Systems and methods for efficient microwave drying of extruded honeycomb structures
US9038284B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 29, 2011 |
| Grant date | May 26, 2015 |
| Priority date | — |
| Expiry date | Jan 19, 2034 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF27D2099/0028
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Systems and methods for efficient microwave drying of extruded honeycomb structures are disclosed. The methods include conveying first and second sets of honeycomb structures in opposite directions through multiple applicator cavities. Each honeycomb structure has a moisture content MC, and the honeycomb structures within each cavity define an average moisture content MCA between 40% and 60% therein. The methods include irradiating the first and second sets of honeycomb structures within the cavities with microwave radiation having an amount of input microwave power PI that results in an amount of reflected microwave power PR from the honeycomb structures, where PR<(0.2)PI. This allows for a relatively high microwave power to be maintained in each cavity. Batch microwave drying methods are also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.