to floor 3: Waste alcohol has low value and is not suitable for long-distance transportation!
Water can be easily removed through distillation, but the organic impurities present pose a challenge; it is first necessary to identify the main impurities involved, and then determine the appropriate distillation process
Reply to 1# #b: Hello, I’m from Shandong and I am involved in the recycling of waste methanol. Where is your factory located? Is it possible to obtain methanol with a low content?
It’s better for you to buy methanol with a low content rather than fusel oil.
60% methanol is not that low either. The crude methanol we produce has a purity of only 80%; if your requirements for methanol quality are not high, simple distillation is sufficient. For example, going to a bankrupt company to buy used distillation columns