Numerical Simulation Of Wave-plate Gas-liquid Separation

Gas-liquid separation technology is widely used in various fields,such as energy,electric power and industrial. In oder to realize the energy strategy core of the clean energyutilization, energy conservation and emission reduction, energy efficent utilization, theseparation technology which is safe, economic, efficient and stable is inevitable choice.Wave-plate gas-liquid separation has the characteristcs of compact structure and highseparation efficency. Therfore, this thesis intends to carry on the numerical simulationresearch and analysis of the wave-plate gas-liquid separation with Fluent6.3. Wave-platesturcture is complex, included two phases(gas and liquid) and three flow fields(gasphase,droplet phase and film phase). At the micro level, it has carried on the comprehensiveanalysis of liquid droplets of the physical property, depositon and entrainment. At the macrolevel, it has gave a deep investigation on the droplets dimensions and the velocity of themain stream flow field which have an impact on wave-plate gas-liquid separationperformance.In this master’s thesis, a model of three-flow-field with two phases has been used toanalyze the characteristics of the flow fields. For the gas phase, a k model has beenused at first, the droplets transport and deposition is then calculated by Eulerian-Lagrangianmultiphase flow calculation method. The analysis of the turbulent kinetic energy of thedispersed phase and turhulent dispersion can be better understand the droplets dimenssionand velocity that important to the quality of the separation. This article respectivelysimulate two categories waveform (mitsubishi and westinghouse). There are two factorsthat are separation efficiency and pressure drop considered on the simulation analysis. Theresults indicated that the captured particle size saltation interval is varies with thecorrugated plate structure. At the same time, a wall-film model has been used on thesimulation of the liquid film and analysis the influence on pressure drop. The synacticeffction of recirculation and main stream flow on the break of the film is critical factor onlarge curvature plate. The above contents have a significant in the experiment research andoptimization of structure of wave-plate separation in the future.