PARAMETRIC INVESTIGATION OF FIXED-TRAY, SEMI-CONTINUOUS DISTILLATION COLUMN FOR ETHANOL SEPARATION FROM WATER

2016 ◽  
Vol 78 (11) ◽  
Author(s):  
Nur Atirah Ibrahim ◽  
Muhammad Abbas Ahmad Zaini
Keyword(s):  
Distillation Column ◽  
Ethanol Concentration ◽  
Fermentation Broth ◽  
Distillation Unit ◽  
Reflux Ratio ◽  
Trial And Error ◽  
Parametric Investigation ◽  
Tray Efficiency ◽  
Continuous Distillation ◽  
Ethanol Separation

This work was aimed to evaluate the parameters affecting the separation of model fermentation broth (7 mole% ethanol) using 10-tray, semi-continuous distillation column. Ethanol compositions in distillate and bottoms were determined at different reflux ratios and feed locations. Results show that the distillation of lower ethanol concentration is better carried out at higher reflux ratio with feed charged at the middle or bottom tray for good overall tray efficiency. The distillation unit is able to purify the feed to 78 mole% ethanol in distillate. Through trial-and-error stepping off, about 81 mole% was predicted as optimum ethanol purity at reflux ratio of 2.33, while a lower reflux ratio of 1.44 was estimated for 78 mole%.  Fixed-tray, semi-continuous distillation is a suitable option to concentrate fermentation broth with sufficient ethanol purity. 

ETHANOL SEPARATION USING SEPABEADS207 ADSORBENT

2017 ◽  
Vol 79 (5) ◽  
Author(s):  
Mazin Abdulhusein Beden ◽  
Muhammad Abbas Ahmad Zaini ◽  
Tuan Amran Tuan Abdullah
Keyword(s):  
Ethanol Concentration ◽  
Fermentation Broth ◽  
Ethanol Solution ◽  
Operating Conditions ◽  
Solution Ph ◽  
Original Solution ◽  
Air Temperatures ◽  
Adsorption Data ◽  
Ethanol Adsorption ◽  
Ethanol Separation

This work was aimed at evaluating the ethanol separation using Sepabeads207 adsorbent. A 10 wt% of ethanol solution was used as a model fermentation broth. The separation of ethanol from the solution was performed in a tube containing Sepabeads207 at different operating conditions: temperatures, 20 to 40oC; solution pH, 4 to 7; and contact times, 5 to 25 minutes. Recovery of ethanol via stripping was studied between 15 and 35 minutes, and at different air temperatures of 80 to 95oC. The concentration of liquid ethanol was measured using gas chromatography and refractometer. A higher ethanol concentration by Sepabeads207 adsorption was obtained at 20oC and solution pH 4 for 5 minutes, while the recovery was performed better at 80oC for 15 minutes. By applying these conditions, 10 wt% of ethanol in the solution was concentrated to 46 wt%. The ethanol adsorption data are: i). capacity of 0.22 g ethanol/g adsorbent, ii). selectivity of 7.75 (g ethanol/g water (adsorbed)) / (g ethanol/g water (original solution)), and iii). efficiency of 100%. Sepabeads207 is a promising adsorbent for ethanol separation from the dilute ethanol solution.

scholarly journals Removal of Odors from Milk Protein Hydrolysates using Continuous Distillation Column System.

2004 ◽  
Vol 51 (1) ◽  
pp. 7-12
Author(s):  
Yuzoh Asano ◽  
Yuriko Iiyama ◽  
Tetsuo Kubota ◽  
Hiroshi Ochi ◽  
Teruhiko Mizota ◽  
...  
Keyword(s):  
Milk Protein ◽  
Distillation Column ◽  
Protein Hydrolysates ◽  
Column System ◽  
Continuous Distillation

Reactive Divided Wall Distillation Column: Simulation and Experiment of Methyl Acetate Hydrolysis

2012 ◽  
Vol 468-471 ◽  
pp. 2785-2789 ◽  
Author(s):  
Yan Wang ◽  
He Xu Ma ◽  
Huai Gong Zhu ◽  
Wei Tang
Keyword(s):  
Methyl Acetate ◽  
Distillation Column ◽  
Reactive Distillation ◽  
Molar Ratio ◽  
Reflux Ratio ◽  
Liquid Distribution ◽  
Divided Wall Column ◽  
New Process ◽  
Simulation And Experiment ◽  
Complex Technology

As a combination of divided wall column (DWC) and reactive-distillation column, the reactive divided wall distillation column is a highly complex technology that reaction and separation can occur simultaneously, which can reduce the energy consumption and decrease the costs of captial and operation. This new process was simulated with PROⅡ software and mini plant experiments were implemented. In addition, we investigated the influences of reflux ratio, liquid distribution ratio and molar ratio of ester in water on the conversion rate of methyl acetate and the purity of the product respectively. It could be seen that the trend from experiments was suitable with simulation results.

Asymmetric properties of continuous distillation column dynamics

1972 ◽  
Vol 27 (1) ◽  
pp. 129-136 ◽  
Author(s):  
H. Mizuno ◽  
Y. Watanabe ◽  
Y. Nishimura ◽  
M. Matsubara
Keyword(s):  
Distillation Column ◽  
Column Dynamics ◽  
Continuous Distillation
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