水合物浆在管道中的流动安全  

Flow assurance of hydrate slurry in pipeline

作　　者：王武昌[1,3,4] 樊栓狮[2] 梁德青[1,4] 杨向阳[1,4] 

机构地区：[1]中国科学院广州能源研究所,广州天然气水合物中心,广东广州510640 [2]华南理工大学传热强化与过程节能教育部重点实验室,广东广州510640 [3]中国科学院研究生院,北京100039 [4]中国科学院可再生能源与天然气水合物重点实验室,广东广州510640

出　　处：《化工学报》2008年第6期1545-1550,共6页CIESC Journal

基　　金：国家自然科学基金项目(90410003);国家高技术研究发展计划项目(2006AA05Z204)~~

摘　　要：The flow assurance problem of pipelines in offshore production is becoming more and more serious because oil fields in more and more unusual environments have been brought in production.HCFC-141b and THF were selected as the substitutes to study the flow behavior and mechanism of hydrate blockage in pipelines on the newly built flow loop,which was a two pass loop consisting of a 42 mm diameter stainless pipe,30 m long.Slurry-like hydrates and slush-like hydrates were observed with the formation of hydrates in pipeline.There are critical hydrate volume concentrations of 37.5% for HCFC-141b hydrate slurry and 50.6% for THF hydrate slurry respectively.The pipeline would be free of hydrate blockage when the hydrate volume concentration was lower than the critical volume concentration; while otherwise the pipeline would be easily blocked.A safe region,which is defined according the critical hydrate volume concentrations,is firstly proposed for hydrate slurry,and it can be used to judge if the pipeline can be run safely or not.The flow assurance problem of pipelines in offshore production is becoming more and more serious because oil fields in more and more unusual environments have been brought in production.HCFC-141b and THF were selected as the substitutes to study the flow behavior and mechanism of hydrate blockage in pipelines on the newly built flow loop,which was a two pass loop consisting of a 42 mm diameter stainless pipe,30 m long.Slurry-like hydrates and slush-like hydrates were observed with the formation of hydrates in pipeline.There are critical hydrate volume concentrations of 37.5% for HCFC-141b hydrate slurry and 50.6% for THF hydrate slurry respectively.The pipeline would be free of hydrate blockage when the hydrate volume concentration was lower than the critical volume concentration; while otherwise the pipeline would be easily blocked.A safe region,which is defined according the critical hydrate volume concentrations,is firstly proposed for hydrate slurry,and it can be used to judge if the pipeline can be run safely or not.

关 键 词：水合物浆 流动特性 压降 安全流动 

分 类 号：TQ022.4[化学工程]