摘要
针对冷热油交替输送工艺中加热方案的确定问题,建立了冷热油交替输送管道的热力、水力计算模型,采用有限容积法和热力特征线法对非稳态热力、水力耦合问题进行了数值求解,参考国内某原油管道现场实测数据对程序进行了检验。通过模拟不同加热方案的原油进站温度随时间的变化,分析了加热方案的可行性;按对低凝原油加热时是全部加热还是油尾部分加热提出了2种加热控制方式,研究了采取不同加热控制方式时最低加热能耗的变化规律。结果表明:在取得最佳加热方式时,对低凝油油尾部分加热所消耗的燃料油比对低凝油整体加热的要少。
Cold and hot oils transported alternately in pipelines is a new technology in crude oil transportation,and the appropriate heating scheme to choose is one of the critical technologies.A model,based on the couple of unsteady thermodynamic and hydraulic characteristics to calculate the parameters of batch transportation of cold and hot oils is set up and solved with the finite volume method and the method of thermodynamic characteristic together.The software is developed and verified with the field data gained from one crude oil pipeline in China.Feasibilities of different heating schemes are analyzed by simulating the inlet temperature changing with time.Two different heating-control patterns,heating the low-freezing crude oil entirely or partly,are put forward.Regular variations of minimum heating consumption under two heating-control patterns are studied,and the minimum heating consumption under one heating-control pattern is compared with that under the other.The results show that the minimum consumption of heating oil in the partly heating low-freezing oil is less than that in the entirely heating low-freezing oil.
出处
《西南石油大学学报（自然科学版）》
CAS
CSCD
北大核心
2008年第2期158-162,共5页
Journal of Southwest Petroleum University(Science & Technology Edition)
基金
高等学校博士学科点专项科研基金资助(20050425006)
关键词
冷热油交替
顺序输送
进站温度确定
加热方案
能耗
cold and hot oils alternation
batch transportation
inlet temperature calculation
heating schemes
heating consumption
