Experimental Study on Mass Transfer Performances in a New Rotating Packed Bed

Based on the vapor-liquid equilibrium principle, a new rotating packed absorption tower was presented against some traditional gas-liquid countercurrent tower defects. An experimental device was built to test CO2 absorption efficiency in the packed absorption tower under the given experimental conditions. The experimental results show that the new packed absorption tower can capture the simulated flue gas CO2 and have a higher efficiency 87.8%.

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Simultaneous Absorption of SO2 and NO Using Sodium Chlorate/Urea Absorbent in a Rotating Packed Bed

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.908.187 ◽

2014 ◽

Vol 908 ◽

pp. 187-190

Author(s):

Mei Jin ◽

Guo Xian Yu ◽

Fang Wang ◽

Ping Lu

Keyword(s):

Removal Efficiency ◽

Flow Rate ◽

Flue Gas ◽

Gas Flow ◽

Packed Bed ◽

Sodium Chlorate ◽

Experimental Conditions ◽

Flow Rates ◽

Simultaneous Absorption ◽

Rotating Packed Bed

In this work, simultaneous absorption of SO2and NO from N2-NO-SO2simulated flue gas using sodium chlorate as the additive and urea as the reductant was investigated experimentally in a rotating packed bed. In RPB, various rotational speeds, gas flow rates and liquid flow rates were studied by means of the removal efficiency of SO2and NO. The experimental results showed that the removal efficiency of SO2was higher than 99.00% under various experimental conditions and, at the same time, the removal efficiency of NO exhibited different results under various experimental conditions. The simultaneous NO removal efficiency of 82.45% and the SO2removal efficiency of 99.49% could be obtained under the N2flow rate of 0.5 m3/h, SO2flow rate of 6 mL/min, the NO flow rate of 4 mL/min, the rotational speed of 460 rpm and the absorbent flow rate of 40 L/h.

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Performance of Sodium Chlorite/Urea on Simultaneous Desulfurization and Denitrification in a Rotating Packed Bed

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.908.183 ◽

2014 ◽

Vol 908 ◽

pp. 183-186 ◽

Cited By ~ 1

Author(s):

Hong Guan Wu ◽

Mei Jin ◽

Fang Wang ◽

Guo Xian Yu ◽

Ping Lu

Keyword(s):

Removal Efficiency ◽

Flow Rate ◽

Flue Gas ◽

Packed Bed ◽

Sodium Chlorite ◽

Experimental Conditions ◽

Flow Rates ◽

Rotating Packed Bed ◽

Removal Efficiencies ◽

Simultaneous Desulfurization And Denitrification

Performance of simultaneous desulfurization and denitrification from N2-NO-SO2simulated flue gas using sodium chlorite as the additive and urea as the reductant in a rotating packed bed was investigated. In RPB, various rotational speeds, the flow rates of SO2, the flow rates of NO and the liquid flow rates were studied by means of the calculation of the removal efficiencies of SO2and NO. The experimental results showed that the removal efficiency of SO2was higher than 99.00% under various experimental conditions, while the removal efficiency of NO exhibited different results. A better simultaneous desulfurization and denitrification behavior could be obtained under the conditions of a SO2-NO-N2simulated flue gas with the ratio of SO2/NO/ N2=6:4:8.33(v), a rotational speed of 460 rpm and an absorbent flow rate of 120 L/h.

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Multilevel cross flow rotating packed bed to enhance gas film control mass transfer process

Chemical Engineering and Processing - Process Intensification ◽

10.1016/j.cep.2021.108321 ◽

2021 ◽

Vol 161 ◽

pp. 108321

Author(s):

Qing-Qing Duan ◽

Zhi-Guo Yuan ◽

You-Zhi Liu ◽

Shan-Shan Duan ◽

Xi-Fan Duan

Keyword(s):

Mass Transfer ◽

Transfer Process ◽

Cross Flow ◽

Mass Transfer Process ◽

Packed Bed ◽

Rotating Packed Bed

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Mass transfer intensification mechanism of Al2O3 sphere packing in a rotating packed bed

Chemical Engineering Journal ◽

10.1016/j.cej.2021.130953 ◽

2021 ◽

pp. 130953

Author(s):

Chi Ma ◽

Zhangnan Wen ◽

Baochang Sun ◽

Yong Luo ◽

Guangwen Chu

Keyword(s):

Mass Transfer ◽

Sphere Packing ◽

Packed Bed ◽

Rotating Packed Bed ◽

Mass Transfer Intensification

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Influence of Gas-Liquid Distribution Inducer on Mass Transfer Coefficient in Rotating Packed Bed

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.908.277 ◽

2014 ◽

Vol 908 ◽

pp. 277-281

Author(s):

Fei Wu ◽

Jie Wu ◽

Mei Jin ◽

Fang Wang ◽

Ping Lu

Keyword(s):

Mass Transfer ◽

Transfer Coefficient ◽

Mass Transfer Coefficient ◽

Flow Rate ◽

Rotor Blade ◽

Gas Flow ◽

Packed Bed ◽

Contact Length ◽

Liquid Distribution ◽

Rotating Packed Bed

Based on acetone-H2O system, the influence of the gas-liquid distribution inducer on the mass transfer coefficient in the rotating packed bed with the stainless steel packing was investigated. Furthermore, the absorption performance was also obtained under the experimental condition of the rotational speed of 630 rpm, the gas flow rate of 2 m3/h and the liquid flow rate of 100 L/h in the rotating packed bed with different types and different installation ways of the distribution inducer. The experimental results showed that the volumetric mass transfer coefficient Kyα per unit contact length of gas-liquid was increased by 8.6% for the forward-curved fixed blade, by 19.8% for the backward-curved rotor blade and by 33.2% with the combination of the straight radial rotor blade and the backward-curved fixed blade, respectively. Furthermore, when the gas flow rate was 2.5 m3/h, Kyα per unit contact length of gas-liquid was increased by 2.9% for the forward-curved fixed blade, by 25.3% for the backward-curved rotor blade, by 42.7% for the combination of the straight radial rotor blade and the backward-curved fixed blade, respectively. The results indicated that the distribution inducer play an important role on the improvement of the mass transfer coefficient in acetone-H2O system.

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Polymerization of Isobutylene in a Rotating Packed Bed Reactor: Experimental and Modeling Studies

Applied Sciences ◽

10.3390/app112110194 ◽

2021 ◽

Vol 11 (21) ◽

pp. 10194

Author(s):

Wenhui Hou ◽

Wei Wang ◽

Yang Xiang ◽

Yingjiao Li ◽

Guangwen Chu ◽

...

Keyword(s):

Strong Dependence ◽

Average Molecular Weight ◽

Packed Bed ◽

Packed Bed Reactor ◽

Mixing Efficiency ◽

Polymerization Temperature ◽

Analysis Method ◽

Rotating Speed ◽

Rotating Packed Bed ◽

The Given

Polymerization of isobutylene (IB) for synthesizing highly reactive polyisobutylene (HRPIB) is characterized by a complicated fast intrinsic reaction rate; therefore, the features of its products exhibit a strong dependence on mixing efficiency. To provide uniform and efficient mixing, a rotating packed bed was employed as a reactor for polymerization of IB. The effects of operating parameters including polymerization temperature (T), rotating speed (N) and relative dosage of monomers and initiating systems ([M]0/[I]0) on number-average molecular weight (Mn) of HRPIB were studied. HRPIB with Mn of 2550 g·mol−1 and exo-olefin terminal content of 85 mol% were efficiently obtained at suitable conditions as T of 283 K, N of 1600 rpm and [M]0/[I]0 of 49. Moreover, the Mn can be regulated by changing T, N and [M]0/[I]0. Based on the presumptive-steady-state analysis method and the coalescence–redispersion model, a model for prediction of the Mn was developed and validated, and the calculated Mn values agreed well with experimental results, with a deviation of ±10%. The results demonstrate that RPB is a promising reactor for synthesizing HRPIB, and the given model for Mn can be applied for the design of RPB and process optimization.

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The Experimental Study on the Fire Suppression Effectiveness of Water Mist with the FeCl2 Additives

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.790.53 ◽

2013 ◽

Vol 790 ◽

pp. 53-56

Author(s):

Chen Jian ◽

Xu Yan Ying ◽

Wang Na

Keyword(s):

Experimental Study ◽

Fire Suppression ◽

Water Mist ◽

Experimental Results ◽

Additive Concentration ◽

Experimental Conditions ◽

Fire Source ◽

Fire Extinguishing ◽

Nozzle Position

This paper presents an experimental study of fire suppression effectiveness with water mist containing FeCl2 additives.The investigation focuses on suppression effectiveness under various FeCl2 additives concentrations,working pressures and nozzle different height above the fire source . The experimental results show that: there is a significant impact on fire suppression effectiveness when adding FeCl2 to water mist. There is an optimum additive concentration of extinguishing fire, corresponding to the shortest extinguishing time, the least amount of water, the highest efficiency of extinguishing fire. The nozzle working pressures and nozzle position have effect on the performance of the water mist extinguishing: the greater the pressure is, the shorter water mist fire extinguishing time is. Under the same experimental conditions, the closer the water mist nozzles are to the oil pan, the shorter extinguishing time is.

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