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Microwave drying method of honeycomb formed body

A technology of microwave drying and molding, which is applied in the direction of microwave heating, drying of solid materials, drying of ceramic products, etc., can solve the problems of increased pressure loss, etc., and achieve the effect of reducing temperature difference and inhibiting deformation

Active Publication Date: 2016-10-12
NGK INSULATORS LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The catalyst is supported on the honeycomb structure, but if the catalyst is supported on the cell wall surface, the cell wall including the catalyst layer will actually become thicker, and the pressure loss after the catalyst is loaded will increase.

Method used

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  • Microwave drying method of honeycomb formed body
  • Microwave drying method of honeycomb formed body
  • Microwave drying method of honeycomb formed body

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Embodiment Construction

[0031] Hereinafter, embodiments of the microwave drying method of the honeycomb formed body of the present invention will be described with reference to the drawings. The present invention is not limited to the following embodiments, and changes, corrections, improvements, and the like can be added without departing from the scope of the present invention.

[0032] Microwave drying method 1 for a formed honeycomb body (hereinafter, simply referred to as "drying method 1") according to an embodiment of the present invention includes a step of introducing the formed honeycomb body 10 into a drying furnace (not shown); The step of arranging the microwave reflector 20 around the formed honeycomb body 10 to be introduced; and the microwave drying step of drying the formed honeycomb body 10 by irradiating microwaves to the formed honeycomb body 10 on which the microwave reflector 20 is placed.

[0033] Described in more detail, the introducing step of the drying method 1 uses an ext...

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Abstract

Provided is a microwave drying method of a honeycomb formed body that, when the honeycomb formed body is induction-dried by irradiating with microwaves, reduce the temperature gradient inside of the formed body, whereby no defective shapes, such as deformation of cells of the honeycomb formed body, occur. A microwave drying method (1) of a honeycomb formed body includes: an introduction step of disposing the honeycomb formed body (10) while keeping an axis direction (X) of cells (11) of the honeycomb formed body vertically and introducing the honeycomb formed body (10) into a drying furnace capable of irradiating with microwaves; a reflector placing step of placing a microwave reflector (20) above the honeycomb formed body (10), the microwave reflector including a reflecting face having a coverage factor to an area of an end face of the honeycomb formed body (10) that is 15% to 30%; and a microwave drying step of irradiating the honeycomb formed body (10) with the microwaves of 915 MHz in frequency from above to dry the honeycomb formed body.

Description

technical field [0001] The invention relates to a microwave drying method for a honeycomb formed body. More specifically, it relates to a microwave drying method of a honeycomb formed body in which microwaves are used to dry the honeycomb formed body. Background technique [0002] Conventionally, ceramic honeycomb structures have been used in a wide range of applications such as catalyst carriers for automobile exhaust gas purification, diesel particulate removal filters, and heat storage bodies for combustion devices. In the case of a honeycomb structure made of ceramics (hereinafter, simply referred to as a "honeycomb structure"), a formed honeycomb body is formed by extruding a pre-prepared molding material (clay) into a desired shape using an extrusion molding machine, The honeycomb formed body is cut into individual honeycomb formed bodies, dried and end face processed, and then fired at a high temperature to produce a firing step. In particular, in a large-scale hone...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F26B23/08
CPCF26B23/04B28B11/241B28B11/243H05B6/80H05B2206/046F26B3/347F26B2210/02
Inventor 朝仓德洋奥村健介林清一朗
Owner NGK INSULATORS LTD
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