首页> 外国专利> MEMBRANES IN THE FORM OF HOLLOW FIBERS FOR THE SEPARATION OF CO2 FROM NATURAL GAS AND METHOD OF PREPARATION BY HEAT TREATMENT AND DEVELOPMENT OF A POLYMERIC MEMBRANE PRECURSOR

MEMBRANES IN THE FORM OF HOLLOW FIBERS FOR THE SEPARATION OF CO2 FROM NATURAL GAS AND METHOD OF PREPARATION BY HEAT TREATMENT AND DEVELOPMENT OF A POLYMERIC MEMBRANE PRECURSOR

机译:中空纤维形式的膜用于将CO2与天然气和制备方法分离,通过热处理和开发聚合物膜前体

摘要

The present invention deals with a method for obtaining membranes in the form of hollow fibers with application in the field of carbon dioxide removal from natural gas. The aforementioned membranes are obtained by means of heat treatment of polymeric membranes. In this method, polymeric membranes are obtained by a phase-inversion technique by immersion-precipitation and are subsequently subjected to a heat treatment, that is, that the membranes effectively become precursor membranes of the heat treatment. The heat treatment process involves the optimization of the heating rate, temperature, and stabilization time variables, aiming at the improvement of the transport properties of the polymeric membranes. After the heat treatment, it becomes possible to use the membranes in separation processes of gases which operate at pressures greater than 30 bar, with selectivity for carbon dioxide (CO2).
机译:本发明涉及一种以中空纤维形式获得膜的方法,其应用于从天然气的二氧化碳去除领域。通过聚合物膜的热处理获得上述膜。在该方法中,通过浸渍沉淀通过相反转技术获得的聚合物膜,随后进行热处理,即膜有效地成为热处理的前体膜。热处理过程涉及优化加热速率,温度和稳定时间变量,旨在改善聚合物膜的运输性质。在热处理之后,可以使用在大于30巴的压力下运行的气体的分离过程中的膜,具有二氧化碳的选择性(CO 2 )。

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