Industrial Ethanol from Molasses
Introduction
Indian project consultant offers the technology to manufacture industrial ethanol from molasses, a bye-product of sugar industry. It covers by products like CO2, biogas, powder and ash and also proposes a zero effluent, complete water recycle and continuous plant operation throughout the year.
Process
The molasses containing approximately 44% fermentable sugars are diluted and fermented. The broth, which contains 6-8% ethanol besides 8-9% solids, is subjected to stripping and rectification columns where the alcohol of 95% purity is recovered. The stripping column bottom liquid rich in BOD and COD is treated in biomethanation plant to obtain biogas. The liquid from biomethanation plant containing 5% solids is concentrated to 40% in evaporators. The concentrated mother liquor is dried as powder in a spray dryer. The CO2 produced is collected and bottled.
The list of major equipment is as follows
- Fermentation yeast vessels
- Prefermenters
- FermentorsCO2 plant
- Stripping and rectification columns
- Condensors and beer heater
- Plate heat exchangers
- Biomethanation plant
- 5 stage evaporation system
- Spray dryer
Areas of Application
Chemical industry.
The applications of products/bye-products are as follows
- Ethanol :Used as starting material for manufacture of acetic acid, acetic
- anhydride, ethyl acetate, dyes, etc.
- Carbondioxide : Used in beverage industry
- Biogas : as fuel
- Powder : as fuel and fertiliser
- Powder ash : as fertiliser
Advantages
- No pollution problem
- Continuous trouble free operation
- No storage of waste water needed
- Total water recycle
- Complete utilisation of resources
Production Capacity
30 KL/day (Technology for higher capacity plants can also be provided)
Transfer Forms Technology transfer, know-how
For further information please contact
Asian and Pacific Centre for Transfer of Technology
P O Box 4575
Qutab Institutional Area
New Delhi - 110 016, India
Tel : +91-(0)11-6856276
Fax : +91-(0)11-6856274
Email: rvijh@apctt.org
