Carbon-Ceramic Composite Membranes for High-Temperature Gas Separation

用于高温气体分离的碳陶瓷复合膜

• 批准号: 8861398
• 负责人: Vinod Jalan
• 金额: $ 5万
• 依托单位: ELECTROCHEM, INC.
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1989
• 资助国家: 美国
• 起止时间: 1989-01-01 至 1989-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8861398&HistoricalAwards=false
• 关键词: Carbon; Ceramic; Composite; Membranes; Temperature

This project will develop an innovative, effective, and economic process for high temperature, high pressure gas cleanup. This will promote the cost effective utilization of domestic coal reserves. This objective will be achieved by the development of a novel carbon molecular sieve-ceramic composite membrane. The unique chemical and physical properties of carbon molecular sieves formed interstitially in a macroporous ceramic support offers the potential of facile incorporation into existing ceramic membrane-based particulate removal systems to provide relatively clean, concentrated hydrogen from hot coal gas. Membrane separations for gaseous mixtures have become wide spread since the development of asymmetric polymer membranes over the last three decades. This is because of the relatively low operating costs for a membrane-based gas separation process. Utilization has been limited to low temperature systems, however, because of the lack of membrane systems capable of withstanding high temperatures. A number of ceramic membranes, capable of withstanding high temperatures, have been developed in the last few years, but they are not suitable for gas separations because the channels they contain are too large to separate gas molecules. In this project an organized carbon structure will be formed inside of the channels of one of the commercially successful ceramic membranes. The deposited carbon will act like a sieve to selectively pass hydrogen molecules while rejecting larger molecules. The process for making these membranes promises to be inexpensive. One of the many possible applications of such a membrane is the conversion of coal to gaseous fuels in a manner which would allow an economical separation of sulfur compounds from the final product.

该项目将开发一种创新的，有效的，经济的 用于高温高压气体净化的方法。 这将 促进国内煤炭储量的成本效益利用。 这一目标将通过开发一种新的碳 分子筛-陶瓷复合膜 独特的化学和 合成碳分子筛的物理性质 在大孔陶瓷载体中提供了容易的 结合到现有陶瓷膜基微粒去除中 系统提供相对清洁，浓缩氢从热 煤气。 气体混合物的膜分离已得到广泛应用 由于不对称聚合物膜的发展， 三十年了 这是因为相对较低的运营成本 用于基于膜的气体分离过程。 利用率已 然而，由于缺乏 膜系统能够承受高温。 一些 陶瓷膜，能够承受高温， 过去几年已经开发出来，但它们不适合 气体分离，因为它们包含的通道太大， 分离气体分子。 在这个项目中， 将 形成在一个商业化的 成功的陶瓷膜。 沉积的碳会像 一种能选择性地通过氢分子同时 更大的分子 制造这些膜的过程 承诺是廉价的。 众多可能性之一 这种膜的应用是将煤转化为 气体燃料的方式，这将允许经济 从最终产品中分离硫化合物。