PDF Publication Title:
Text from PDF Page: 003
Ethanol-Water Separation by Pressure Swing Adsorption (PSA) principles of the two processes in both adsorption and desorption [7]. Fig. 1: Principles of Thermal Swing Adsorption (TSA) and Pressure Swing Adsorption (PSA) [7] Desorption step takes rather long time (several minutes to hours) if the thermal swing is used due to slow heat transfer in packed columns while desorption steps takes short time (seconds to minutes) if the pressure swing is used. Despite many researches on the adsorption of water on 3A zeolite and PSA simulation for ethanol-water mixture [8-14], there are limited studies on the experimental PSA process systems [15-18]. The aim of the present work is to construct a small scale pressure swing adsorption (PSA) unit for the separation of the vapor mixture of ethanol-water beyond azeotropic point, using long spiral bed column, packed with commercial 3A zeolite. The effects of the operating parameters, such as adsorption pressure, adsorption temperature and feed flow rate on the performance of PSA unit is to be studied, using 4-steps cyclic operations. The performance is characterized by ethanol product purity, ethanol recovery and ethanol productivity. Experimental Work Figure 2 shows the experimental set- up of the long novel spiral column PSA process. The spiral column is of stainless steel 25 mm diameter and 6 m length. The first three meters act as a vaporizer and the last three meters act as an adsorber filled with one kilogram of 3A zeolite. The spiral coil submerged in oil bath. Four solenoid valves of 6 mm diameter are used. The characteristic of the adsorbent is shown in Table 1. The ethanol purity is measured by Abbe Refractometer, Atago, Japan. Fig. 2: Experimental setup Table 1: Adsorbent characteristics Adsorbent Type Shape Weight Particle diameter Structure Formula Bulk density Bed porosity Zeolite 3A Sphere 1 kilogram 3-5 mm 0.45K2O.0.55Na2O.AL2O3.4.5H2O 779kg/m3 0.41 2 IJCPE Vol.15 No.2 (June 2014) -Available online at: www.iasj.net The parameters considered in the present work are: Operating Adsorption Temperature (Tads): 150, 160 and 170 °C. Operating Adsorption Pressure (Pads): 2, 3 and 4 bar. Feed flow rate (Q): 1, 2 and 3 l/hPDF Image | Ethanol-Water Separation by Pressure Swing Adsorption
PDF Search Title:
Ethanol-Water Separation by Pressure Swing AdsorptionOriginal File Name Searched:
Ethanol-Water-Separation-PSA.pdfDIY PDF Search: Google It | Yahoo | Bing
CO2 Organic Rankine Cycle Experimenter Platform The supercritical CO2 phase change system is both a heat pump and organic rankine cycle which can be used for those purposes and as a supercritical extractor for advanced subcritical and supercritical extraction technology. Uses include producing nanoparticles, precious metal CO2 extraction, lithium battery recycling, and other applications... More Info
Heat Pumps CO2 ORC Heat Pump System Platform More Info
CONTACT TEL: 608-238-6001 Email: greg@infinityturbine.com (Standard Web Page)