Process for preparation of silicon carbide segment for honeycomb ceramic filter
A honeycomb ceramic and filter technology, which is applied in ceramic products, chemical instruments and methods, filtration and separation, etc., can solve the problems of restricting the use of technology and difficulty in forming protrusions.
Inactive Publication Date: 2010-03-24
汉瑟拉有限公司
View PDF2 Cites 5 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Although the above techniques all suggest the formation of protrusions, the practical use of these techniques is limited due to the difficulty of forming protrusions in practice.
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0027] The present invention provides a method of preparing silicon carbide segments for use as honeycomb ceramic filters for diesel particulate filters (DPFs), the method comprising drying, perforating, plugging and A sintering process in which a material (sealant) is applied to the dividing walls of the segments at opposite ends of the segment during the plugging process, the material (sealant) will melt and adhere to the unit during sintering corners of the unit, thereby sealing the corners of the unit.
[0028] According to this method, blocking can be reliably achieved even at the corners of the cells. Accordingly, the bonding force between each plug and the partition wall associated therewith can be improved while preventing the phenomenon of leakage of particulate matter or dust due to insufficient packing of the plugging material, which is called leak plugging, and This minimizes the amount of gas that is emitted without filtering. Thus, the present invention provide...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
| Property | Measurement | Unit |
|---|---|---|
| thickness | aaaaa | aaaaa |
| thickness | aaaaa | aaaaa |
Login to View More
Abstract
Disclosed herein is a method for preparing a silicon carbide segment for a honeycomb ceramic filter as a diesel particulate filter (DPF) by conducting drying, perforating, plugging, and sintering processes for an extruded body cut into a segment having a predetermined size, wherein a sealant, which will melt and adhere to corners of cells in the sintering process, to seal the cell corners, is applied to partition walls of the segment at opposite ends of the segment in the plugging process. In the method, a material (sealant), which will melt and adhere to the corners of cells in a sintering process, to seal the cell corners, is applied to partition walls at opposite ends of the segment in a plugging process, so that it is possible to prevent noxious particulate matter contained in an exhaust gas from being discharged to the atmosphere without being filtered out due to the existence of fine gaps formed between the plugs and the partition walls or the non-existence of plugs. It is also possible to enhance the bonding force of the plugs to the cell partition walls, and thus to prevent the plugs from being separated due to an external force such as impact or vibration.
Description
technical field [0001] The present invention relates to a method for preparing a silicon carbide segment for a honeycomb ceramic filter, and more particularly, to a method for preparing a silicon carbide segment for a honeycomb ceramic filter with very excellent filtration performance , the method includes cutting the extruded body into segments of predetermined dimensions for perforation, plugging, and sintering processes, wherein a material (sealant) is applied to the segments at opposite ends of the segments during the plugging process. On the bulkhead, the material (sealant) will melt and adhere to the corners of the unit during sintering to seal the corners of the unit so that the plugging can be completely achieved even at the corners of the unit, thereby preventing The clogging of the leak caused by the incomplete filling of the filter can cause the leakage of particulate matter or dust, so as to minimize the amount of unfiltered gas emission. Background technique ...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): B01D39/00
CPCB01D46/2459B01D46/0001B01D46/2474B01D46/2466C04B38/0006C04B41/4523B01D2046/2485B01D46/2418B01D2046/2477C04B35/653B01D2046/2481B01D46/2478B01D46/2482C04B35/565B01D39/00
Inventor 孔荣民韩大坤
Owner 汉瑟拉有限公司