From: Bioelectricity versus bioethanol from sugarcane bagasse: is it worth being flexible?
Input | Value | Unit |
---|---|---|
Sugarcane flow | 500 | tonne/h |
Sugarcane TRS (Total Reducing Sugars) | 15.86 | % w/w |
Cleaning section | ||
Sugar losses | 1.5 | % |
Cleaning efficiency | 70 | % |
Water flow | 1 | kg/kg of sugarcane |
Sugar extraction section | ||
Sugarcane bagasse humidity | 50 | % w/w |
Sugar recovery (first mill) | 70 | % |
Sugar recovery (total) | 96 | % |
Duty | 16 | kWh/tonne of fiber |
Water flow | 30 | % w/w |
Sugarcane juice treatment section | ||
CaO flow | 2 | kg/tonne of juice |
CaO concentration | 10 | % w/w |
Heating final temperature | 105 | °C |
Steam used | 53698 | kg/h |
Water losses in flash | 6495.5 | kg/h |
Polymer | 3534 | kg/h |
Polymer concentration | 0.05 | % w/w |
Sugar losses (decanter) | 6.8 | % |
Sludge humidity | 50 | % w/w |
Clarifier temperature (after decanter) | 92 | °C |
Sugar losses (filter) | 5.6 | % |
Filter cake humidity | 70 | % w/w |
Water flow (filter) | 116 | % |
Sugarcane juice concentration section | ||
Evaporators area | 8000 | m2 |
Outlet sugar concentration | 21.4 | % w/w |
Steam consumption | 190584 | kg/h |
Steam produced | 181657 | kg/h |
Pressure of steam produced | 2.5 | bar |
Fermentation section | ||
Fermentation yield | 89 | % |
Yeast concentration (wine) | 14 | % w/w |
Wine ethanol concentration | 9 | °GL |
Yeast concentration (after separation) | 70 | % w/w |
Ration of yeast rich stream / sugar solution | 33 | % w/w |
Ethanol purification section | ||
Specific steam consumption (1G) | 2.7 | kg/L of ethanol |
Specific ethanol production (1G) | 91.6 | L/tonne of sugarcane |
Specific vinasse + phlegm production (1G) | 10.1 | kg/L of ethanol |