ERU - 2008

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item: Conference-Abstract
Improvement of efficiency of bio-ethanol manufacturing process
(2008) Cooray, PLHM; Perera, DHN
Many distilleries where potable-quality ethanol spirit is manufactured contain a hydro-extractive distillation column. Addition of water as the extractive agent here results in a large dilution of ethanol, and subsequently, a higher energy consumption at the rectification column. By means of computer-aided simulation, it was found that the hydro-extractive distillation step could be effectively replaced with a high-reflux distillation step. It was also found that application of this result to a working distillery in Sri Lanka would result in an energy saving of 251 kW.
item: Conference-Abstract
Manufacture and Usage of Fuel Ethanol in Sri Lanka- A Feasibility Study
(2008) Cooray, PLHM; Perera, DHN
A 10 volume % blend of ethanol in petrol is the optimum product to introduce ethanol onto Sri Lankan fuel market. Ethanol in such a blend can also serve as an octane-enhancing additive. As a result, the value of ethanol is always higher than that of petrol. Even with no subsidies from the government, it is profitable for Sri Lankan distilleries to manufacture dehydrated fuel ethanol in the place of potable quality spirit, which they currently manufacture.