Numerical Study on Flow Characteristics of Strong Ejection Release Flare on the Offshore Platform
Regarding the release flare with strong ejection,the Fluent software was adopted to simulate flow characteristics of the auxiliary ejector and flare head.The basic model calculation shows that,the aux-iliary ejector's ejection coefficient is 3.25,and the flare head's ejection ratio is 0.77.Orthogonal analysis of the auxiliary ejector's optimum structural parameters indicates that,the parameter combination are as follows:a 4° mixing pipe expansion angle,a 7.5 mm throat annular space gap,a 7 mm gas inlet diameter,a 60 mm air inlet diameter and a 6.30 ejection coefficient of the optimized structure.The optimized param-eters of the flare head are as follows:a 7°cylinder expansion angle,a 207 mm wind shield gap,8 auxiliary ejectors,a 242 mm depth of main vent pipe,a 0.89 ejection ratio of the optimized structure and a 16%in-jection performance increased.
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