Prediction of the Removal Efficiency of a Novel Two‐Stage Hybrid Scrubber for Flue Gas Desulfurization

Bandyopadhyaya, A.; Biswasa, M. N.

doi:10.1002/ceat.200500160

Cited by 33 publications

(20 citation statements)

References 17 publications

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“…After recovering theoretical maximal waste heat under different conditions, Figure illustrates that the corresponding desulfurization efficiency increases, with the increasing of circulating water flow rate, and decreases, with the increasing of inlet flue gas temperature. This variation tendency is exactly identical with experimental results reported by other researchers . Reasons can be attributed to that lower temperature and larger quantities of absorbent are beneficial to absorption process.…”

Section: Resultssupporting

confidence: 91%

Analysis of thermal and water equilibrium and desulfurization efficiency after waste heat recovered from a wet flue gas desulfurization system

Jiang

Yang²,

Feng³

et al. 2020

Asia-Pacific J Chem Eng

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Waste heat recovery for wet flue gas desulfurization (WFGD) system is quite necessary so that both heat and water consumption can be saved. However, formerly, there existed no clear concept about the upper limit quantity of waste heat that can be recovered for a target WFGD system, and where the final operation status of WFGD system after waste heat recovered will be located is also absent. Therefore, in the current paper, a methodology is developed first to simulate the magnesium method desulfurization system with circulating water considered using Aspen Plus V8.4. After validation, the methodology with slight modification is then used to investigate the theoretical maximal quantity of waste heat that can be recovered under different conditions and study the corresponding variation tendencies of updated thermal and water equilibrium states. Desulfurization efficiency is also discussed qualitatively. Results indicate that there exist maximal 1.41 to 2.27 MW heat that can be recovered at WFGD system for an 80 t/hr coal‐fired boiler, equivalent to save standard coal from about 1,385 to 2,230 t/a. All the streams temperature are reduced after recovering waste heat, but different streams behave different variation tendency. Water consumption and desulfurization efficiency also could get improved.

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Section: Resultssupporting

confidence: 91%

Analysis of thermal and water equilibrium and desulfurization efficiency after waste heat recovered from a wet flue gas desulfurization system

Jiang

Yang²,

Feng³

et al. 2020

Asia-Pacific J Chem Eng

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“…The liquid flow rate is found to be the most important parameter in scrubbing (5). The effect of liquid flow on the removal efficiency for various gas flow rates is shown in Fig.…”

Section: Effect Of Liquid To Gas Ratio On Removal Efficiencymentioning

confidence: 96%

“…Therefore, in the past few decades, studies which have focused on the flue gas desulphurization (FGD) process have dramatically increased. In this regard, the performance of different equipment like venturi scrubbers (2,3), spray towers (4)(5)(6), tray towers (7), packed beds (8,9), and membrane technology (10) have been studied.…”

Section: Introductionmentioning

confidence: 99%

SO₂Removal by Seawater in a Packed–Bed Tower: Experimental Study and Mathematical Modeling

Darake

Rahimi

Hatamipour

et al. 2014

Separation Science and Technology

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Flue gas desulfurization of industrial plants using seawater is studied experimentally and theoretically in a counter-current packed-bed tower. Experiments are carried out based on a 16-run orthogonal array of the Taguchi method (five factors, four levels) and ANOVA table created to determine the most significant controlling factors on SO 2 removal efficiency. Liquid flow rate (1.5-4 l/min), gas temperature (50-350 • C), gas flow rate (8-20 m 3 /h), and SO 2 concentration (500-2000 ppmv) are revealed as important factors, while the pH of seawater (8-9.5) is not significant. Experimental results show that an increase in gas temperature causes a decrease in the removal efficiency. A mathematical model is developed for the removal of SO 2 by seawater for non-isothermal operating conditions. In the modeling procedure the equilibrium reactions of eight dissolved species within the liquid phase are considered to calculate the kinetic of reaction correctly. The results of this study confirm the capability of seawater for SO 2 removal in packed-bed towers.

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“…The detailed reaction schemes for SO 2 -H 2 O and SO 2 -NaOH considered in the present article is available in the reported literature. [14,15] …”

Section: Selection Of Scrubbing Liquidmentioning

confidence: 98%

Spray scrubbing of particulate–laden SO₂ using a critical flow atomizer

Bandyopadhyay

Biswas

2008

Journal of Environmental Science and Health, Part A

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The performance of a spray tower using an energy efficient two-phase critical flow atomizer on the scrubbing of particulate-laden SO(2) using water and dilute NaOH is reported in this article. Experimentation revealed that SO(2) removal was enhanced due to presence of particles (fly-ash) and almost 100% removal efficiency was achieved in water scrubbing. The removal efficiency is elucidated in reference to atomizing air pressure, droplet diameter and droplet velocity besides other pertinent variables of the system studied. The presence of fly-ash particles improved the removal efficiency to about 20% within the range of variables studied. Empirical and semi-empirical correlations were developed for predicting the removal efficiency in water and dilute NaOH respectively. Predicted data fitted excellently well with experimental values. The performance of the spray tower is compared with the performances of existing systems and very encouraging results are obtained.

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Prediction of the Removal Efficiency of a Novel Two‐Stage Hybrid Scrubber for Flue Gas Desulfurization

Cited by 33 publications

References 17 publications

Analysis of thermal and water equilibrium and desulfurization efficiency after waste heat recovered from a wet flue gas desulfurization system

Analysis of thermal and water equilibrium and desulfurization efficiency after waste heat recovered from a wet flue gas desulfurization system

SO₂Removal by Seawater in a Packed–Bed Tower: Experimental Study and Mathematical Modeling

Spray scrubbing of particulate–laden SO₂ using a critical flow atomizer

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Prediction of the Removal Efficiency of a Novel Two‐Stage Hybrid Scrubber for Flue Gas Desulfurization

Cited by 33 publications

References 17 publications

Analysis of thermal and water equilibrium and desulfurization efficiency after waste heat recovered from a wet flue gas desulfurization system

Analysis of thermal and water equilibrium and desulfurization efficiency after waste heat recovered from a wet flue gas desulfurization system

SO2Removal by Seawater in a Packed–Bed Tower: Experimental Study and Mathematical Modeling

Spray scrubbing of particulate–laden SO2 using a critical flow atomizer

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Product

Resources

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SO₂Removal by Seawater in a Packed–Bed Tower: Experimental Study and Mathematical Modeling

Spray scrubbing of particulate–laden SO₂ using a critical flow atomizer