Economic Research Of The Optimization Component In The Tower Of Wet Flue Gas Desulfurization System

The Wet Flue Gas Desulfurization System is the most widely used desulfurization process in thermal power units in China,and it is the key process for comprehensive implementation of ultra-low emission and energy-saving transformation of thermal power units.Choosing a suitable desulfurization scheme is of great significance to improve the comprehensive performance of the power plant.It requires that the selected scheme can achieve the goal of achieving ultra-low emissions on the one hand,and reduce the energy cost of desulfurization on the other hand to achieve energy conservation.Since the desulfurization tower is the core equipment of the desulfurization system,the desulfurization reaction is mainly carried out in the tower.The scheme has been proposed to achieve ultra-clean emission requirements by adding the internal components to the desulfurization tower.This scheme can optimize the internal flow field and enhance the gas-liquid mass transfer effect,thereby improving the desulfurization efficiency.The scheme was studied and analyzed by numerical simulation method and value engineering method.Because the numerical simulation method has the advantages of less physical model test,lower research cost and shorter development period than the experimental method,the Ansys Fluent software is used to model and analyze the desulfurization tower to study the effect of the internal components on the desulfurization efficiency.In order to study the practical application of the components in the desulfurization tower,the application of value engineering is introduced in selection and optimization of the desulfurization scheme,basing on features of value engineering,principle and objective of desulfurization system.In this thesis,AHP is applied index weight determination,and Fuzzy Comprehensive Evaluation is used for functional score calculation in the selection process.Value coefficient method is introduced in optimization of the desulfurization scheme,through which object for optimization is confirmed.Then the thesis presents a case whether adding the components to the desulfurization tower or not to support the study.In the end,the implementation effect of the research projects in this paper was evaluated.