【作者】 郭瑞国；

【导师】 卞新高；

【作者基本信息】 河海大学 ， 机械电子工程， 2006， 硕士

【摘要】 垃圾焚烧处理技术由于在减量化、无害化、资源化方面的综合效果,在我国的大中型城市得到大力推广应用。但是,由于垃圾焚烧炉的燃烧过程是强耦合的多输入多输出非线性系统,传统的燃烧过程自动控制难以满足垃圾稳定焚烧的要求,探索能保证稳定燃烧的燃烧过程控制技术是研究垃圾焚烧技术的关键内容之一。 本文首先阐述了固体垃圾的处理方法,对国内外相关技术的发展作了介绍,并重点讨论了本课题中所采用的气化热解焚烧技术;结合垃圾焚烧炉运行特点,阐述了垃圾焚烧技术原理,分析了垃圾焚烧过程、影响焚烧的主要因素、垃圾焚烧炉燃烧过程自动控制的要求和自动控制策略,进而提出在气化热解焚烧系统的控制方法,即应用模糊控制技术通过对气化炉送风量、二燃室送风量的调节实现温度的控制,从而保证燃烧过程的稳定性。详细研究了模糊控制技术在垃圾焚烧炉燃烧过程中的应用,对模糊变量、隶属函数、模糊规则及控制查询表的建立进行了分析,采用了以炉膛温差、温差变化率为输入变量,气化炉送风量、二燃室送风量为输出变量的模糊控制策略。论文的设计工作还包括垃圾焚烧炉的机械设备组成、电气设备的配置及控制系统的硬件构成、控制系统的软件开发以及人机界面的生成。实践表明,我们的设计方法是可行的,完全可以保证垃圾焚烧炉安全经济运行、炉温稳定及尾气污染控制达标。更多还原

【Abstract】 For the comprehensive effect in reduction, innocuity and renewability, the disposal technology of solid waste combustion has been applied widespreadly in large&midium cities. Due to the combusting process character, the strong coupling, non-linearity, multi-input and multi -output, the conventional control method is hard to satisfy the requirement of the combustion stability of incinerators, so ,to research the combusting process control methods is one of the key on waste combusting technology to ensure the stability of combustion.Firstly, this thesis expoundes the method of disposing solid waste, and, introduces the relative technologies in china and abroad, and describes in detailed about the gasification pyrolysis technology that adopted in the subject. Based on the performance characters of incinerator, this thesis expoundes the theory of combustion technology, analyses the process of waste combustion, the main factors affecting combustion, the requirement and function of incinerator auto-control and fuzzy control strategy. Furthermore, the control method for gasification pyrolysis combustion system was proposed, that is, applying the fuzzy control technology to realize the temperature control by adjusting the air flux of gasification burner and the second furnace and to reach a acceptable stability of combustion. Then, the application design of fuzzy control technology in the process control of waste combustion was described, including fuzzy variable parameters, subject function, fuzzy rule and control querying table. The Fuzzy control strategy which includes two input parameters (temperature deviation, temperature deviation rate) and two output parameters (air flux of the gasification burner, air flux of the second furnace) was adopted. The design content of the subject also included mechanical equipment composition of incinerator, the electric equipment outfit, the composition of the control system hardware, development of software of control system as well as the man-machine interface. Experiments demonstrates that our design is feasible and available , which can fully keep incinerator reliable and economy, and ensure the stability of combustion temperature and the acceptance of controlling the tail gas contamination.更多还原