纳米陶瓷膜上气体扩散特性的研究

Priscilla Ogunlude, Ofasa Abunumah, E. Gobina
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引用次数: 2

摘要

使用膜进行气体升级越来越受到人们的关注,因为它显示出有效和有效的气体净化和绿色能源途径的巨大潜力。温室气体排放到大气中对经济产生不利影响,全球变暖导致许多自然灾害,热浪,粮食短缺,生命和财产损失。为了解决这个问题,捕获和利用温室气体的研究正在进行中。在本文中,研究了沼气成分(甲烷和二氧化碳)通过膜扩散的研究,以利用其作为解决这一挑战的解决方案。该研究涉及使用不同孔径的膜(15,200和6000nm)来确定不同操作条件下气体的流动特性和状态。进行了单气体渗透试验,结果表明气体的流动取决于气体组分的分子量、运动直径和粘度等因素。结果表明,压力对膜内气体流动的影响大于温度,其中孔径对膜内气体流动的影响最大。甲烷通过膜的通量大于二氧化碳在常规孔隙几何形状下的通量,并且描绘了更大的沼气升级潜力。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
A Study of Gas Diffusion Characteristics on Nano-Structured Ceramic Membranes
Abstract The use of membranes for gas upgrading has increasingly become of interest as it has shown great potential for efficient and affective gas purification and a pathway to green energy. The emission of greenhouse gases to the atmosphere has detrimental effects on the economy in terms of global warming which has led to many natural disasters, heat waves, food shortage, loss of life and property. To combat this, studies of capturing and utilizing greenhouse gases are ongoing. In this paper, the study of biogas components (methane and carbon dioxide) diffusion through membranes are studied to employ its use as a solution for the challenge. The study involved the use of membranes of different pore sizes (15, 200 and 6000nm) to ascertain the flow characteristics and regime of the gases under different operating conditions. Single gas permeation tests were conducted, and the results show the flow of gases is dependent on factors including molecular weight, kinematic diameter and viscosity of the gas components. It was observed that pressure has a greater influence on the gas flow through membranes compared to temperature with the effect of pore size having the greatest impact. The flux of methane through the membrane is greater than that of carbon dioxide in regular pore geometry and depicts a greater potential for upgrading of biogas.
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