CN218221854U - SCR denitration catalyst anti-clogging device - Google Patents
SCR denitration catalyst anti-clogging device Download PDFInfo
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- CN218221854U CN218221854U CN202122655661.6U CN202122655661U CN218221854U CN 218221854 U CN218221854 U CN 218221854U CN 202122655661 U CN202122655661 U CN 202122655661U CN 218221854 U CN218221854 U CN 218221854U
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Abstract
The utility model relates to an exhaust gas denitration technical field, concretely relates to SCR denitration catalyst anti-clogging device, including dust remover, SCR denitration reactor, ammonia blender, the dust remover is connected with SCR denitration reactor through first pipeline, and the ammonia blender setting still includes the third pipeline on first pipeline, and third pipeline both ends are equipped with combustor and draught fan with the first pipe connection of ammonia blender both sides respectively on the third pipeline. The utility model discloses draw the flue gas part and heat up the flue gas temperature through the combustor, combustor burning heating flue gas to required temperature improves the flue gas temperature and gets into SCR denitration reactor again, and the rising of SCR denitration reactor temperature has improved the catalytic activity efficiency of catalyst, and the crystallization that slows down or eliminates ammonium bisulfate is appeared, simultaneously the utility model discloses can go into the whole abundant burning of combustor with coal tar in the flue gas of drawing forth to solve SCR denitration reactor catalyst and because of the problem that the coal tar concentrates and block up.
Description
Technical Field
The utility model relates to a waste gas denitration technical field, concretely relates to SCR denitration catalyst prevents blocking device.
Background
In the kiln industry, due to the unique characteristics of the glass kiln process and the waste gas components of a burner, the components of smoke pollutants are complex and contain SO 2 、NO x Dust, and glass raw material Na + And the like, alkali metal elements with extremely strong water solubility are easy to cause catalyst poisoning failure, and a Selective Catalytic Reduction (SCR) technology is the most widely applied flue gas denitration and purification technology internationally at present and has the characteristics of high denitration efficiency, simple structure of a denitration device, low operation cost and the like.
However, although the denitration efficiency of the SCR denitration technology is high, since some dust, water vapor, flue corrosion and falling objects and the like are inevitably mixed in the mixed flue gas, when the mixed flue gas enters the SCR denitration reactor catalyst, the mixed flue gas is easily attached to the surface of the air inlet of the catalyst, so that the pore channel of the catalyst is blocked, the catalytic activity is reduced, the resistance of a pipeline is increased, the phenomenon of low-temperature SCR catalyst is common, the flue gas emission of an industrial kiln is caused to have environmental protection hidden trouble, and the cleaning is very difficult, time-consuming and labor-consuming. The emergency stop treatment is required when the blockage is serious, the operation cost of an enterprise is increased, and huge loss is brought to the enterprise.
CN2020201160193 discloses an SCR denitration catalyst anti-clogging device, has introduced an SCR catalyst anti-clogging device in this patent, through installing high temperature resistant net conveyer belt at SCR catalyst air inlet, dust and the corrosive substance that the net conveyer belt was collected are driven to one side through the motor, and the dust blowing shower nozzle of rethread discharges in receiving grey fill to reach the mesh of preventing blockking up. CN2020215880734 discloses an anti-clogging SCR denitration device, and the patent introduces the problem of reducing dust in flue gas passing through catalyst by changing the flow area of flue gas. However, the defects of the above patents are that the problems of blockage of SCR catalyst crystals and blockage of sticky substances with low flue gas temperature cannot be solved, so that the later operation cost is high and the treatment is difficult.
SUMMERY OF THE UTILITY MODEL
Easy technical problem who is blockked up by crystallisate and ropy thing to prior art SCR denitration catalyst, the utility model provides an SCR denitration catalyst anti-clogging device has solved the import of ammonia-SCR denitration catalyst and has leaded to denitration catalyst pore to appear blockking up because ammonium bisulfate etc. appear appearing.
The utility model provides a SCR denitration catalyst anti-clogging device, including dust remover, SCR denitration reactor, ammonia mixer, the dust remover is connected with SCR denitration reactor through first pipeline, and the ammonia mixer sets up on first pipeline, and the ammonia mixer passes through second pipeline and outside confession ammonia device, still includes the third pipeline, and third pipeline both ends respectively with the first pipe connection of ammonia mixer both sides, be equipped with combustor and draught fan on the third pipeline.
Further, the combustor includes combustor body, burning sleeve pipe, steady flame device, and the combustor body is located the third pipeline outside, and steady flame device is located the third pipeline, and the combustor body passes through the burning sleeve pipe to be connected with steady flame device, and the burning sleeve pipe passes the third pipeline.
Furthermore, the flame stabilizing device is a metal cylinder, and hollow holes are formed in the surface of the metal cylinder, so that the flame stabilizing device can provide flame stabilizing effect for the end part of the combustion sleeve during combustion.
Furthermore, the induced draft fan is a high-temperature induced draft fan, and aims to realize high-temperature hot air assisted temperature rise through the high-temperature induced draft fan, so that combustion heat can be quickly supplemented to the SCR denitration reactor, an inlet of high-temperature flue gas after combustion is connected with an outlet of an ammonia mixer, the temperature of the flue gas at the inlet of the SCR denitration reactor is increased, the temperature of the flue gas can be increased to improve the catalytic activity and the reaction efficiency of the catalyst, the crystallization of ammonium bisulfate can be slowed down or eliminated when the high-temperature flue gas enters the inlet of the catalyst, the flue gas with coal tar enters the combustor to be fully combusted under the action of the high-temperature induced draft fan, and therefore the problem that the inlet catalyst of the SCR denitration reactor is blocked due to coal tar enrichment is solved.
Furthermore, the burner body is provided with an air distribution inlet, a main air gun and a high-energy ignition gun.
Further, the combustor sets up on the third pipeline of draught fan air outlet department, is close to the draught fan and is favorable to reducing calorific loss, and high temperature is combustion-supporting.
Further, the dust remover is a high-temperature electric dust remover.
The beneficial effects of the utility model reside in that: the utility model discloses draw forth the flue gas part through the combustor on the third pipeline with the flue gas temperature intensification, the flue gas is drawn forth to required temperature to the combustor burning heating, improves flue gas temperature reentrant SCR denitration reactor, and the rising of SCR reaction temperature has improved the catalytic activity and the reaction efficiency of catalyst, slows down or eliminates ammonium bisulfate's crystallization and appears, simultaneously the utility model discloses can go into the whole abundant burning of combustor with coal tar in the flue gas of drawing forth to solve SCR denitration reactor import catalyst and block up because of coal tar enrichment.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of example 1 according to an embodiment of the present invention.
Fig. 2 is a schematic view of the burner installation according to the embodiment of the present invention.
In the figure, 1-a dust remover, 2-a second pipeline, 3-a third pipeline, 4-a draught fan, 5-a combustor, 6-an ammonia mixer, 7-a first pipeline and 8-an SCR denitration reactor;
51-burner body, 52-main air gun, 53-air distribution inlet, 54-combustion sleeve, 55-flame stabilizer and 56-high-energy ignition gun.
Detailed Description
In order to make the technical solutions of the present invention better understood by those skilled in the art, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, but not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts shall belong to the protection scope of the present invention.
Example 1
SCR denitration catalyst anti-clogging device, including dust remover 1, SCR denitration reactor 8, ammonia mixer 6, dust remover 1 is high temperature electrostatic precipitator, dust remover 1 is connected with SCR denitration reactor 8 through first pipeline 7, ammonia mixer 6 sets up on first pipeline 7, ammonia mixer 6 supplies the ammonia device through second pipeline 2 and outside, still include third pipeline 3, 3 both ends of third pipeline are connected with first pipeline 7 of 6 both sides of ammonia mixer respectively, be equipped with combustor 5 and draught fan 4 on the third pipeline 3. The main fuel of the burner 5 is coke oven gas, and a two-stage ignition mode is adopted.
The burner 5 comprises a burner body 51, a combustion sleeve 54 and a flame holding device 55, wherein the burner body 51 is positioned outside the third pipeline 3, the flame holding device 55 is positioned inside the third pipeline 3, the burner body 51 is connected with the flame holding device 55 through the combustion sleeve 54, and the combustion sleeve 54 passes through the third pipeline 3. The flame stabilizing device 55 is a metal cylinder, and the surface of the metal cylinder is provided with hollowed holes.
The induced draft fan 4 is a high-temperature induced draft fan. The combustor 5 is arranged on the third pipeline 3 at the air outlet of the induced draft fan 4.
The burner body 51 is provided with an air distribution inlet 53, a main air gun 52 and a high-energy ignition gun 56.
The main air gun 52 adopts a multi-gun structure, and the special structure of the multi-gun can ensure that the fuel gas and the air are more uniformly mixed, thereby greatly reducing tar blockage and ensuring complete and sufficient performance.
Combustor 5 sets up ultraviolet ray formula flame detector, and 5 operation conditions of monitoring combustor avoid taking place the detonation, and the gas pipeline all is equipped with two way pneumatic fast disconnected valves, is equipped with blow-down valve and leak hunting switch between two pneumatic fast disconnected valves, carries out leak hunting before combustor 5 puts into operation between the valves and guarantees system's pipe safety. The gas pipeline in front of the burner 5 is provided with a pneumatic regulating valve which can regulate the gas quantity entering the burner 5 and the pressure of the pipeline. A low pressure switch, a high pressure switch and a pressure transmitter are arranged behind the regulating valve, so that the gas pressure can be monitored in real time, and the regulation is convenient. The opening of the regulating valve is adjusted according to the load requirement, and the inlet pressure of the main air gun 52 is adjusted, so that the load of the combustor 5 is adjusted.
Still be equipped with little air gun on the combustor body 51, the start-up sequence of combustor 5 is: the small air gun is fired by the firing gun and then the main air gun 52 is fired.
Although the present invention has been described in detail by referring to the drawings in conjunction with the preferred embodiments, the present invention is not limited thereto. Various equivalent modifications or substitutions can be made on the embodiments of the present invention by those skilled in the art without departing from the spirit and substance of the present invention, and these modifications or substitutions are intended to be within the scope of the present invention/any person skilled in the art can easily conceive of changes or substitutions within the technical scope of the present invention.
Claims (7)
1. The utility model provides a SCR denitration catalyst anti-clogging device, includes dust remover (1), SCR denitration reactor (8), ammonia mixer (6), and dust remover (1) is connected with SCR denitration reactor (8) through first pipeline (7), and ammonia mixer (6) set up on first pipeline (7), and ammonia mixer (6) supply ammonia device, its characterized in that through second pipeline (2) and outside: still include third pipeline (3), third pipeline (3) both ends are connected with first pipeline (7) of ammonia blender (6) both sides respectively, are equipped with combustor (5) and draught fan (4) on third pipeline (3).
2. The SCR denitration catalyst anti-clogging device of claim 1, wherein: combustor (5) includes combustor body (51), combustion sleeve (54), steady flame device (55), and combustor body (51) are located outside third pipeline (3), and steady flame device (55) are located third pipeline (3), and combustor body (51) are connected with steady flame device (55) through combustion sleeve (54), and combustion sleeve (54) pass third pipeline (3).
3. The SCR denitration catalyst anti-clogging device of claim 2, characterized in that: the flame stabilizing device (55) is a metal cylinder, and the surface of the metal cylinder is provided with hollowed holes.
4. The SCR denitration catalyst anti-clogging device according to claim 1, characterized in that: the induced draft fan (4) is a high-temperature induced draft fan.
5. The SCR denitration catalyst anti-clogging device of claim 2, characterized in that: the burner body (51) is provided with an air distribution inlet (53), a main air gun (52) and a high-energy ignition gun (56).
6. The SCR denitration catalyst anti-clogging device according to claim 1 or 4, characterized in that: the combustor (5) is arranged on the third pipeline (3) at the air outlet of the induced draft fan (4).
7. The SCR denitration catalyst anti-clogging device according to claim 1, characterized in that: the dust remover (1) is a high-temperature electric dust remover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122655661.6U CN218221854U (en) | 2021-11-01 | 2021-11-01 | SCR denitration catalyst anti-clogging device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122655661.6U CN218221854U (en) | 2021-11-01 | 2021-11-01 | SCR denitration catalyst anti-clogging device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218221854U true CN218221854U (en) | 2023-01-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122655661.6U Active CN218221854U (en) | 2021-11-01 | 2021-11-01 | SCR denitration catalyst anti-clogging device |
Country Status (1)
| Country | Link |
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| CN (1) | CN218221854U (en) |
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2021
- 2021-11-01 CN CN202122655661.6U patent/CN218221854U/en active Active
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