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US 2010/0295218 A1Published application
Process for Drying Ceramic Honeycomb Bodies
AssigneeArgillon GmbH
InventorsRalf Dotzel, Jörg Münch
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Abstract
A process for the gentle and efficient drying of a ceramic honeycomb body is specified. The process is suitable for achieving, with uniform a drying of the honeycomb body, a short drying time and low shrinkage of the honeycomb body. For this, the honeycomb body which is in a moist prefabrication state is frozen and the moisture is removed from the frozen honeycomb body at a reduced pressure.
Claims13
1-12. (canceled)
A method of drying a porous ceramic honeycomb body for a catalyst or a particle filter, the process which comprises:
- providing a honeycomb body in a moist prefabricated state;
- freezing the moist honeycomb body to form a frozen honeycomb body;
- removing moisture from the frozen honeycomb body under a vacuum in a drying process;
- heating the honeycomb body by way of electromagnetic radiation selected from radiation in the long wave, short wave, or microwave range during the drying process;
- and
- thereby controlling at least one of a duration and an energy of the electromagnetic radiation in accordance with a desired degree of drying of the honeycomb body.
3 more elements
Dependencies are inferred from the claim text.