Honeycomb Drying Method Using Dielectric and Microwave Stages
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Solution Overview
Problem
Existing methods for drying honeycomb structures, such as dielectric and microwave drying, often result in uneven temperature distribution and dimensional variations, leading to low productivity and quality issues in the final honeycomb product.
Innovation Solution
A method combining dielectric and microwave drying processes to uniformly dry honeycomb formed bodies, with dielectric drying removing 30-70% of moisture at a central temperature of 100°C or less, followed by microwave drying to remove residual moisture, ensuring minimal temperature deviation and maintaining the structural integrity of the honeycomb.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If dielectric drying or microwave drying is used alone, then drying speed is improved, but temperature distribution becomes uneven causing dimensional deviations
Solution Approach 1:
The drying process is segmented into two distinct stages: a dielectric drying stage for rapid moisture removal and a microwave drying stage for uniform completion. This segmentation allows each method to optimize its strengths while mitigating its weaknesses, achieving both high productivity and dimensional accuracy.
Solution Approach 2:
The patent merges dielectric drying and microwave drying into a combined process. The dielectric drying removes 30-70% of moisture rapidly, then microwave drying completes the process uniformly. This combination resolves the contradiction by integrating the high-speed capability of dielectric drying with the uniform heating capability of microwave drying.
2Productivity
If high temperature drying is applied to remove moisture quickly, then productivity is improved, but temperature distribution deviation increases
Solution Approach 1:
The patent changes the drying parameters by using dielectric drying at controlled temperatures (100-200°C) for the first stage, then transitioning to microwave drying. This parameter change allows rapid moisture removal without excessive temperature spikes, maintaining uniform temperature distribution while achieving high drying efficiency.
3Device complexity
If conventional drying methods are used, then equipment simplicity is maintained, but dimensional deviations require post-processing grinding
Solution Approach 1:
The patent implements feedback control by monitoring moisture content during drying and adjusting the drying process accordingly. The dielectric drying removes 30-70% of moisture, then microwave drying completes the process. This feedback mechanism ensures dimensional accuracy without requiring complex equipment or post-processing grinding.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach allows for the production of high-quality honeycomb structures with reduced dimensional deviations, enhancing productivity and ensuring consistent product quality.
Implementation Method 1
a dielectric drying process of obtaining a primary dried honeycomb formed body from which 30 to 70% of entire moisture contained in the unfired honeycomb formed body before the drying is removed by performing dielectric drying on the unfired honeycomb formed body
Implementation Method 2
a microwave drying process of obtaining a honeycomb dried body from which residual moisture is removed by performing microwave drying on the primary dried honeycomb formed body obtained in the dielectric drying process
Data Source
AI summary
A method for drying a honeycomb formed body, the honeycomb formed body being an unfired honeycomb formed body including a raw material composition containing a ceramic raw material and water, the method including: a dielectric drying process of obtaining a primary dried honeycomb formed body from which 30 to 70% of entire moisture contained in the unfired honeycomb formed body before the drying is removed by performing dielectric drying on the unfired honeycomb formed body while maintaining a temperature of a central portion of the unfired honeycomb formed body at 100° C. or less; and a microwave drying process of obtaining a honeycomb dried body from which residual moisture is removed by performing microwave drying on the primary dried honeycomb formed body obtained in the dielectric drying process.