As raw materials for plants with a capacity of 15000-20000 dal/day (40000-53000 tons/year), both starch-containing raw materials (grain, flour) and sugar-containing raw materials (beet molasses, sugar juice, sugar cane, sugar beet, etc.) can act as raw materials. It is possible to produce rectified and dehydrated ethanol separately, or in a percentage (for example, 25% rectified and 75% dehydrated). Complex processing of starch-containing raw materials is recommended. A full cycle of processing with the use of recuperative and recycling cycles is mandatory. The number of branches is from 10 to 11.
The general production technology and the number of branches are given here.
The hourly productivity of the equipment of department 01 should ensure the acceptance of the required amount of grain, taking into account the coefficients of hourly and daily unevenness, and be AT LEAST 150.0 ... 200.0 tons, and department 02-cleaning and processing/drying of grain and its storage for 0.5 ... 12 months, depending on local conditions.
For unloading on-board vehicles, car dumpers are used. Unloading of grain from dump trucks is carried out by gravity into the receiving bunkers. All grain entering the plant with a more normalized clogging should be cleaned on grain cleaning machines to conditions that meet the intended purpose.
Grain is distributed in warehouses STRICTLY according to crops and quality characteristics. The capacity of an elevator or a warehouse for floor storage of grain should be AT LEAST 30 ... 40 thousand tons.
2.1.4. Department 04 - department of boiling and saccharification The batch is pumped from department 03 to department 04, where in hydrofermentation treatment devices (GDFO), under the action of enzyme preparations, both introduced into the batch and additionally introduced into the GDFO, the batch is liquefied and saccharified to form a wort.
The finished wort is sent for fermentation to the department 05-yeast fermentation department, part of the wort is sent for the cultivation of industrial yeast.