降低油田伴生气水露点与烃露点的膜分离技术  

MEMBRANE SEPARATION TECHNIQUES TO REDUCE WATER DEW POINT AND HYDROCAR- BON DEW POINT OF ASSOCIATED GAS IN OIL- FIELDS

作　　者：冯海东[1] 肖尤明[1] 徐烈[1] 朱云光 

机构地区：[1]上海交通大学机械与动力工程学院 [2]上海孚宝港务有限公司

出　　处：《天然气工业》2005年第7期123-125,共3页Natural Gas Industry

摘　　要：由于油田气含有较高的C3+和水分,在低环境温度下,其凝液易凝析,降低管道的输运能力;同时其水分易凝结,形成水合物,造成冰堵,还对管线和其他设备造成腐蚀。因此在油田气输送前,需要降低其烃露点与水露点。与传统的降低烃露点与水露点技术相比,膜气体分离技术具有投资少、低能耗、环境友好和结构紧凑等优点,正在得到广泛地应用。为此,总结了膜技术用于降低油田气水露点与烃露点的研究历史与现状;指出了可用于低压下从油田气中分离出轻烃和水分的两种无机膜分离技术:无形无机膜中的选择吸附Carbon膜(ASCM)和晶状无机膜中的选择吸附Zeolite膜;提出了这两种膜技术在从油田气中分离轻烃和水分的实验研究中,尚需对水分通过膜的渗透特性与选择结果,以及水分与轻烃通过膜的竞争吸附的结果等问题进行进一步研究,应用研究中应解决如何大幅降低膜的制造成本的问题。Associated gas has high content of C3+ and water vapor. Under low ambient temperature, C3+ and water vapor are easy to condense to reduce the transmission capacity of the pipeline, form hydrate causing ice plugging, and corrode the pipeline and other devices. So it is necessary to reduce the hydrocarbon dew point and water dew point. Comparing with the traditional techniques to reduce the hy drocarbon dew point and water dew point, the gas separating technique with membrane has the advantages of less investment, low energy consumption, friendship with environment, and compact structure etc., and is being applied widely. The article reviews the history and present status of study to reduce water dew point and hydrocarbon dew point of associated gas in oilfields. Two kinds of inorganic membrane separation techniques are proposed to separate light hydrocarbon and water from associated gas in oilfields under low pressure. They are the adsorption selective carbon membrane (ASCM) from invisible inorganic membranes and the adsorption selective zeolite membrane from crystal inorganic membranes. The further study should be conducted for the 2 kinds of inorganic membrane separation techniques on the permeable characteristics and the selective results of watervapor passing through the membrane, and the competitive adsorption results of water vapor and light hydrocarbon parsing through the membrane etc. It is the problem to solve in application study how to decrease the manufacturing cost of membranes.

关 键 词：露点 气水 无机膜分离技术 伴生 气体分离技术 Carbon 选择吸附 低环境温度 油田气 结构紧凑 环境友好 研究历史 实验研究 渗透特性 竞争吸附 制造成本 膜技术 水分 水合物 低能耗 轻烃 应用 过膜 凝液 输送 相比 晶状 

分 类 号：TE863[石油与天然气工程—油气储运工程]