富氧燃烧锅炉设备设计选型及监理研究

发布时间：2018-05-04 16:11

本文选题：富氧燃烧 + 动力学计算　；参考：《华北电力大学(北京)》2016年硕士论文

【摘要】：我国能源资源禀赋特点是“富煤、贫油、少气”。煤炭在我国化石能源资源储量中占比超过93%,是最可靠和最经济的能源资源,煤炭资源的高效清洁利用技术是关系到国家能源安全和发展。二氧化碳减排又是不可逾越的社会问题,CCS技术的发展与应用将是控制温室气体排放、减缓气候变化一条出路。本论文以神华200MW示范项目设计技术研究为基础,对大型富氧燃烧项目相关热力计算进行了详细说明,富氧燃烧计算与空气燃烧条件下烟风煤粉系统的热力计算方法、过程基本相同,但由于富氧燃烧形成的烟气成分与空气燃烧形成的烟气成分显着不同,因此在计算中对相关计算方法进行了相应的说明和修正。富氧燃烧方式下的助燃气是循环烟气和氧气组成的混合气体,在烟气循环运行时补充的是纯度较高的氧气。循环烟气中氧浓度确定之后,计算得到烟气的循环倍率,再通过热平衡和烟气成分循环迭代计算,得出系统热力循环中各部位烟气成分,计算出系统内烟气的气体特性,为锅炉及辅机设备设计提供基础参数。针对烟气成分特性,研究锅炉本体及各辅机设备设计选型重点及要点,明确各设备选择的优缺点和选择条件,达到大型富氧燃烧锅炉设备设计、选型初步设计深度内容,为大型富氧电站建设深度设计提供数据技术支持。研究富氧电站建设设备监理,结合业主管理和监理职责阐述设备监理工作有效运作,文中将监理管理、问题处理、检查评价流程化、表单化,使监理工作一目了然,提出一套适合富氧燃烧锅炉的主要技术及设备设计特点和可操作的设备选型监理办法。
[Abstract]:China's energy resource endowment is characterized by "rich coal, lean oil, less gas." Coal accounts for more than 933 percent of fossil energy reserves in China, which is the most reliable and economical energy resource. The efficient and clean utilization technology of coal resources is related to the national energy security and development. Carbon dioxide emission reduction is an insurmountable social problem. The development and application of CCS technology will be a way to control greenhouse gas emissions and mitigate climate change. Based on the research on the design technology of Shenhua 200MW demonstration project, this paper describes in detail the thermodynamic calculation of large oxygen-enriched combustion projects and the thermodynamic calculation method of soot pulverized coal system under the condition of oxygen-enriched combustion and air combustion. The process is basically the same but the composition of flue gas formed by oxygen-enriched combustion is significantly different from that formed by air combustion so the relevant calculation methods are explained and revised accordingly in the calculation. Under the oxygen-enriched combustion mode, the auxiliary gas is a mixture of circulating flue gas and oxygen, and the high purity oxygen is added to the flue gas in circulation operation. After the determination of oxygen concentration in the circulating flue gas, the circulation rate of the flue gas is calculated, and then through the heat balance and the iterative calculation of the flue gas composition, the components of the flue gas in the thermal cycle of the system are obtained, and the gas characteristics of the flue gas in the system are calculated. Provide basic parameters for boiler and auxiliary equipment design. According to the characteristics of flue gas composition, this paper studies the emphases and essentials of the design and selection of boiler body and auxiliary equipment, clarifies the advantages, disadvantages and conditions of each equipment selection, and achieves the design of large oxygen-enriched combustion boiler equipment and the preliminary design depth of type selection. Provide the data technical support for the construction depth design of the large oxygen-enriched power station. This paper studies the construction equipment supervision of the oxygen-enriched power station, and expounds the effective operation of the equipment supervision work in combination with the owner's management and supervision duties. In this paper, the supervision management, the problem handling, the inspection and evaluation process, the formalization, the supervision work can be made clear at a glance. This paper puts forward a set of main technology and equipment design features for oxygen-enriched combustion boiler and an operable supervision method for equipment selection.
【学位授予单位】：华北电力大学(北京)
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：TK229

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