Study On The Hydrodynamics Performance Of New Type High Flow-guided Sieve Tray

In this paper, the background of tower equipment and the hydrodynamics performance of the sieve tray were introduced, and prospect the research and development of the tower equipment. The structure and performance of flow-guided sieve tray were summarized. The hydrodynamics of high efficient flow-guided sieve tray were experimentally studied with a air-water system in aφ600mm circular column. Pressure drop,entrainment,weeping and foam thickness were measured. The experimental data have been correlated and the new model of pressure drop, entrainment and weeping have been established . The comparison of the tested with calculated date shown that the model proposed in this paper is reliable. These models will play a reference role for new tray design . Comparing the result of the trays , then the construction parameters' contribution to the performance of the tray in the same operation condition was obtained, which have a reference role for design tray for different system. The velocity distribution and the reciprocity of the two phases on the high efficient flow-guided sieve tray were analyzed and researched. By concrete analysis the reciprocity mechanism of the vapor and liquid, considered that vapor upright through the liquid has a resisting force to liquid, and the vapor through the oriented hole has driving force to liquid in the two phase flow system on the tray. The paper educed the momentum equations to describe liquid flow on the tray with two phasess crossflow. Resisting and driving force of vapor exerted to liquid flow were considered in the momentum equations. Set up the boundary conditions and resolve measure which were needed in the model calculation.