Study on the Adaptability of Rotary Atomization Evaporation Technology to Desulfurization Wastewater and Flue Gas

doi:10.11930/j.issn.1004-9649.202011080

Abstract

Abstract: In this study, the experiments on rotary atomization evaporation of desulfurization wastewater were conducted. The adaptability of this technology to wastewater quality and flue gas parameters were studied, and the methods to optimize the performance of evaporation were analyzed. The results show that the rotary atomization evaporation technology for desulfurization wastewater are highly adaptable to the total dissolved solids (TDS) and suspended substance (SS) of wastewater, as well as the temperature and dust concentration of flue gas. Under appropriate experimental conditions, it shows great evaporation effect in which the moisture contents of dusts from both the outlet and bottom of the evaporation tower can be reduced to below 2%, no matter whether TDS reaches as much as 200000 mg/L, SS reaches 6%, temperature≥300 ℃, or dust concentration reaches as much as 30 g/m³. In addition, increasing the gas liquid ratio or the sprayer rotate speed can effectively lower down the moisture contents, which makes it feasible to be applied for the optimization of wastewater evaporation.

Key words: desulfurization wastewater, rotary atomization, adaptability, zero discharge, wastewater quality, flue gas parameter

LI Fei. Study on the Adaptability of Rotary Atomization Evaporation Technology to Desulfurization Wastewater and Flue Gas[J]. Electric Power, 2021, 54(4): 213-220.

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URL: https://www.electricpower.com.cn/EN/10.11930/j.issn.1004-9649.202011080

https://www.electricpower.com.cn/EN/Y2021/V54/I4/213

References

[1] 王敏琪. 火电厂湿式烟气脱硫废水特性及处理系统研究[D]. 杭州: 浙江工业大学, 2013.
WANG Minqi. The features and treatment-system renovation of the wet flue gas desulphurization wastewater in thermal power plant[D]. Hangzhou: Zhejiang University of Technology, 2013.
[2] 康梅强, 邓佳佳, 陈德奇, 等. 脱硫废水烟道蒸发零排放处理的可行性分析[J]. 土木建筑与环境工程, 2013(增刊1): 238-240
KANG Meiqiang, DENG Jiajia, CHEN Deqi, et al. Analysis on the feasibility of desulfurization wastewater evaporation treatment in flue gas duct without pollution discharge[J]. Journal of Civil, Architectural & Environment Engineering, 2013(S1): 238-240
[3] 刘海洋, 江澄宇, 谷小兵, 等. 燃煤电厂湿法脱硫废水零排放处理技术进展[J]. 环境工程, 2016, 34(4): 33-36, 41
LIU Haiyang, JIANG Chengyu, GU Xiaobing, et al. Development of zero liquid discharge technologies for desulfurization wastewater from coal-fired power plant[J]. Environmental Engineering, 2016, 34(4): 33-36, 41
[4] 邓佳佳. 燃煤电厂烟气脱硫吸收塔内过程优化及脱硫废水的零排放处理[D]. 重庆: 重庆大学, 2015.
DENG Jiajia. Study on optimization of coal combustion power plant WFGD spray scrubber process and zero discharge of WFGD wastewater[D]. Chongqing: Chongqing University, 2015.
[5] 李飞. 燃煤电厂脱硫废水零排放技术应用与研究进展[J]. 水处理技术，2020，46(12)：17–24.
LI Fei. Application and research progresses of technologies for zero-discharge of desulfurization wastewater from coal-fired power plants[J]. Technology of Water Treatment, 2020, 46(12): 17–24.
[6] 白璐, 陈武, 王凯亮, 等. 燃煤电厂脱硫废水零排放处理技术研究进展[J]. 工业水处理, 2019, 39(4): 16-20
BAI Lu, CHEN Wu, WANG Kailiang, et al. Research progress in the zero-discharge treatment technology for desulfurization wastewater from coal-fired power plants[J]. Industrial Water Treatment, 2019, 39(4): 16-20
[7] 白璐. 脱硫废水喷雾蒸发过程中无机盐析出及氯元素的迁移转化研究[D]. 南京: 东南大学, 2019.
BAI Lu. Study on precipitation of inorganic salt and migration and transformation of chlorine in spray drying of desulfurization wastewater[D]. Nanjing: Southeast University, 2019.
[8] 王晓焙, 杨林军. 基于Fluent对脱硫废水喷雾干燥技术的研究[J]. 工业控制计算机, 2019, 32(4): 94-95, 97
WANG Xiaobei, YANG Linjun. Spray drying technology of desulfurization wastewater based on Fluent[J]. Industrial Control Computer, 2019, 32(4): 94-95, 97
[9] 陈武. 基于旁路烟气的脱硫废水喷雾干燥零排放处理实验研究[D]. 南京: 东南大学, 2019.
CHEN Wu. Experimental study on zero emission treatment of spray drying of desulfurization wastewater based on bypass flue gas[D]. Nanjing: Southeast University, 2019.
[10] 陈武, 王凯亮, 罗天翔, 等. 脱硫废水旋转雾化及其干燥蒸发特性试验研究[J]. 中国电机工程学报, 2019, 39(11): 3295-3302
CHEN Wu, WANG Kailiang, LUO Tianxiang, et al. Study on rotating spray atomization and drying evaporation characteristics of desulfurization wastewater[J]. Proceedings of the CSEE, 2019, 39(11): 3295-3302
[11] 白璐, 王凯亮, 罗天翔, 等. 脱硫废水在热烟气环境中的蒸发特性及其产物特性研究[J]. 热能动力工程, 2020, 35(5): 188-195
BAI Lu, WANG Kailiang, LUO Tianxiang, et al. Evaporation performance and product characteristics of desulfurization wastewater in hot flue gas environment[J]. Journal of Engineering for Thermal Energy and Power, 2020, 35(5): 188-195
[12] 王可辉, 蒋芬, 徐志清, 等. 火电厂脱硫废水高温雾化蒸发实验研究[J]. 环境工程, 2015, 33(增刊1): 60-62, 79
WANG Kehui, JIANG Fen, XU Zhiqing, et al. Experimental research on high temperature atomizing evaporation for desulfurization wastewater treatment in thermal power plant[J]. Environmental Engineering, 2015, 33(S1): 60-62, 79
[13] 袁伟中, 刘春红, 童小忠, 等. 燃煤锅炉采用烟气旁路干燥技术实现脱硫废水零排放[J]. 电力科技与环保, 2017, 33(3): 18-21
YUAN Weizhong, LIU Chunhong, TONG Xiaozhong, et al. Coal-fired boiler flue gas bypass drying technology to achieve zero liquid discharge of desulfurization water[J]. Electric Power Technology and Environmental Protection, 2017, 33(3): 18-21
[14] 杜艳玲, 柴启华, 员在斌. 旋转喷雾干燥法在火电厂脱硫废水零排放改造中的应用[J]. 内蒙古电力技术, 2018, 36(2): 50-53
DU Yanling, CHAI Qihua, YUAN Zaibin. Application of rotary spray drying method in zero emission reformation for desulfurization wastewater in power plant[J]. Inner Mongolia Electric Power, 2018, 36(2): 50-53
[15] 杨跃伞, 苑志华, 张净瑞, 等. 燃煤电厂脱硫废水零排放技术研究进展[J]. 水处理技术, 2017, 43(6): 29-33
YANG Yuesan, YUAN Zhihua, ZHANG Jingrui, et al. Research progress of technologies for zero-discharge of desulfurization wastewater from coal-fired power plants[J]. Technology of Water Treatment, 2017, 43(6): 29-33
[16] KORNGOLD E, ARONOV L, DALTROPHE N C. Electrodialysis of brine solutions discharged from an RO plant[J]. Desalination, 2009, 242(1/2/3): 215-227.
[17] 马双忱, 于伟静, 贾绍广, 等. 燃煤电厂脱硫废水处理技术研究与应用进展[J]. 化工进展, 2016, 35(1): 255-262
MA Shuangchen, YU Weijing, JIA Shaoguang, et al. Research and application progresses of flue gas desulfurization (FGD) wastewater treatment technologies in coal-fired plants[J]. Chemical Industry and Engineering Progress, 2016, 35(1): 255-262
[18] 王喜忠, 于才渊, 周才君. 喷雾干燥[M]. 2版. 北京: 化学工业出版社, 2003.
[19] MA S C, CHAI J, WU K, et al. Experimental and mechanism research on volatilization characteristics of HCl in desulfurization wastewater evaporation process using high temperature flue gas[J]. Journal of Industrial and Engineering Chemistry, 2018, 66(10): 311-317.
[20] 马双忱, 柴峰, 吴文龙, 等. 脱硫废水烟道蒸发工艺影响因素实验研究[J]. 环境科学与技术, 2015, 38(增刊2): 297-301, 306
MA Shuangchen, CHAI Feng, WU Wenlong, et al. Experimental research on influencing factors of flue evaporation treatment for desulfurization wastewater[J]. Environmental Science & Technology, 2015, 38(S2): 297-301, 306
[21] 马双忱, 柴峰, 吴文龙, 等. 脱硫废水烟道喷雾蒸发的数值模拟[J]. 计算机与应用化学, 2016, 33(1): 47-53
MA Shuangchen, CHAI Feng, WU Wenlong, et al. The numerical simulation of flue gas desulphurization wastewater spray evaporation[J]. Computers and Applied Chemistry, 2016, 33(1): 47-53
[22] 王晓焙. 基于脱硫废水旁路烟道喷雾干燥技术数值模拟研究[D]. 南京: 东南大学, 2019.
WANG Xiaobei. Numerical simulation of spray drying technology for desulfurization wastewater bypass flue[D]. Nanjing: Southeast University, 2019.
[23] 李飞, 陈海杰, 刘峰均, 等. 脱硫废水旋转喷雾蒸发特性实验研究[J]. 中国电力, 2021, 54(1): 188-195
LI Fei, CHEN Haijie, LIU Fengjun, et al. Experimental study on the characteristics of rotating spray evaporation of desulfurization wastewater[J]. Electric Power, 2021, 54(1): 188-195