A simple design method of dust explosion venting size at elevated static activation pressure |
| |
| Institution: | 1. State Key Laboratory of Fine Chemicals, Department of Chemical Machinery and Safety Engineering, Dalian University of Technology, Dalian, Liaoning, 116024, PR China;2. Tianjin Fire Research Institute of MEM, Tianjin, 300381, China;1. Department of Chemical Engineering, Indian Institute of Technology Roorkee, Roorkee, 247667, Uttarakhand, India;2. Assam Energy Institute, Centre of Rajiv Gandhi Institute of Petroleum Technology, Sivasagar, 785697, Assam, India;3. Department of Chemical Engineering, Indian Institute of Technology (Indian School of Mines), Dhanbad, Dhanbad, 826004, Jharkhand, India;1. School of Emergency Management and Safety Engineering, China University of Mining and Technology (Beijing), Beijing, 100083, China;2. State Key Laboratory of Coal Resources and Safety Mining, China University of Mining and Technology, Beijing, 100083, China;1. College of Safety and Environmental Engineering, Shandong University of Science and Technology, Qingdao, 266590, China;2. Mine Disaster Prevention and Control-Ministry of State Key Laboratory Breeding Base, Shandong University of Science and Technology, Qingdao, 266590, PR China;3. Qingdao Intelligent Control Engineering Center for Production Safety Fire Accident, Qingdao, 266590, PR China;1. School of Safety Science and Engineering, Xi''an University of Science and Technology, 58, Yanta Mid. Rd., Xi''an, 710054, Shaanxi, PR China;2. Xi''an Key Laboratory of Urban Public Safety and Fire Rescue, 58, Yanta Mid. Rd., Xi''an, 710054, Shaanxi, PR China;3. Shaanxi Engineering Research Center for Industrial Process Safety & Emergency Rescue, 58, Yanta Mid. Rd., Xi''an, 710054, Shaanxi, PR China;4. Shaanxi Key Laboratory of Prevention and Control of Coal Fire, 58, Yanta Mid. Rd., Xi''an, 710054, Shaanxi, PR China;5. International Research Center for Renewable Energy, State Key Laboratory of Multiphase Flow in Power Engineering, Xi''an Jiaotong University, Xi''an, Shaanxi, 710049, PR China;6. Xi''an Xinzhu Fire&rescue Equipment Co., Ltd, Technology 1st Road 17, High-tech District, Xi''an, 710075, Shaanxi, PR China |
| |
| Abstract: | To develop the application of explosion venting technology in high-pressure vessels, a new model for the design of dust explosion venting size was presented, which took the physicochemical phenomenon deriving from the elevation of the static activation pressure into account. Firstly, for confined pressure rise, the wall quenching effect originating from the dust flame thickness was considered by adopting the three-zone model. Secondly, for the venting pressure rise, the energy loss due to the discharge of high-energy burnt mixture (quantified as the specific surface area loss of the flame) was taken into account and the induced turbulence factor was introduced. Thirdly, for the venting pressure drop, a dynamic pressure relief capability evaluation model which takes into account the flame morphology evolution (tear-shaped flame) and the proportion of discharged mixture (relative volume ratio) at elevated activation pressure was proposed. The predicted maximum reduced pressure and venting size were checked against the PMMA explosion experiments and a more great performance was obtained compared with standards. |
| |
| Keywords: | Dust explosion venting Explosion venting size Elevated static activation pressure Pressure prediction |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
