常规水喷淋应急处置氨泄漏过程中NH_3二次大气污染研究  

Secondary Air Pollution of NH_3 During the Conventional Sprinkler Emergency Treatment of Ammonia Leakage

作　　者：杜晓燕[1,2] 程五一[2] 朱庆明[1] 井淼[2] DU Xiaoyan;CHENG Wuyi;ZHU Qingming;JING Miao(School of Architectural Engineering,Anhui University of Technology,Maanshan 243032,China;School of Engineering and Technology,China University of Geosciences（Beijing）,Beijing 100083,China)

机构地区：[1]安徽工业大学建筑工程学院,安徽马鞍山243032 [2]中国地质大学(北京)工程技术学院,北京100083

出　　处：《安全与环境工程》2018年第4期160-164,共5页Safety and Environmental Engineering

基　　金：国家自然科学基金项目(51206002)

摘　　要：常规水喷淋应急处置氨泄漏过程中,泄漏氨被水吸收后会发生氨气(NH_3)继发性从喷淋溶液中逸出,引发二次大气污染,重新构成危险源、污染源的现象。基于双膜传质理论首先对应急处置过程中NH_3的迁移转化进行理论分析,明确继发性NH_3逸出的主要来源;然后构建了NH_3逸出速率和NH_3累积逸出量的数学计算方程,并确定影响参数;最后根据影响参数给出了氨泄漏应急处置中有效净化吸收NH_3、避免二次大气污染的抑制途径及措施建议。During the conventional sprinkler emergency treatment of ammonia leakage,the absorbed ammonia secondarily escapes from water to air,which results in secondary air pollution,threatening the lives of people and the ecological environment.Based on the two-film mass transfer theory,this paper firstly clarifies the migration of NH3 in the liquid-gas two-phase interface.Secondly the paper establishes the equation of NH3 escape velocity and cumulative outflow,and the influence parameters are pointed out.Finally,the paper puts forward measures to effectively purify and absorb NH3 in the air.

关 键 词：水喷淋应急处置 氨泄漏 NH3逸出量 二次大气污染 双膜传质理论 抑制途径 

分 类 号：X937[环境科学与工程—安全科学] TQ086[化学工程]