Novel Zeolite-Polymer-Ceramic Composite Membranes for Volatile Organic Compound Removal by Vapor Permeation

通过蒸汽渗透去除挥发性有机化合物的新型沸石-聚合物-陶瓷复合膜

• 批准号: 9461628
• 负责人: Richard Higgins
• 金额: $ 7.5万
• 依托单位: CeraMem Corporation
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1995
• 资助国家: 美国
• 起止时间: 1995-06-01 至 1996-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9461628&HistoricalAwards=false
• 关键词: Novel; Zeolite; Polymer; Ceramic; Composite

DMI-9461628 Higgins Vapor permeation holds much promise for becoming a highly efficient means of preventing VOC emissions that are now generated by a variety of stationary resources. Limitations of current vapor permeation (VP) processes are low selectivity and low upper temperature constraints (ca. 100 to 125 degrees centigrade) for polymeric VP membranes. In most cases, these result in the need to employ large membrane areas, multi-stage operation and the cooling of compressed air feed. Wider application of the technology would be possible if inexpensive VP modules with highly selective membranes operable at appreciably higher temperature were available. This research addresses development of such devices by use of novel zeolite-filled polymeric membranes in combination with low-cost, highly compact ceramic ultrfiltration modules as VP membrane supports. In this Phase I program, novel zeolite-filled membranes will be developed. Highselectivity of these membranes for removal of priority AVOC's from air will be demonstrated. an innovative method will be used to apply then, defect-free vapor permeation membranes tot he ceramic supports to from zeolite-polymer-ceramic composite membranes. These vapor permeation membranes will be tested at temperatures ranging from 100 to 200 degrees centigrade for removal of VOCs I synthetic gas streams at a laboratory scale. The sorption and diffusion properties of both pure zeolite and zeolite-filled membranes will be determined. In Phase II work, membrane fabrication procedure would be optimized to prepare very then membranes, larger size VP modules would be produced, and operation up to 300 degrees centigrade would be demonstrated.

DMI-9461628 Higgins 蒸气渗透有望成为防止目前由各种固定资源产生的 VOC 排放的高效方法。 目前的蒸气渗透 (VP) 工艺的局限性在于聚合物 VP 膜的选择性较低且上限温度较低（约 100 至 125 摄氏度）。 在大多数情况下，这些导致需要采用大的膜面积、多级操作和压缩空气供给的冷却。 如果可以使用具有可在相当高的温度下运行的高选择性膜的廉价 VP 模块，则该技术的更广泛应用将是可能的。 这项研究通过使用新型沸石填充聚合物膜与作为 VP 膜支撑的低成本、高度紧凑的陶瓷超滤模块相结合来开发此类设备。 在该第一阶段计划中，将开发新型沸石填充膜。将展示这些膜在去除空气中优先 AVOC 方面的高选择性。 然后，将使用一种创新方法将无缺陷的蒸气渗透膜应用到陶瓷载体上，形成沸石-聚合物-陶瓷复合膜。 这些蒸气渗透膜将在 100 至 200 摄氏度的温度下进行测试，以在实验室规模下去除合成气流中的 VOC。 将测定纯沸石和沸石填充膜的吸附和扩散特性。 在第二阶段工作中，将优化膜制造程序以制备随后的膜，将生产更大尺寸的VP模块，并将演示高达300摄氏度的操作。