300MW供热机组循环水余热利用项目改造和优化

发布时间：2018-03-05 02:19

本文选题：循环水余热利用　切入点：安装调试　出处：《华北电力大学》2014年硕士论文　论文类型：学位论文

【摘要】：发电厂在电能生产过程中对于蒸汽的余热利用技术应用已经较为成熟，然而，对循环水系统的余热利用问题却还未被人们所重视，没有采取措施有效回收利用。当前，在火电企业大力推行节能减排，挖掘余热利用潜能的形势下，循环水余热利用问题日益被人们所重视。国泰发电有限责任公司热泵系统的投入应用在国内300MW等级供热电厂为第一家，设计和施工都没有现成的经验和模式可以借鉴，面对困难和挑战，，项目各参建单位迎难而上，攻坚克难，工程投产以来，热泵系统各项指标均达到设计要求，取得良好经济效益及社会效益。本研究主要针对国泰发电公司基于吸收式热泵技术的热电循环水余热利用项目，通过对项目建设需求、技术问题、工程设计等分析，阐述了项目调试、试运和改造优化过程。最终通过试验验证，该项目在节能效果良好、经济效益显著。实践证明，利用吸收式热泵提取电厂循环水余热的项目具有非常广阔的发展空间。首先应用用户调查法对该项目进行热负荷需求分析，论证项目建设的必要性，并对本项目所使用的核心技术——吸收式热泵技术的原理及应用进行阐述；然后对项目的循环水、电气、热工控制等系统从技术角度进行了可行性研究；对项目的安装调试过程进行了详细阐述；首次试验后对系统进行了改造优化。最终通过有效解决现场调试过程中遇见的问题，进行分析总结经验，制定有效的技术措施和操作规程。使得热泵系统达到设计效能，国泰300MW机组循环水余热改造项目获得圆满成功，具有较好的技术、经济和社会效益。
[Abstract]:The technology of steam waste heat utilization in power plant is mature, however, the problem of waste heat utilization in circulating water system has not been paid much attention to, and no measures have been taken to recycle it effectively. In the situation where thermal power enterprises vigorously promote energy saving and emission reduction, and tap the potential of waste heat utilization, The utilization of waste heat of circulating water has been paid more and more attention to. The application of heat pump system in Cathay Pacific Power Co., Ltd. is the first one in 300MW grade thermal power plant in China. There is no experience and model for reference in design and construction. In the face of difficulties and challenges, the participating units of the project have met the design requirements for the heat pump system since the project was put into operation. This research mainly aims at the project of waste heat utilization of thermoelectric circulating water based on absorption heat pump technology in Cathay Pacific Power Generation Company, through the analysis of project construction requirements, technical problems, engineering design, etc. The optimization process of debugging, trial operation and transformation of the project is described. Finally, the test proves that the project has good energy saving effect and remarkable economic benefit. The project of using absorption heat pump to extract waste heat from circulating water in power plant has a very broad development space. Firstly, the heat load requirement of the project is analyzed by the method of user investigation, the necessity of the project construction is proved, and the principle and application of absorption heat pump technology, which is the core technology used in this project, are expounded, and then the circulating water of the project is discussed. The feasibility of the electrical and thermal control system is studied from the technical point of view, and the installation and debugging process of the project is described in detail. After the first test, the system was reformed and optimized. Finally, by effectively solving the problems encountered in the field debugging process, analyzing and summarizing experience, making effective technical measures and operation rules, the heat pump system can achieve design efficiency. The project of waste heat retrofit of circulating water of Cathay 300 MW unit is successful and has good technical, economic and social benefits.
【学位授予单位】：华北电力大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TM621

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