Quantitative assessment and modeling of the propensity for fast flames and transition to detonation in methane (CH4), ethane (C2H6), ethylene (C2H4) and propane (C3H8)

对甲烷 (CH4)、乙烷 (C2H6)、乙烯 (C2H4) 和丙烷 (C3H8) 中快速火焰和爆炸过渡的倾向进行定量评估和建模

• 批准号: 476567-2014
• 负责人: Radulescu, Matei
• 金额: $ 4.3万
• 依托单位: University of Ottawa
• 依托单位国家: 加拿大
• 项目类别: Collaborative Research and Development Grants
• 财政年份: 2017
• 资助国家: 加拿大
• 起止时间: 2017-01-01 至 2018-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=618563
• 关键词: Quantitative; assessment; modeling; propensity; fast

The proposal is collaborative research between the University of Ottawa and Shell Canada, which addresses the likely hood that an accidental release of a flammable mixture (for example, in a processing plant or during transport) may lead to a fast flame or detonation. The present project aims to improve the current understanding and predictive capabilities of such supersonic reaction waves with the development of predictive engineering and numerical tools capable of assessing such events. These tools will help anticipate when these waves can arise and reveal measures that could be taken to prevent them. The results will provide a significant contribution to the improvement of process safety in the petrochemical industry. Canada, with its large chemical industry and dense pipeline network, will derive direct benefit in process safety design and performance.The proposed work addresses the likelihood for such fast flames and transition to detonation in volatile mixtures relevant to the petrochemical industry, namely methane, ethane, ethylene, and propane. The configuration studied is the high speed deflagrations obtained after the interaction of a detonation wave with a perforated plate. As shown previously, this unique set-up allows isolation of these fast reaction waves in the laboratory. It allows determination of the conditions and physical mechanisms controlling their establishment, sustenance and potential to undergo DDT. The investigation combines experiments and numerical modeling. Lab-scale experiments and numerical simulations performed with state-of-the-art physical and computational models developed in the proposed research will be used to generate scaling laws relating the acceleration rates of high speed flames with the thermo-chemical properties of the reactive mixtures. The proposed research will also contribute towards the training of two postdoctoral fellows and three graduate students.

该提案是渥太华大学和加拿大壳牌公司之间的合作研究，该研究涉及可能导致易燃混合物意外释放（例如，在加工厂或运输过程中）可能导致快速火焰或爆炸。本项目旨在通过开发预测性工程和能够评估此类事件的数值工具的开发来提高此类超音速反应波的当前理解和预测能力。这些工具将有助于预测这些波浪何时会出现并揭示可以采取的防止它们的措施。结果将为石化行业的工艺安全性改善提供重要贡献。加拿大凭借其庞大的化学工业和密集管道网络将在过程安全设计和性能方面获得直接利益。拟议的工作解决了这种快速火焰的可能性，并过渡到挥发性混合物中与石油化学产业相关的挥发性混合物，即甲烷，乙烷，乙烷，乙烯和丙烷。研究的配置是在与穿孔板的爆炸波相互作用后获得的高速偏flagration。如前所述，这种独特的设置允许在实验室中分离这些快速反应波。它允许确定控制其建立，寄托和潜力进行滴滴涕的条件和物理机制。该研究结合了实验和数值建模。在拟议的研究中开发的最先进的物理和计算模型进行的实验室规模实验和数值模拟将用于生成缩放定律，将高速火焰的加速度与反应性混合物的热化学特性有关。拟议的研究还将有助于培训两个博士后研究员和三名研究生。