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[1]曹学文　王迪　杨文.甲烷 - 乙烷超声速流动液化过程的数值模拟[J].油气储运,2016,35(预出版):1-6.
　CAO Xuewen,WANG Di,YANG Wen.Numerical simulation on methane-ethane supersonic flow liquefaction process[J].Oil & Gas Storage and Transportation,2016,35(预出版):1-6.
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甲烷 - 乙烷超声速流动液化过程的数值模拟

《油气储运》[ISSN:1000-8241/CN:13-1093/TE] 卷: 35 期数: 2016年预出版期 页码: 1-6 栏目: 出版日期: 2060-12-31
Title:
Numerical simulation on methane-ethane supersonic flow liquefaction process
作者:
曹学文　王迪　杨文
Author(s):
CAO Xuewen;  WANG Di;  YANG Wen
关键词:
天然气;  甲烷-乙烷双组分; 超声速; 旋流分离器;  Laval 喷管; 液化
Keywords:
natural gas;  methane-ethane bicomponent;  supersonic;  swirling separator;  Laval nozzle;  liquefaction
分类号:
TE89
文献标志码:
A
摘要:

为推广超声速旋流分离技术在天然气液化领域的应用， 对甲烷-乙烷双组分在 Laval 喷管中超声速流动液化过程进行了理论研究与数值模拟。运用流体力学计算软件 Fluent， 结合流动控制方程， 分析了入口温度、 入口压力、 背压及组分对双组分液化过程的影响。研究结果表明：适当降低入口温度或提高入口压力， 将使甲烷-乙烷双组分临界液化温度和压力降低， 且停留在气液两相区和液相区的范围增大， 促进双组分的液化；当温度升高至 330 K 时， 双组分处于液化的临界状态， 但继续升高温度， 将不能发生液化；背压升高至 20％将会导致喷管内产生激波， 激波的出现使得喷管内的温度、 压力突变， 破坏了稳定的液化环境， 不利于液化过程的顺利进行；甲烷含量越高， 发生液化时所需温度和压力越低， 液化区域范围越小， 越难发生液化。

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更新日期/Last Update: 2016-06-21