Flue Gas Desulfurization with an Electrostatic Spraying Absorber

Dou, Binlin; Byun, Young Cheol; Hwang, Jungho

doi:10.1021/ef700646c

Cited by 37 publications

(25 citation statements)

References 18 publications

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“…SO 2 is known to have detrimental effects on human health and environment, and as a consequence, receives more and more attention [1]. Presently, there are several ways of reducing SO 2 emissions from coal utilization, such as fuel pretreatment, concurrent burning and adsorption, and flue gas post treatment, that is, flue gas desulphurization (FGD) [2,3]. Among those schemes, FGD is the most reasonable one from both technological and economic point of views, which leads it to be the most practically applicable.…”

Section: Introductionmentioning

confidence: 99%

“…Compared with the original GWFDC, the novel wettype PCF device possesses the following virtues: (a) Dewatering performance improves significantly, and an extra demister is out of consideration. No demister means lower energy-consumption, Nomenclature a gas-liquid interface area (m 2 ) c CaCO 3 concentration of limestone in liquid phase (mol/m 3 ) c in SO 2 inlet concentration (g/m 3 ) c out SO 2 outlet concentration (g/m 3 ) c SO 2 concentration of SO 2 Control of the optimum operating parameters is one of the most effective ways to achieve a high removal efficiency of SO 2 with the minimum operation cost. Therefore, the major objective of present study was to investigate the SO 2 removal for PCF technology under different operating conditions including slurry pH and limestone content in feed stream, SO 2 inlet concentration, liquid-gas ratio and superficial gas velocity.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Flue gas desulphurization based on limestone-gypsum with a novel wet-type PCF device

Gao

Zeng

et al. 2011

Separation and Purification Technology

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Flue gas desulphurization based on limestone-gypsum with a novel wet-type PCF device

Gao

Zeng

et al. 2011

Separation and Purification Technology

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“…Dou et al [28] and Byun et al [29] demonstrated that a spray of charged water exploited a higher absorption rate (up to one order of magnitude) than with a similar uncharged spray. In spite of this valuable result, it is complex to understand the underpinning physics of the process principally due to the complexities of charged sprays fluid-dynamics.…”

Section: Water Electrified Sprays For Emission Control In Energy Prodmentioning

confidence: 99%

“…In spite of this valuable result, it is complex to understand the underpinning physics of the process principally due to the complexities of charged sprays fluid-dynamics. In fact, Dou et al [28] suggested that a main reason for SO2 absorption rate increment was the reduction of droplet size and the better gas mixing that derived from the presence of electric charge on the sprayed liquid.…”

Section: Water Electrified Sprays For Emission Control In Energy Prodmentioning

confidence: 99%

Water Electrified Sprays for Emission Control in Energy Production Processes

F.¹,

Carotenuto²,

Manna³

et al. 2016

IJHT

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Energy generation by fossil fuels produces significant amount of pollutants. Among the most toxic of them, there are SO2 and particulate matter. The first is a toxic gas that is subjected to severe regulations, the second is only partially regulated since the most toxic fractions of particles, i.e. the ultrafine particles, are nor easily measured neither properly captured by conventional technologies available at commercial level. Electrification of water sprays provide a reliable way to improve both the SO2 mass transfer rates and the particle capture efficiency, thanks to the multiple effects of electric charges imposed on the sprayed droplets. In this paper, we report experimental findings on the use of electrified sprays of water to reduce SO2 and particulate matter form a model flue gas. Tests were performed both laboratory and pilot scale. The experiments are compared with the performances of the same spray operated without electrification. In the pilot scale unit, particle removal efficiency is negligible and SO2 removal is up to 97% with the uncharged spray, The use of induction charging and exposure to corona pre-charging allow achieving >93% reduction of particulate matter and to >99% SO2 reductions. Experiments at laboratory scale shed light on the mechanisms of particle and SO2 capture. In particular, the experimental results revealed that a stochastic scavenging model presented in our former works (data not shown) well described the particle capture and that for charged droplets, the absorption rate for SO2 improved by about 60% respect to uncharged droplets.

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“…Another study by a different research group (Dou et al 2008) reported on the flue gas desulfurization by using an electrostatic spraying absorber. In this article, the performance of the system was described as a function of different operating variables and some theoretical aspects on the absorption of SO 2 were addressed.…”

Section: A Bandyopadhyaymentioning

confidence: 99%

Selecting Particulate and Gaseous Pollution Control Device

Bandyopadhyay

2012

Particulate Science and Technology

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Industrialization tends to be accompanied by growing population and increasing awareness on environmental problems, making the use of pollution control equipment imperative. However, the air pollution is a complex phenomenon, as the pollutants distributed in the air are molecularly more random than in other media (soil and water). The control of air pollution, therefore, often becomes a more energy intensive process, leading to increased CO 2 emissions. Further, air pollution comprises particulate and gaseous pollutions requiring different control philosophies. When the control of both particulate and gaseous pollutants is required in a single step, the selection of equipment is further complicated. This article outlines how such complications could be avoided by developing an understanding on the criteria of selecting air pollution control devices. The advantages and disadvantages of all generic control devices are critically appraised for the better understanding by both the designers and users. Emission trading, bubble policy, and the recommendations of the World Bank Guidelines for controlling particulates, SO 2 , and NO X pollution are highlighted. The recent research on the development of air pollution control devices are appraised critically. Finally, the criteria on selecting equipment for controlling particulate-laden-gaseous pollution in a single step are critically elucidated with few case studies.

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Flue Gas Desulfurization with an Electrostatic Spraying Absorber

Cited by 37 publications

References 18 publications

Flue gas desulphurization based on limestone-gypsum with a novel wet-type PCF device

Flue gas desulphurization based on limestone-gypsum with a novel wet-type PCF device

Water Electrified Sprays for Emission Control in Energy Production Processes

Selecting Particulate and Gaseous Pollution Control Device

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