共查询到6条相似文献,搜索用时 0 毫秒
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Dr. Ulf Roland Dr. Markus Kraus Dr. Ulf Trommler Dr. Frank Holzer Prof. Dr. Frank‐Dieter Kopinke 《化学,工程师,技术》2011,83(12):2260-2269
Dielectric heating with radio‐frequency energy can be applied for a wide spectrum of dry or moist zeolites. It is possible to homogeneously heat packed beds in technical scale. The energy absorption strongly varies with the zeolite type enabling selective heating of layered arrangements containing different zeolites. The specific effect of water interacting with the structural cations allows establishing pronounced temperature gradients within a packed bed with varying water content. For distinct materials such as zeolite NaY, a coupled water‐temperature pulse moving through the packed bed can be established. Potential applications for such a so‐called thermo‐chromatographic pulse range from adsorptive catalytic off‐gas cleaning to thermal regeneration of zeolites in the context of gas drying. 相似文献
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Dr. Ulf Roland Dr. Frank Holzer Dr. Ulf Trommler Christian Pfütze Prof. Dr. Frank‐Dieter Kopinke Christian Pfütze Dr.‐Ing. Olaf Freytag 《化学,工程师,技术》2011,83(3):254-261
Direct dielectric heating using radio waves, i. e., electromagnetic waves in the high‐frequency range, was successfully tested for the application in the field of building redevelopment. It could be shown that this method can be utilized to homogeneously and efficiently heat various materials such as sandstone and fibre concrete in a controlled manner. Final temperatures of more than 100 °C can be achieved. This allows drying of building materials without disturbance of the structure. By placing formed structures in a packed bed of an appropriate material, this method can also be applied for the preservation of cultural goods, for example for drying sculptures. 相似文献
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