Experimental study on desulfurization efficiency and gas–liquid mass transfer in a new liquid-screen desulfurization system

Sun, Zhen; Wang, Shengwei; Zhou, Qulan; Suo, Hui

doi:10.1016/j.apenergy.2009.09.007

Cited by 29 publications

(12 citation statements)

References 24 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 desulfurization process was essentially the mass transfer process of SO 2 and the process of material diffusion. The mechanism can be explained by the two-film theory (Sai et al, 2010;Sun et al, 2010;.…”

Section: Experimental Principle and Methodologymentioning

confidence: 99%

Application of Gas Cyclone-Liquid Jet Absorption Separator for Flue-Gas Desulfurization

Wang

Yang

et al. 2017

Aerosol Air Qual. Res.

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A gas cyclone-liquid jet absorption separator integrates the functions of cyclone separation, liquid jet atomization, and absorption separation. This study employed this device to conduct a wet flue-gas desulfurization experiment on a gas mixture consisting of air in room temperature and sulfur dioxide (SO 2 ) to explore this device's prospect of tail gas purification. Sodium hydroxide (NaOH) and sodium carbonate (Na 2 CO 3 ) solutions at various concentrations were used as absorbents under room temperature. The changes in the SO 2 removal efficiency and air pressure drop were investigated with parameters including total gas flow, SO 2 concentration in the flue gas, and absorbent flow. The SO 2 removal efficiency increased to a certain extent as the absorbent concentration, total gas flow, and absorbent flow increased. The maximum SO 2 removal efficiencies of NaOH and Na 2 CO 3 were 85% and 77%, respectively. Under identical experimental conditions, the changes in SO 2 removal efficiencies of NaOH and Na 2 CO 3 exhibited essentially identical trends, in which NaOH exhibited a 5%-8% greater SO 2 removal efficiency than Na 2 CO 3 .

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“…A large amount of the carbide slag productions in China bring lots of problems like land occupation and environmental pollution [25,26]. Since the main component of carbide slag is calcium hydroxide (Ca(OH) 2 ), carbide slag has been considered as a substitute adsorbent to remove SO 2 in WFGD system [27]. But the composition of carbide slag was slightly different from the traditional calcium-based absorbents [25], e.g.…”

Section: Introductionmentioning

confidence: 99%

Study of mercury re-emission in a simulated WFGD solution containing thiocyanate and sulfide ions

Wang

Liu

Zhen-mei

et al. 2014

Fuel

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Experimental study on desulfurization efficiency and gas–liquid mass transfer in a new liquid-screen desulfurization system

Cited by 29 publications

References 24 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

Application of Gas Cyclone-Liquid Jet Absorption Separator for Flue-Gas Desulfurization

Study of mercury re-emission in a simulated WFGD solution containing thiocyanate and sulfide ions

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