| 摘要 |
A method of processing agricultural materials such as grain, sugar-beet or potatoes. Grinded grain is first mixed with water and after the addition of liquifying and saccharifying enzyme, the risen mash is submitted to fermentation. Sliced sugar-beet is submitted to fermentation and after saccharifying of starch, crush potatoes are submitted to fermentation like in case of grain. The fermented mash is filtered under condition of overpressure on the side of suspension, the colature is conveyed to distillation and the filter cake is predried in the drier under a temperature higher than the temperature of boiling-water given used pressure, from where the by predrying ejected reminders of ethanol with water are conveyed to further cooling down, liquefying and distillation, while the filter cake without ethanol is then dried in the end-drier. In the advantageous practise, the filter cake is washed with water after the filtration, and the liquid phase is pushed out using inert gas. There is an atmosphere of inert gas being maintained in the drier during predrying. In a process of ethanol production for food quality the water solution of ethanol reminders, acquired during predrying, after being cooled down and liquified, is conveyed to the fusel column of technical ethanol. In a process of ethanol production for non-food quality the water solution of the reminders of ethanol acquired during predrying, after being cooled down and liquified, is mixed with the filtrat. In an alternate design grinded grain straw is added to the fermented mash in a proportion of max. 15% of the weight |
