Modeling of ammonia-based wet flue gas desulfurization in the spray scrubber

Jia, Yongzhong; Zhong, Qin; Fan, Xuyou; Chen, Qianqiao; Sun, Haibo

doi:10.1007/s11814-010-0472-4

Cited by 22 publications

(13 citation statements)

References 14 publications

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“…Gao et al [4] performed experiments in a stirred tank reactor to investigate the characteristics of the reaction between ammonium sulfite, the main desulfurizing solution and the flue-gas-contained sulfur dioxide during the process of ammonia-based WFGD in a power plant, and the experimental results indicated that the reaction was controlled concurrently by gas-and liquid-film. Jia et al [9,10] developed a mathematical model according to the double film theory to study the desulfurization process of ammonia-based WFGD in the spray scrubber, and the calculated results for two 220 t h À1 boilers unit in China by this model agreed well with the measured data. This model could provide predictions of the absorption performance and appeared to be helpful for designing scrubbers for SO 2 absorption with ammonia absorbent.…”

Section: Introductionmentioning

confidence: 73%

Numerical simulation research of flow field in ammonia-based wet flue gas desulfurization tower

Wang

Zhu

Zhang

et al. 2015

Journal of the Energy Institute

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Section: Introductionmentioning

confidence: 73%

Numerical simulation research of flow field in ammonia-based wet flue gas desulfurization tower

Wang

Zhu

Zhang

et al. 2015

Journal of the Energy Institute

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“…The mass transfer and chemical reaction process of wet ammonia desulfurization process are complex and there are few studies on the prediction of wet ammonia desulfurization efficiency. Jia et al have developed a mathematical model to simulate the absorption of SO 2 in a spray scrubber [13]. Liu et al established a mathematical model of ammonia desulfurization in spray tower by analyzing the mass transfer rate equation of SO 2 in the process of ammonia desulfurization, and the experimental data agreed with the calculated values well [14].…”

Section: Introductionmentioning

confidence: 99%

Prediction of SO2 removal efficiency for ammonia-based wet flue gas desulfurization in a packed tower

2020

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Wet flue gas desulfurization is widely used in power plants because of its high desulfurization efficiency. The reason why it is difficult to predict sulfur dioxide removal efficiency in flue gas is that it is related to many factors. In this paper, the SO 2 was removed by absorbing with ammonia solution in a packed tower. Experimental studies have shown that the operating conditions affecting the removal of sulfur dioxide include pH, liquid-to-gas, the concentration of SO 2 and inlet velocity. Based on the two-film theory, the mass transfer rate equation of SO 2 in the ammonia desulphurization process was studied, and the prediction of SO 2 removal efficiency based on certain assumptions was developed. In order to prove the responsibility of the model, significant factors such as pH, liquid-to-gas, the concentration of SO 2 , and inlet velocity were studied in a packed tower. The experimental results show that it is possible to improve desulphurization efficiency by increasing the liquid-to-gas ratio and pH value, lowering the concentration of SO 2 and inlet velocity. Experimental results show that the experimental value is consistent with the predicted value. Keywords Ammonia absorption • Packed power • Desulfurization • Mass transfer rate equation List of symbols A The cross-sectional area of packed column, m 2 a Effective interfacial area, m 2 /m 3 a t Packed column specific surface area, m 2 /m 3 b Stoichiometric number of ammonium sulfite reactions c Ai Concentration of sulfur dioxide in liquid film, kmol/m 3 c BL Concentration of ammonium sulfite in the bulk of the liquid phase, kmol/m 3 D r Relative density c i Ion concentration, kmol/m 3 Dso 2 , D (NH4)2SO3 Diffusion coefficients of sulfur dioxide and ammonium sulfite in liquid film, m 2 /s E Enhancement factor G Volume flow of flue gas, m 3 /s

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“…Numerous studies on SO 2 removal and abatement processes have been carried out to seek cost‐effective solutions for this issue , , , . Among the various methods employed in the abatement of SO 2 gas, dry flue gas desulfurization (FGD) technologies are thought to effectively solve those issues.…”

Section: Introductionmentioning

confidence: 99%

Comparative Study of the Flue Gas Desulfurization Using Different‐Grade Natural Manganese Oxides

Chen

et al. 2020

Chem Eng & Technol

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Different grades of natural manganese ores were used to remove SO 2 by dry flue gas desulfurization. The grades of the manganese ores were negatively correlated with the desulfurization performance. The produced MnSO 4 enriched on the surface would block the gas diffusion channels during desulfurization. The better desulfurization properties of the low-grade manganese ores are ascribed to the highly active g-MnO 2 , the porous structure, and the high specific surface area as well as the SiO 2 bridge-like effects. This study supports the cooperative use of sulfur-containing flue gases and low-grade natural manganese oxides.

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Modeling of ammonia-based wet flue gas desulfurization in the spray scrubber

Cited by 22 publications

References 14 publications

Numerical simulation research of flow field in ammonia-based wet flue gas desulfurization tower

Numerical simulation research of flow field in ammonia-based wet flue gas desulfurization tower

Prediction of SO2 removal efficiency for ammonia-based wet flue gas desulfurization in a packed tower

Comparative Study of the Flue Gas Desulfurization Using Different‐Grade Natural Manganese Oxides

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