A fabric-reinforced high-silica fiber filter tube and its preparation method
A high-silica fiber and fabric-reinforced technology, applied in separation methods, chemical instruments and methods, and dispersed particle filtration, can solve the problem of ineffective treatment of large particles of dust and small particles of nitrogen oxides, affecting practical application effects, and high temperature Enhancement and other issues to achieve the effect of improving dust removal and denitrification efficiency, reducing costs and increasing strength
Active Publication Date: 2020-12-08
DONGHUA UNIV +1
View PDF6 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0006] The currently known ceramic filter cartridges are all made of ceramic fibers, so they all have the disadvantages of low strength and easy broken tubes
Moreover, ceramic fibers are all short fibers and cannot be woven into fabrics for high temperature reinforcement.
The fracture of the ceramic fiber filter cartridge basically declares the failure of the whole set of equipment, which greatly affects the actual application effect.
In addition, this product is a single ceramic fiber structure product, which cannot effectively treat large particles of dust and small particles of nitrogen oxides, and the efficiency is low
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 1
[0030] This embodiment provides a method for preparing a fabric-reinforced high-silica fiber filter tube, and the specific steps are as follows:
[0031] Step 1): High silica fiber (Shaanxi Huate Glass Fiber Group Co., Ltd., 9 microns) and ceramic fiber (Zhejiang Hongda Crystal Fiber Co., Ltd., aluminum silicate fiber) are chopped respectively, and ball milled in a ball mill tank for 2 -6h;
[0032] Step 2): Filter the ground high silica fiber and ceramic fiber, remove the slag balls and inclusions at the bottom, and obtain high silica short fiber powder and ceramic short fiber powder with a length of 30-300 μm;
[0033] Step 3): Add 6wt.% high-silica short fiber powder and 5wt.% silica sol into deionized water, and mix under high-speed stirring to prepare a uniform high-silica short-fiber slurry; the mass fraction is 8wt. % ceramic short fiber powder, 0.5wt.% silica sol, added to deionized water, mixed under high-speed stirring state to prepare uniform ceramic short fiber sl...
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 |
|---|---|---|
| length | aaaaa | aaaaa |
| denitrification rate | aaaaa | aaaaa |
| dust removal efficiency | aaaaa | aaaaa |
Login to View More
Abstract
The invention discloses a fabric-reinforced high-silica fiber filter tube, which is characterized in that the fiber filter tube comprises a grid cylinder formed by weaving high-silica fibers with hightemperature resistance into a grid structure, the inner layer of the grid cylinder is a high-silica short fiber coating, and the outer layer of the grid cylinder is a ceramic short fiber coating. A desulfurization and denitrification catalyst can also be attached to the high-silica short fiber coating. According to the invention, the reinforced grid cloth is woven by utilizing the high-silica fibers capable of being woven to resist high temperature, so that the mechanical strength of the fiber filter pipe is greatly improved, and the fiber filter pipe breakage is reduced. In addition, throughfiber structures on the inner side and the outer side, dust removal and desulfurization and denitrification are emphasized respectively, and the fiber filter tube has the characteristics of high efficiency, good temperature resistance and reciprocity, long service lifetime and the like.
Description
technical field [0001] The invention relates to a flue gas dedusting and denitrification high-silica fiber filter tube used in factories such as metallurgy, building materials, glass, and cement, and belongs to the technical field of flue gas treatment and filtering equipment. Background technique [0002] With the demand for energy saving and environmental protection, the requirements for industrial flue gas emissions are getting higher and higher. Not only for solid dust, but also for the concentration of sulfide and nitrogen oxides in flue gas, there are clear limit indicators. For example, in the dust emission required by power plants, the new standard of GB13223-2011 stipulates that the emission of dust in new coal-fired power plants should be less than 30mg / m 3 , SO 2 The emission limit is 100mg / m 3 , NO x The emission limit is 100mg / m 3 . Other industries such as metallurgy, chemical industry, building materials, glass, cement and other industries have similar r...
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 & AuthorityPatents(China)
IPC IPC(8): B01D46/00B01D46/24B01D53/86B01D53/56
CPCB01D46/0001B01D46/2411B01D53/8637
Inventor汪庆卫闫坦罗理达刘津高长龙
OwnerDONGHUA UNIV