Numerical Simulation of Multi-Nozzle Droplet Evaporation Characteristics for Desulfurization Wastewater

doi:10.3390/en15145180

	Numerical Simulation of Multi-Nozzle Droplet Evaporation Characteristics for Desulfurization Wastewater
	Guo, Xinrui 2; Wu, Jiangbo 2; Du, Xiaoze 2; Zhang, Yaocong 2; Feng, Shuqin 1; Liu, Shujun 2
刊名	ENERGIES
	2022-07-01
卷号	15 期号:14
关键词	flue gas desulfurization wastewater zero discharge of wastewater atomized droplet spray evaporation least-square support vector machine
DOI	10.3390/en15145180
英文摘要	Spraying flue gas desulfurization wastewater into flue ducts is an emerging technology that is receiving extensive attention in thermal power plants. In order to study the evaporative performance of wastewater-atomizing droplets under variable working conditions, a combined Euler-Lagrange model was developed to demonstrate the thermal behavior of FGD wastewater spray evaporation in flue gas. The effects of several control factors under various operating conditions were numerically determined and validated against experimental data. Due to the complicated parameters and various other conditions, a least-square support vector machine (LSSVM) model relying on numerical results was used to anticipate the evaporation rate of the droplets. We prove that the LSSVM model has high prediction accuracy for the evaporation rate at different cross-sections of flue under a different operating situation. The conclusion is that for the sake of improving the quality of evaporation, the spacing between two adjacent nozzles should be increased while increasing the flow rate. However, using a higher flue gas temperature, higher initial temperature and smaller diameter of droplets can shorten the time and distance of complete evaporation. In summary, this research analysis can be used effectively to determine the design of the FGD wastewater flue gas evaporative process in thermal power plants.
WOS研究方向	Energy & Fuels
语种	英语
出版者	MDPI
WOS记录号	WOS:000832425600001
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/159451]
专题	能源与动力工程学院
作者单位	1.North China Elect Power Univ, Key Lab Condit Monitoring & Control Power Plant E, Minist Educ, Beijing 102206, Peoples R China 2.Lanzhou Univ Technol, Sch Energy & Power Engn, Lanzhou 730050, Peoples R China;
推荐引用方式 GB/T 7714	Guo, Xinrui,Wu, Jiangbo,Du, Xiaoze,et al. Numerical Simulation of Multi-Nozzle Droplet Evaporation Characteristics for Desulfurization Wastewater[J]. ENERGIES,2022,15(14).
APA	Guo, Xinrui,Wu, Jiangbo,Du, Xiaoze,Zhang, Yaocong,Feng, Shuqin,&Liu, Shujun.(2022).Numerical Simulation of Multi-Nozzle Droplet Evaporation Characteristics for Desulfurization Wastewater.ENERGIES,15(14).
MLA	Guo, Xinrui,et al."Numerical Simulation of Multi-Nozzle Droplet Evaporation Characteristics for Desulfurization Wastewater".ENERGIES 15.14(2022).