太阳能热泵技术在油田余热回收中的应用研究

发布时间：2018-06-02 15:53

本文选题：油田余热回收 + 污水源热泵　；参考：《西安工程大学》2015年硕士论文

【摘要】：原油在输送过程中需要维持一定的温度,通常采用加热炉等常规加热方式来实现原油输送系统的加热。常规加热方式不仅加热效率低,而且耗费大量的一次能源,造成很大的浪费。油田含油污水中蕴含着大量的低温余热,这些低温污水一年四季温度变化较小,数量稳定,但大部分仅用于回注或直接排放,未能被充分利用;我国北方油田存在大量的可利用的太阳能资源。利用太阳能热泵技术能够回收部分低温余热,充分利用太阳能资源,且提供的热水刚好能够满足油田的用热需求,具有很大的节能潜力。本文针对石油生产企业的余热资源现状,综述了国内外太阳能联合污水源热泵系统应用于油田余热回收的研究现状;分别介绍了污水源热泵系统和太阳能联合污水源热泵系统回收油田余热的基本原理;提出利用太阳能联合污水源热泵系统替代常规加热系统,用以加热原油输送系统,探讨了不同工况下系统的流程及运行模式,并对系统中的主要设备进行计算选型;对高温热泵机组进行热经济性分析,探讨蒸发温度、冷凝温度、一次进水温度等对机组性能的影响,对太阳能联合污水源热泵系统进行节能、经济及环保性分析,并与常规加热方式等进行对比,太阳能联合污水源热泵系统的节能量比污水源热泵系统高17%,前者比后者的年总费用低5.1%,具有很好的节能、经济及环保效益;最后利用TRNSYS软件对太阳能联合污水源热泵系统和太阳能热泵系统进行模拟,得出热泵出水温度与系统COP随时间的变化趋势,结果表明太阳能联合污水源热泵系统具有较高的稳定性。
[Abstract]:It is necessary to maintain a certain temperature in the process of crude oil transportation. Usually, conventional heating methods such as heating furnace are used to realize the heating of crude oil transportation system. Conventional heating not only has low heating efficiency, but also consumes a lot of primary energy, resulting in a lot of waste. There is a large amount of low temperature waste heat in the oily sewage of oil field. The temperature change of these low temperature sewage is small and the quantity is stable all the year round, but most of them are only used for backinjection or direct discharge, and can not be fully utilized. There are a large number of solar energy resources available in the northern oilfields of China. The use of solar heat pump technology can recover some low-temperature waste heat, make full use of solar energy resources, and provide hot water to meet the needs of the oil field, which has a great potential for energy saving. In view of the present situation of waste heat resources in oil production enterprises, this paper summarizes the research status of the application of solar energy combined sewage source heat pump system in oil field waste heat recovery at home and abroad. This paper introduces the basic principle of sewage source heat pump system and solar energy combined sewage source heat pump system to recover waste heat from oil field, and proposes to use solar energy combined sewage source heat pump system instead of conventional heating system to heat crude oil transportation system. The flow and operation mode of the system under different operating conditions are discussed, and the main equipment in the system is calculated and selected, and the heat economy analysis of the high temperature heat pump unit is carried out, and the evaporation temperature and condensation temperature are discussed. The influence of the primary inlet temperature on the performance of the unit, the energy saving, economic and environmental protection of the solar combined sewage source heat pump system are analyzed, and compared with the conventional heating methods, The energy saving of the solar combined sewage source heat pump system is 17% higher than that of the sewage source heat pump system. The former is 5. 1% lower than the latter, which has good energy saving, economic and environmental protection benefits. Finally, the TRNSYS software is used to simulate the solar energy combined sewage source heat pump system and the solar energy heat pump system, and the variation trend of the heat pump effluent temperature and the system COP with time is obtained. The results show that the solar combined sewage source heat pump system has high stability.
【学位授予单位】：西安工程大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：X741;TU83

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