Parameter Optimization And Performance Prediction Research On Desulfurization Dust Removal Pump

Coal resource is a modern energy fuel,Its produced waste gas such as carbon dioxide, sulfur dioxide will lead to environmental problems,which is an urgently schedule to be solved by various countries. And the desulfurization dust removal pump has the function of sulfur removal, it is an important device in the desulfurization system.Therefore, aiming at the shortcomings of the conventional pump in this regard, the purpose of this paper is to design a kind of desulfurization dust removal pumps,which not only can satisfy the performence of high efficiency,corrosion,energy conservation,environmental protection,and not affected by working conditions, and so on,What’s more,can reach the function of desulfurization dust removal.This paper’s main topics are as follows:(1) Completed the2D hydraulic design for desulfurization dust removal pumpthe by using the hydraulic design method and carried out the structure design based on CFturbo software,which provides a more convenient operation for the parameterized modeling of desulfurization dust removal pump.(2) By means of the description of the computational fluid dynamics,conducted a numerical simulation and analysis for the internal flow field of desulfurization dust removal by Pumplinx and a preliminary forecast of its efficiency and cavitation was completed;(3) Based on the technology of flow field numerical simulation and analysis, selected the desulfurization dust removal pump’s parameters of impeller outlet width, blade inlet Angle and outlet Angle and the Angle as the affecting factors to design the orthogonal experiment,obtained the optimum process parameters combination of various parameters’ effect on the single quality evaluation index by Range Analysis method, and verified its rationality, which provides some references for the design of desulfurization dust removal pump.(4) Utilized the Genetic Algorithm and selected impeller outlet width b2, blade inlet Angle β1blade outlet Angle β2and Angle to carry on a crossover and mutation operations for them, and got a new crossover parameters combination, and by using the Pumplinx software to do an internal flow field simulation, respectively to find the optimal combination, and compared this parameter combination with the former efficiency and cavitation,which illustrated the feasibility of genetic algorithm’s optimizing the desulfurization dust removal pump.(5) Took energy loss and minimum NPSH of desulfurization dust removal pump as the objective function, then chose impeller diameter D2, leaf inlet settle angle β1, leaf outlet settle angle β2, leaf number Z, impeller outlet width b2, leaf inlet diameter D1as design variables, set up a multi-objective function to solve, the simulation results show that the effect of this optimized model was good, having high practical value,which provides another method for the determination of main parameters of the desulfurization dust removal pump impeller.By designing the desulfurization dust removal pump and analysing the internal flow field,This paper completed the desulfurization dust removal pump’s scheme of the orthogonal experiment,obtained the effect order of various parameters on the efficiency of pump, NPSH with Range Analysis Method and combined with genetic algorithm to get the desulfurization dust removal pump’s optimal structure parameters,which improve the efficiency of designing the desulfurization dust removal pump.