热媒油炉在真空碳酸盐法脱硫工序中有很重要的作用,它工作正常与否,直接关系到单质硫的回收率和残余气体能否达标排放的问题。生产过程中,热媒油炉系统出现了热媒油(HOT MEDIUM OIL)温度达不到设定值、热媒油炉在开工时不好点火、正常...热媒油炉在真空碳酸盐法脱硫工序中有很重要的作用,它工作正常与否,直接关系到单质硫的回收率和残余气体能否达标排放的问题。生产过程中,热媒油炉系统出现了热媒油(HOT MEDIUM OIL)温度达不到设定值、热媒油炉在开工时不好点火、正常运行期间突然灭火等问题,影响了煤气的净化进程。我们对其进行了检修,解决了故障,保证了煤气的净化,节约了能耗。展开更多
The leaks of pressurized hydrogen can be ignited if an ignition source is within a certain distance from the source of the leaks, and jet ftres or explosions may take place. In this paper, a high speed camera was used...The leaks of pressurized hydrogen can be ignited if an ignition source is within a certain distance from the source of the leaks, and jet ftres or explosions may take place. In this paper, a high speed camera was used to investigate the ignition kernel development, ignition probability and flame propagation along the axis of hydrogen jets, which leaked from a 3-ram-internal-diameter nozzle and were ignited by an electric spark. Experimental results indicate that for successful ignition events, the ignition delay time increases with an increase of the distance between the nozzle and the electrode. Ignitable zone of the hydrogen jets is underestimated if using the predicted hydrogen concentration along the jets centerline. The average rate of downstream flame decreases but that of the upstream flame increases with the electrode going far from the nozzle.展开更多
文摘热媒油炉在真空碳酸盐法脱硫工序中有很重要的作用,它工作正常与否,直接关系到单质硫的回收率和残余气体能否达标排放的问题。生产过程中,热媒油炉系统出现了热媒油(HOT MEDIUM OIL)温度达不到设定值、热媒油炉在开工时不好点火、正常运行期间突然灭火等问题,影响了煤气的净化进程。我们对其进行了检修,解决了故障,保证了煤气的净化,节约了能耗。
基金Supported by the Fundamental Research Funds for the Central UniversitiesNational Natural Science Foundation of China(No.50806071)and(No.51276177)
文摘The leaks of pressurized hydrogen can be ignited if an ignition source is within a certain distance from the source of the leaks, and jet ftres or explosions may take place. In this paper, a high speed camera was used to investigate the ignition kernel development, ignition probability and flame propagation along the axis of hydrogen jets, which leaked from a 3-ram-internal-diameter nozzle and were ignited by an electric spark. Experimental results indicate that for successful ignition events, the ignition delay time increases with an increase of the distance between the nozzle and the electrode. Ignitable zone of the hydrogen jets is underestimated if using the predicted hydrogen concentration along the jets centerline. The average rate of downstream flame decreases but that of the upstream flame increases with the electrode going far from the nozzle.
