Design of a Mixed Ionic/Electronic Conducting Oxygen Transport Membrane Pilot Module
| Autor: | Ewald M. Pfaff, Anke Kaletsch, Christoph Broeckmann |
|---|---|
| Rok vydání: | 2012 |
| Předmět: |
Materials science
Atmospheric pressure General Chemical Engineering Oxygen transport Mechanical engineering General Chemistry Conductivity Industrial and Manufacturing Engineering Membrane Electrical resistivity and conductivity visual_art visual_art.visual_art_medium Ceramic Composite material Electrical conductor Perovskite (structure) |
| Zdroj: | Chemical Engineering & Technology. 35:455-463 |
| ISSN: | 0930-7516 |
| DOI: | 10.1002/ceat.201100447 |
| Popis: | In the last years, a lot of ceramic materials were developed that, at higher temperatures, have a high electrical conductivity and a high conductivity of oxygen ions. Such mixed ionic/electronic conductors can be used to produce high-purity oxygen. This work focuses on the realization of a pilot membrane module, with BSCF (Ba0.5Sr0.5Co0.8Fe0.2O3-δ) perovskite selected as the membrane material. An amount of 500 kg of powder was industrially fabricated, spray-granulized and pressed into tubes. The best operation conditions concerning energy consumption were calculated, and a module reactor was designed operating at 850 °C, with an air pressure of 15–20 bar on the feed site and a low vacuum of about 0.8 bar on the permeate site. Special emphasis was placed on joining alternatives for ceramic tubes in metallic bottoms. A first laboratory module was tested with a membrane area of 1 m2 and then advanced to a pilot module with 570 tubes and a capability of more than 300 000 L of pure oxygen per day. |
| Databáze: | OpenAIRE |
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