脱硫废水烟道蒸发过程数值模拟研究
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摘要
建立脱硫废水烟道蒸发数值模拟平台,对实验室装置和典型660 MW超临界机组脱硫废水的蒸发过程进行了数值模拟研究。结果表明:基于该平台计算出的结果与实验数据有较好的一致性,模型的准确度较高;烟气温度对脱硫废水蒸发影响较大,温度的升高将促进蒸发的加速;雾化角对蒸发影响较小,但雾化角变大会使积灰加重;非均匀粒径中大直径液滴对蒸发影响较大,完全蒸发时间更长。
Based on the self-developed model, numerical simulations were conducted on the evaporation process of desulfurization wastewater in the flue duct of a laboratory apparatus and a typical 660 MW supercritical unit. Results show that the data calculated based on the model agree well with experimental data, indicating high accuracy of the model. The temperature of flue gas has a great influence on the evaporation of desulfurization wastewater, and the increase of temperature will accelerate the evaporation. The atomizing angle has less influence on the evaporation, but the increase of atomizing angle will aggravate the ash accumulation. Among non-uniform particles, the droplets of large sizes have a great influence on the evaporation, which take long time to evaporate completely.
Based on the self-developed model, numerical simulations were conducted on the evaporation process of desulfurization wastewater in the flue duct of a laboratory apparatus and a typical 660 MW supercritical unit. Results show that the data calculated based on the model agree well with experimental data, indicating high accuracy of the model. The temperature of flue gas has a great influence on the evaporation of desulfurization wastewater, and the increase of temperature will accelerate the evaporation. The atomizing angle has less influence on the evaporation, but the increase of atomizing angle will aggravate the ash accumulation. Among non-uniform particles, the droplets of large sizes have a great influence on the evaporation, which take long time to evaporate completely.
引文
[1] 王鑫.燃煤电厂湿法烟气脱硫废水零排放处理技术研究[D].武汉:武汉科技大学,2015.
[2] 许静,段钰锋,冯琰磊,等.1 000 MW机组烟囱石膏雨的研究[J].发电设备,2017,31(5):344-347.
[3] 国务院.国务院关于印发水污染防治行动计划的通知[EB/OL].(2015-04-16) [2017-04-02].http://www.ndrc.gov.cn/zcfb/zcfbqt/201504/t20150416_692473.html.
[4] 胡石,丁绍峰,樊兆世.燃煤电厂脱硫废水零排放工艺研究[J].洁净煤技术,2015,21(2):129-133.
[5] 康梅强.脱硫废水烟道蒸发处理工艺系统设计与试验研究[D].重庆:重庆大学,2013.
[6] 郭静娟.火电厂脱硫废水烟道处理技术研究[J].电力科技与环保,2014,30(5):21-22.
[7] 冉景煜,张志荣.不同物性液滴在低温烟气中的蒸发特性数值研究[J].中国电机工程学报,2010,30(26):62-68.
[8] 张志荣.火电厂湿法烟气脱硫废水喷雾蒸发处理方法关键问题研究[D].重庆:重庆大学,2011.
[9] 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(12):297-302.
[10] 沈彦成.喷嘴雾化动态特性数值及试验研究[D].上海:上海交通大学,2014.
[11] 吴帅帅,李红智,陈鸿伟,等.脱硫废水烟道喷雾蒸发过程的数值模拟[J].热力发电,2015,44(12):31-36.
[2] 许静,段钰锋,冯琰磊,等.1 000 MW机组烟囱石膏雨的研究[J].发电设备,2017,31(5):344-347.
[3] 国务院.国务院关于印发水污染防治行动计划的通知[EB/OL].(2015-04-16) [2017-04-02].http://www.ndrc.gov.cn/zcfb/zcfbqt/201504/t20150416_692473.html.
[4] 胡石,丁绍峰,樊兆世.燃煤电厂脱硫废水零排放工艺研究[J].洁净煤技术,2015,21(2):129-133.
[5] 康梅强.脱硫废水烟道蒸发处理工艺系统设计与试验研究[D].重庆:重庆大学,2013.
[6] 郭静娟.火电厂脱硫废水烟道处理技术研究[J].电力科技与环保,2014,30(5):21-22.
[7] 冉景煜,张志荣.不同物性液滴在低温烟气中的蒸发特性数值研究[J].中国电机工程学报,2010,30(26):62-68.
[8] 张志荣.火电厂湿法烟气脱硫废水喷雾蒸发处理方法关键问题研究[D].重庆:重庆大学,2011.
[9] 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(12):297-302.
[10] 沈彦成.喷嘴雾化动态特性数值及试验研究[D].上海:上海交通大学,2014.
[11] 吴帅帅,李红智,陈鸿伟,等.脱硫废水烟道喷雾蒸发过程的数值模拟[J].热力发电,2015,44(12):31-36.