CN220939979U - Sintering flue gas denitration discharges and spouts ammonia equipment with accurate - Google Patents
Sintering flue gas denitration discharges and spouts ammonia equipment with accurate Download PDFInfo
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- CN220939979U CN220939979U CN202321066566.5U CN202321066566U CN220939979U CN 220939979 U CN220939979 U CN 220939979U CN 202321066566 U CN202321066566 U CN 202321066566U CN 220939979 U CN220939979 U CN 220939979U
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- ammonia spraying
- ammonia
- pipe
- hot
- distribution pipe
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- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 title claims abstract description 154
- 229910021529 ammonia Inorganic materials 0.000 title claims abstract description 75
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 33
- 239000003546 flue gas Substances 0.000 title claims abstract description 33
- 238000005245 sintering Methods 0.000 title claims abstract description 19
- 238000005507 spraying Methods 0.000 claims abstract description 64
- 238000009826 distribution Methods 0.000 claims abstract description 55
- 238000009434 installation Methods 0.000 claims description 15
- 239000000463 material Substances 0.000 claims description 8
- 239000007921 spray Substances 0.000 claims description 8
- 239000002184 metal Substances 0.000 claims description 6
- 239000012530 fluid Substances 0.000 claims description 3
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 abstract description 22
- 235000011114 ammonium hydroxide Nutrition 0.000 abstract description 22
- 239000012895 dilution Substances 0.000 abstract description 9
- 238000010790 dilution Methods 0.000 abstract description 9
- 230000001502 supplementing effect Effects 0.000 abstract 1
- 239000000243 solution Substances 0.000 description 14
- 230000001105 regulatory effect Effects 0.000 description 5
- 239000007789 gas Substances 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000009827 uniform distribution Methods 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- Treating Waste Gases (AREA)
- Chimneys And Flues (AREA)
Abstract
The utility model discloses accurate ammonia spraying equipment for denitration and emission of sintering flue gas, which comprises a hot blast stove body, wherein a connecting pipe is fixedly arranged at the tail part of the hot blast stove body, a hot blast stove outlet main flue is fixedly arranged at the right end of the connecting pipe, a mounting duct is fixedly arranged on the surface of the hot blast stove outlet main flue, an ammonia spraying component is fixedly arranged in the mounting duct, and a hot air distribution pipe branch pipe is fixedly arranged in the mounting duct. The hot air distribution pipes needed by the original hot air furnace for supplementing heat and the ammonia spraying grids needed by ammonia spraying are coupled together, only one hot air furnace outlet main flue is needed, the investment cost is lower, ammonia spraying is only needed by the ammonia spraying guns corresponding to the quantity of the hot air distribution pipe branch pipes, auxiliary equipment such as a dilution fan and an ammonia water evaporator is not needed, the investment cost is better, the structure is simpler, the ammonia water evaporator without steam is lower, the running cost is lower, the rotating equipment is less, and the failure rate is lower.
Description
Technical Field
The utility model relates to the technical field of sintering flue gas denitration, in particular to an accurate ammonia spraying device for sintering flue gas denitration emission.
Background
In the SCR denitration equipment commonly adopted at present in China, a horizontal/vertical hot blast stove is adopted as hot blast stove heating equipment, and then the hot blast stove heating equipment is arranged at an original gas outlet of the GGH through a hot blast distribution grid. The ammonia spraying device adopts a dilution fan to extract hot flue gas at the outlet of the reactor, then ammonia water is evaporated into ammonia gas through an ammonia water evaporator, and then the ammonia gas is uniformly sprayed into an inlet flue of the reactor through an ammonia spraying grid arranged behind a hot air distribution pipe to participate in denitration reaction.
In the prior art, the hot air uniform distribution equipment and the ammonia spraying equipment in the accurate ammonia spraying equipment for sintering flue gas denitration emission are two small equipment with little relevance, and both the two equipment have the requirement of achieving uniform distribution effect and need to respectively adopt the grids made of stainless steel materials. In addition, two dilution fans (one for one) are needed in the ammonia spraying equipment, and the running cost of the dilution fans is high. The dilution fan is rotary equipment, the extracted flue gas at the outlet of the denitration reactor has high moisture content, and condensate water is easy to generate, and the dilution fan is corroded, so that the equipment failure rate is high.
Disclosure of utility model
Based on the above description, the utility model provides an accurate ammonia spraying device for denitration and emission of sintering flue gas, which is used for solving the problems in the prior art.
The technical scheme for solving the technical problems is as follows:
The utility model provides a sintering flue gas denitration discharges and spouts ammonia equipment with accuracy, includes the hot-blast furnace body, the fixed connecting pipe that is provided with in hot-blast furnace body afterbody, the fixed hot-blast furnace export main flue that is provided with in right-hand member of connecting pipe, hot-blast furnace export main flue fixed surface is provided with the installation pipe, the inside fixed ammonia subassembly that spouts that is provided with of installation pipe, the inside fixed hot-blast distribution pipe branch pipe that is provided with of installation pipe, installation pipe surface is provided with denitration reactor entry flue subassembly.
On the basis of the technical scheme, the utility model can be improved as follows.
Preferably, the ammonia spraying assembly comprises an ammonia spraying gun arranged in the installation conduit, an installation tube is fixedly arranged on the surface of the ammonia spraying gun, an adapter is fixedly arranged on the installation tube, a connecting conduit is fixedly arranged in the adapter and the installation tube, and a metal rotameter and an adjusting valve are fixedly arranged on the connecting conduit.
Preferably, the denitration reactor inlet flue assembly comprises a denitration reactor inlet flue arranged on the surface of a main flue of an outlet of the hot blast stove, a distribution pipe supporting vertical beam is fixedly arranged in the denitration reactor inlet flue, a distribution pipe supporting cross beam is fixedly arranged on the front side of the distribution pipe supporting vertical beam, and the distribution pipe supporting cross beam is fixedly connected with a hot blast distribution pipe branch pipe.
Preferably, the nozzle of the ammonia spraying gun is of an L-shaped structure, the ammonia spraying gun is a double-fluid spraying gun, and the ammonia spraying gun is made of 310S materials.
Preferably, the hot air distribution pipe branch pipe is made of 310S material, and the pipe diameter of the hot air distribution pipe branch pipe is sequentially reduced along the flue gas flow direction.
Preferably, the number of the hot air distribution pipe branch pipes is multiple, and the hot air distribution pipe branch pipes are all positioned on the same horizontal plane.
Compared with the prior art, the technical scheme of the application has the following beneficial technical effects:
this sintering flue gas denitration discharges with accurate ammonia spraying equipment, with hot-blast distribution pipe and the ammonia spraying grid coupling that spouts ammonia needs that the hot-blast stove complemented the heat needs originally together, only need a hot-blast furnace export main flue can, lower from investment cost, wherein spout ammonia only need with the ammonia spraying gun that spouts that corresponds hot-blast distribution pipe branch pipe quantity can, no longer need accessory equipment such as dilution fan, ammonia water evaporimeter, investment cost is superior, structurally simpler, and does not adopt the ammonia water evaporimeter of steam, running cost is lower, and rotation equipment has been reduced, the fault rate is lower.
Drawings
FIG. 1 is an isometric view of a structure of the present utility model;
FIG. 2 is a schematic structural view of an inlet flue assembly of a denitration reactor with the structure of the utility model;
FIG. 3 is a schematic view of a partial structure of the present utility model;
FIG. 4 is a schematic diagram of an ammonia spraying assembly according to the present utility model.
In the drawings, the list of components represented by the various numbers is as follows:
1. A hot blast stove body; 2. a connecting pipe; 3. a main flue at the outlet of the hot blast stove; 4. a lance sleeve; 5. an ammonia spraying gun; 6. a spray gun atomizer; 7. a connecting conduit; 8. a metal rotameter; 9. adjusting a valve; 10. a hot air distribution pipe branch pipe; 11. an inlet flue of the denitration reactor; 12. the distribution pipes support the vertical beams; 13. the distribution pipe supports the cross beam; 14. the catheter is installed.
Detailed Description
In order that the application may be readily understood, a more complete description of the application will be rendered by reference to the appended drawings. Embodiments of the application are illustrated in the accompanying drawings. This application may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.
It will be appreciated that spatially relative terms such as "under …," "under …," "under …," "over …," "over" and the like may be used herein to describe one element or feature's relationship to another element or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use and operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements or features described as "under" or "beneath" other elements would then be oriented "on" the other elements or features. Thus, the exemplary terms "below …" and "under …" may include both an upper and a lower orientation. Furthermore, the device may also include an additional orientation (e.g., rotated 90 degrees or other orientations) and the spatial descriptors used herein interpreted accordingly.
Referring to fig. 1-4, an accurate ammonia spraying device for sintering flue gas denitration emission comprises a hot blast stove body 1, a connecting pipe 2 is fixedly arranged at the tail part of the hot blast stove body 1, a hot blast stove outlet main flue 3 is fixedly arranged at the right end of the connecting pipe 2, a mounting duct 14 is fixedly arranged on the surface of the hot blast stove outlet main flue 3, an ammonia spraying component is fixedly arranged in the mounting duct 14, the ammonia spraying component comprises an ammonia spraying gun 5 arranged in the mounting duct 14, the nozzle of the ammonia spraying gun 5 is of an L-shaped structure, the ammonia spraying gun 5 is a double-fluid spraying gun, the ammonia spraying gun 5 is made of 310S materials, the ammonia spraying gun 5 can spray ammonia water solution along the flue gas direction by bending the nozzle of the ammonia spraying gun 5 by ninety degrees along the flue gas direction, a spray gun atomizer 6 is arranged at the tail part of the ammonia spraying gun 5, the spray gun atomizer 6 and the ammonia spraying gun 5 are fixedly provided with connecting pipes 7, the connecting pipes 7 are fixedly provided with metal rotor flowmeters 8 and regulating valves 9, 20% concentration ammonia water solution is added into the ammonia spraying gun 5 through mounting pipes 7, the amount of the ammonia water solution is metered through the metal rotor flowmeters 8, the ammonia water solution is regulated through the regulating valves 9, the ammonia water solution is uniformly distributed into the ammonia spraying gun 5 at the mounting pipes 14, the ammonia water solution is sprayed into each hot air distribution pipe branch pipe 10 after being atomized through the ammonia spraying gun 5, the ammonia water solution is conveniently added into the hot air distribution pipe branch pipes 10, the hot air distribution pipe branch pipes 10 are fixedly provided with hot air distribution pipe branch pipes 10 inside the mounting pipes 14, the hot air distribution pipe branch pipes 10 are made of 310S materials, the pipe diameters of the hot air distribution pipe branch pipes 10 are sequentially reduced along the flue gas flow direction, the pipe diameter sequentially becomes smaller along the flow direction of the flue gas, so that the flue gas can be uniformly distributed in each pipe orifice of the hot air distribution pipe branch pipes 10, the hot air distribution pipe branch pipes 10 can resist the high temperature of eight hundred degrees to one thousand degrees by 310S materials, the quantity of the hot air distribution pipe branch pipes 10 is multiple, the hot air distribution pipe branch pipes 10 are all positioned on the same horizontal plane, the surface of the installation conduit 14 is provided with a denitration reactor inlet flue assembly, the denitration reactor inlet flue assembly comprises a denitration reactor inlet flue 11 arranged on the surface of the main flue 3 of the hot blast stove outlet, a distribution pipe supporting vertical beam 12 is fixedly arranged in the denitration reactor inlet flue 11, a distribution pipe supporting beam 13 is fixedly arranged at the front side of the distribution pipe supporting vertical beam 12, the distribution pipe supporting beam 13 is fixedly connected with the hot air distribution pipe branch pipes 10, each hot air distribution pipe branch pipe 10 is uniformly distributed in the middle of a denitration reactor inlet flue 11 through a distribution pipe supporting vertical beam 12 and a distribution pipe supporting beam 13, and the sintering flue gas denitration emission is with accurate ammonia spraying equipment, so that the hot air distribution pipe which is originally required by hot air furnace heat compensation and the ammonia spraying grid which is required by ammonia spraying are coupled together, only one hot air furnace outlet main flue 3 is needed, the investment cost is lower, the ammonia spraying only needs to use ammonia spraying guns 5 which correspond to the quantity of the hot air distribution pipe branch pipes 10, no auxiliary equipment such as a dilution fan, an ammonia evaporator and the like is needed, the investment cost is better, the structure is simpler, the ammonia evaporator without adopting steam is lower, the running cost is lower, the rotating equipment is less, and the fault rate is lower.
The sintering flue gas denitration emission is connected with 220V mains supply through the accurate ammonia spraying equipment, and the main controller can be conventional known equipment such as a computer for controlling.
When in use: the ammonia water solution with the concentration of 20% is added into the ammonia spraying gun 5 through the mounting pipe 7, the amount of the ammonia water solution is measured through the metal rotameter 8, the ammonia water solution is regulated through the regulating valve 9, the ammonia water solution is uniformly distributed into the ammonia spraying gun 5 at the mounting pipe 14, the ammonia water solution is sprayed into each hot air distribution pipe branch pipe 10 after being atomized through the ammonia spraying gun 5, the ammonia water solution is mixed with the flue gas with the temperature of eight hundred degrees to one thousand degrees in the hot air distribution pipe branch pipes 10, the ammonia water solution is vaporized into ammonia gas and flue gas mixed gas instantly by utilizing the high temperature of the flue gas, and the ammonia gas and flue gas mixed gas are uniformly distributed into the inlet flue 11 of the denitration reactor to be mixed with raw flue gas which is not subjected to denitration through the hot air distribution pipe branch pipes 10, and finally, the denitration reaction is performed through other conventional denitration facilities such as a static mixer, a rectification grid and a reactor catalyst.
In summary, this sintering flue gas denitration discharges with accurate ammonia spraying equipment, with hot-blast distribution pipe and the ammonia spraying grid that spouts ammonia needs that the hot-blast furnace concurrent heating needs originally are in the same place, only need a hot-blast furnace export main flue 3 can, lower from investment cost, wherein spout ammonia only need with spout ammonia spray gun 5 that corresponds hot-blast distribution pipe branch pipe 10 quantity can, no longer need accessory equipment such as dilution fan, ammonia water evaporator, investment cost is better, structurally simpler, and the ammonia water evaporator of not adopting steam, running cost is lower, and rotating equipment has been reduced, the fault rate is lower, be used for solving the problem that the above-mentioned background art presented.
The foregoing description of the preferred embodiments of the utility model is not intended to limit the utility model to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and scope of the utility model are intended to be included within the scope of the utility model.
Claims (6)
1. The utility model provides a sintering flue gas denitration discharges and spouts ammonia equipment with accuracy, includes hot-blast furnace body (1), its characterized in that, hot-blast furnace body (1) afterbody is fixed to be provided with connecting pipe (2), the fixed hot-blast furnace export main flue (3) that are provided with in right-hand member of connecting pipe (2), hot-blast furnace export main flue (3) fixed surface is provided with installation pipe (14), installation pipe (14) inside is fixed and is provided with spouts the ammonia subassembly, installation pipe (14) inside is fixed and is provided with hot-blast distribution pipe branch pipe (10), installation pipe (14) surface is provided with denitration reactor entry flue subassembly.
2. The sintering flue gas denitration discharges and uses accurate ammonia spraying equipment according to claim 1, characterized in that, spout ammonia subassembly including setting up in the inside ammonia spraying gun (5) of installation pipe (14), ammonia spraying gun (5) are fixed on installation pipe (14) surface through spray gun sleeve pipe (4), ammonia spraying gun (5) afterbody is provided with spray gun atomizer (6), spray gun atomizer (6) and the inside of ammonia spraying gun (5) are all fixed and are provided with connecting pipe (7), fixedly on connecting pipe (7) are provided with metal rotameter (8) and governing valve (9).
3. The precise ammonia spraying device for sintering flue gas denitration emission according to claim 1, wherein the denitration reactor inlet flue assembly comprises a denitration reactor inlet flue (11) arranged on the surface of a main flue (3) of a hot blast stove outlet, a distribution pipe supporting vertical beam (12) is fixedly arranged in the denitration reactor inlet flue (11), a distribution pipe supporting cross beam (13) is fixedly arranged on the front side of the distribution pipe supporting vertical beam (12), and the distribution pipe supporting cross beam (13) is fixedly connected with a hot blast distribution pipe branch pipe (10).
4. The precise ammonia spraying device for sintering flue gas denitration emission according to claim 2, wherein the nozzle of the ammonia spraying gun (5) is of an L-shaped structure, the ammonia spraying gun (5) is a double-fluid spraying gun, and the ammonia spraying gun (5) is made of 310S materials.
5. The precise ammonia spraying device for denitration and emission of sintering flue gas according to claim 1, wherein the hot air distribution pipe branch pipe (10) is made of 310S material, and the pipe diameter of the hot air distribution pipe branch pipe (10) is sequentially reduced along the flue gas flow direction.
6. The precise ammonia spraying device for denitration emission of sintering flue gas according to claim 1, wherein the number of the hot air distribution pipe branch pipes (10) is plural, and the plurality of the hot air distribution pipe branch pipes (10) are all positioned on the same horizontal plane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321066566.5U CN220939979U (en) | 2023-04-30 | 2023-04-30 | Sintering flue gas denitration discharges and spouts ammonia equipment with accurate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321066566.5U CN220939979U (en) | 2023-04-30 | 2023-04-30 | Sintering flue gas denitration discharges and spouts ammonia equipment with accurate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220939979U true CN220939979U (en) | 2024-05-14 |
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ID=91016313
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321066566.5U Active CN220939979U (en) | 2023-04-30 | 2023-04-30 | Sintering flue gas denitration discharges and spouts ammonia equipment with accurate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220939979U (en) |
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2023
- 2023-04-30 CN CN202321066566.5U patent/CN220939979U/en active Active
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