The Capacity Transformation Of The Desulfurization System Of 600MW Plant Based On Numerical Simulation

The presence of sulfur dioxide has a certain degree of damage to natural ecological environment, human health and the industrial and agricultural production.And the thermal power industry counts for most of the atmospheric pollutants emission. With the tightening of national policy of power plant air pollutants emission standards, the transformation and operation optimization of the system of desulfurization system has become an important research direction of plant energy conservation and efficiency improvement.This research is based on KWPKC 600-800 type desulfurizing slurry-circling pump of 600MW unit produced by the KSB company, which is a single suction, single stage horizontal centrifugal pump. Its output and efficiency cannot meet the new desulfurization demand of power plant, which leads to the capacity renovation, and a more energy-saving solution to achieve the purpose of capacity and efficiency increasing.In this paper, first of all, build up 3d entity model of the pump basing on the surveying and mapping and data acquisition, and transform model parameters of vanes according to the revamping scheme. Then meshing the model with Gambit and import it into Fluent numerical simulation software, set the boundary conditions, and select the SIMPLE algorithm to perform the simulation calculation, in order to observe the performance of the slurry pump before and after the transformation. The comparative analysis of the performance of the pump before and after the modification helps to verify the feasibility of this slurry pump capacity increasing plan. A certain practical operation scheme is also put forward according to the practical operation of a certain power plant.