CN220371314U - Spray head and absorption tower spray assembly - Google Patents

Spray head and absorption tower spray assembly Download PDF

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Publication number
CN220371314U
CN220371314U CN202321954962.1U CN202321954962U CN220371314U CN 220371314 U CN220371314 U CN 220371314U CN 202321954962 U CN202321954962 U CN 202321954962U CN 220371314 U CN220371314 U CN 220371314U
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China
Prior art keywords
spray
spray head
spraying
baffle
pipe body
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Application number
CN202321954962.1U
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Chinese (zh)
Inventor
曾毅港
魏尚政
孙乐
张�浩
钟旭伟
杨诗涛
谢冯铖
易志远
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Huaneng Power International Inc
Huaneng Hunan Yueyang Power Generation Co Ltd
Original Assignee
Huaneng Power International Inc
Huaneng Hunan Yueyang Power Generation Co Ltd
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Application filed by Huaneng Power International Inc, Huaneng Hunan Yueyang Power Generation Co Ltd filed Critical Huaneng Power International Inc
Priority to CN202321954962.1U priority Critical patent/CN220371314U/en
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Publication of CN220371314U publication Critical patent/CN220371314U/en
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Abstract

The utility model particularly discloses a spray head and an absorption tower spray assembly. The shower nozzle includes shower nozzle body, orifice, body and baffle, and the shower nozzle body is spherical and has the ball chamber, and the orifice is a plurality of, and a plurality of orifices are established on the shower nozzle body and communicate with the ball chamber, and the body is connected with the shower nozzle body, and the inner chamber and the ball chamber intercommunication of body are in order to carry the spray liquid to the ball intracavity, and the baffle is established in order to stop outside blowout spray liquid of partial orifice on the shower nozzle body. The spray nozzle disclosed by the utility model can ensure that spray liquid sprayed out of all spray holes of the spray nozzle body is relatively uniform, and meanwhile, the spray range can be controlled through the baffle plate.

Description

Spray head and absorption tower spray assembly
Technical Field
The utility model belongs to the technical field of energy and power in the power industry, and particularly relates to a spray head and an absorption tower spray assembly.
Background
The utility model discloses a flue gas desulfurization is sprayed to the absorption tower to the power plant, and the arrangement mode of shower nozzle adopts two-way (from top to bottom) and down type (two holes downwards) more, often needs to be through improving the quantity of arranging of shower nozzle in order to improve the spraying effect of spraying liquid to the alkaline material in the messenger sprays liquid and the acid material in the flue gas can fully react. In the related art, in order not to hurt the tower wall, the spray liquid is not directly impacted on the inner wall of the tower body, the spray head is required to be obliquely arranged towards the middle part of the absorption tower, the concentration of the spray liquid close to the tower wall area of the absorption tower is low, and the acid substances in the flue gas in the corresponding area are insufficient in reaction.
Disclosure of Invention
The present utility model aims to solve at least one of the technical problems in the related art to some extent. To this end, an embodiment of the present utility model proposes a head capable of improving and controlling a spray range of the head.
The embodiment of the utility model also provides an absorption tower spray assembly.
The spray head provided by the embodiment of the utility model comprises:
the spray head body is spherical and provided with a spherical cavity;
the spray holes are multiple and are arranged on the spray head body and communicated with the ball cavity;
the pipe body is connected with the spray head body, and the inner cavity of the pipe body is communicated with the ball cavity to convey spray liquid into the ball cavity;
the baffle is arranged on the spray head body to block part of spray holes from spraying liquid outwards.
The spray nozzle provided by the embodiment of the utility model can uniformly spray the spray liquid in the circumferential direction of the spray nozzle body, and can control the spray range through the baffle plate.
In some embodiments, the baffle has a first end surface, the first end surface is a sphere, and the first end surface is abutted against the nozzle body to prevent the spray liquid from being sprayed outwards from the spray holes in the corresponding area.
In some embodiments, the baffle further comprises a first connection portion connected with the tube.
In some embodiments, the first connection portion includes:
the ring sleeve is fixed with the baffle, is sleeved on the pipe body and can rotate relative to the pipe body;
the connecting piece is arranged between the ring sleeve and the pipe body so as to fix the ring sleeve on the pipe body.
In some embodiments, the collar is a split ring.
In some embodiments, the baffle further comprises a second connection comprising:
the cylinder is arranged on the baffle, the axis of the cylinder is collinear with the axis of the ring sleeve, the spray head body is provided with a positioning hole, the cylinder is inserted in the positioning hole, and the cylinder is rotatable in the positioning hole.
In some embodiments, the pipe body comprises a first pipe body and a second pipe body, the first pipe body is connected with the spray head body, the second pipe body is connected with the first pipe body, the second pipe body can swing relative to the first pipe body, and a connecting section is arranged on the second pipe body; and/or
The spray nozzle further comprises an atomization part, wherein the atomization part is arranged in the spray hole so as to atomize spray liquid sprayed from the spray hole; and/or
Still include scale anticorrosive coating, the shower nozzle body the body with all be equipped with scale anticorrosive coating on the baffle.
The absorption tower spray assembly provided by the embodiment of the utility model comprises:
the liquid distribution pipe rack is arranged in the absorption tower;
the first spraying part is the spray head in any embodiment, a plurality of first spraying parts are arranged on the liquid distribution pipe frame, the first spraying parts are arranged along the circumferential outer edge of the liquid distribution pipe frame, and the baffle plate in the first spraying part is arranged on one side, close to the inner wall surface of the absorption tower, of the spray head body;
and the second spraying parts are arranged at intervals in the middle of the liquid distribution pipe rack.
In some embodiments, at least a portion of the spray area of the second spray portion is tapered; and/or
At least part of the spraying range of the second spraying part is spherical.
In some embodiments, the liquid distribution pipe frames are a plurality of, and a plurality of liquid distribution pipe frames are arranged at intervals along the vertical direction.
Drawings
Fig. 1 is a schematic view of a spray head according to an embodiment of the present utility model.
Fig. 2 is a schematic structural view of a spray head according to another embodiment of the present utility model.
Fig. 3 is a schematic structural view of a spray head according to still another embodiment of the present utility model.
Fig. 4 is a schematic view of the structure of a spray head according to still another embodiment of the present utility model, showing the structure in the A-A direction of fig. 3.
Fig. 5 is a schematic view of the structure of an absorber spray assembly in accordance with an embodiment of the present utility model.
Fig. 6 is a schematic view of the structure of an absorber spray assembly in accordance with another embodiment of the utility model.
Fig. 7 is a schematic structural view of an air distribution plate according to an embodiment of the present utility model.
Reference numerals:
a spray head 1;
the spray head comprises a spray head body 11, spray holes 12, a pipe body 13, a first pipe body 131, a second pipe body 132, a connecting section 1321, a universal joint 133, a baffle 14, a ring sleeve 141, a connecting piece 142 and a cylinder 143;
a liquid distribution pipe rack 2;
a first spraying part 21, a second spraying part 22 and an air distribution plate 23.
Detailed Description
Reference will now be made in detail to embodiments of the present utility model, examples of which are illustrated in the accompanying drawings. The embodiments described below by referring to the drawings are illustrative and intended to explain the present utility model and should not be construed as limiting the utility model.
Referring to fig. 1-4, the spray head provided by the embodiment of the utility model comprises a spray head body 11, spray holes 12, pipes, 13 and a baffle 14, wherein the spray head body 11 is spherical and is provided with a spherical cavity, the spray holes 12 are multiple, the spray holes 12 are arranged on the spray head body 11 and are communicated with the spherical cavity, the pipe body 13 is connected with the spray head body 11, the inner cavity of the pipe body 13 is communicated with the spherical cavity to convey spray liquid into the spherical cavity, and the baffle 14 is arranged on the spray head body 11 to prevent part of the spray holes 12 from spraying the spray liquid outwards.
That is, through setting up shower nozzle body 11 to spherically, can make orifice 12 arrange in the each direction of shower nozzle body 11 circumference to improve the spraying scope of shower nozzle body 11, through the spraying of a plurality of orifices 12, improve the homogeneity of spray liquid in the absorption tower, the body is used for carrying spray liquid to the ball intracavity, and can carry out the installation and the fixed of shower nozzle through the body, baffle 14 is used for sheltering from partial orifice 12, prevent the shower nozzle and directly spout spray liquid on the tower body inner wall, avoid the spray liquid to flow down the back unable effective mixed contact with flue gas along the tower body inner wall, also reduce the corruption of spray liquid to the tower body.
In some embodiments, the spray holes 12 are uniformly arranged at intervals on the spherical surface of the spray head body 11, so as to ensure that spray liquid sprayed in all directions of the circumferential direction of the spray head body 11 tends to be consistent, so that flue gas in the absorption tower and the spray liquid can fully contact and react, and the purification effect of the flue gas is improved.
As shown in fig. 4, in some embodiments, the baffle 14 has a first end surface, which is spherical, and the first end surface abuts against the nozzle body 11 to prevent the spray holes 12 of the corresponding area from spraying the spray liquid outwards.
That is, one end surface of the baffle 14 is in contact with the nozzle body 11, so that the spray holes 12 at the corresponding positions are prevented from spraying the spray liquid, and the spray area of the nozzle is controlled and adjusted.
As shown in fig. 1 and 2, in some embodiments, the baffle 14 further includes a first connection portion that connects with the tube. Through connecting baffle 14 on the body to avoid first connecting portion to occupy the area of shower nozzle body 11, improve the area that can be used to arrange orifice 12 on the shower nozzle body 11, still reduced the assembly degree of difficulty between the part, more be convenient for produce and process, ensured the integrality and the structural strength of shower nozzle body 11, made its performance more stable.
In some embodiments, the first connection portion includes a collar 141 and a connection member 142, the collar 141 is fixed to the baffle 14, the collar 141 is sleeved on the tube body and the collar 141 is rotatable relative to the tube body, and the connection member 142 is provided between the collar 141 and the tube body to fix the collar 141 to the tube body.
That is, the collar 141 is disposed at one end of the baffle 14, such that the collar 141 is sleeved on the pipe body, and the collar 141 of the baffle 14 can rotate relative to the pipe body, when the collar 141 is rotated, the position of the baffle 14 on the nozzle body 11 can be adjusted, the connecting member 142 is used for fixing the collar 141, and after the baffle 14 is adjusted in place, the connecting member 142 is screwed.
Alternatively, the connecting piece 142 is a bolt, a threaded hole is formed in the collar 141, the connecting piece 142 is disposed in the threaded hole, and the end of the connecting piece 142 abuts against the pipe body.
In some embodiments, collar 141 is a split ring.
The ring sleeve 141 is arranged into an opening ring structure, so that the baffle 14 can be conveniently detached and installed, different requirements on the spraying range are met by spray heads at different positions, therefore, the baffle 14 has various types in size, the ring sleeve 141 can be sleeved on or separated from a pipe body when the baffle 14 is installed or debugged and replaced in different sizes, and the ring sleeve 141 can be conveniently fixed with the pipe body by being opened.
As shown in fig. 4, in some embodiments, the baffle 14 further includes a second connection portion, where the second connection portion includes a cylinder 143, the cylinder 143 is disposed on the baffle 14, an axis of the cylinder 143 is collinear with an axis of the collar 141, a positioning hole is formed on the nozzle body 11, the cylinder 143 is inserted into the positioning hole, and the cylinder 143 is rotatable in the positioning hole.
It should be noted that, when the baffle 14 is connected to the pipe body only through the collar 141, the other end of the baffle 14 is easily separated from the nozzle body 11 under the pressure of the spraying liquid, so as to form a gap, so that the spraying liquid flows out along the gap, and waste of the spraying liquid is easily caused, therefore, by setting the column 143, both ends of the baffle 14 can be effectively restrained, and the first end surface of the baffle 14 is tightly attached to the nozzle body 11, so as to effectively seal the nozzle 12.
Optionally, an elastic layer may be disposed at the first end surface of the baffle 14, and the elastic layer may be filled between the baffle 14 and the nozzle body 11, so as to improve the sealing effect on the nozzle hole 12.
As shown in fig. 1-4, in some embodiments, the tube body includes a first tube body 131 and a second tube body 132, the first tube body 131 is connected with the spray head body 11, the second tube body 132 is connected with the first tube body 131, the second tube body 132 is swingable relative to the first tube body 131, and a connection section is provided on the second tube body 132.
In order to facilitate the adjustment of the direction of the spray head, the first pipe body 131 and the second pipe body 132 in the embodiment of the utility model can swing mutually, for example, by arranging a universal joint 133 between the first pipe body 131 and the second pipe body 132 to adjust the included angle between the first pipe body 131 and the second pipe body 132, or arranging a flexible coiled pipe between the first pipe body 131 and the second pipe body 132, the coiled pipe can be bent and deformed, and has a certain rigidity after bending and deformation, so that the coiled pipe is prevented from self-deforming in the spraying process.
In some embodiments, the spray head further includes an atomizing portion disposed within the spray orifice 12 to atomize the spray liquid sprayed from the spray orifice 12.
That is, the spray liquid to be sprayed is atomized by providing an atomizing unit in the nozzle hole 12, and the atomizing unit may be an atomizing head provided in the nozzle hole 12.
In some embodiments, the spray head further comprises a scale corrosion protection layer, and the spray head body 11, the pipe body and the baffle 14 are all provided with the scale corrosion protection layer. The scale anti-corrosion paint is coated on the spray head body 11, the pipe body and the baffle 14, so that the anti-corrosion performance is improved, the service life of the spray head is prolonged, and the maintenance frequency of the spray head is reduced.
As shown in fig. 5 and fig. 6, the absorption tower spray assembly according to the embodiment of the present utility model includes a liquid distribution pipe rack 2, a first spray portion 21 and a second spray portion 22, wherein the liquid distribution pipe rack 2 is disposed in the absorption tower, the first spray portion 21 is a spray head in any of the foregoing embodiments, the plurality of first spray portions 21 are disposed on the liquid distribution pipe rack 2, the plurality of first spray portions 21 are disposed at intervals along a circumferential outer edge of the liquid distribution pipe rack 2, a baffle 14 in the first spray portion 21 is disposed on a side of the spray head body 11 close to an inner wall surface of the absorption tower, and the plurality of second spray portions 22 are disposed at intervals in a middle portion of the liquid distribution pipe rack 2.
The arrangement of the liquid distribution pipe frame 2 in the embodiment of the utility model not only facilitates the installation of the first spraying part 21 and the second spraying part 22, but also can ensure that the spraying liquid sprayed by the first spraying part 21 and the second spraying part 22 can be uniformly filled into the spraying layer of the absorption tower, and improves the contact and reaction effects of the flue gas and the spraying liquid. The first spraying part 21 is arranged on the circumferential outer edge of the liquid distribution pipe frame 2, the baffle 14 is arranged on one side close to the inner wall surface of the absorption tower, so that excessive spraying liquid is prevented from flowing down along the inner wall surface of the absorption tower, corrosion of the spraying liquid to the absorption tower is also reduced, the second spraying part 22 is arranged in the middle of the liquid distribution pipe frame 2, normal spraying is realized, and the spraying range of the first spraying part 21 can better cover the region, close to the inner wall of the absorption tower, of the spraying layer of the absorption tower, so that the concentration of the spraying liquid on the same cross section in the spraying layer tends to be consistent.
In some embodiments, as shown in fig. 5, the spraying range of the second spraying portion 22 is tapered, and the plurality of second spraying portions 22 are arranged in a rectangular array, so as to improve the uniformity of the spraying liquid sprayed from the plurality of second spraying portions 22 in the spraying area of the absorption tower.
Or, as shown in fig. 6, the second spraying portion 22 adopts a spherical nozzle, the spraying range of the second spraying portion 22 is spherical, and the second spraying portion 22 has the same structure as the first spraying portion 21, except that the baffle plate 14 is not arranged on the second spraying portion 22, and the second spraying portion 22 is arranged in the middle of the liquid distribution pipe rack 2, so that the spraying range of the second spraying portion 22 can cover the circumferential area of the second spraying portion 22, the spraying range of the second spraying portion 22 is spherical, and in the vertical direction, the second spraying portion 22 can be arranged in the middle of the spraying layer instead of above the spraying layer, thereby reducing the height of the single-layer spraying layer and improving the contact and reaction effects of the flue gas and the spraying liquid in the spraying layer.
Or, the spraying range of part of the second spraying part 22 is conical, and the spraying range of the other part of the second spraying part 22 is spherical, so that when the spraying range of the arranged part of the second spraying part is conical, the uniformity of the spraying liquid at different positions in the vertical direction is different, and at this time, the uniformity of the spraying liquid in the whole spraying layer in the absorption tower can be improved by arranging the second spraying part with the spherical spraying range at the position with poor uniformity.
As shown in fig. 5 and 6, in some embodiments, the number of the liquid distribution pipe racks 2 is multiple, for example, the number of the liquid distribution pipe racks may be 2, 3 or 5, and the plurality of liquid distribution pipe racks 2 are arranged at intervals vertically. The arrangement of the liquid distribution pipe frames 2 can enable the absorption tower to vertically form a plurality of spraying layers, and the flue gas can enable acidic substances in the flue gas to fully react with alkaline substances in the spraying liquid after passing through the spraying layers.
Wherein, the acidic substances in the flue gas comprise oxysulfide, and the spraying liquid adopts limestone slurry.
Optionally, as shown in fig. 5, 3 liquid distribution pipe frames 2 are arranged, in the vertical direction, the spraying ranges of the liquid distribution pipe frames 2 at the uppermost side and the second spraying parts 22 on the liquid distribution pipe frames 2 at the lowermost side are conical, the second spraying parts 22 on the liquid distribution pipe frames 2 at the uppermost side spray downwards, the second spraying parts 22 on the liquid distribution pipe frames at the lowermost side spray upwards, and the spraying range of the second spraying parts 22 on the liquid distribution pipe frames 2 in the middle is spherical, so that a spraying layer with good spraying liquid uniformity and consistency is formed in the absorption tower.
As shown in fig. 5-7, optionally, a gas distribution plate 23 is disposed in the absorption tower, and a plurality of air holes are uniformly distributed on the gas distribution plate 23, so that when the flue gas flows upwards from the bottom of the absorption tower, the flow equalization of the flue gas can be realized after passing through the gas distribution plate 23, and the flue gas is more uniformly dispersed in the spray layer.
In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present utility model and simplify the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and should not be construed as limiting the present utility model.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.
In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.
In the present utility model, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.
For purposes of this disclosure, the terms "one embodiment," "some embodiments," "example," "a particular example," or "some examples," etc., 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 utility model. In this specification, schematic representations of the above terms are not necessarily directed 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, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.
While the above embodiments have been shown and described, it should be understood that the above embodiments are illustrative and not to be construed as limiting the utility model, and that variations, modifications, alternatives, and variations of the above embodiments may be made by those of ordinary skill in the art without departing from the scope of the utility model.

Claims (10)

1. A spray head, comprising:
the spray head body is spherical and provided with a spherical cavity;
the spray holes are multiple and are arranged on the spray head body and communicated with the ball cavity;
the pipe body is connected with the spray head body, and the inner cavity of the pipe body is communicated with the ball cavity to convey spray liquid into the ball cavity;
the baffle is arranged on the spray head body to block part of spray holes from spraying liquid outwards.
2. The spray head of claim 1, wherein the baffle has a first end surface, the first end surface being spherical, the first end surface abutting against the spray head body to prevent the spray holes of the corresponding area from spraying spray liquid outwards.
3. The spray head of claim 1 or 2, wherein the baffle further comprises a first connection portion, the first connection portion being connected to the tube.
4. A spray head according to claim 3, wherein the first connection portion comprises:
the ring sleeve is fixed with the baffle, is sleeved on the pipe body and can rotate relative to the pipe body;
the connecting piece is arranged between the ring sleeve and the pipe body so as to fix the ring sleeve on the pipe body.
5. The spray head of claim 4 wherein said collar is a split collar.
6. The spray head of claim 4, wherein the baffle further comprises a second connection portion, the second connection portion comprising:
the cylinder is arranged on the baffle, the axis of the cylinder is collinear with the axis of the ring sleeve, the spray head body is provided with a positioning hole, the cylinder is inserted in the positioning hole, and the cylinder is rotatable in the positioning hole.
7. The spray head according to claim 1, wherein the pipe body comprises a first pipe body and a second pipe body, the first pipe body is connected with the spray head body, the second pipe body is connected with the first pipe body, the second pipe body can swing relative to the first pipe body, and a connecting section is arranged on the second pipe body; and/or
The spray nozzle further comprises an atomization part, wherein the atomization part is arranged in the spray hole so as to atomize spray liquid sprayed from the spray hole; and/or
Still include scale anticorrosive coating, the shower nozzle body the body with all be equipped with scale anticorrosive coating on the baffle.
8. An absorber spray assembly, comprising:
the liquid distribution pipe rack is arranged in the absorption tower;
a first spray part, which is the spray head according to any one of claims 1 to 7, wherein a plurality of first spray parts are arranged on the liquid distribution pipe rack, the plurality of first spray parts are arranged along the circumferential outer edge of the liquid distribution pipe rack, and the baffle plate in the first spray part is arranged on one side of the spray head body, which is close to the inner wall surface of the absorption tower;
and the second spraying parts are arranged at intervals in the middle of the liquid distribution pipe rack.
9. The absorber spray assembly of claim 8 wherein the spray area of at least a portion of said second spray portion is tapered; and/or
At least part of the spraying range of the second spraying part is spherical.
10. The absorber spray assembly of claim 8 wherein said plurality of liquid distribution pipe racks is vertically spaced apart.
CN202321954962.1U 2023-07-24 2023-07-24 Spray head and absorption tower spray assembly Active CN220371314U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202321954962.1U CN220371314U (en) 2023-07-24 2023-07-24 Spray head and absorption tower spray assembly

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202321954962.1U CN220371314U (en) 2023-07-24 2023-07-24 Spray head and absorption tower spray assembly

Publications (1)

Publication Number Publication Date
CN220371314U true CN220371314U (en) 2024-01-23

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ID=89565792

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202321954962.1U Active CN220371314U (en) 2023-07-24 2023-07-24 Spray head and absorption tower spray assembly

Country Status (1)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117797716A (en) * 2024-03-01 2024-04-02 山东龙安泰环保科技有限公司 Vertical melting jet granulating device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117797716A (en) * 2024-03-01 2024-04-02 山东龙安泰环保科技有限公司 Vertical melting jet granulating device
CN117797716B (en) * 2024-03-01 2024-06-11 山东龙安泰环保科技有限公司 Vertical melting jet granulating device

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