Selection of standard alcohol production process
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Alcohol plants that use corn as raw material produce standard-grade alcohol (GB10343-2002) through three-column distillation; the configuration used can be a crude column + washing column + refined column, or a crude column + refined column + methanol column, or a crude column + aldehyde column + refined column. Please explain the reason. Thank you
A three-half-tower direct process consisting of a crude tower, an aldehyde tower, and a refined tower; it belongs to traditional technology, features stable and simple operation, and yields high-quality products, so it is recommended for use. Given the current situation, I would like to inquire about differential pressure distillation as a way to save energy and avoid the need for further modifications