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注汽系统用能分析及提高注汽锅炉效率研究
Analysis and Approaches to Improving of the Thennal Efficiency of Steam Injeeting Boiler
【作者】 王春华；
【作者基本信息】 大庆石油学院 ， 动力工程， 2009， 硕士
【摘要】 稠油的开采以注入蒸汽的热采方法为主,占稠油产量80%以上的稠油,是以注入蒸汽的方法采出的。在稠油开采过程中,注汽系统各环节均存在不同程度的能量损失。为了分析评价注汽系统的用能状况,找出用能薄弱环节,为企业节能技术改造提供依据,必须对稠油热采注汽系统进行热力学分析。注汽系统是稠油开发的重要组成部分,也是最大耗能因素。为达到节能降耗、降低稠油开采成本的目的,近年来,不少高新配套技术在注汽系统上得到应用。本文通过理论分析,结合技术原理,进行了配套技术的优化,对提高注汽锅炉运行的经济效益提供了理论依据,对注汽系统应用配套技术提出了指导意见。然后根据注汽系统各个环节组成特点,建立了能量转换分析模型,给出了评定准则,并利用测试数据进行了分析计算。在此基础上对注汽系统及各部分的用能状况进行了分析评价,找出了用能薄弱环节,并对形成原因作了分析。最后从降低注汽锅炉排烟温度和减少空气系数(氧气含量)两个方面开展了提高注汽锅炉运行热效率研究。从理论分析、试验、设计、实际改造运行及节能效益等方面来看,均达到了预期效果。本文研究成果,可作为后续研究工作的基础,对同类情况有指导意义。
【Abstract】 The main method of heavy oil recovery is steam injection of thermal recovery in China,The heavy oil,its output is exceeded 80 percents,is recovered by this way.In the process of heavy oil thermal recovery,each part has energy losses.In order to assess and analyze the energy of the system and found out weak links and equipments.it will provides the basis for the change of the enterprise energy conservation technique.The thermodynamic analysis is must developed in the steam injection system of heavy oil thermal recovery.Steam injection is an important part in heavy oil production. It is also a factor which consumes most energy. To save energy and reduce production cost, new technology has been used in steum injection system recently.In this paper ,theoretical basis of enhancing economic profits of steam injection boiler is provided, and valued opinions are given。And then,this paper establishes energy transition and analysis model according to the characteristic of system and each part, provide the criterion of assessment, and utilize the test data to analyze and calculate. energy of the system and each part is assessed and analyzed, weak links and equipments are found out and the reason of producing is analyzed .At last, the operation thermal efficiency of steam injection boiler is improved by falled exhaust smoke temperature and reduced air coefficient (oxygen content). Shown in the theory analysis, test, design, actual modification operating and the benefit of energy conservation, it has reached the anticipated results. This research results pointing out the direction for the follow-up study and have directive significance to the similar conditions.