Parametric Design And Numerical Simulation Of Spray Tower

Absorption tower is the core equipment of desulfurization system. As the firsttype adopted in China, spray tower has been always popular in China’sdesulfurization field for its mature technology, simple structure and reliableoperation. At present, when spray tower is being designed, the optimization anddetermination of related parameters relies on the experience of designers andrepeated simulation, which demands great workload and long design cycle but leadsto low efficiency. Therefore, in order to raise the designing efficiency of spray towerand optimize its performance, this thesis conducts researches as follows:First，apply VB Language to the secondary development of SolidWorks todevelop parameterized design system of spray tower which combines spray towerdesigning and3D drawing. Including such four modules as automadesign computingmodule, database module, model base module and parameterized designing module.This system can automatically complete spray tower designing and drawing, whichwill not only raise the efficiency of designing and development but also avoid a lotof wasteful duplication of effort.Second，when Fluent software is used, Euler-Lagrange model can simulate thetwo-phase flow field. This thesis explores the influence of length of inlet flue gasduct、 inclination angle of inlet flue gas duct、the distance、gas speed in empty towerand liquid-gas ratio on the performance of spray tower, and obtains the followingfindings: In temperature reduction of spray tower before the gas come into the tower,suitable increase of length of inlet flue gas duct can raise efficiency of the reduction;The optimal val of inclination angle is6°-12°; When the distance between thebottom of inlet flue gas duct and the fluid level of slurry pond is about2.7m, thewhole performance is relatively good; raising the gas speed in empty tower canreduce equipment investment and floor area; and when liquid-gas ratio ranges from10.8-14L/m3, the loss of resistance in the tower is not obvious, in which case raisingthe liquid-gas ratio can raise the desulfurization degree.