一溴三氟丙烯-氮气复合灭火介质灭火性能研究  

Research on fire-extinguishing perfomance for binary blended agents consisted of 1-bromo-3,3,3-trifluoropropene and nitrogen

作　　者：周彪[1] 周晓猛[1] 赵智[2] 张永丰[3] 

机构地区：[1]南开大学环境科学与工程学院,天津300071 [2]武汉科技大学资源与环境工程学院,武汉4300081 [3]中国科学技术大学火灾科学国家重点实验室,合肥230026

出　　处：《安全与环境学报》2010年第3期162-166,共5页Journal of Safety and Environment

基　　金：国家自然科学基金项目(50706018)

摘　　要：考察了一溴三氟丙烯(简称BTP)与氮气(N_2)复合灭火介质的灭火性能。基于多组分分压原理论述了预混技术的可行性和喷头初始压力对复合灭火介质灭火性能的影响,然后通过协同作用理论模型研究了一溴三氟丙烯与氮气复合灭火介质的协同作用。通过临界灭火试验平台研究了不同比例BTP-N_2复合灭火介质的灭火临界条件,通过喷头释放压力对复合灭火介质影响试验平台分析喷头压力对同比例复合灭火介质灭火性能的影响规律。结果表明,BTP-N_2复合灭火介质的灭火过程中存在协同效应;同比例下的BTP-N_2复合灭火介质,喷头压力与释放量及灭火时间呈负相关性。This article is to present our study on fire-extinguishing performance of binary blended agents of 1-bromo-3,3, 3-trifluoro- propene and nitrogen. To note, 1-bromo-3,3,3-trifluoropropene is known of its good fire extinguishing effect while nitrogen is less efficient in fire extinguishing. Many researches have proved that blended agents not only possess good fire extinguishing ability, which are comparable with halonl301, but also able to reduce the production costs and environmental pollution. Anyway, in-depth understanding of fire-extinguishing performance of binary blended agents of l-bromo- 3,3,3-trifluoroloropene and nitrogen is still needed to be clarified. At first, feasibility of the premix technique was discussed based on the principle of multi-component partial pressure. By analyzing the influencing factors, we noticed that nozzle releasing pressure plays important role in the fire fighting. Second, a synergistic theory model was proposed as well based on the principle of multi-component partial pressure and the combustion theory. It was employed for the explanation of the excellent fire extinguishing effect of the blended agents consisted of 1-bromo-3,3,3-trifluoropropene and nitrogen. Third, platform of fire-extinguishing concentration test was applied to study the critical point condition of fire extinguishing for different ratios of binary blended agent. The impact of nozzle releasing pressure on the extinguishing medium test platform was studied as well to determine the fire-extinguishing concentration of binary blends agents. At last, synergistic effect was confirmed to present in the fire-extinguishing process with BTP - N2 mixture by comparing the experimental concentration and theoretical concentration. It was indicated by good linear correlation within the experimental concentration with measured theory. Nozzle releasing pressure was negatively correlated with extinguishing time. The method has provided a foundation for the development of efficient and clean fire-extinguishing agent and also fo

关 键 词：安全学 BTP—N2复合灭火介质 协同作用预测模型 临界灭火浓度 惰性气体 喷头释放压力 

分 类 号：TQ569[化学工程—炸药化工]