3D Numerical Simulation Of The Marine Incinerator And Research Of Fuzzy Control

The marine incinerator is one of the most important antipollution equipments in ships. With the development of the global economy and the increased number of ships, ship waste pollution to the marine environment is also becoming more and more serious. The technology for dealing with solid waste in the reduction, elimination of hazards aspects, becoming a more mature measure and is widely used in ships. Because of its particularity, the ship waste has a complicated component which has a great effect on the stability of burning. The process of waste burned in the marine incinerator is coupling with multiple-input and multiple-output nonlinear system, which makes the traditional control system can't meet the requirements and restrain the development of the marine incinerator technology. This thesis aims at the marine incinerator technology and the special structure of the incinerator, which starts from the stability of the burning process, researching the stability of the pressure in the furnace and optimizing the structure of the waste incinerator. This thesis first analyzes the waste incineration process, the physical and chemical characteristics, and then explains the importance of burning stability and the key parameters that effect the burning. Combined with the incinerator's operational features, it has researched on the mechanism of the combustion and the contamination.This thesis has applied numerical analysis methods to have a numerical simulation to the marine incinerator in the internal field. From the analysis of the results, we improved and optimized the structure of the chamber. The incinerator is expected to increase greatly in efficiency and reduce a lot in pollution emissions.Through the process analysis of waste incineration, the air damper adjustment is the most important factor that impacts the efficiency of waste incineration in a number of factors. Although the air damper adjustment does not directly affect the burning of garbage, it has a direct impact on the internal air that get into the furnace, the pressure in the chamber, temperature and the exhaust gas temperature, the efficiency of waste burning. Therefore air damper adjustment has directly worked on the stability of the garbage burning, burning efficiency, the second emission, low-temperature corrosion, high temperature slagging. This is economy, such as the entire waste incineration process to maintain stability, the burning of high-performance, stability must be lower in fluctuations for the air damper, so the pressure in the chamber, temperature and the furnace exhaust temperature must be coordinated, and stay in a more ideal situation.In order to improve the stability of incinerator's burning, this thesis used the modern computer technology and modern theory of intelligent control, researched and developed an applicable control system to the marine incinerator air damper, introduced the fuzzy control methods and modern intelligent control methods to the marine incinerator control system without precise mathematical model. A fuzzy controller with numerical simulation for the marine incinerator was designed based on the numerical analysis.