The value of oxygen-containing organic compounds in the Fischer-Tropsch reaction water
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This post was last edited by liaifeng on 2018-9-3 09:12. When separating oxygen-containing organic compounds from the water in the Fischer-Tropsch reaction, the product obtained is ethanol (with a purity of 94%, with the remainder being butyraldehyde and some other components including a small amount of water). I would like to know whether there is a market for this product? Secondly, should the resulting mixture of propanol and butanol be further separated, or considered as an impure alcohol? But if further separation is carried out, its purity will not meet national standards either. So I’m seeking advice here!
Ethanol should have a purity of 99.5%, and we are already able to achieve that.
Well, if ethanol is refined and then components such as butyraldehyde are separated out, this process requires a lot of energy, so it’s probably not very cost-effective from an economic perspective. .
Hello, I’ve seen your posts on Haichuan and it seems like you know quite a lot about coal chemical industry – I really admire that! I would like to ask you for some advice regarding the separation of oxygen-containing organic compounds resulting from FTO side reactions (you mentioned earlier that ethanol can be obtained with a purity of 99.5%). I wonder if this is achieved solely through distillation? Secondly, different raw materials have varying compositions; for example, ethanol, isopropanol, and butyraldehyde all have boiling points that are quite similar to each other. Depending on the proportion of these raw materials used, it is essentially impossible to obtain 99% pure ethanol. I’m not sure what separation process you generally use – such as cutting with methanol-ethanol first, followed by azeotropic distillation, and then an ethanol column; while the methanol column is used to obtain methanol along with compounds such as propanol, propionaldehyde, and acetaldehyde.
There are many approaches for the separation of synthetic water, and numerous patents exist on this topic; however, obtaining a product with high purity still requires experimental verification.
Well, indeed, this requires determining the separation products and methods based on the composition of one’s own raw materials and other factors