CN218281269U - Cement kiln SCR denitration reaction device - Google Patents
Cement kiln SCR denitration reaction device Download PDFInfo
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- CN218281269U CN218281269U CN202221761294.6U CN202221761294U CN218281269U CN 218281269 U CN218281269 U CN 218281269U CN 202221761294 U CN202221761294 U CN 202221761294U CN 218281269 U CN218281269 U CN 218281269U
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Abstract
The utility model relates to the technical field of flue gas denitration, and provides a cement kiln SCR denitration reaction device, wherein an air inlet of a first flue gas channel is communicated with an air outlet of a preheater flue, an air inlet of a second flue gas channel is communicated with an air outlet of the first flue gas channel, an air inlet of an SCR reactor is communicated with an air outlet of the second flue gas channel, an air inlet of a third flue gas channel is communicated with an air outlet of an SCR reactor, and an air inlet of a fourth flue gas channel is communicated with an air outlet of the third flue gas channel to construct a flue gas circulation channel; the cross section of the second flue gas channel is gradually increased along the direction of the flue gas circulation channel; the first diversion piece is arranged at the intersection of the second flue gas channel and the first flue gas channel, the second diversion piece is arranged at the intersection of the SCR reactor and the second flue gas channel, and the cement kiln SCR denitration reaction device can enable flue gas flow lines to enter the SCR reactor more smoothly and can be fully mixed with ammonia gas in the flue gas flow lines, so that the denitration efficiency is improved.
Description
Technical Field
The utility model relates to a flue gas denitration technical field especially relates to a cement kiln SCR denitration reaction device.
Background
Under the background that the current environmental protection policy is increasingly tightened, 100mg/Nm is provided for NOx emission in the cement industry 3 Even 50mg/Nm 3 Ultra-low emission requirements. The existing low-nitrogen combustor technology, the decomposing furnace staged combustion technology and the SNCR denitration technology are difficult to meet the emission requirement, and a Selective Catalytic Reduction (SCR) method is an efficient flue gas denitration technology, and the SCR denitration technology has efficient denitration efficiency and smaller ammonia escape characteristic.
Aiming at the SCR denitration technology, an SCR reactor is a core device, the flow field uniform distribution condition of the reactor is a key influence factor of the denitration efficiency, and the cement flue gas components are complex, the dust concentration is high, and the flue gas amount is large, so that the flue gas of a cement kiln denitration reactor system is not easy to uniformly distribute, and the pressure loss of the system is large. Therefore, one of the problems that how to improve the uniformity of the flow field of the reactor and reduce the resistance loss of the system is urgently needed to be solved is the SCR denitration system for treating the cement flue gas.
SUMMERY OF THE UTILITY MODEL
The utility model provides a cement kiln SCR denitration reaction device for solve the difficult equipartition of cement kiln denitration reaction device flue gas in prior art, the defect of denitration inefficiency.
The utility model provides a cement kiln SCR denitration reaction device, include: the device comprises a first flue gas channel, a second flue gas channel, an SCR (selective catalytic reduction) reactor, a third flue gas channel, a fourth flue gas channel, a first flow guide piece and a second flow guide piece;
the gas inlet of the first flue gas channel is used for being communicated with the gas outlet of a preheater flue, the gas inlet of the second flue gas channel is communicated with the gas outlet of the first flue gas channel, the gas inlet of the SCR reactor is communicated with the gas outlet of the second flue gas channel, the gas inlet of the third flue gas channel is communicated with the gas outlet of the SCR reactor, and the gas inlet of the fourth flue gas channel is communicated with the gas outlet of the third flue gas channel so as to form a flue gas circulation channel; wherein the cross section of the second flue gas channel gradually increases along the direction of the flue gas flow channel;
the first diversion piece is arranged at the intersection of the second flue gas channel and the first flue gas channel, and the second diversion piece is arranged at the intersection of the SCR reactor and the second flue gas channel.
According to the cement kiln SCR denitration reaction device provided by the utility model, the first guide piece comprises a first guide plate and a second guide plate;
the first guide plate is connected to the inner wall side of the junction of the second flue gas channel and the first flue gas channel along a first direction; the second guide plate is connected to the inner wall side of the intersection of the second flue gas channel and the first flue gas channel along a second direction;
wherein the first direction is perpendicular to the second direction.
According to the cement kiln SCR denitration reaction device provided by the utility model, the first guide plate and the second guide plate are both provided with a plurality of guide plates;
the first guide plates are sequentially arranged along the first direction at intervals, the second guide plates are sequentially arranged along the second direction at intervals, and the first guide plates and the second guide plates are arranged in a crossed mode to form a grid structure.
According to the cement kiln SCR denitration reaction device provided by the utility model, the first guide plate and the second guide plate have the same structure and both comprise the first connecting plate and the second connecting plate;
the first connecting plate with the second connecting plate is the contained angle and connects, wherein, first connecting plate is followed first flue gas passageway's axis direction is located in the first flue gas passageway, the second connecting plate is located in the second flue gas passageway.
According to the utility model provides a cement kiln SCR denitration reaction device, first connecting plate with the contained angle of second connecting plate is 130 ~ 180.
According to the utility model provides a cement kiln SCR denitration reaction device, the second water conservancy diversion spare is the perforated plate.
According to the utility model provides a cement kiln SCR denitration reaction device, be equipped with the catalyst bed in the SCR reactor, the catalyst bed along perpendicular flue gas circulation direction connect in the inner wall side of SCR reactor.
According to the utility model provides a cement kiln SCR denitration reaction device, the catalyst bed is a plurality of, and is a plurality of the catalyst bed is followed the flue gas circulation direction is laid in proper order in the SCR reactor.
According to the utility model provides a cement kiln SCR denitration reaction unit, cement kiln SCR denitration reaction unit still includes the ash bucket, the ash bucket connect in the bottom of SCR reactor lower part third flue gas passageway.
According to the utility model provides a cement kiln SCR denitration reaction device, fourth flue gas passageway is single-pipe flue, just single-pipe flue's cross section is followed the flue gas circulation direction reduces gradually.
The utility model provides a cement kiln SCR denitration reaction unit, first flue gas passageway, second flue gas passageway, the SCR reactor, the air inlet and the gas outlet of third flue gas passageway and fourth flue gas passageway form the passageway that supplies the flue gas circulation end to end in proper order, wherein, be equipped with first water conservancy diversion spare at the intersection of second flue gas passageway and first flue gas passageway, be equipped with second water conservancy diversion spare subassembly at the intersection of SCR reactor and second flue gas passageway, in order to form two-layer flow equalization layer, and the direction crescent along the flue gas circulation passageway of cross section of second flue gas passageway, in order to form flaring water conservancy diversion structure, thereby the degree of consistency in the flue gas flow field that gets into the SCR reactor has been guaranteed, flue gas flow line can get into the SCR reactor more smoothly, can the intensive mixing with ammonia wherein, the denitration efficiency is improved, so that the flue gas that cement kiln SCR denitration reaction unit discharges can accord with the emission standard requirement better.
Drawings
In order to more clearly illustrate the technical solutions of the present invention or the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are 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 a cement kiln SCR denitration reaction device provided by the embodiment of the invention in front view;
FIG. 2 is a schematic side view of a cement kiln SCR denitration reactor provided by an embodiment of the present invention;
FIG. 3 is an enlarged schematic view at A in FIG. 1;
FIG. 4 is an enlarged schematic view at A in FIG. 2;
fig. 5 is a schematic structural diagram of a first baffle provided in an embodiment of the present invention;
fig. 6 is a schematic structural view of a second flow guiding member according to an embodiment of the present invention;
reference numerals:
1: a first flue gas channel; 2: a second flue gas channel; 3: an SCR reactor; 31: a catalyst bed layer; 4: a third flue gas channel; 5: a fourth flue gas channel; 6: a first flow guide member; 61: a first baffle; 62: a second baffle; 63: a first connecting plate; 64, a second connecting plate; 7: a second flow guide member; 71: a through hole; 8: an ash hopper; a: a first included angle; b: and a second included angle.
Detailed Description
To make the objects, technical solutions and advantages of the present invention clearer, the drawings of the present invention are combined to clearly and completely describe the technical solutions of the present invention, and obviously, the described embodiments are 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 efforts belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "first", "second", "third" and "fourth" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the embodiments of the present invention, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only used for convenience of description and simplification of the description of the embodiments of the present invention, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the embodiments of the present invention.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "provided with", "connected", and the like are to be construed broadly, and for example, "connected" may be a fixed connection, a detachable connection, or an integral connection; can be mechanically or electrically connected; either directly or indirectly through intervening media, or through the communication between two elements. The specific meaning of the above terms in the present invention can be understood as appropriate by those of ordinary skill in the art.
In the description of the present specification, references to the description of "one embodiment," "some embodiments," "an example," "a specific example," or "some examples" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the embodiments of the present invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Moreover, various embodiments or examples and features of various embodiments or examples described in this specification can be combined and combined by one skilled in the art without being mutually inconsistent.
The following describes the cement kiln SCR denitration reaction device provided by the present invention with reference to FIGS. 1 to 6, and describes embodiments of the present invention. It should be understood that the following description is only exemplary of the present invention and is not intended to limit the present invention.
The embodiment of the utility model provides a cement kiln SCR denitration reaction device, as shown in figure 1 and figure 2, this cement kiln SCR denitration reaction device includes: the device comprises a first flue gas channel 1, a second flue gas channel 2, an SCR reactor 3, a third flue gas channel 4, a fourth flue gas channel 5, a first flow guide part 6 and a second flow guide part 7.
The air inlet of the first flue gas channel 1 is used for being communicated with the air outlet of a preheater flue, the air inlet of the second flue gas channel 2 is communicated with the air outlet of the first flue gas channel 1, the air inlet of the SCR reactor 3 is communicated with the air outlet of the second flue gas channel 2, the air inlet of the third flue gas channel 4 is communicated with the air outlet of the SCR reactor 3, and the air inlet of the fourth flue gas channel 5 is communicated with the air outlet of the third flue gas channel 4 so as to form a flue gas circulation channel; wherein the cross section of the second flue gas channel 2 is gradually increased along the direction of the flue gas flow channel.
The first flow guide part 6 is arranged at the intersection of the second flue gas channel 2 and the first flue gas channel 1, and the second flow guide part 7 is arranged at the intersection of the SCR reactor 3 and the second flue gas channel 2.
Specifically, in actual operation, the embodiment of the utility model provides a cement kiln SCR denitration reaction device generally places for vertical, as shown in fig. 1, first flue gas passageway 1, second flue gas passageway 2, SCR reactor 3, third flue gas passageway 4 and fourth flue gas passageway 5 from last to intercommunication in proper order down to form the flue gas circulation passageway that supplies the flue gas circulation.
Wherein, the top of the first flue gas channel 1 is communicated with the gas outlet of the preheater flue.
And a first flow guide part 6 and a second flow guide part 7 which correspond to each other are respectively arranged at the intersection of the second flue gas channel 2 and the first flue gas channel 1 and the intersection of the SCR reactor 3 and the second flue gas channel 2 so as to equalize the flow of the flue gas.
As shown in fig. 1, the second flue gas channel 2 is an open structure, and is connected between the first flue gas channel 1 and the SCR reactor 3, and the upper port is narrow, and the lower port is wide, so that the pressure of the gas entering the SCR reactor 3 can be reduced, and the stability and safety of the state can be improved.
The embodiment of the utility model provides a cement kiln SCR denitration reaction unit is by first flue gas passageway 1, second flue gas passageway 2, SCR reactor 3, the air inlet and the gas outlet of third flue gas passageway 4 and fourth flue gas passageway 5 end to end connection form the passageway that supplies the flue gas circulation in proper order, wherein, be equipped with first guiding member 6 in second flue gas passageway 2 and first flue gas passageway 1's intersection, be equipped with second guiding member 7 subassembly in SCR reactor 3 and second flue gas passageway 2's intersection, in order to form two-layer laminar uniform flow layer, and the direction crescent along the flue gas circulation passageway of second flue gas passageway 2's cross section, in order to form flaring water conservancy diversion structure, thereby the degree of consistency of the flow field flue gas that has guaranteed to get into SCR reactor 3, flue gas flow line can get into in SCR reactor 3 more smoothly, ammonia wherein can the intensive mixing, the denitration efficiency has been improved, so that the flue gas that discharges through cement kiln SCR denitration reaction unit can accord with nitrogen oxide emission standard requirement better.
In an alternative embodiment, the first baffle 6 comprises a first baffle 61 and a second baffle 62.
The first guide plate 61 is connected to the inner wall side of the intersection of the second flue gas channel 2 and the first flue gas channel 1 along the first direction; the second deflector 62 is connected to the inner wall side at the intersection of the second flue gas channel 2 and the first flue gas channel 1 in the second direction.
Wherein the first direction is perpendicular to the second direction.
Specifically, as shown in fig. 1 and fig. 2, the first flow guide member 6 located at the intersection of the second flue gas channel 2 and the first flue gas channel 1 is composed of a first flow guide plate 61 and a second flow guide plate 62, wherein as shown in fig. 3, the first flow guide plate 61 is connected to the front and rear inner wall surfaces of the intersection of the second flue gas channel 2 and the first flue gas channel 1, as shown in fig. 4, the second flow guide plate 62 is connected to the left and right inner wall surfaces of the intersection of the second flue gas channel 2 and the first flue gas channel 1, and the first flow guide plate 61 and the second flow guide plate 62 are arranged in a vertical crossing manner on the same horizontal plane.
Further, as shown in fig. 3 and 4, each of the first baffle 61 and the second baffle 62 is plural.
The plurality of first guide plates 61 are arranged at intervals in sequence along the first direction, the plurality of second guide plates 62 are arranged at intervals in sequence along the second direction, and the plurality of first guide plates 61 and the plurality of second guide plates 62 are arranged in a crossed manner to form a grid-shaped structure.
In an alternative embodiment, the first baffle 61 and the second baffle 62 are identical in structure and each include a first connecting plate 63 and a second connecting plate 64.
The first connecting plate 63 and the second connecting plate 64 are connected at an included angle, wherein the first connecting plate 63 is arranged in the first flue gas channel 1 along the axial direction of the first flue gas channel 1, and the second connecting plate 64 is arranged in the second flue gas channel 2.
Specifically, as shown in fig. 5, the deflector is composed of a first connection plate 63 and a second connection plate 64, the first connection plate 63 and the second connection plate 64 being different in length, the first connection plate 63 being shorter than the second connection plate 64, the first connection plate 63 being located in the first flue gas channel 1, the second connection plate 64 being located in the second flue gas channel 2.
The height dimension (namely the smoke flowing direction) of the first connecting plate 63 can be 100 mm-250 mm, the width of the first connecting plate is matched with the depth dimension of the smoke channel in the corresponding direction, and the first connecting plate can be fixedly connected to the inner wall surface of the first smoke channel 1.
The second connecting plate 64 can be connected to one end of the first connecting plate 63 along the extending direction of the first connecting plate 63, and can also be connected to the first connecting plate 63 in a bending manner, the vertical height dimension (namely, the smoke flowing direction) of the second connecting plate 64 can be 350 mm-600 mm, the width of the second connecting plate 64 is matched with the depth dimension of the smoke channel in the corresponding direction, and the second connecting plate can be fixedly connected to the inner wall surface of the second smoke channel 2.
In the case where the number of the baffles is plural, the interval between the adjacent first connection plates 63 is 250mm to 400mm.
The specific dimensions of the first connecting plate 63 and the second connecting plate 64 are not limited, and may be set according to actual needs.
In an alternative embodiment, the first link plate 63 is angled at an angle of 130 ° to 180 ° with respect to the second link plate 64.
Specifically, when the second connecting plate 64 is connected to one end of the first connecting plate 63 in a bending manner, as shown in fig. 5, an angle of a first included angle a formed between the first connecting plate 63 and the second connecting plate 64 is 130 ° to 180 °, and correspondingly, an angle of a second included angle b formed between the second connecting plate 64 and the center line of the second flue gas channel 2 is 0 ° to 50 °.
In addition, from the center of the flue to the left and right sides, the angles of the second connecting plates 64 gradually increase in a transitional manner as the distance from the center line increases, and the specific transitional angle is determined according to the actual expansion angle of the second flue gas channel 2, which is not specifically limited herein.
In an alternative embodiment, as shown in fig. 6, the second flow guide 7 is a perforated plate.
Specifically, second water conservancy diversion piece 7 is located second flue gas channel 2's gas outlet department, is located SCR reactor 3's air inlet promptly, sets up it at the air inlet, can ensure that the flue gas after second water conservancy diversion piece 7 has sufficient time to carry out the streamline and comb to improve its effect of flow equalizing.
In order to ensure the passing property of the flue gas, the second flow guide member 7 is a porous plate, as shown in fig. 6, the through hole 71 can be a circular hole with a diameter of 200mm to 500mm, the clear distance between the holes is 40mm to 100mm, the through hole rate on the whole second flow guide plate 62 is 50% to 70%, the specific hole diameter and the through hole rate are not limited, the through hole can be circular, square or other shapes, the shape of the through hole is not specifically limited, and the through hole can be set according to the actual engineering condition.
The utility model provides a water conservancy diversion interval that first water conservancy diversion spare 6 among the cement kiln SCR denitration reaction device formed is great, and the through-hole rate of second water conservancy diversion spare 7 is great, and consequently, the local pressure loss that corresponds is lower, and then has reduced cement kiln SCR denitration reaction device's total loss of pressure, has reduced the input cost of device, has improved the device stability and the security in operation.
In an alternative embodiment, a catalyst bed 31 is provided in the SCR reactor 3, and the catalyst bed 31 is connected to the inner wall side of the SCR reactor 3 in the vertical flue gas flow direction.
Further, a plurality of catalyst bed layers 31 are provided, and the plurality of catalyst bed layers 31 are sequentially arranged in the SCR reactor 3 along the flue gas flow direction.
Specifically, as shown in fig. 1 and fig. 2, a plurality of catalyst beds 31 are arranged in the SCR reactor 3, for example, the number of the catalyst beds 31 is 4 to 6 (in the incoming flow direction of the flue gas, the front is an application layer, and the rear is a spare layer), and generally, the SCR reactor includes 1 to 2 reserved layers, the reserved layers are located at the lower part, and the specific number of the layers is determined according to actual engineering design conditions such as the amount of the treated flue gas and the concentration of nitrogen oxides in the flue gas.
Wherein, the distance between the catalyst bed layers 31 is 1600-2500 mm, which is determined according to the structure size of the actual SCR reactor 3.
Particularly, the distance between the first catalyst bed layer 31 in the SCR reactor 3 and the second flow guide member 7 is at least 1800 mm-2500 mm, so that the flue gas after flow equalization by the second flow guide member 7 has sufficient time and space for streamline alignment, the specific distance is not limited, and the specific distance is determined according to the actual reactor structure and engineering conditions.
In an alternative embodiment, the cement kiln SCR denitration reactor further includes an ash hopper 8, and the ash hopper 8 is connected to the bottom of the third flue gas channel 4.
Specifically, as shown in fig. 1, the bottom of the third flue gas channel 4 is further provided with 1-4 ash hoppers 8, and the number of the ash hoppers 8 is specifically determined according to the actual reaction device structure and engineering.
The effect that sets up ash bucket 8 is that the deposition that carries in the flue gas can fall into in the ash bucket 8 of flue below under the action of gravity to collect the deposition, in order to avoid the deposition to influence the normal circulation of flue gas.
In an alternative embodiment, the fourth flue gas channel 5 is a single-pipe flue, and the cross section of the single-pipe flue gradually decreases along the flue gas flowing direction.
Specifically, as shown in fig. 2, the fourth flue gas channel 5 is an outlet flue, and adopts a single-pipe flue structure, and compared with the conventional "two-pipe converging type" or "multi-pipe converging type" in the prior art, the cross section of the single-pipe flue is gradually reduced along the flue gas flowing direction, that is, the single-pipe flue has a tapered local structure, so that the flue gas flow can smoothly flow from the large-size flue to the small-size flue, thereby satisfying the flow field uniformity, reducing the local resistance loss of the fluid, and reducing the total pressure drop of the system.
According to the simulation analysis contrast of FLUENT numerical simulation software of utilizing, under the condition of same amount of flue gas, the utility model provides a single tube flue's loss of pressure is than traditional two manifold box-like, and loss of pressure reduces to 150-200Pa.
The utility model provides a cement kiln SCR denitration reactor device has not only realized the design device simple structure, and the preparation technology is easy, and denitration reactor flow field has better homogeneity moreover, can satisfy denitration designing requirement better, and simultaneously, whole denitration loss of pressure is less, can reduce the denitration cost.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.
Claims (10)
1. The utility model provides a cement kiln SCR denitration reaction device which characterized in that includes: the device comprises a first flue gas channel, a second flue gas channel, an SCR (selective catalytic reduction) reactor, a third flue gas channel, a fourth flue gas channel, a first flow guide piece and a second flow guide piece;
the gas inlet of the first flue gas channel is used for being communicated with the gas outlet of a preheater flue, the gas inlet of the second flue gas channel is communicated with the gas outlet of the first flue gas channel, the gas inlet of the SCR reactor is communicated with the gas outlet of the second flue gas channel, the gas inlet of the third flue gas channel is communicated with the gas outlet of the SCR reactor, and the gas inlet of the fourth flue gas channel is communicated with the gas outlet of the third flue gas channel so as to form a flue gas circulation channel; wherein the cross section of the second flue gas channel gradually increases along the direction of the flue gas flow channel;
the first flow guide piece is arranged at the intersection of the second flue gas channel and the first flue gas channel, and the second flow guide piece is arranged at the intersection of the SCR reactor and the second flue gas channel.
2. The cement kiln SCR denitration reactor of claim 1, wherein the first flow guide comprises a first flow guide plate and a second flow guide plate;
the first guide plate is connected to the inner wall side of the junction of the second flue gas channel and the first flue gas channel along a first direction; the second guide plate is connected to the inner wall side of the intersection of the second flue gas channel and the first flue gas channel along a second direction;
wherein the first direction is perpendicular to the second direction.
3. The cement kiln SCR denitration reactor of claim 2, wherein the first deflector and the second deflector are both plural;
the first guide plates are sequentially arranged along the first direction at intervals, the second guide plates are sequentially arranged along the second direction at intervals, and the first guide plates and the second guide plates are arranged in a crossed mode to form a grid structure.
4. The cement kiln SCR denitration reaction device of claim 3, wherein the first guide plate and the second guide plate are identical in structure and comprise a first connecting plate and a second connecting plate;
the first connecting plate and the second connecting plate are connected in an included angle mode, the first connecting plate is arranged in the first smoke channel along the axis direction of the first smoke channel, and the second connecting plate is arranged in the second smoke channel.
5. The cement kiln SCR denitration reactor of claim 4, wherein an included angle between the first connecting plate and the second connecting plate is 130-180 °.
6. The cement kiln SCR denitration reactor of claim 1, wherein the second flow guide member is a perforated plate.
7. The cement kiln SCR denitration reaction device of claim 1, wherein a catalyst bed is arranged in the SCR reactor, and the catalyst bed is connected to the inner wall side of the SCR reactor along a vertical flue gas circulation direction.
8. The cement kiln SCR denitration reaction device of claim 7, wherein the number of the catalyst beds is plural, and the plural catalyst beds are sequentially arranged in the SCR reactor along the flow direction of the flue gas.
9. The cement kiln SCR denitration reaction device of claim 1, further comprising an ash hopper connected to the bottom of the third flue gas channel.
10. The cement kiln SCR denitration reaction device of claim 1, wherein the fourth flue gas channel is a single-pipe flue, and the cross section of the single-pipe flue gradually decreases along the flue gas flowing direction.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221761294.6U CN218281269U (en) | 2022-07-08 | 2022-07-08 | Cement kiln SCR denitration reaction device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221761294.6U CN218281269U (en) | 2022-07-08 | 2022-07-08 | Cement kiln SCR denitration reaction device |
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| CN218281269U true CN218281269U (en) | 2023-01-13 |
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| CN202221761294.6U Active CN218281269U (en) | 2022-07-08 | 2022-07-08 | Cement kiln SCR denitration reaction device |
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