天然气与石油2017，Vol.35Issue(5)：45-50,6.DOI:10.3969/j.issn.1006-5539.2017.05.009
液态乙烷管道相变工况低温特性探讨
The Study of Low Temperature Characteristics of Liquid Ethane Pipeline Under Phase Change Condition
摘要
Abstract
Due to the high content of light hydrocarbon components for the liquid ethane pipeline, the physical characteristic of medium is lively. Although the single-phase transportation can be ensured under the current design standard, the phase change is likely to occur under special conditions, resulting in lower temperature. Thus, it is worth of the attention of pipeline low-temperature design. Based on the liquid ethane pipeline process design method and the physical characteristic of liquid ethane, the causes of the low temperature conditions of liquid ethane pipeline are discussed. The commercial software suitable for multiphase analysis is selected to simulate a liquid ethane pipeline low temperature problem under special phase change condition. The results show that the temperature of the typical liquid ethane products will decrease to - 77 ℃ after adiabatic expansion to normal pressure. The conventional liquid pipeline simulation software cannot perform the simulation for the low temperature caused by the phase change. The water hammer has the characteristics of rapid pressure depression. Downstream of the water hammer point is the main area of the ethane pipeline low temperature occurrence; slowing down the water hammer momentum and appropriately improving the operating pressure are helpful to mitigate the low temperature issue of ethane pipeline. The research results of this paper can provide reference for the design of liquid ethane pipeline.关键词
液态乙烷/低温/管道/水击Key words
Liquid ethane/Low temperature/Pipeline/Water hammer引用本文复制引用
陈俊文,郭艳林,鲁国文,任蓉..液态乙烷管道相变工况低温特性探讨[J].天然气与石油,2017,35(5):45-50,6.基金项目
塔里木油田天然气乙烷回收工程 ( S 2017-112 C) （ S 2017-112 C）
