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首页> 外文会议>Euromembrane Conference >Carbon dioxide separation from CO2/N2 and CO2/CH4 mixtures in dynamic flow system using supported ionic liquid membranes
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Carbon dioxide separation from CO2/N2 and CO2/CH4 mixtures in dynamic flow system using supported ionic liquid membranes

机译：使用负载离子液体膜的动态流动系统中的CO2 / N2和CO2 / CH4混合物中的二氧化碳分离

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Carbone dioxide separation from biogas is important process because CO2 reduces calorific value and it is corrosive in presents of water. Moreover, pipeline specifications for natural gas require a CO2 concentration below 3-4% and H2S below 4 ppm. Therefore, it has become necessary to develop more efficient processes for upgrading low-quality natural gas then those now available. Membrane separation processes have been shown to be very effective for natural gas processing. In last two decades supported liquid membranes (SLMs) were intensively investigated for CO2 separation. The SLM is a two phase system of porous support and liquid phase held in the membrane pores by capillary forces. Application of ionic liquids as a membrane phase in SLMs systems extends the range of temperature, area of application and lifetime of the system. Ionic liquids are composed of large organic cation and smaller organic or inorganic anion. Due to high asymmetry they stay liquid in a wide range of temperatures. They present unique chemical and physical properties enabling them for industrial applications. They present negligible vapor pressure, are non-flammable and solvate many of organic and inorganic species [1-2]. Moreover they can be tuned for specific usage by changing cation or anion structure.
机译：来自沼气的碳化碳分离是重要的过程，因为CO2降低了热值，并且在水的礼物中腐蚀性。此外，天然气的管道规格需要低于3-4％和低于4ppm的CO 2浓度。因此，有必要为现在可用的人开发更有效的流程来升级低质量的天然气。已经显示膜分离过程对天然气加工非常有效。在过去的二十二十年中，支持的液体膜（SLM）被强烈研究CO 2分离。 SLM是通过毛细管力在膜孔中保持的多孔支撑和液相的两相系统。将离子液体作为膜相的施加在SLMS系统中，延伸了系统的温度，应用面积和寿命范围。离子液体由大型有机阳离子和较小的有机或无机阴离子组成。由于高度不对称，它们在各种温度范围内保持液体。它们呈现独特的化学物理和物理性质，使其能够用于工业应用。它们呈现可忽略不计的蒸气压，是非易燃的，溶剂化有机和无机物种[1-2]。此外，它们可以通过改变阳离子或阴离子结构来调整特定用途。

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