摘要
海水中的脱硫有效离子质量浓度直接影响脱硫系统的效率,越南某滨海燃煤电站项目海水脱硫有效离子质量浓度受淡水下泄影响而发生变化,为满足电站脱硫要求,需要计算淡水下泄对脱硫有效离子质量浓度的影响。建立了该项目的二维水流数学模型,在对模型进行验证的基础上,计算出不同时期电站取水口处的HCO_3^-质量浓度,分析淡水下泄对海水脱硫主要有效离子——HCO_3^-质量浓度的影响。研究表明:径流流量最大期,淡水下泄对取水口处HCO_3^-质量浓度影响最为显著;径流流量最小期,淡水下泄对取水口处HCO_3^-质量浓度影响较弱。研究结果可为电站海水脱硫系统的设计提供依据。
The desulfurization effective ion mass concentration in seawater directly affects the efficiency of the desulfurization system. The desulfurization effective ion mass concentration of seawater in a coastal coal-fired power station in Vietnam is affected by fresh water drainage. In order to meet the desulfurization requirements of the power station,it is necessary to calculate the desulfurization effective ions changing with fresh water drainage. A 2D water flow mathematical model of the project is established. Based on the verification of the model,the HCO3- mass concentration at the water intake of the power station at different periods is calculated and the mass concentration of main desulfurization effective ion of seawater,HCO3-,is analyzed. The research shows that during the maximum runoff period,the fresh water drainage has the most significant effect on the HCO3- mass concentration at the water intake;during the minimum runoff period,the fresh water drainage has a weak influence on the HCO3- mass concentration at the water intake. The research results can provide a basis for designing seawater desulphurization systems of power stations.
作者
李金锋
周正一
罗子湛
徐立伟
LI Jinfeng;ZHOU Zhengyi;LUO Zizhan;XU Liwei(China Huadian Engineering Company Limited, Beijing 100070, China)
出处
《华电技术》
CAS
2019年第5期1-7,共7页
HUADIAN TECHNOLOGY
基金
中国华电集团科技项目(CHDKJ17-01-19)
关键词
淡水下泄
海水脱硫系统
有效离子
数学模型
离子质量浓度
fresh water drainage
seawater desulphurization system
effective ion
mathematical model
ion mass concentration
