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

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.

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

2014 ◽  
Vol 908 ◽  
pp. 183-186 ◽  
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.

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).

Degradation of Organophosphorus Pesticide in a Packed-Bed Plasma Reactor: Effects of Operating Parameters and Kinetics Study

2013 ◽  
Vol 781-784 ◽  
pp. 1637-1645 ◽  
Author(s):  
Ting Jun Ma ◽  
Yi Qing Xu
Keyword(s):  
Removal Efficiency ◽  
Flow Rate ◽  
Gas Flow ◽  
Plasma Reactor ◽  
Organophosphorus Pesticide ◽  
Packed Bed ◽  
Pulse Frequency ◽  
Gas Flow Rate ◽  
Peak Voltage ◽  
Initial Concentration

The degradation effectiveness and reaction kinetics of representative organophosphorus (OP) pesticide in a packed-bed plasma reactor have been studied. Important parameters, including peak voltage, pulse frequency, gas-flow rate, initial concentration, diameter of catalyst particles, and thickness of catalyst bed which influences the removal efficiency, were investigated. Experimental results indicated that rogor removal efficiency as high as 80% can be achieved at 35 kV with the gas flow rate of 800 mL/min and initial concentration of 11.2 mg/m3.The removal efficiency increased with the increase of pulsed high voltage, and pulse frequency, the decrease of the diameter of catalyst particles and the thickness of catalyst bed. Finally, a model was established to predict the degradation of the rogor, which generally can simulate the experimental measurements to some degree.

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

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.

Evaluation of NOX Removal from Simulated Flue Gas by "Absorption-Oxidation-Reduction" Method

2014 ◽  
Vol 884-885 ◽  
pp. 261-265
Author(s):  
Bao Lin Li ◽  
Ming Yu Li ◽  
Hai Hao Liu ◽  
Gang Cao ◽  
Gang Ren ◽  
...  
Keyword(s):  
Removal Efficiency ◽  
Flow Rate ◽  
Flue Gas ◽  
Ferrous Sulfate ◽  
Gas Flow ◽  
Reduction Method ◽  
Ph Value ◽  
Sulfate Solution ◽  
Gas Flow Rate ◽  
Oxidation Reduction

This paper presented a new method of absorption-oxidation-reduction which used ferrous sulfate solution as absorbent, oxygen as oxidizer and urea as reducer to remove NOX from flue gas based on the properties of Fe2+, NO, [Fe (NO)]2+ and urea. These properties included that Fe2+ and NO could produce [Fe (NO)]2+, furthermore [Fe (NO)]2+ was easy to be oxidized by O2, as well as urea can reduce HNO2 and HNO3 in the absorption liquid. This research was to discuss its absorption and removal mechanism with the influence of the initial urea concentration, pH value, initial NOX concentration and gas flow rate on the NOX removal efficiency. The results showed that the removal efficiency of NOX would increase when the initial concentration of urea and NOX increased, while the pH value and gas flow rate decreased.

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%.

Experiment on Simultaneous Absorption of NO and SO2 from Sintering Flue Gas by Oxidizing Agents of KMnO4/NaClO

2014 ◽  
Vol 12 (1) ◽  
pp. 539-547 ◽  
Author(s):  
Ying Li ◽  
Wenqi Zhong ◽  
Jing Ju ◽  
Tiancai Wang ◽  
Fei Liu
Keyword(s):  
Removal Efficiency ◽  
Flue Gas ◽  
Initial Solution ◽  
Molar Ratio ◽  
Gas Temperature ◽  
Inlet Concentration ◽  
Solution Ph ◽  
Experimental Conditions ◽  
Simultaneous Absorption ◽  
Spray Absorption

Abstract A complex oxidizing agent combination made up of KMnO4 and NaClO was used to investigate the simultaneous absorption of NO and SO2 from sintering flue gas in a spray absorption tower on a laboratory scale. The effects of various operating parameters, i.e. initial gas temperature (Tg), initial solution pH, molar ratio of NaClO/KMnO4 (M), initial NO inlet concentration (CN) and SO2 initial inlet concentration (CS), were systematically investigated in the experiments. The results showed that the removal efficiency of SO2 was slightly affected by the reaction conditions and remained stable above 98%; however, the removal efficiency of NO was significantly influenced. It presented different trends with the reaction condition changed. The most optimal experimental conditions for simultaneous removal of NO and SO2 were found to be initial solution pH=5.5, Tg=50°C, M=3; in this case the average removal efficiencies of NO and SO2 could reach 98.8 and 70.9%, respectively.

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

2013 ◽  
Vol 726-731 ◽  
pp. 2182-2185
Author(s):  
Li Juan He ◽  
Jie Qiong Li ◽  
Yan Ling Ni ◽  
Jun Hua Yi ◽  
Wen Fei Wu
Keyword(s):  
Mass Transfer ◽  
Experimental Study ◽  
Flue Gas ◽  
Packed Bed ◽  
Absorption Efficiency ◽  
Experimental Results ◽  
Liquid Equilibrium ◽  
Experimental Conditions ◽  
Rotating Packed Bed ◽  
The Given

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%.

scholarly journals Estimating precision and accuracy of GC-TCD method for carbon dioxide, propane and carbon monoxide determination at different flow rate of carrier gas

2016 ◽  
Vol 70 (4) ◽  
pp. 451-459 ◽  
Author(s):  
Oman Zuas ◽  
Harry Budiman
Keyword(s):  
Thermal Conductivity ◽  
Flow Rate ◽  
Gas Flow ◽  
Thermal Conductivity Detector ◽  
Experimental Conditions ◽  
Flow Rates ◽  
Carrier Gas ◽  
Relative Standard ◽  
Precision And Accuracy ◽  
Carrier Gas Flow

Investigation on precision and accuracy of gas chromatography equipped with thermal conductivity detector (GC-TCD) method for the measurement of CO2, C3H8, and CO as pollutant models at different flow rate of helium (He) carrier gas ranging from 17.50 to 36.25 ml/min were conducted. It was found that percentage of relative standard deviation (%RSD) values for both precision an accuracy show an overall gradual decrease as the carrier gas flow rates increased up to 25 ml/min. After that, the %RSD was found to increase with a further increase in the flow rate. These findings indicate that the flow rate of 25 ml/min was found to be the most precise and accurate level among all flow rates tested under experimental conditions of this study. While the %RSD values obtained at all flow rate are given in details. Consequently, our results suggest that the flow rate of carrier gas was a determining parameter for varying the precision and accuracy of the GC-TCD method. Owing to the fact that carrier gas act as a transporter of components of the mixture in the form of vapor or gas through the column, setting of the flow rate of carrier gas should in proper level achieve a precision and accuracy of the GC-TCD method.

High Flue Gas Flow Rate Tests for Removal and Recovery of Carbon Dioxide under Power Plant Effluent Gas Conditions

2004 ◽  
Vol 30 (6) ◽  
pp. 758-761
Author(s):  
Tomio MIMURA ◽  
Yasuyuki YAGI ◽  
Masaki IIJIMA ◽  
Ryuji YOSIYAMA ◽  
Takahito YONEKAWA
Keyword(s):  
Carbon Dioxide ◽  
Power Plant ◽  
Flow Rate ◽  
Flue Gas ◽  
Gas Flow ◽  
Gas Flow Rate ◽  
Power Plant Effluent ◽  
Removal And Recovery
Sign in / Sign up

Export Citation Format

Share Document