Experimental study on the evaporation and chlorine migration of desulfurization wastewater in flue gas

2018 ◽  
Vol 26 (5) ◽  
pp. 4791-4800 ◽  
Author(s):  
Chenghang Zheng ◽  
Hao Zheng ◽  
Zhengda Yang ◽  
Shaojun Liu ◽  
Xiang Li ◽  
...  
2013 ◽  
Vol 807-809 ◽  
pp. 1483-1488
Author(s):  
Si Wei Pan ◽  
Nian Tang ◽  
Jiang Jun Hu ◽  
Ji Fu Kuang ◽  
Min Qi ◽  
...  

For coal-fired power plant boiler flue gas desulfurization wastewater’s actual spraying proposed combination bag house dust while mercury removal process. Experimental study of the coal-fired boiler flue gas spraying chlorine ions and other halogens desulfurization wastewater modified fly ash flue gas mercury performance. Studies showed that desulfurization wastewater fly ash on chloride ion enhanced oxidation of elemental mercury, with the increase in the amount sprayed desulfurization wastewater, flue gas mercury capacity increased. Desulfurization wastewater add another halogen element can promote flue gas mercury performance, the effect of iodine was the most significant, followed by bromine. The desulfurization wastewater as a modified liquid sprayed into the flue modified fly ash, fly ash can improve mercury removal performance, eliminate the need for desulfurization wastewater treatment, cost savings, achieve desulfurization wastewater recycling.


Fuel ◽  
2020 ◽  
Vol 259 ◽  
pp. 116306 ◽  
Author(s):  
Chenghang Zheng ◽  
Cong Luo ◽  
Yong Liu ◽  
Yifan Wang ◽  
Yan Lu ◽  
...  
Keyword(s):  

2014 ◽  
Vol 70 (7) ◽  
pp. 1285-1291 ◽  
Author(s):  
Jia-jia Deng ◽  
Liang-ming Pan ◽  
De-qi Chen ◽  
Yu-quan Dong ◽  
Cheng-mu Wang ◽  
...  

Aimed at cost saving and pollution reduction, a novel desulfurization wastewater evaporation treatment system (DWETS) for handling wet flue gas desulfurization (WFGD) wastewater of a coal-fired power plant was studied. The system's advantages include simple process, and less investment and space. The feasibility of this system has been proven and the appropriate position and number of nozzles, the spray droplet size and flue gas temperature limitation have been obtained by computational fluid dynamics (CFD) simulation. The simulation results show that a longer duct, smaller diameter and higher flue gas temperature could help to increase the evaporation rate. The optimal DWETS design of Shangdu plant is 100 μm droplet sprayed by two nozzles located at the long duct when the flue gas temperature is 130 °C. Field tests were carried out based on the simulation results. The effects of running DWETS on the downstream devices have been studied. The results show that DWETS has a positive impact on ash removal efficiency and does not have any negative impact on the electrostatic precipitator (ESP), flue gas heat exchanger and WFGD. The pH values of the slurry of WFGD slightly increase when the DWETS is running. The simulation and field test of the DWETS show that it is a feasible future technology for desulfurization wastewater treatment.


Author(s):  
Gabriel E. de Araujo ◽  
Jéssica H. de Castro ◽  
Wesley F. Monteiro ◽  
Jeane de Lima ◽  
Rosane A. Ligabue ◽  
...  

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