氨合成工段主要设备氨泄漏危害后果估算  

Consequence Estimation of a Leakage for the Main Devices in Ammonia Synthesis Section

作　　者：胡德栋[1] 纪纯明[1] 张庆[1] 田龙龙[1] 于光[1] 

机构地区：[1]青岛科技大学机电工程学院,山东青岛266061

出　　处：《青岛科技大学学报（自然科学版）》2011年第3期272-275,280,共5页Journal of Qingdao University of Science and Technology:Natural Science Edition

基　　金：国家863计划资助项目(2006AA04Z17);山东省科学技术发展计划资助项目(2006GG3210006)

摘　　要：进行氨合成工段氨泄漏危害半径的估算,对合成氨企业的选址及应急救援预案的制定具有重要的意义。采用成熟的高斯烟团模型对山东省某化肥厂的氨合成工段主要设备氨泄漏危害后果进行了估算。估算结果为:氨合成工段氨泄漏污染的重度、中度、轻度危害半径在静风条件下分别为50.27、101.92、146.99 m;当风速为2.5 m.s-1时,下风向危害半径分别为221.16、503.05、770.09 m,对人横风方向的重度、中度、轻度危害距离分别为39.28、75.40、114.85 m。对人半致死浓度为4 723 mg.m-3,接触时间15 min,死亡率为31%;接触时间5 min,死亡百分率为10%;当接触时间为2 min,死亡率为2.5%。It has a great significance to calculate the consequence of ammonia leakage on the synthesis ammonia section for the selection of synthesis ammonia plant and the development of emergency plan.The damage consequence of ammonia leakage of the main devices in the synthesis ammonia section,a chemical fertilizer plant in Shandong,was estimated using the Gauss puff model in this paper.It was found that the radius of the injured area,the moderate hazardous area and the slightly hazardous area of the ammonia leakage in ammonia synthesis section with no wind was 50.27,101.92,146.99 m respectively.At the wind speed of 2.5 m·s-1,the downwind hazardous radius of them was 221.16,503.05,770.09 m,respectively.Whereas,the radius in the horizontal direction was 39.28,75.40,114.85 m,respectively.Semi-lethal concentration was 4 723 mg·m-3.The death rate is 31% with 15 min contact time at semi-lethal concentration.When the contact time was 5 min at the semi-lethal concentration,the death rate approached 10%.As the contact time decreased to 2 min,the death rate reached 2.5%.

关 键 词：氨合成工段 泄漏危害后果 估算 高斯烟团模型 

分 类 号：TQ086.5[化学工程]