Plenary Lecture 2 Fine Particulate Emission Control of Power Plants

摘要

One of the major air pollution problems of coal fired power plants is fine particulate matter emission. Fine particulate matters are considered potentially hazardous to health because of their high probability of deposition in deeper parts of the respiratory tract. Electrostatic precipitators (ESP) are one of the most widely used devices which are capable of controlling particulate emission effectively from power plants and other process industries. ESP system consists of flow field, electrostatic field and particle dynamics. Although the dust collecting efficiency of the industrial ESP is as high as 99.5%, an upcoming strict environmental protection agency (EPA) regulation has led the Australian power plants to start finding new technologies to meet new requirements for emission control at minimum cost and thus control their fine particulate emissions to a much greater degree than ever before. This presentation describes the numerical simulation and model development of ESP systems (i.e. flow field, electrostatic field and particle dynamics) using computational fluid dynamics (CFD) code FLUENT and successful application of those models into an industrial ESP. The presentation recommends the options for controlling fine particle emission of power plants through improvement of the ESP efficiency.