CN212757752U - Metal composite filter cylinder for high-temperature flue gas dedusting and denitration integrated system - Google Patents
Metal composite filter cylinder for high-temperature flue gas dedusting and denitration integrated system Download PDFInfo
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- CN212757752U CN212757752U CN202021530649.1U CN202021530649U CN212757752U CN 212757752 U CN212757752 U CN 212757752U CN 202021530649 U CN202021530649 U CN 202021530649U CN 212757752 U CN212757752 U CN 212757752U
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- flue gas
- denitration
- temperature flue
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Abstract
The utility model discloses a metal composite that is used for high temperature flue gas dust removal denitration integration system strains a section of thick bamboo, strain a section of thick bamboo including a plurality of metals that are used for removing dust, every is strained and all is equipped with the intermediate layer on the inner wall of straining a section of thick bamboo, is equipped with the denitration reductant in the intermediate layer, strain a section of thick bamboo open-top and connect the dust remover card, strain and be equipped with between section of thick bamboo and the dust remover card and be connected and sealing device. The utility model is suitable for a high temperature flue gas dust removal denitration has realized the application of bag collector at the high temperature flue gas, in 300 + 400 degrees centigrade within a range, can accomplish dust removal denitration simultaneously, reaches the effect of ultralow emission, and has practiced thrift area, and investment and working costs are lower.
Description
Technical Field
The utility model relates to a metal composite filter cylinder for high temperature flue gas dust removal denitration integration system.
Background
Along with the development and progress of society, the national attention on environmental protection is continuously strengthened, the smoke emission standard is increasingly strict, the related fields are developed from power plant boilers and heat source plant boilers to non-electric industries such as industrial kilns, pellet sintering machines in the steel industry and the like, and the strictest ultralow emission standard reaches that the dust is not more than 5mg/Nm3Sulfur dioxide not greater than 35mg/Nm3Nitrogen oxides not greater than 50mg/Nm3。
At present, the bag-type dust collector is used for most dust collection systems due to high dust collection efficiency and stable operation, but the filter materials of the used filter bag are mainly fiber filter materials, such as glass fibers, polyester needle felt, P84 needle felt, PTFE needle felt and various filter materials added with attached membranes. The filter bag of a common bag-type dust collector is limited by materials, the applied temperature space is limited, and the maximum tolerance temperature is about 280 ℃, so that the bag-type dust collector can not be used for removing dust from high-temperature smoke.
At present, denitration is mainly carried out by methods such as selective non-catalytic reduction (SNCR), Selective Catalytic Reduction (SCR), ozone denitration and the like, and several processes are often used in combination in order to meet the requirement of ultra-low emission. SCR is the mainstream scheme of flue gas denitration at present, and is efficient, and the operation is stable, but because conventional catalyst to the requirement of temperature window and reactor to area, a lot of transformation projects can't directly be used, need carry out corresponding transformation and can use.
Therefore, how to effectively solve the problem of dedusting and denitration of the flue gas of the high-temperature complicated modification project is an important problem in the current environmental protection.
Disclosure of Invention
In order to solve the technical problem, the utility model provides a simple structure, safe and reliable's a metal composite filter cylinder for high temperature flue gas dust removal denitration integration system.
The utility model provides a technical scheme of above-mentioned problem is: the utility model provides a metal composite filter cylinder for high temperature flue gas dust removal denitration integration system, includes that a plurality of metals that are used for removing dust strain a section of thick bamboo, and every is strained and all is equipped with the intermediate layer on straining the inner wall, is equipped with the denitration reductant in the intermediate layer, strain a section of thick bamboo open-top and connect the dust remover card, strain and be equipped with between a section of thick bamboo and the dust remover card and be connected and sealing device.
The metal composite filter cylinder for the high-temperature flue gas dedusting and denitration integrated system is characterized in that a ring plate is arranged at the top of the filter cylinder, the connecting and sealing device comprises a cross-shaped fixed sealing pressing strip, an L-shaped fixed sealing pressing strip and a single-beam fixed sealing pressing strip, the ring plate at the top of the filter cylinder in the middle area and the flower plate at the top of the adjacent filter cylinder are connected and fixed on the flower plate of the dust remover through the cross-shaped fixed sealing pressing strip, the ring plate at the top of the filter cylinder in the edge area and the flower plate at the top of the adjacent filter cylinder are connected and fixed on the flower plate of the dust remover through the L-shaped fixed sealing pressing strip, and the ring plate at the top of the filter cylinder in the corner is fixed.
The metal composite filter cylinder for the high-temperature flue gas dedusting and denitration integrated system is characterized in that the denitration reducing agent is one of ammonia water, liquid ammonia, ammonia gas and urea.
According to the metal composite filter cylinder for the high-temperature flue gas dedusting and denitration integrated system, the microparticle catalyst is arranged between the inner wall of the filter cylinder and the interlayer.
The beneficial effects of the utility model reside in that: the utility model is suitable for a high temperature flue gas dust removal denitration has realized the application of bag collector at the high temperature flue gas, in 300 + 400 degrees centigrade within a range, can accomplish dust removal denitration simultaneously, reaches the effect of ultralow emission, and has practiced thrift area, and investment and working costs are lower.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
Fig. 2 is a schematic structural view of the connecting and sealing device of the present invention.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and examples.
As shown in fig. 1 and 2, a metal composite filter cylinder for a high-temperature flue gas dedusting and denitration integrated system comprises a plurality of metal filter cylinders 2 for dedusting, wherein an interlayer is arranged on the inner wall of each filter cylinder 2, a denitration reducing agent is arranged in the interlayer, and a microparticle catalyst 3 is arranged between the inner wall of each filter cylinder 2 and the interlayer. The top of the filter cylinder 2 is opened and connected with a dust remover flower plate 4; a connecting and sealing device 1 is arranged between the filter cartridge 2 and the dust remover flower plate 4 and is used for ensuring no smoke leakage.
The top of the filter cylinder 2 is provided with a ring plate 11, the connecting and sealing device 1 comprises a cross-shaped fixed sealing bead 12, an L-shaped fixed sealing bead 13 and a single-beam fixed sealing bead 14, the ring plate at the top of the filter cylinder in the middle area and the flower plate 4 at the top of the adjacent filter cylinder are connected and fixed on the flower plate 4 of the dust remover through the cross-shaped fixed sealing bead 12, the ring plate at the top of the filter cylinder in the edge area and the flower plate 4 at the top of the adjacent filter cylinder are connected and fixed on the flower plate 4 of the dust remover through the L-shaped fixed sealing bead 13, and the ring plate at the top of the filter cylinder in the corner is fixed on the flower plate 4 of the dust remover through the single-beam. The ring plate at the top of each filter cylinder is fixed by four bolts, and the ring plates at the top of all the filter cylinders are connected with the flower plate 4 into a whole.
The filter cartridge 2 is a micro-filter element formed by molding extremely fine metal fiber wires and metal powder through processes of non-woven paving, overlapping, isostatic pressing and the like and sintering at high temperature, and is high in filtering precision, good in air permeability, high in mechanical strength, corrosion-resistant, long in service life and suitable for being used at high temperature.
The denitration reducing agent is a microparticle catalyst 3 which is formed by firing and can be placed in the interlayer and is used for catalyzing nitrogen oxides in flue gas to react with the denitration reducing agent to generate nitrogen, and one of ammonia water, liquid ammonia, ammonia gas and urea is adopted. The denitration reducing agent has certain mechanical strength and a temperature interval suitable for denitration reaction, and can be taken out for replacement after the service life of the catalyst is over.
The utility model discloses a working process does: the flue gas with the temperature of 300-400 ℃ enters the metal composite filter cylinder through the air volume adjusting device, enters from the outside of the metal filter cylinder, is blocked from coming when passing through the outer surface of the filter cylinder 2, enters the interlayer after dust removal, and the dust concentration is reduced to 10 mg/Nm3Or even 5mg/Nm3The high-temperature flue gas reacts with the denitration reducing agent sprayed in the interlayer in advance in the temperature window under the catalytic action of the microparticle catalyst 3 to achieve the denitration purpose, and then is discharged from the top of the filter bag to enter the flue inside the dust remover to enter the outlet of the dust remover, so that the dust removal and denitration purposes are achieved.
Claims (4)
1. The utility model provides a metal composite who is used for high temperature flue gas dust removal denitration integration system strains a section of thick bamboo which characterized in that: the metal filter cartridge comprises a plurality of metal filter cartridges for removing dust, wherein each filter cartridge is provided with an interlayer on the inner wall, a denitration reducing agent is arranged in each interlayer, the top of each filter cartridge is opened and connected with a dust remover pattern plate, and a connecting and sealing device is arranged between each filter cartridge and the dust remover pattern plate.
2. The metal composite filter cartridge for the high-temperature flue gas dedusting and denitration integrated system as claimed in claim 1, is characterized in that: the filter cartridge is characterized in that a ring plate is arranged at the top of the filter cartridge, the connecting and sealing device comprises a cross-shaped fixed sealing pressing strip, an L-shaped fixed sealing pressing strip and a single-beam fixed sealing pressing strip, the ring plate at the top of the filter cartridge in the middle area and the flower plate at the top of the adjacent filter cartridge are connected and fixed on the flower plate of the dust remover through the cross-shaped fixed sealing pressing strip, the ring plate at the top of the filter cartridge in the edge area and the flower plate at the top of the adjacent filter cartridge are connected and fixed on the flower plate of the dust remover through the L-shaped fixed sealing pressing strip, and the ring plate at the top of the filter cartridge in the corner is fixed.
3. The metal composite filter cartridge for the high-temperature flue gas dedusting and denitration integrated system as claimed in claim 1, is characterized in that: the denitration reducing agent is one of ammonia water, liquid ammonia, ammonia gas and urea.
4. The metal composite filter cartridge for the high-temperature flue gas dedusting and denitration integrated system as claimed in claim 1, is characterized in that: and a microparticle catalyst is arranged between the inner wall of the filter cylinder and the interlayer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021530649.1U CN212757752U (en) | 2020-07-29 | 2020-07-29 | Metal composite filter cylinder for high-temperature flue gas dedusting and denitration integrated system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021530649.1U CN212757752U (en) | 2020-07-29 | 2020-07-29 | Metal composite filter cylinder for high-temperature flue gas dedusting and denitration integrated system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212757752U true CN212757752U (en) | 2021-03-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021530649.1U Active CN212757752U (en) | 2020-07-29 | 2020-07-29 | Metal composite filter cylinder for high-temperature flue gas dedusting and denitration integrated system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212757752U (en) |
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2020
- 2020-07-29 CN CN202021530649.1U patent/CN212757752U/en active Active
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