化学工程2011，Vol.39Issue(7)：88-92,5.
高含硫天然气管道泄漏数值模拟
Numerical simulation of high suffur-contained natural gas pipeline leakage
李朝阳 1马贵阳1
作者信息
- 1. 辽宁石油化工大学石油天然气工程学院,辽宁抚顺113001
- 折叠
摘要
Abstract
Because of long-term internal and external corrosion to the high sulfur-contained natural gas pipeline, the leakage accidents often occur. In order to reduce the harm to people due to gas pipeline leakage accidents, the research on the diffusion of methane and hydrogen sulphide is becoming more and more important. Methane and hydrogen sulfide gas diffusion from overhead and underground pipelines was numerically simulated by using computational fluid dynamics (CFD) method and simulation software. The result shows that in the early stage of overhead pipeline leakage, the volume fraction isoline presents a symmetrical distributing jet, and no explosion danger after 60 s; H2S volume fraction on the ground is higher after 90 s, and no poisoning danger after 180 s. The leakage of buried pipeline gathers a lot of high concentration gas near the surrounding ground of leakage point in a short time, and the explosion range and poisoning range of which are lower than those of overhead pipeline, but the time of hazard to the surrounding ground lasts longer. This simulation provides the theoretical basis for natural gas pipeline maintenance and gas safety transportation as well as environmental protection.关键词
天然气管道/泄漏/数值模拟Key words
natural gas pipeline/ leakage/ numerical simulation分类
能源科技引用本文复制引用
李朝阳,马贵阳..高含硫天然气管道泄漏数值模拟[J].化学工程,2011,39(7):88-92,5.
