fuel ethanol distillation section...
TRANSCRIPT
Fuel Ethanol Distillation Section
ECOSTEAM
Mussi Distillation Technology
ECOSTEAM – Fuel Ethanol Distillation Section
Working principles
2
A B
FEED
STEAM
COND.
EtOH
STILLAGE
Column “B” works under
pressure, and itsoverhead vaporsheat column “A” that works under
vacuum.Both columns
produce the samehigh degree
alcohol.
ECOSTEAM – Fuel Ethanol Distillation Section
Main Advantages
3
ECOSTEAM
STEAM CONSUMPTION
MULTI FEEDSTOCK
PRODUCTION MODULARITY
NEW OR REVAMPING
LOW PRESSURE STEAM
ECOSTEAM – Fuel Ethanol Distillation Section
Energy Saving
4
Traditional Atmospheric Plant ECOSTEAM
Optimized energy consumption
• Each column’s reboiler has to be heatedwith boiler steam
• Huge cooling water consumption by overhead condensers
• Multi-effect heat transfer betweencolumns
• Only the low pressure columns needscooling water
Inefficiencies in boiler steam and coolingwater usage
Comparing example: sugar cane fermented mash,boiler steam pressure = 1,5 barg, 127,4°C, raw alcohol @ 92,5%w = 95 ABV
Traditional Atmospheric Plant ECOSTEAM
Consumption 210 kg/E 185 kg/E 170 kg/E Consumption 115 kg/E 110 kg/E 100 kg/E
Feed ethanolcontent
6,4 %w =8 ABV
8 %w =10 ABV
9,6 %w =12 ABV
Feed ethanolcontent
6,4 %w =8 ABV
8 %w =10 ABV
9,6 %w =12 ABV
ENERGY SAVING CONSIDERATIONS
ECOSTEAM – Fuel Ethanol Distillation Section
Multi feedstock
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Each column («A» and «B») can be independently fed by different feedstocks.
i.e. Fermented mash from cereals goes to column «B» while fermented mash from sugarcane molasse goes to column «A».
Both columns produces the same alcohol quality and degree
ECOSTEAM – Fuel Ethanol Distillation Section
Production modularity
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Each column can operate interconnected («B» heats «A») or independently, that is both«A» and «B» heated by boiler steam.
While operating independently, each column can produce at different capacity, fromdifferent feedstocks.
The possibility to run the two plants independently one from the other is also particularlyuseful when a CIP operation is needed, allowing to avoid the complete shutdown of theentire alcohol production line.
ECOSTEAM – Fuel Ethanol Distillation Section
Revamping of existing column
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The ECOSTEAM scheme can also be fitted in an existing plant, revamping the existingcolumns and adding the second new ones, reusing the majority of satellites (heatexchangers, tanks, reboilers, condensers, pumps, etc.)
ECOSTEAM – Fuel Ethanol Distillation Section
Low Pressure Steam
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When the Ecosteam model must be installed in a sugar factory or generally where a hugeamount of low pressure steam (down to __ barg = __ °C) is disposable, the use ofstructured packing inside the columns is adopted, so reducing the pressure drop acrossthe process and allowing a huge money saving.
ECOSTEAM – Fuel Ethanol Distillation Section
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