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希金斯蒸气渗透技术有望成为一种高效的方法，防止挥发性有机化合物的排放，这些排放现在是由各种固定资源产生的。目前的蒸汽渗透(VP)工艺的局限性是聚合物VP膜的低选择性和较低的上限温度(约100至125摄氏度)。在大多数情况下，这导致需要使用大的膜面积、多阶段操作和压缩空气进料的冷却。如果廉价的VP组件具有可在较高温度下操作的高选择性膜，则该技术将有可能得到更广泛的应用。这项研究旨在通过使用新型沸石填充聚合物膜和低成本、高度紧凑的陶瓷超滤模块作为VP膜支撑体来开发此类设备。在这个第一阶段计划中，将开发新型的沸石填充膜。将展示这些膜对空气中优先脱除AVOC的高选择性。然后，将使用一种创新的方法将无缺陷的蒸汽渗透膜应用到陶瓷载体上，形成沸石-聚合物-陶瓷复合膜。这些蒸汽渗透膜将在实验室规模的温度范围内进行100至200摄氏度的测试，以去除VOCs I合成气流。将测定纯沸石和沸石填充膜的吸附和扩散性能。在第二阶段的工作中，将优化膜制备程序，以制备比膜更大的膜，生产更大尺寸的VP组件，并演示高达300摄氏度的操作。