Alcohol distillation process
Thread Content
I’ve seen various versions of the processes for alcohol distillation described in different books, and each version uses a different name for it; this has confused me. I wonder if they’re all essentially the same thing, with only different names I’m looking for an answer. Also, I saw that an alcohol distillation process involves several tower units in sequence: a crude distillation tower, a low-boiling-point tower, a rectification tower, a methanol removal tower, and a high-quality product tower. I would like to know whether the low-boiling-point tower mentioned is the aldehyde removal tower ? Generally, isn’t it composed of a crude distillation tower, an aldehyde removal tower, and a distillation tower? I earnestly ask experts for some guidance
Alcohol has not been produced there. From your description, it seems that the process involves three stages: a crude distillation tower, an aldehyde removal tower, and a distillation tower. In the first step, organic substances are vaporized from the mother liquor; in the second step, low-boiling-point organic substances (aldehydes) are removed; and in the third step, alcohol is distilled. As for the various distillation processes that have been identified, different brewing or synthesis processes may result in different impurity compositions, as well as different combinations of distillation methods. Although the approaches used vary, the underlying principle remains the same
I think the essence should be the same. Thank you for the explanation
High-quality towers should be used for further purification. No matter what the name is, the principle is the same: you just need to figure out the component that needs to be removed from each tower, as well as why it is arranged in that way.
The production processes for fuel ethanol and edible alcohol are different; the higher the requirements, the more processing steps are needed, and it is normal for some processes to involve several distillation columns.
Fuel ethanol is distilled using three columns, where a direct heat source heats Column 1; Column 1 in turn heats Column 2 (which is a combined column with its lower part serving as a mash column); and Column 2 heats Column 1 crude. (The thick tower 1 is a combined tower; its upper part can be referred to as the aldehyde removal tower.)
Alcohol has not been produced there. From your description, it seems that the process involves three stages: a crude distillation tower, an aldehyde removal tower, and a distillation tower. In the first step, organic substances are vaporized from the mother liquor; in the second step, low-boiling-point organic substances (aldehydes) are removed; and in the third step, alcohol is distilled. As for the various distillation processes that have been identified, different brewing or synthesis methods may result in different impurity compositions, as well as different combinations of distillation techniques. Although the specific combinations vary, the underlying principle remains the same. That’s correct, thank you.