本文選題：加熱爐 + 爐管�。� 參考：《東北石油大學(xué)》2017年碩士論文

【摘要】：在石油石化行業(yè),加熱爐是一種廣泛應(yīng)用于油田集輸過程中的加熱設(shè)備。真空加熱爐因其成本低、效率較高、自動化程度高等優(yōu)點被油田現(xiàn)場廣泛使用。經(jīng)過多年的發(fā)展,真空加熱爐無論在設(shè)計方面還是在應(yīng)用方面都逐漸提升,與此同時,針對真空加熱爐各部件的研究工作也不斷開展,爐管作為真空加熱爐的重要換熱元件,在運行過程中易結(jié)垢而影響真空加熱爐的整體換熱效率,本文即以真空加熱爐結(jié)垢爐管為研究對象開展相關(guān)的數(shù)值模擬計算工作。由于換熱介質(zhì)中含有雜質(zhì),會導(dǎo)致爐管管壁結(jié)垢,進而導(dǎo)致管壁的換熱熱阻增大,使得整個加熱爐換熱性能下降。本文為了較合理地分析加熱爐爐管結(jié)垢對加熱爐力學(xué)特性的影響,以耦合傳熱理論為依據(jù),綜合應(yīng)用有限元分析軟件,考慮流、固、熱三場的綜合作用,建立了直段、彎段及多根結(jié)垢前、后的爐管力學(xué)模型,對不同結(jié)垢厚度、不同結(jié)垢面積、不同進口流速和不同爐管材料的真空加熱爐結(jié)垢爐管進行多場耦合數(shù)值模擬分析,分析結(jié)果表明隨著垢體厚度、結(jié)垢面積和介質(zhì)流速的增加,盤管換熱面的表面換熱系數(shù)降低,爐管換熱性能下降,但當結(jié)垢厚度、結(jié)垢面積和介質(zhì)進口流速達到一定值后影響變小,同時,管壁的材料對換熱量也有影響。本研究成果能夠較科學(xué)地描述結(jié)垢爐管的力學(xué)特性,為真空加熱爐的合理使用和換熱效果預(yù)測提供一種方法,本研究方法也適用于石油石化行業(yè)的其他設(shè)備。
[Abstract]:In petroleum and petrochemical industry, reheating furnace is a kind of heating equipment which is widely used in oil field gathering and transportation process. Vacuum heating furnace is widely used in oil field because of its low cost, high efficiency and high degree of automation. After years of development, the design and application of vacuum heating furnace have been gradually improved. At the same time, the research work on the parts of vacuum heating furnace has been carried out constantly, and the furnace tube is an important heat exchanger element of vacuum heating furnace. The integral heat transfer efficiency of the vacuum heating furnace is affected by the easy scaling during operation. In this paper, the scaling tube of the vacuum heating furnace is taken as the research object to carry out the relevant numerical simulation and calculation work. Because of the impurity in the heat transfer medium, the heat transfer resistance of the tube wall increases and the heat transfer performance of the whole furnace decreases. In order to analyze reasonably the influence of fouling on the mechanical properties of reheating furnace, based on the coupled heat transfer theory and the application of finite element analysis software, the straight section is established by considering the comprehensive action of flow, solid and heat fields. The mechanical model of the furnace tube before and after the bending section and multiple fouling is analyzed by multi-field coupled numerical simulation for different scaling thickness, different scaling area, different inlet velocity and different tube material. The results show that with the increase of the thickness of scale body, the area of scaling and the flow rate of medium, the surface heat transfer coefficient of coil tube decreases and the heat transfer performance of furnace tube decreases. The influence of the scaling area and the inlet velocity of the medium becomes smaller, and the material of the pipe wall also has an effect on the heat transfer. The results of this study can scientifically describe the mechanical characteristics of scaling furnace tube and provide a method for the rational use of vacuum heating furnace and prediction of heat transfer effect. The research method is also suitable for other equipment in petroleum and petrochemical industry.
【學(xué)位授予單位】：東北石油大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：TE974.2

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本文編號：2015536