Research On The Optimum Design Of Rotary Atomizer's Flow Channel For The Waste-to-energy Plant

With the keep developing of waste-to-energy (WTE) technology, the level of equipments research and development in our country is rising rapidly. Since 1990's, our country has began to develop the process of equipments for WTE localization, which made significant progress. Because the huge economic and environment effects the WTE brought that makes it becomes a great potential market, many waste-to-energy plants are going to be established in recent years.This thesis is based on our self-designed rotary atomizer. Some problems occurred in the use of the Waste-to-Energy Plants, for example, the damage of atomizer nozzle's flow channel, clog, and the belt transmission damage, etc. This study first indicates the problems, and then analyses the causes of these problems. After numerical stimulation and analysis for the flow channel, this thesis proposed an improvement plan and the structure of flow channel's optimum design models. By using numerical simulations, the study verifies the feasibility of the optimized model, solved the problems above perfectly, and finally summarizes the empirical formulas in the optimized model.The main investigations in the thesis are as following:â‘ On the basis of a large amount reference, pervious work, and a preliminary study on problems which appear in the equipment's use, it gives out the reason of these problems;â‘¡Deeply analyzing the atomizing principles and overall structure of the rotary atomizer by the CFD Soft-FLUENT, it confirms the main reasons which lead to these problems and the improvement scheme.â‘¢According to the numerical stimulation analyzes and the engineering practice, two optimum schemes are proposed, and the best scheme was obtained. It compares the wall shear stress of the improvement scheme and current scheme, and verifies the superiority of the optimized scheme.â‘£It summarizes the empirical formula according to some parameters in the optimum design process.The research work in this thesis was supported by Chongqing science and technology key projects Fund.