冷热油交替顺序输送过程热力问题的研究  

The Research of Heat Transfer Problem in Process of Batch Transportation of Cool and Hot OiI

作　　者：崔秀国[1] 张劲军[1] 

机构地区：[1]石油大学(北京)

出　　处：《油气储运》2004年第11期15-19,共5页Oil & Gas Storage and Transportation

基　　金：石油科技中青年创新基金项目(03E709)

摘　　要：建立了描述冷热油交替输送过程中非稳态水力、热力问题的数学模型 ,开发了计算软件 ,并对铁秦管道交替输送俄罗斯原油与大庆原油过程中的热力状况进行了模拟计算。结果表明 ,在冷热油交替输送过程中 ,当循环达到一定次数后 ,进站油温将呈现周期性的变化。原油的热物性参数与管道及周围环境参数对计算结果有显著影响 ,需准确选取。当冷油 (进口原油 )前行、热油(国产原油 )后行时 ,热油油头的温降幅度最大 ,控制各循环中热油油头的进站温度 ,是确保冷热原油顺序输送安全性的关键。To guarantee the quality of refined products,different kinds of oil should be transported and stored respectively. Batch transportation is an ideal means of pipelining imported oil and domestic oil. Now it is a common practice to pipeline domestic waxy oil by means of heating. But for the imported oil with the good flowability,it can usually be pipelined at ambient temperature. Therefore pipelining imported and domestic oil is a problem of batch transportation of cool and hot oil. A mathematic model for solving this transient thermal and hydrodynamic problem in the process of batch transportation of cool and hot oil is established, and a calculation software is also developed. As an example, the process of batch transportation of Russian oil and Daqing oil in TieQin Pipeline is simulated by the calculation software. The calculation results show that during batch transportation of cool oil and hot oil,the oil temperature at the entrance of the next station has the periodical change trend after the number of transportation circle reaches a special value. The parameters of oil thermophysical properties, pipeline and environment have significant effects on calculation results,so these parameters should be chosen carefully. When hot oil follows cool oil in process of batch transportation,the temperature drops fastest. Therefore, the key to ensuring batch transportation safety is to control hot oil temperature at entrance of the next station in transportation circulations.

关 键 词：顺序输送 俄罗斯原油 温降 进口原油 输送过程 管道 热力 降幅 问题 最大 

分 类 号：TE832.35[石油与天然气工程—油气储运工程]