Gas and vapor separation process using surface-soaked liquid membrane

使用表面浸泡液膜的气体和蒸汽分离工艺

• 批准号: 17560659
• 负责人: ITO Akira
• 金额: $ 2.18万
• 依托单位: Niigata University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2005
• 资助国家: 日本
• 起止时间: 2005 至 2006
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-17560659/
• 关键词: liquid membrane; carbon dioxide; VOC; gas separation; microporous membrane; グリコール; 除湿; 膜分離

The surface-soaked liquid membrane was applied to separation processes of carbon dioxide and VOC vapors from air. The base material was a hydrophobic microporous membrane, Durapel membrane, Millipore, which surface was treated by a corona irradiation technique. The treated membrane had 54 mN/m surface tension in the top surface, while it had 21 mN/m surface tension in the bottom surface. This anisotropic structure on surface property of the microporous membrane enabled liquid membrane structure in one membrane. The surface-soaked liquid membrane was able to apply to a vacuum mode gas and vapor permeation. A flat type membrane module of 30cm x 30cm was developed for gas and vapor separation applications. Main application of the surface-soaked liquid membrane in this study was carbon dioxide separation. The liquid membrane with diglycolamine liquid proved having over 20 separation factor for carbon dioxide/nitrogen mixture and carbon dioxide/methane mixture. The amine liquid membrane was applied to a carbon dioxide enriched air feed process. The equipment with the liquid membrane module and a vacuum. pump could feed carbon dioxide enriched air of over 2000ppm. An analytical model of the process with permeability was developed for process design. This carbon dioxide enriched air feed process will be applied to a green house with artificial illumination. The liquid membrane process with triethylene glycol liquid was also applied to a removing process of VOC vapor from air. The membrane module was effectively removed ethanol, methanol, benzene vapors from air. The separation factor for VOC vapor over air was over 1000 for the triethylene glycol liquid membrane. The application of liquid membrane process to VOC reduction will be also promising.

将表面浸泡的液体膜应用于二氧化碳和空气中VOC蒸气的分离过程。基本材料是一种疏水微孔膜，杜拉佩尔膜，米利波尔，表面通过电晕照射技术处理。处理后的膜在顶部表面有54 mn/m的表面张力，而底部表面的表面张力为21 mn/m。这种各向异性结构在微孔膜的表面特性上实现了一个膜中的液体膜结构。表面浸泡的液体膜能够应用于真空模式气体和蒸气渗透。为气体和蒸气分离应用开发了30厘米x 30厘米的平坦膜模块。在这项研究中，表面浸泡的液体膜的主要应用是二氧化碳分离。二氧化碳/氮混合物和二氧化碳/甲烷混合物的液体膜液态液体具有超过20个分离因子。将胺液膜应用于富含二氧化碳的空气进料过程中。带有液体膜模块和真空的设备。泵可以为超过2000ppm的二氧化碳富含碳。为过程设计开发了具有渗透率的过程的分析模型。这种富含二氧化碳的空气进料过程将应用于具有人工照明的温室。带有三乙二醇液体的液体膜过程也应用于空气中的VOC蒸气的去除过程。从空气中有效去除膜模块，从空气中除去乙醇，甲醇，苯蒸气。对于三乙二醇液体膜，空气上VOC蒸气的分离因子超过1000。将液体膜过程应用于VOC减少的应用也将是有希望的。

项目成果

Air-Sweep Vacuum Membrane Distillation Using Fine Silicone Rubber Hollow-Fiber Membranes

采用精细硅橡胶中空纤维膜的气扫真空膜蒸馏

• 发表时间: 2006
• 期刊: Desalination 191
• 作者: Jingli Xu;Michio Furusawa;Akira Ito
• 通讯作者: Akira Ito