Development of gas (vapor) separation hollow fibers based on green technology approach and new 3D woven design of membrane modules

基于绿色技术方法和新型膜组件3D编织设计的气体（蒸汽）分离中空纤维的开发

• 批准号: 405568247
• 负责人: Professor Dr.-Ing. Thomas Gries
• 金额: --
• 依托单位: Institut für Textiltechnik (ITA)
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2019
• 资助国家: 德国
• 起止时间: 2018-12-31 至 2021-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/405568247?language=en
• 关键词: Development; gas; vapor; separation; hollow

There is need for the creation of targeted membranes designed for current problems. It is required to have an integrated membrane system for filtration and gas separation. Despite the active study of hundreds of polymers as potential membrane material only a few materials are commercialized. The strict selection of polymers for membranes does not only depend on the membrane properties, but also on rheological, mechanical and chemical properties and economically reasonable availability of the polymer. PMP takes special place in a number of polymers as it meets the above noted requirements. Traditional manufacturing process of asymmetric hollow fibers (HF) based on PMP requires the use of harmful solvents and precipitants. The Project assumes the application of the melt-spinning technology for the PMP membrane production. Further, the published data on the parameters of gas permeability for PMP is limited. In recent years interest in PMP as a membrane material is intensified. The effect of permeable crystalline phase on the gas separation properties of PMP is systematically investigated in the framework of the grant RFBR No.15-03-03033. The theoretical and experimental analysis of PMP is aimed to determine the influence of the crystalline phase on the gas separation properties.The project aims at the development of innovative PMP HF with thin selective layer via a solvent free melt-spinning process. For this purpose, the theoretical principles of the transport theory of gases and vapors in semi-crystalline HF with different orientation of the crystallites over the thickness of the selective layer have to be developed. The production of the HF is done using a two-stage process. At first an oriented yarn will be produced via melt spinning process. The second process step includes annealing, drawing and crazing of the HF. Therefore, a detailed examination of the crazing in the immersion bath is necessary. Of particular interest are the effects of crazing on the structure and permeability of the PMP HF. This in turn requires the development of measurement methods for measuring the permeability of gases (H2, O2, N2, CO2, CH4), low molecular hydrocarbons and vapors in the individual HF and HF bundles obtained from a partially crystalline PMP. In addition, the development of 3D membranes is examined by weaving. The development of 3D membranes provides a new range of easily scalable membrane devices of almost any shape demanded. TIPS RAS will focus on the characterization of the membrane properties and will define the framework of the melt spun PMP HFs and the 3D Membrane structure. The ITA will design the manufacturing process taking into account the requirements placed on the fibers and the necessary textile structure of the 3D membranes. This includes the process development of melt spinning process for PMP HF, the design and process development of the crazing process. The 3D weaving process is adapted by ITA to enable production of 3D HF membranes.

有必要针对当前的问题设计目标膜。需要有一个集成的膜系统进行过滤和气体分离。尽管人们积极研究了数百种聚合物作为潜在的膜材料，但只有少数材料被商业化。膜用聚合物的严格选择不仅取决于膜的性能，还取决于聚合物的流变学、机械和化学性能以及经济上合理的可用性。PMP在许多聚合物中占有特殊的地位，因为它满足上述要求。传统的基于PMP的不对称中空纤维（HF）制造工艺需要使用有害溶剂和沉淀剂。本项目设想熔融纺丝技术在PMP膜生产中的应用。此外，已发表的关于PMP气体渗透性参数的数据有限。近年来，人们对PMP作为膜材料的兴趣日益浓厚。在RFBR No.15-03-03033框架下，系统研究了渗透晶相对PMP气体分离性能的影响。PMP的理论和实验分析旨在确定晶体相对气体分离性能的影响。该项目旨在通过无溶剂熔融纺丝工艺开发具有薄选择层的创新型PMP HF。为此，必须建立半晶HF中不同取向的气体和蒸汽在选择层厚度上的输运理论原理。HF的生产采用两阶段工艺。首先采用熔融纺丝工艺生产取向纱。第二道工序包括HF的退火、拉丝和镀铬。因此，有必要对浸没浴中的裂纹进行详细检查。特别令人感兴趣的是裂纹对PMP HF的结构和渗透率的影响。这反过来又需要开发测量方法，以测量从部分结晶PMP中获得的单个HF和HF束中的气体（H2, O2, N2, CO2, CH4），低分子碳氢化合物和蒸汽的渗透率。此外，三维膜的发展是通过编织检查。3D膜的发展提供了一系列易于扩展的新膜装置，几乎可以满足任何形状的要求。TIPS RAS将侧重于膜性能的表征，并将定义熔融纺PMP HFs的框架和3D膜结构。ITA将考虑到对纤维的要求和3D膜的必要纺织结构来设计制造过程。其中包括PMP HF熔体纺丝工艺的开发，加胶工艺的设计和工艺开发。ITA采用3D编织工艺来生产3D HF膜。