CN214210062U - High temperature denitration dust removal waste heat recovery integrated device - Google Patents
High temperature denitration dust removal waste heat recovery integrated device Download PDFInfo
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- CN214210062U CN214210062U CN202023173068.XU CN202023173068U CN214210062U CN 214210062 U CN214210062 U CN 214210062U CN 202023173068 U CN202023173068 U CN 202023173068U CN 214210062 U CN214210062 U CN 214210062U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/30—Technologies for a more efficient combustion or heat usage
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
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Abstract
The utility model discloses a high-temperature denitration dust removal waste heat recovery integrated device, which relates to the technical field of denitration dust removal devices, and comprises an air inlet flue, a flue gas treatment device, an ammonia spraying device and an air outlet flue, wherein a waste heat boiler, a denitration device, a filtering device and a dust outlet device are sequentially arranged in the flue gas treatment device from top to bottom, the dust outlet device is provided with a dust outlet, and a fan is arranged at the outlet of the air outlet flue; kiln tail gas lets in from the entry of inlet flue, and the export of inlet flue is connected with flue gas processing apparatus's air inlet, and flue gas processing apparatus's first gas outlet is linked together with the air inlet of spouting ammonia device, and the gas outlet of spouting ammonia device is linked together with inlet flue, and flue gas processing apparatus's second gas outlet is linked together with the entry of outlet flue, and first gas outlet and second gas outlet all are located denitrification facility's top, and the flue gas that handles is discharged from the export of outlet flue. The utility model discloses dust removal, denitration still have waste heat recovery module equipment as an organic whole, practice thrift area.
Description
Technical Field
The utility model relates to a denitration dust collector technical field especially relates to a high temperature denitration dust removal waste heat recovery integrated device.
Background
Along with the economic development of China and the higher and higher requirements of people on the environment, the higher and higher requirements of cement, glass and biomass boilers on dust removal and denitration are provided, the temperature difference resistance and the high resistance of the traditional cloth bag dust removal cannot meet the current situation, the dust content after the cement denitration is higher, the abrasion to a catalyst is larger, the service life is shortened, the problems of complicated engineering process design, higher requirements on a soot blower, easy blockage of the catalyst, larger occupied area and steel structure and the like exist at the same time. Meanwhile, the construction time is long, and the denitration space is not considered.
Therefore, a novel dust removal and denitration waste heat recovery device is urgently needed in the market for solving the problems.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a high temperature denitration dust removal waste heat recovery integrated device for solve the technical problem that exists among the above-mentioned prior art, dust removal, denitration waste heat recovery module assembly become the integral type structure in addition, reduction area and manufacturing cost that can be very big.
In order to achieve the above object, the utility model provides a following scheme:
the utility model discloses a high temperature denitration dust removal waste heat recovery integrated device, including inlet flue, flue gas processing apparatus, ammonia spraying device and outlet flue, exhaust-heat boiler, denitrification facility, filter equipment and dust discharging device have been equipped with from top to bottom in the flue gas processing apparatus in proper order, exhaust-heat boiler recycles after absorbing the heat of high temperature flue gas, denitrification facility carries out the denitration reaction to tail gas, dust in the tail gas is got rid of to the filter equipment, the dust discharging device is equipped with the dust outlet, the dust outlet is located the flue gas processing apparatus lower extreme, and the dust is discharged from the dust outlet, the outlet flue is equipped with the fan;
kiln tail gas is introduced from an inlet of the gas inlet flue, an outlet of the gas inlet flue is connected with a gas inlet of the gas treatment device, the gas inlet of the gas treatment device is located between the filtering device and the dust outlet device, a first gas outlet of the gas treatment device is communicated with a gas inlet of the ammonia spraying device, a gas outlet of the ammonia spraying device is communicated with the gas inlet flue, a second gas outlet of the gas treatment device is communicated with an inlet of the gas outlet flue, the first gas outlet and the second gas outlet are both located above the denitration device, and treated gas is discharged from an outlet of the gas outlet flue.
Preferably, the ammonia spraying device comprises an ammonia tank, a metering pump, an ammonia spraying pipeline and a return pipeline, wherein the first end of the return pipeline is connected with the first gas outlet, the second end of the return pipeline is communicated with the gas inlet flue, the first end of the ammonia spraying pipeline is communicated with the ammonia tank, the second end of the ammonia spraying pipeline is communicated with the return pipeline, and the metering pump is arranged on the ammonia spraying pipeline.
Preferably, the second end of the return line is connected with a plurality of ammonia injection grills, each ammonia injection grille is provided with a regulating valve, the ammonia injection grille is positioned in the air inlet flue, the second end of the ammonia injection line is provided with a spray head, and the spray head is positioned in the return line.
Preferably, the denitration device is a denitration catalyst, and the denitration catalyst is a honeycomb catalyst.
Preferably, the filtering device is a metal fiber filter bag, and the number of the metal fiber filter bags is multiple.
Preferably, a pulse soot blower is fixed between the denitration device and the filtering device.
Preferably, the dust outlet device comprises an ash bucket, an electric tracing band and an electric valve, the electric tracing band is arranged on the ash bucket, the diameter of the ash bucket is gradually reduced from top to bottom, the lower end of the ash bucket is provided with the dust outlet, and the electric valve is fixed at the dust outlet.
Preferably, the flue gas treatment device is also provided with an access door.
Preferably, a flow guide channel is arranged between the outlet of the air inlet flue and the air inlet of the flue gas treatment device, the first end of the flow guide channel is fixedly connected with the outlet of the air inlet flue, and the second end of the flow guide channel is fixedly connected with the air inlet of the flue gas treatment device; the cross-sectional area of the flow guide channel gradually increases along the direction from the first end to the second end of the flow guide channel.
Preferably, a mixer is arranged on the air inlet flue.
The utility model discloses for prior art gain following technological effect:
1. can be with dust removal, denitration and waste heat recovery integrated into an organic whole structure, can demolish original exhaust-heat boiler and build this structure, reduction area and manufacturing cost that can be very big.
2. The metal fiber filter bag is arranged, so that dust in the waste gas can be effectively filtered, and the dust is prevented from entering the catalyst, and the service life of the catalyst is prolonged.
3. High-temperature gas after denitration treatment is conveyed into liquid ammonia to be gasified, so that the phenomenon that the liquid ammonia and dust are mutually adsorbed can be effectively prevented.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic structural diagram of the high-temperature denitration dust removal waste heat recovery integrated device in the embodiment;
in the figure: 1-high temperature denitration dedusting waste heat recovery integrated device; 2-an air inlet flue; 3-a flue gas treatment device; 4-air outlet flue; 5-ammonia tank; 6-a metering pump; 7-a denitration device; 8-a filtration device; 9-ash bucket; 10-an electrically operated valve; 11-ammonia injection pipeline; 12-a return line; 13-ammonia injection grid; 14-a mixer; 15-pulse soot blower; 16-waste heat boiler.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The utility model aims at providing a high temperature denitration dust removal waste heat recovery integrated device for solve the technical problem that exists among the above-mentioned prior art, dust removal, denitration waste heat recovery module assembly become the integral type structure in addition, reduction area and manufacturing cost that can be very big.
In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention is described in detail with reference to the accompanying drawings and the detailed description.
As shown in fig. 1, the embodiment provides a high-temperature denitration dust removal waste heat recovery integrated device 1, which includes an air inlet flue 2, a flue gas treatment device 3, an ammonia spraying device and an air outlet flue 4. Be equipped with exhaust-heat boiler 16, denitrification facility 7, filter equipment 8 and play dirt device from top to bottom in the flue gas processing apparatus 3 in proper order, exhaust-heat boiler 16's effect is with the heat absorption in the high temperature flue gas after the denitration to with its recycle, the function is similar to the heat exchanger, and exhaust-heat boiler here uses waste exhaust-heat boiler can. Denitration device 7 is arranged in carrying out denitration reaction to tail gas, and filter equipment 8 can get rid of the dust in the tail gas, and it is equipped with out the dirt mouth to go out the dirt device, and it is located flue gas treatment device 3 lower extreme to go out the dirt mouth, and the effect of going out the dirt mouth is derived the dust after will filtering. The fan is arranged at the outlet of the air outlet flue 4 and plays a role in absorbing the kiln tail gas, so that the tail gas is guided in the moving process.
Kiln tail gas is let in from the entry of air inlet flue 2, and the export of air inlet flue 2 is connected with the air inlet of flue gas processing apparatus 3. A first gas outlet of the flue gas treatment device 3 is communicated with a gas inlet of the ammonia spraying device, and the first gas outlet is positioned on the side wall of the flue gas treatment device 3. The gas outlet of the ammonia spraying device is communicated with the gas inlet flue 2, and the ammonia spraying device is used for supplementing ammonia required in the denitration reaction process. And a second air outlet of the flue gas treatment device 3 is communicated with an inlet of the air outlet flue 4, and the second air outlet is positioned at the top of the flue gas treatment device 3. The first air outlet and the second air outlet are both positioned above the denitration device 7, the first air outlet is lower than the waste heat boiler 16, and the treated flue gas is discharged from an outlet of the air outlet flue 4.
When the device is used, kiln tail gas is introduced from an inlet of the gas inlet flue 2 and then enters from a gas inlet of the flue gas treatment device 3. The flue gas takes the lead to pass through filter equipment 8, and the dust drops on a dirt device behind filter equipment 8, blows off through a dirt mouth department at last. After tail gas passes through denitrification facility 7 under the drive of fan, in some high temperature tail gas flows back through first gas outlet and spouts the ammonia device, provides high temperature for liquid ammonia, makes its gasification become ammonia, can effectually prevent that liquid ammonia from adsorbing each other with the dust in 2 in-process of flue of admitting air like this. And the other part of the tail gas passes through the waste heat boiler 16, the waste heat boiler 16 absorbs most of heat of the tail gas, after waste heat recovery, the rest tail gas flows out from the second air outlet, and then enters the next procedure through the air outlet flue 4.
For the ammonia injection device, in the embodiment, the ammonia injection device comprises an ammonia water tank 5, a metering pump 6, an ammonia injection pipeline 11 and a return pipeline 12. The first end of return line 12 is connected with first gas outlet, and the second end of return line 12 is linked together with air intake flue 2, and the first end of spouting ammonia pipeline 11 is linked together with aqueous ammonia jar 5, and the second end of spouting ammonia pipeline 11 is linked together with return line 12, and measuring pump 6 sets up on spouting ammonia pipeline 11. When the device is used, part of the treated high-temperature tail gas flows to the air inlet flue 2 through the return pipeline 12, meanwhile, the ammonia water tank 5 introduces ammonia water to the return pipeline 12, the ammonia water is contacted with the high-temperature tail gas to become ammonia gas, and then the ammonia gas is introduced into the air inlet flue 2 together.
Further, in this embodiment, the second end of the return line 12 is connected to a plurality of ammonia injection grills 13, and each ammonia injection grille 13 is provided with a regulating valve for controlling the opening and closing of the ammonia injection grille 13. The ammonia injection grid 13 is positioned in the air inlet flue 2, the second end of the ammonia injection pipeline 11 is provided with a spray head, and the spray head is positioned in the return pipeline 12. Ammonia gas from the return line 12 is passed into the inlet gas flue 2 through an ammonia injection grid 13.
In the denitration device 7, in the present embodiment, the denitration device 7 is a denitration catalyst, and the denitration catalyst is a honeycomb catalyst. The honeycomb catalyst may be commercially available, and the honeycomb catalyst is matched to the diameter of the inside of the flue gas treatment device 3.
In this embodiment, the filter device 8 is a metal fiber filter bag, and the filtering precision is high, and within 5 μm, there are a plurality of metal fiber filter bags. When tail gas enters the flue gas treatment device 3, dust in the tail gas can be adsorbed by the metal fiber filter bag, so that the dust and the tail gas are prevented from rising together and entering the denitration device 7, and the service life of the honeycomb catalyst is shortened.
In order to make the dust on the metal fiber filter bag fall into the dust outlet device, in this embodiment, a pulse soot blower 15 is fixed between the denitration device 7 and the filter device 8. After the tail gas is treated, the fan is closed, then the pulse soot blower 15 is started, the wind direction of the pulse soot blower 15 is opposite to that of the fan, and dust on the metal fiber filter bag is blown downwards into the dust outlet device.
To the concrete structure of play dirt device, in this embodiment, go out the dirt device and include ash bucket 9, electric tracing band and electric valve 10, thereby adopt electric tracing band technique to play thermal-insulated technological effect on the ash bucket 9, be equipped with electric tracing band on the ash bucket 9, electric tracing band is a common heat preservation device, ash bucket 9 is the toper structure, ash bucket 9 reduces from top to bottom diameter gradually, the lower extreme of ash bucket 9 is the dust outlet, electric valve 10 is fixed in the dust outlet department, can pour the dust in the ash bucket 9 when electric valve 10 opens.
In order to facilitate the staff to detect the safety situation in the flue gas treatment device 3 and get into it inside to maintain, in this embodiment, there is an access door on the flue gas treatment device 3.
In this embodiment, a flow guide channel is arranged between the outlet of the air inlet flue 2 and the air inlet of the flue gas treatment device 3, a first end of the flow guide channel is fixedly connected with the outlet of the air inlet flue 2, and a second end of the flow guide channel is fixedly connected with the air inlet of the flue gas treatment device 3; the cross-sectional area of the flow guide passage gradually increases in a direction from the first end to the second end of the flow guide passage. The guide channel is used for guiding the tail gas in the air inlet flue 2 into the flue gas treatment device 3.
In order to enhance the mixing degree of the ammonia gas and the tail gas, in this embodiment, the mixer 14 is provided on the intake flue 2, and the mixer 14 may be commercially available.
The principle and the implementation mode of the present invention are explained by applying specific examples in the present specification, and the above descriptions of the examples are only used to help understanding the method and the core idea of the present invention; meanwhile, for the general technical personnel in the field, according to the idea of the present invention, there are changes in the concrete implementation and the application scope. In summary, the content of the present specification should not be construed as a limitation of the present invention.
Claims (10)
1. The utility model provides a high temperature denitration dust removal waste heat recovery integrated device which characterized in that: the waste heat boiler absorbs heat of high-temperature flue gas and then is recycled, the denitration device carries out denitration reaction on the tail gas, the filter device removes dust in the tail gas, the dust outlet device is provided with a dust outlet, the dust outlet is positioned at the lower end of the flue gas treatment device, the dust is discharged from the dust outlet, and the air outlet flue is provided with a fan;
kiln tail gas is introduced from an inlet of the gas inlet flue, an outlet of the gas inlet flue is connected with a gas inlet of the gas treatment device, the gas inlet of the gas treatment device is located between the filtering device and the dust outlet device, a first gas outlet of the gas treatment device is communicated with a gas inlet of the ammonia spraying device, a gas outlet of the ammonia spraying device is communicated with the gas inlet flue, a second gas outlet of the gas treatment device is communicated with an inlet of the gas outlet flue, the first gas outlet and the second gas outlet are both located above the denitration device, and treated gas is discharged from an outlet of the gas outlet flue.
2. The integrated device for high-temperature denitration dedusting waste heat recovery as set forth in claim 1, is characterized in that: the ammonia spraying device comprises an ammonia water tank, a metering pump, an ammonia spraying pipeline and a return pipeline, a first end of the return pipeline is connected with the first gas outlet, a second end of the return pipeline is communicated with the gas inlet flue, a first end of the ammonia spraying pipeline is communicated with the ammonia water tank, a second end of the ammonia spraying pipeline is communicated with the return pipeline, and the metering pump is arranged on the ammonia spraying pipeline.
3. The integrated device for high-temperature denitration dedusting waste heat recovery as set forth in claim 2, is characterized in that: the second end of return line is connected with a plurality of ammonia injection grilles, every all be equipped with an adjusting valve on the ammonia injection grille, the ammonia injection grille is located in the flue that admits air, the second end of ammonia injection line is equipped with the shower nozzle, the shower nozzle is located in the return line.
4. The integrated device for high-temperature denitration dedusting waste heat recovery as set forth in claim 1, is characterized in that: the denitration device is a denitration catalyst, and the denitration catalyst is a honeycomb type catalyst.
5. The integrated device for high-temperature denitration dedusting waste heat recovery as set forth in claim 1, is characterized in that: the filter device is a metal fiber filter bag, and the metal fiber filter bag is a plurality of.
6. The integrated device for high-temperature denitration dedusting waste heat recovery as set forth in claim 1, is characterized in that: and a pulse soot blower is fixed between the denitration device and the filtering device.
7. The integrated device for high-temperature denitration dedusting waste heat recovery as set forth in claim 1, is characterized in that: the dust outlet device comprises an ash bucket, an electric tracing band and an electric valve, the electric tracing band is arranged on the ash bucket, the diameter of the ash bucket is gradually reduced from top to bottom, the lower end of the ash bucket is provided with the dust outlet, and the electric valve is fixed at the dust outlet.
8. The integrated device for high-temperature denitration dedusting waste heat recovery as set forth in claim 1, is characterized in that: and the flue gas treatment device is also provided with an access door.
9. The integrated device for high-temperature denitration dedusting waste heat recovery as set forth in claim 1, is characterized in that: a flow guide channel is arranged between the outlet of the air inlet flue and the air inlet of the flue gas treatment device, the first end of the flow guide channel is fixedly connected with the outlet of the air inlet flue, and the second end of the flow guide channel is fixedly connected with the air inlet of the flue gas treatment device; the cross-sectional area of the flow guide channel gradually increases along the direction from the first end to the second end of the flow guide channel.
10. The integrated device for high-temperature denitration dedusting waste heat recovery as set forth in claim 1, is characterized in that: and a mixer is arranged on the air inlet flue.
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| CN202023173068.XU CN214210062U (en) | 2020-12-25 | 2020-12-25 | High temperature denitration dust removal waste heat recovery integrated device |
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| CN202023173068.XU CN214210062U (en) | 2020-12-25 | 2020-12-25 | High temperature denitration dust removal waste heat recovery integrated device |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114887409A (en) * | 2022-04-26 | 2022-08-12 | 成都易态科技有限公司 | Method for efficiently combining waste heat utilization, dust removal and denitration of high-temperature flue gas |
| CN115155302A (en) * | 2022-06-20 | 2022-10-11 | 成都易态科技有限公司 | Treatment system and treatment method for furnace gas of fuming furnace |
| CN115307154A (en) * | 2022-06-29 | 2022-11-08 | 成都易态科技有限公司 | Method and device for purifying waste incineration flue gas |
| CN115301014A (en) * | 2022-06-30 | 2022-11-08 | 成都易态科技有限公司 | Cement raw meal grinds high temperature flue gas purification device and cement production system |
| CN115671910A (en) * | 2022-06-30 | 2023-02-03 | 成都易态科技有限公司 | High-temperature flue gas purification device of cement burning clinker cooling machine and cement production system |
| CN114887409B (en) * | 2022-04-26 | 2024-07-05 | 成都易态科技有限公司 | Method for efficiently combining high-temperature flue gas waste heat utilization, dust removal and denitration |
-
2020
- 2020-12-25 CN CN202023173068.XU patent/CN214210062U/en active Active
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114887409A (en) * | 2022-04-26 | 2022-08-12 | 成都易态科技有限公司 | Method for efficiently combining waste heat utilization, dust removal and denitration of high-temperature flue gas |
| CN114887409B (en) * | 2022-04-26 | 2024-07-05 | 成都易态科技有限公司 | Method for efficiently combining high-temperature flue gas waste heat utilization, dust removal and denitration |
| CN115155302A (en) * | 2022-06-20 | 2022-10-11 | 成都易态科技有限公司 | Treatment system and treatment method for furnace gas of fuming furnace |
| CN115155302B (en) * | 2022-06-20 | 2023-12-08 | 成都易态科技有限公司 | Treatment system and treatment method for fuming furnace gas |
| CN115307154A (en) * | 2022-06-29 | 2022-11-08 | 成都易态科技有限公司 | Method and device for purifying waste incineration flue gas |
| CN115301014A (en) * | 2022-06-30 | 2022-11-08 | 成都易态科技有限公司 | Cement raw meal grinds high temperature flue gas purification device and cement production system |
| CN115671910A (en) * | 2022-06-30 | 2023-02-03 | 成都易态科技有限公司 | High-temperature flue gas purification device of cement burning clinker cooling machine and cement production system |
| CN115301014B (en) * | 2022-06-30 | 2024-07-09 | 成都易态科技有限公司 | Cement raw material mill high temperature flue gas purification device and cement production system |
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