惰化防爆技术及在煤粉制备系统中的应用
发布时间：2018-10-22 19:40
【摘要】：简述国内关于惰化防爆的标准规范及要求,给出爆炸性环境极限氧浓度的测试方法、测试设备和惰化过程可燃性分布图。分析加压惰化、真空惰化、通流惰化和置换惰化的技术要点、应用范围和惰性气体用量及惰化次数的计算方法,并给出被保护系统惰化氧浓度安全裕量的设定原则和预警分级。以制粉系统为例,分析了惰化工艺流程和维持惰化气氛的条件,并计算了不同氧浓度和监测方式下的初始惰化时间。建议采用惰化保护的系统根据氧浓度设定为三级预警,即最大允许氧浓度MAOC、联锁停车氧浓度TP、惰化系统动作氧浓度SP。
[Abstract]:This paper briefly describes the domestic standard specifications and requirements for inerting explosion prevention, and gives the test methods for the limit oxygen concentration in explosive environment, the test equipment and the flammability distribution diagram of the inerting process. The main technical points of pressurized inerting, vacuum inerting, current flow inerting and displacement inerting are analyzed. The application range, inert gas dosage and calculation method of inerting times are analyzed. The setting principle and early warning classification of the safety margin of inerted oxygen concentration in the protected system are given. Taking the pulverizing system as an example, the process flow of inerting and the conditions for maintaining inerting atmosphere are analyzed, and the initial inerting time under different oxygen concentrations and monitoring methods is calculated. It is suggested that the system with inerting protection should be set at three levels according to oxygen concentration, that is, maximum allowable oxygen concentration (MAOC,), interlocking oxygen concentration (TP,), operating oxygen concentration (SP.) of inerting system.
【作者单位】： 公安部天津消防研究所;
【基金】：公安部科技强警基础工作专项项目(2016GABJC35)
【分类号】：X932
本文编号：2288115
[Abstract]:This paper briefly describes the domestic standard specifications and requirements for inerting explosion prevention, and gives the test methods for the limit oxygen concentration in explosive environment, the test equipment and the flammability distribution diagram of the inerting process. The main technical points of pressurized inerting, vacuum inerting, current flow inerting and displacement inerting are analyzed. The application range, inert gas dosage and calculation method of inerting times are analyzed. The setting principle and early warning classification of the safety margin of inerted oxygen concentration in the protected system are given. Taking the pulverizing system as an example, the process flow of inerting and the conditions for maintaining inerting atmosphere are analyzed, and the initial inerting time under different oxygen concentrations and monitoring methods is calculated. It is suggested that the system with inerting protection should be set at three levels according to oxygen concentration, that is, maximum allowable oxygen concentration (MAOC,), interlocking oxygen concentration (TP,), operating oxygen concentration (SP.) of inerting system.
【作者单位】： 公安部天津消防研究所;
【基金】：公安部科技强警基础工作专项项目(2016GABJC35)
【分类号】：X932
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