Ozonation of 2-Chlorophenol in Aqueous Solution in a Novel Rotating Packed Contactor

2014 ◽  
Vol 17 (1) ◽  
Author(s):  
Young Ku ◽  
Chia-Ying Wu ◽  
Wei-Ming Hou
Keyword(s):  
Decomposition Rate ◽  
Rate Ratio ◽  
Liquid Flow Rate ◽  
Packed Bed ◽  
Flow Rate Ratio ◽  
Rotor Speed ◽  
Operational Conditions ◽  
Rotating Packed Bed ◽  
Gas Liquid Flow ◽  
Ozonation Process

AbstractA modified rotating packed contactor was designed and evaluated for the mass transfer of ozone and the ozonation efficiency of 2-chlorophenol under various operational conditions. The rotating packed contactor was composed of an immobilized disc and a rotating packed disc. Both the overall ozone transfer coefficient and decomposition rate of 2-chlorophenol by ozonation process in the modified rotating packed bed were enhanced with increasing rotor speed or decreasing gas/liquid flow rate ratio. The decomposition rate of 2-chlorophenol was accelerated by increasing H

CO2 Capturing by MDEA-PZ-TETA in a Rotating Packed Bed

2014 ◽  
Vol 881-883 ◽  
pp. 645-648
Author(s):  
Mei Jin ◽  
Li Yan Zhou ◽  
Ping Lu ◽  
Jin Huang Wang ◽  
Guo Xian Yu
Keyword(s):  
Flow Rate ◽  
Gas Flow ◽  
Liquid Flow Rate ◽  
Packed Bed ◽  
Liquid Temperature ◽  
Gas Flow Rate ◽  
Rotating Speed ◽  
Rotating Packed Bed ◽  
Absorption Performance ◽  
Absorption Condition

The absorption performance of CO2 using MDEA-PZ-TETA ternary absorbent in a rotating packed bed was investigated. The effects of the concentration of the ternary absorbent, the absorbing liquid temperature, the rotating speed, the liquid flow rate and gas flow rate on the absorption performance of CO2 were discussed in detail. The experimental results showed that the optimum absorption condition was the absorbent concentration of 0.05 mol/L, the absorption temperature of 290 K, the rotating speed of 454 rpm and the ratio of gas to liquid of 1.2, which could provide a molar absorption saturated capacity of 1.3688 molCO2/molAm and a satisfying CO2 absorptivity of 93.18%.

Modeling Ozonation Process with Pollutant in a Rotating Packed Bed

2005 ◽  
Vol 44 (1) ◽  
pp. 21-29 ◽  
Author(s):  
Y. H. Chen ◽  
C. Y. Chiu ◽  
C. Y. Chang ◽  
Y. H. Huang ◽  
Y. H. Yu ◽  
...  
Keyword(s):  
Packed Bed ◽  
Rotating Packed Bed ◽  
Ozonation Process

scholarly journals Simultaneous removal efficiency of H2S and CO2 by high-gravity rotating packed bed: Experiments and simulation

2021 ◽  
Vol 19 (1) ◽  
pp. 288-298
Author(s):  
Lien Thi Tran ◽  
Tuan Minh Le ◽  
Tuan Minh Nguyen ◽  
Quoc Toan Tran ◽  
Xuan Duy Le ◽  
...  
Keyword(s):  
Removal Efficiency ◽  
Flow Rate ◽  
Gas Flow ◽  
Liquid Flow Rate ◽  
Packed Bed ◽  
High Gravity ◽  
Gas Flow Rate ◽  
Solution Ph ◽  
Rotating Speed ◽  
Rotating Packed Bed

Abstract This study explores the possibility of applying high-gravity rotating packed bed (HGRPB) in removing H2S and CO2 from biogas. Ca(OH)2 aqueous solution was used as the absorbent in this study. Different experimental conditions including solution pH, rotating speed (R S) of HGRPB, gas flow rate (Q G), and liquid flow rate (Q L) were investigated with respect to the removal efficiency (E) of H2S and CO2. The experimental and simulated results show that the optimal removal efficiency of H2S and CO2 using HGRPB achieved nearly the same as 99.38 and 99.56% for removal efficiency of H2S and 77.28 and 77.86% for removal efficiency of CO2, respectively. Such efficiencies corresponded with the following optimal conditions: a solution pH of 12.26, HGRPB reactor with the rotating speed of 1,200 rpm, the gas flow rate of 2.46 (L/min), and the liquid flow rate of 0.134 (L/min).

An experimental study of gas phase back mixing under the counter-current gas-liquid flow on a vertical expanded metal sheet packing by static tracer technique

1980 ◽  
Vol 45 (1) ◽  
pp. 214-221
Author(s):  
Jan Červenka ◽  
Mirko Endršt ◽  
Václav Kolář
Keyword(s):  
Gas Phase ◽  
Flow Model ◽  
Plug Flow ◽  
Packed Bed ◽  
Metal Sheet ◽  
Concentration Profiles ◽  
Expanded Metal ◽  
Gas Liquid Flow ◽  
Counter Current ◽  
Back Mixing

Gas phase back mixing has been measured in a column packed with vertical expanded metal sheet under the counter-current flow of gas and liquid by the static method using a tracer. The observed experimental concentration profiles has not confirmed our earlier proposed model of back mixing, based on the concentration profiles in absorption runs. These profiles do not even conform with the axially dispersed plug flow model currently used to describe axial mixing in packed bed columns. The concentration profiles may be described by a combination of the axially dispersed plug flow model with back flow.

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