H_2S在多层聚合物复合管材中的渗透规律  

The permeation law of hydrogen sulfide in multilayer polymer composite oil/gas pipes

作　　者：戚东涛 任建红[2] 李厚补 任鹏刚[3] 张华[3] 

机构地区：[1]中国石油集团石油管工程技术研究院石油管工程重点实验室 [2]中国石化石油勘探开发研究院 [3]西安理工大学

出　　处：《天然气工业》2014年第5期126-130,共5页Natural Gas Industry

基　　金：国家高技术研究发展计划(863计划)项目(编号:2013AA09A218);国家自然科学基金(编号:51304236)

摘　　要：为了探索实际传输过程中H2S在非金属管材中的渗透规律,以不同温度条件下H2S在多层聚合物复合管道中的渗透系数实测值为基准,建立了H2S在多层聚合物复合管道中的渗透模型,并利用渗透理论和渗透公式获得了不同温度、压力条件下H2S在非金属管道增强层中产生的气压和渗透量随时间变化的规律。结果发现:①H2S在聚偏氟乙烯(PVDF)和高密度聚乙烯(HDPE)薄膜中的渗透规律符合Arrhenius关系;②H2S在管道中的渗透气压随温度和管内压力升高而急剧升高,且很快达到平衡,而其渗透量呈一次函数持续增加;③H2S通过内衬层管材的渗透量随温度和管内压力的增大而线性增大,但前者对H2S渗透行为的影响大于后者引起的影响。To explore the permeation mechanism of acid gas in nonmetallic pipes under actual transportation conditions, the permea- bility of hydrogen sulfide （H2S） gas in Polyvinylidene Fluoride （PVDF） and high-density polyethylene （HDPE） membranes was measured at different temperatures. It was found that the permeation of Ha S gas in PVDF and HDPE membranes completely accords with the Arrhenius model. Additionally, the influences of temperature and internal pressure on the permeation behavior of H2 S in ac tual nonmetallic pipelines were also investigated on the basis of the theory module. The results showed that pressure in the armor layer caused by H2 S gas permeation significantly increases with the temperature or internal pressure elevating at the early stage, but then will quickly reach its unchanging equilibrium. Additionally, the cumulative permeation amount of H2S gas in the armor layer will increase with the rising temperature and internal pressure, the former of which has a bigger impact.

关 键 词：多层聚合物复合管 H2S 气体渗透性 温度 压力 聚偏氟乙烯 高密度聚乙烯 

分 类 号：TE973[石油与天然气工程—石油机械设备]