单筛板湿法脱硫系统提效技术应用研究
|
摘要
分析单筛板湿法脱硫系统提效技术,并在某燃煤机组上进行应用研究,通过试验发现:试验条件下,适当降低筛板开孔率有利于脱硫效率的提高,当筛板开孔率从30%降至29%后,脱硫效率增加了1.1%;增加液气比可以提高脱硫效率;机组负荷的增加会导致脱硫效率降低;原烟气SO_2浓度的增加会导致脱硫效率降低;在5.28～5.6的p H值区间内,随着吸收塔内pH值的升高,脱硫效率增加,最佳pH值为5.6左右。
In this paper, the efficiency improvement technology of single sieve plate WFGD system is analyzed and applied to a coal-fired unit. It is found that under the experimental condition, reducing the opening ratio of the sieve plate is conducive to improve the desulfurization efficiency; when the opening ratio of the sieve plate is reduced to 29%, the desulfurization efficiency is increased by 1.1%; the liquid-gas ratio increase can improve the desulfurization efficiency; the increase of unit load will lead to a decrease of desulfurization efficiency of the desulfurization system; the increase of SO_2 concentration in the original flue gas will lead to a decrease of desulfurization efficiency; in the pH range of 5.28～5.6, with the increase of the pH value in the absorber, the desulfurization efficiency increases, and the optimal p H value is about 5.6.
In this paper, the efficiency improvement technology of single sieve plate WFGD system is analyzed and applied to a coal-fired unit. It is found that under the experimental condition, reducing the opening ratio of the sieve plate is conducive to improve the desulfurization efficiency; when the opening ratio of the sieve plate is reduced to 29%, the desulfurization efficiency is increased by 1.1%; the liquid-gas ratio increase can improve the desulfurization efficiency; the increase of unit load will lead to a decrease of desulfurization efficiency of the desulfurization system; the increase of SO_2 concentration in the original flue gas will lead to a decrease of desulfurization efficiency; in the pH range of 5.28～5.6, with the increase of the pH value in the absorber, the desulfurization efficiency increases, and the optimal p H value is about 5.6.
引文
[1]朱世勇.环境与工业气体净化技术[M].北京:化学工业出版社,2001.
[2]MICHALSKI J A.Inorganic,wet flue gas desulfurization(FGD)technologies-a review[J].Trends in Chemical Engineering,2006(10):31-40.
[3]蒋惠梦,余苏玲,肖述明,等.湿法烟气脱硫喷淋塔的持液特性[J].环境工程学报,2017,11(3):1746-1754.
[4]李存杰.湿法烟气SO2高效脱除及SO3协同控制的实验研究[D].杭州:浙江大学,2017.
[5]李元,杨志忠.湿法烟气脱硫关键影响因素及新型单塔双循环技术[J].环境工程,2016,34(1):69-73.
[6]陈柳,李岁月.对FGD系统的研究及脱硫效率影响因素分析[J].现代盐化工,2018,45(2):41-42.
[7]蒋惠梦,谷小兵,余苏玲,等.湿法烟气脱硫喷淋塔的阻力特性研究[J].环境保护科学,2017,53(3):85-90.
[8]何苏浩,项光明,姚强,等.石灰石/石灰-石膏湿法脱硫反应塔模型比较[J].煤炭转化,2001,24(3):41-44.
[9]陈莲芳,徐夕仁.烟气脱硫系统液气化控制指标探讨[J].环境工程,2005,23(6):45-47.
[10]杜谦,马春元,董勇,等.液气比对石灰石-石膏湿法烟气脱硫过程的影响[J].动力工程,2007,27(3):422-426.
[11]凌有基,黄金星.石灰石-石膏湿法脱硫中液气比、pH值、气液接触时间对脱硫效率的影响[J].当代化工研究,2017(5):18-19.
[12]柯昌华,陈捷.WFGD中喷淋塔液气比计算方法的探讨[J].能源工程,2017(1):65-68.
[13]卢继昌,侯宇驰,张丽.筛板塔在湿法烟气脱硫中的应用[J].当代化工,2008,37(3):243-245.
[14]黄晓媛,莫建松,吴忠标.石灰石-石膏湿法烟气脱硫系统的数值模拟[J].化学反应工程与工艺,2017,33(1):55-64.
[15]杨泽坤.火电厂湿法烟气脱硫控制系统的研究与应用[D].石家庄:河北科技大学,2016.
[2]MICHALSKI J A.Inorganic,wet flue gas desulfurization(FGD)technologies-a review[J].Trends in Chemical Engineering,2006(10):31-40.
[3]蒋惠梦,余苏玲,肖述明,等.湿法烟气脱硫喷淋塔的持液特性[J].环境工程学报,2017,11(3):1746-1754.
[4]李存杰.湿法烟气SO2高效脱除及SO3协同控制的实验研究[D].杭州:浙江大学,2017.
[5]李元,杨志忠.湿法烟气脱硫关键影响因素及新型单塔双循环技术[J].环境工程,2016,34(1):69-73.
[6]陈柳,李岁月.对FGD系统的研究及脱硫效率影响因素分析[J].现代盐化工,2018,45(2):41-42.
[7]蒋惠梦,谷小兵,余苏玲,等.湿法烟气脱硫喷淋塔的阻力特性研究[J].环境保护科学,2017,53(3):85-90.
[8]何苏浩,项光明,姚强,等.石灰石/石灰-石膏湿法脱硫反应塔模型比较[J].煤炭转化,2001,24(3):41-44.
[9]陈莲芳,徐夕仁.烟气脱硫系统液气化控制指标探讨[J].环境工程,2005,23(6):45-47.
[10]杜谦,马春元,董勇,等.液气比对石灰石-石膏湿法烟气脱硫过程的影响[J].动力工程,2007,27(3):422-426.
[11]凌有基,黄金星.石灰石-石膏湿法脱硫中液气比、pH值、气液接触时间对脱硫效率的影响[J].当代化工研究,2017(5):18-19.
[12]柯昌华,陈捷.WFGD中喷淋塔液气比计算方法的探讨[J].能源工程,2017(1):65-68.
[13]卢继昌,侯宇驰,张丽.筛板塔在湿法烟气脱硫中的应用[J].当代化工,2008,37(3):243-245.
[14]黄晓媛,莫建松,吴忠标.石灰石-石膏湿法烟气脱硫系统的数值模拟[J].化学反应工程与工艺,2017,33(1):55-64.
[15]杨泽坤.火电厂湿法烟气脱硫控制系统的研究与应用[D].石家庄:河北科技大学,2016.