基于宽相变分区的含蜡原油三管伴热系统停输传热特性分析  

Analysis of Heat Transfer Characteristics of Three-pipe Heating System for Waxy Crude Oil Based on Wide Phase Change Partition

作　　者：徐颖[1] 王慧军 刘晓燕[1] 刘立君[1] 成庆林 XU Ying;WANG Hui-jun;LIU Xiao-yan;LIU Li-jun;CHENG Qing-lin(School of Civil Engineering and Architecture,Northeast Petroleum University,Daqing 163318,China)

机构地区：[1]东北石油大学土木建筑工程学院,大庆163318

出　　处：《当代化工》2021年第10期2479-2483,共5页Contemporary Chemical Industry

基　　金：国家自然科学基金重点项目(项目编号:52076036);黑龙江省自然科学基金项目(项目编号:LH2020E017)。

摘　　要：采用含蜡原油宽相界面法,建立了大气、土壤、伴热介质及管道原油多场耦合作用下的埋地三管伴热系统停输二维非稳态传热模型,根据主管道内原油相态变化特点,分区开展原油相变传热描述。利用有限容积法开展三管伴热系统下原油相变传热数值模拟,研究了伴热工况下原油及伴热介质平均温降规律、原油温度场变化规律及凝油层演化过程,进一步分析了有无伴热工况对安全停输时间的影响。A two-dimensional unsteady heat transfer model of buried three-pipe heat tracing system under multi field coupling effects of atmosphere, soil, heat tracing medium and pipeline crude oil was established by using wide phase interface method for waxy crude oil. According to the phase change characteristics of crude oil in the main pipeline,phase change heat transfer of crude oil was described in different zones. The finite volume method was used to simulate the phase change heat transfer of crude oil in a three-pipe heat tracing system. The average temperature drop law, the change law of temperature field, and the evolution process of condensate reservoir were studied under the tracing condition. The influence of the tracing condition on the safe shutdown time was further analyzed.

关 键 词：宽相界面法 三管伴热系统 停输过程 数值模拟 

分 类 号：TE832[石油与天然气工程—油气储运工程]