HYDROMECHANICAL PERFORMANCE OF NEW ELLIPTICAL FIXED VALVE TRAY

Abstract

Abstract: A new type of anti-clogging trays--elliptical fixed valve trays was developed based on the improvement of the existing fixed valve trays. An experimental study was carried out on the fluid mechanics performance of the elliptical fixed valve tray in a 1 200 mm diameter cold model column, using air-water as the experimental system, the tray pressure drop, entrainment and leakage were measured by changing structural and operational parameters. The results showed that the entrainment rate and leakage rate of foam were lower and the pressure drop was higher on the tray of elliptical fixed valve. Compared with sieve tray, the performance of gas loading was better and the comprehensive performance was better. In order to optimize the tray structure design, the two-phase flow field of elliptical valve trays was analyzed by computational fluid dynamics (CFD), which could further improve tray performance and broaden the application prospects of elliptical valve trays in the petrochemical industry.

Key words: elliptical fixed valve tray, sieve tray, hydromechanical properties, numerical simulatio

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