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首页> 美国政府科技报告 >Development and testing of a ceria-zirconia toughened alumina prototype filter element made of reticulated ceramic foam coated with a ceramic membrane acting as barrier filter for fly ash.
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Development and testing of a ceria-zirconia toughened alumina prototype filter element made of reticulated ceramic foam coated with a ceramic membrane acting as barrier filter for fly ash.

机译：开发和测试氧化铈 - 氧化锆增韧氧化铝原型过滤器元件，由涂有陶瓷膜的网状陶瓷泡沫制成，用作飞灰的阻隔过滤器。

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The objective of this work was to fabricate subscale candle filters using a Ce-ZTA reticulated foam material. Specifically Selee fabricated 60mm diameter cylinders with one closed end and one flanged end. Selee Corporation developed a small pore size (5-10 (micro)m) filtration membrane which was applied to the reticulated foam surface to provide a barrier filter surface. The specific tasks to be performed were as follows: (Task 1) Filter Element Development--To fabricate subscale filter elements from zirconia toughened alumina using the reticulated foam manufacturing process. The filter elements were required to meet dimensional tolerances specified by an appropriate filter system supplier. The subscale filter elements were fabricated with integral flanges and end caps, that is, with no glued joints. (Task 2) Membrane Development--To develop a small pore filtration membrane that is to be applied to the reticulated foam material. This membrane was to provide filtration characteristics that meet gas turbine requirements and pressure drop or permeability requirements specified by the filter system supplier. (Task 3) Subscale Filter Element Fabrication--To fabricate six subscale filter elements with integral flanges and closed ends, as well as fine pore size filtration membranes. Three filters were to have a central clean gas channel, while three would have no central channel. The filters were to be provided to FETC for testing in laboratory systems or pilot scale exposure systems as appropriate. The candles were to meet dimensional tolerances as provided by filter system suppliers.

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