CN217988928U - SCR denitration spray gun system and SCR denitration system - Google Patents
SCR denitration spray gun system and SCR denitration system Download PDFInfo
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- CN217988928U CN217988928U CN202221976894.4U CN202221976894U CN217988928U CN 217988928 U CN217988928 U CN 217988928U CN 202221976894 U CN202221976894 U CN 202221976894U CN 217988928 U CN217988928 U CN 217988928U
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Abstract
The utility model discloses a SCR denitration spray gun system and SCR deNOx systems, SCR denitration spray gun system includes a plurality of spray guns, and in the one end of spray gun was suitable for stretching into the flue, a plurality of spray gun interval arrangement, a plurality of spray guns divide into a plurality of injection districts, and a plurality of injection districts are along the circumference interval arrangement of flue. The utility model discloses a SCR denitration spray gun system can make urea evenly distributed in the flue, improves pyrolysis efficiency.
Description
Technical Field
The utility model relates to a pyrolysis equipment technical field, concretely relates to SCR denitration spray gun system and SCR deNOx systems.
Background
The urea direct injection pyrolysis technology is characterized in that urea solution is atomized and then sprayed into an SCR inlet flue, and the urea solution is pyrolyzed into a reducing agent required by SCR denitration by using high-temperature flue gas heat in the SCR inlet flue. The urea pyrolysis spray gun is a key component for spraying urea solution into an inlet flue, and the arrangement mode of the spray gun influences the distribution condition of urea in the flue and reduces the pyrolysis efficiency.
Disclosure of Invention
The present invention is directed to solving, at least to some extent, one of the technical problems in the related art. Therefore, the embodiment of the invention provides an SCR denitration spray gun system which can enable urea to be uniformly distributed in a flue and improve the pyrolysis efficiency.
The embodiment of the utility model provides a SCR deNOx systems has still been provided.
The SCR denitration spray gun system of the embodiment of the invention comprises: the spraying gun comprises a plurality of spraying guns, one ends of the spraying guns are suitable for extending into a flue, the spraying guns are arranged at intervals, the spraying guns are divided into a plurality of spraying areas, and the spraying areas are arranged at intervals along the circumferential direction of the flue.
The utility model discloses SCR denitration spray gun system can make urea evenly distributed in the flue, improves pyrolysis efficiency.
In some embodiments, the plurality of injection zones are located on the same cross-section of the flue.
In some embodiments, the plurality of spray guns in the injection zone are arranged in a matrix or at intervals along the circumferential direction of the flue, and the plurality of spray guns in the plurality of injection zones are arranged in the same manner.
In some embodiments, the plurality of injection zones have the same area on the flue cross-section.
In some embodiments, the number of lances in a plurality of the injection zones is the same,
in some embodiments, the number of spray guns is A, and 4 ≦ A ≦ 16.
In some embodiments, the number of injection zones is 2 to 4.
In some embodiments, the SCR denitration lance system further includes a plurality of first regulating valves, and the plurality of regulating valves correspond to the plurality of injection zones one to one.
In some embodiments, the SCR denitration lance system further includes a plurality of second regulating valves, and the plurality of second regulating valves respectively correspond to the plurality of lances one to one.
The utility model discloses SCR deNOx systems, include as above-mentioned any one embodiment SCR deNOx spray gun system.
Drawings
Fig. 1 is the utility model discloses SCR denitration spray gun system's of embodiment structural schematic.
Fig. 2 is a schematic structural diagram of an SCR denitration lance system according to another embodiment of the present invention.
Reference numerals:
a first section 1, a second section 2, a third section 3, a fourth section 4, and a spray gun 5.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
The SCR denitration spray gun system comprises a plurality of spray guns 5, one ends of the spray guns 5 are suitable for extending into a flue, the spray guns 5 are arranged at intervals, the spray guns 5 are divided into a plurality of injection areas, and the injection areas are arranged at intervals along the circumferential direction of the flue.
For example, the outlet of the spray gun 5 extends into the flue, a plurality of injection areas are sequentially arranged along the circumferential direction of the flue, and the injection area surrounded by the plurality of injection areas covers the cross section of the flue.
It should be noted that the amount of urea solution injected by the multiple injection areas may be the same or different, that is, the multiple injection areas may adjust the amount of urea solution injected by the different injection areas according to the distribution of flue gas in the flue, for example, as shown in fig. 1, when the flow rate of flue gas in the first partition 1 is larger, the amount of urea solution injected by the first partition 1 may be larger.
The utility model discloses SCR denitration spray gun system through setting up a plurality of injection districts, can adjust the urea injection volume of different injection districts according to the distribution of flue gas in the flue to through setting up a plurality of injection districts, can make urea evenly distributed in the flue, improve pyrolysis efficiency.
In some embodiments, the plurality of injection zones are located on the same cross-section of the flue.
It should be noted that the plurality of injection regions are connected end to end along the circumferential direction of the flue, the area of the injection region surrounded by the plurality of injection regions is the same as the area of the cross section of the flue, and the flow rates of the flue gas in the plurality of injection regions are the same or similar, so that the urea solution is uniformly distributed in the flue.
For example, the number of the injection zones surrounded by the plurality of injection zones may be a plurality of injection zones, the plurality of injection zones are arranged at intervals in the extending direction of the flue, the number of the injection zones of each injection zone may be the same or different, and the number of the spray guns 5 of each injection zone may be the same or different.
In some embodiments, the plurality of spray guns 5 in the injection zone are arranged in a matrix or at intervals along the circumference of the flue, and the plurality of spray guns 5 in the plurality of injection zones are arranged in the same manner.
Specifically, as shown in fig. 1, the plurality of spray guns 5 are arranged at regular intervals in the injection zone, and the plurality of spray guns 5 are distributed in a matrix, as shown in fig. 2, the plurality of spray guns 5 are distributed circumferentially.
In some embodiments, the plurality of injection zones have the same area in the flue cross-section.
Specifically, as shown in fig. 1 and 2, the number of the injection zones is four, four injection zones are distributed as a first zone 1, a second zone 2, a third zone 3 and a fourth zone 4, the areas of the four injection zones are the same, and the sum of the areas of the four injection zones is the same as the area of the flue section. The areas of the plurality of injection areas are the same, so that the urea in the flue can be uniformly distributed, and the urea pyrolysis efficiency is improved.
In some embodiments, the number of lances 5 of the plurality of injection zones is the same.
Specifically, as shown in fig. 1 and fig. 2, the number of spray guns 5 in each injection zone is the same, and the same spray guns 5 can ensure that the amount of urea solution injected in each injection zone is the same, or the number of spray guns 5 in each injection zone is different, the number of spray guns 5 in each injection zone can be adjusted according to the distribution of flue gas in the flue, the number of spray guns 5 is a, and 4 ≦ a ≦ 16, for example, a can be 4, 6, 8, 12, 16.
In some embodiments, the number of ejection zones is 2 to 4.
For example, as shown in fig. 1, the number of injection zones is 4, 4 injection zones are distributed as the first partition 1, the second partition 2, the third partition 3 and the fourth partition 4, or the number of injection zones is 3, three injection zones are distributed as the first partition 1, the second partition 2 and the third partition 3, and the number of injection zones is related to the shape and the size of the flue, that is, when the size of the flue is small, the number of injection zones is small, and conversely, when the size of the flue is large, the number of injection zones is large.
The utility model discloses SCR denitration spray gun system, the quantity through the adjustment injection district is in order to be suitable for the flue of unidimensional and shape.
In some embodiments, the SCR denitration lance system further includes a plurality of first regulating valves (not shown), which correspond one-to-one to the plurality of injection zones.
For example, the first regulating valves are automatic regulating valves, the number of the first regulating valves is the same as that of the injection areas, the first regulating valves correspond to the injection areas one by one, and the total amount of the urea solution entering the injection areas can be regulated by the first regulating valves.
In some embodiments, the SCR denitration lance system further includes a plurality of second regulating valves (not shown) corresponding to the plurality of lances 5 one to one, respectively.
For example, the second regulating valve may be a manual regulating valve or an automatic regulating valve, the plurality of second regulating valves are respectively connected to the first regulating valve, the number of the second regulating valves is the same as the number of the spray guns 5, and the plurality of second regulating valves are connected to the plurality of spray guns 5 in a one-to-one correspondence, and the injection amount of each spray gun 5 can be regulated by setting the second regulating valves.
The utility model discloses SCR deNOx systems, include the SCR deNOx spray gun system as above-mentioned any one embodiment.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, but are not intended to indicate or imply that the device or element so referred to must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and are not to be construed as limiting the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "above," and "over" a second feature may be directly on or obliquely above the second feature, or simply mean that the first feature is at a higher level than the second feature. A first feature "under," "beneath," and "under" a second feature may be directly under or obliquely under the second feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In the present disclosure, the terms "one embodiment," "some embodiments," "an example," "a specific example," or "some examples" and the like mean that a specific feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present disclosure. 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. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (10)
1. The utility model provides a SCR denitration spray gun system which characterized in that includes:
the spraying gun comprises a plurality of spraying guns, one ends of the spraying guns are suitable for extending into a flue, the spraying guns are arranged at intervals, the spraying guns are divided into a plurality of spraying areas, and the spraying areas are arranged at intervals along the circumferential direction of the flue.
2. The SCR denitration lance system of claim 1, wherein a plurality of the injection zones are located at a same cross section of the flue.
3. The SCR denitration lance system of claim 2, wherein the plurality of lances in the injection zone are arranged in a matrix or spaced apart along a circumferential direction of the flue, and the plurality of lances in the injection zone are arranged in the same manner.
4. The SCR denitration lance system of claim 1, wherein a plurality of the injection zones have the same area on the flue cross section.
5. The SCR denitration lance system of any one of claims 1 to 4, wherein the number of lances of a plurality of the injection zones is the same.
6. The SCR denitration lance system of any one of claims 1 to 4, wherein the number of lances is A and 4 ≦ A ≦ 16.
7. The SCR denitration lance system of any one of claims 1 to 4, wherein the number of injection zones is 2 to 4.
8. The SCR denitration lance system of claim 1, further comprising a plurality of first regulating valves, the plurality of regulating valves corresponding one-to-one to the plurality of injection zones.
9. The SCR denitration lance system of claim 1, further comprising a plurality of second regulating valves, the plurality of second regulating valves corresponding to the plurality of lances one-to-one, respectively.
10. An SCR denitration system comprising the SCR denitration lance system according to any one of claims 1 to 9.
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| CN202221976894.4U CN217988928U (en) | 2022-07-27 | 2022-07-27 | SCR denitration spray gun system and SCR denitration system |
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| CN202221976894.4U CN217988928U (en) | 2022-07-27 | 2022-07-27 | SCR denitration spray gun system and SCR denitration system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115121118A (en) * | 2022-07-27 | 2022-09-30 | 西安热工研究院有限公司 | SCR denitration ammonia injection system and SCR denitration ammonia injection control method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115121118A (en) * | 2022-07-27 | 2022-09-30 | 西安热工研究院有限公司 | SCR denitration ammonia injection system and SCR denitration ammonia injection control method |
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