大型化工企业冷冻水制备系统节能优化研究

发布时间：2018-02-27 01:25

本文关键词： 大型化工企业制冷系统节能优化改造　出处：《华北电力大学》2015年硕士论文　论文类型：学位论文

【摘要】：制冷技术在提高生产工艺技术水平的同时,所引起的严峻的能源和环境问题也受到越来越多的关注。对化工企业的用能大户制冷系统进行优化设计和节能改造,对企业降低运行成本,提升产品质量,创造效益以及落实国家节能减排政策和推动低碳经济发展方面具有重要的现实意义。本课题主要从节能的角度出发,首先通过总结和分析近年来乐凯胶片股份有限公司冷冻水制备系统的运行数据,指出了系统运行过程中存在的问题。然后提出了制冷系统优化设计的基本原则,总结并分析了制冷系统优化设计的主要途径和措施,给出了冷冻水制备系统节能优化技术路线图。其次建立了基于热力学第一定律的螺杆式蒸气压缩式制冷机组的稳态仿真模型,分析了运行过程中冷却水进口温度和冷冻水出口温度变化时对制冷机组性能的影响,为制冷系统的节能优化方案的实施提供技术支持。最后确定了制冷系统的节能优化改造方案,方案实施后不但取得较好的节能效益,也带来了比较大的经济效益,2014年水的消耗量降低65.5%,水单耗降低68.5%,电单耗下降8.7%,全年节约费用为121.7万元,实现综合能耗同比下降5.23%。
[Abstract]:The severe energy and environmental problems caused by refrigeration technology have been paid more and more attention. The optimization design and energy saving transformation of large energy consumption refrigeration system in chemical enterprises have been carried out. It is of great practical significance for enterprises to reduce operating costs, improve product quality, create benefits, implement national policies on energy saving and emission reduction and promote the development of low-carbon economy. By summarizing and analyzing the operation data of refrigerated water preparation system in Lecai Film Co., Ltd in recent years, this paper points out the problems existing in the operation of the system, and then puts forward the basic principles of optimal design of refrigeration system. The main ways and measures of optimal design of refrigeration system are summarized and analyzed. The technical roadmap of energy saving optimization of freezing water preparation system is given. Secondly, the steady state simulation model of screw steam compression refrigeration unit based on the first law of thermodynamics is established. The influence of the inlet temperature of cooling water and the outlet temperature of chilled water on the performance of refrigeration unit is analyzed. This paper provides technical support for the implementation of the energy saving optimization scheme of refrigeration system. Finally, the energy saving optimization reform scheme of the refrigeration system is determined. After the implementation of the scheme, not only good energy saving benefits are obtained, In 2014, the consumption of water was reduced by 65.5%, the consumption of water by 68.5%, the consumption of electricity by 8.7 yuan, and the cost saved by one million two hundred and seventeen thousand yuan in the whole year.
【学位授予单位】：华北电力大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TQ051.5

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