CN212263683U - Spray gun, CFB desulfurizing tower and system suitable for CFB desulfurization system - Google Patents
Spray gun, CFB desulfurizing tower and system suitable for CFB desulfurization system Download PDFInfo
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- CN212263683U CN212263683U CN202020200120.7U CN202020200120U CN212263683U CN 212263683 U CN212263683 U CN 212263683U CN 202020200120 U CN202020200120 U CN 202020200120U CN 212263683 U CN212263683 U CN 212263683U
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- Prior art keywords
- spray gun
- sleeve
- nozzle
- flange
- cfb
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- 238000006477 desulfuration reaction Methods 0.000 title claims abstract description 21
- 230000023556 desulfurization Effects 0.000 title claims abstract description 21
- 239000007921 spray Substances 0.000 title abstract description 48
- 230000003009 desulfurizing effect Effects 0.000 title abstract description 12
- 238000006243 chemical reaction Methods 0.000 claims abstract description 28
- 230000000694 effects Effects 0.000 abstract description 10
- 238000000889 atomisation Methods 0.000 abstract description 8
- 239000000779 smoke Substances 0.000 abstract description 7
- 230000002035 prolonged effect Effects 0.000 abstract description 5
- 238000000034 method Methods 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 239000000428 dust Substances 0.000 description 4
- 230000008021 deposition Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 2
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 2
- 239000000920 calcium hydroxide Substances 0.000 description 2
- 230000013011 mating Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Images
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Abstract
The utility model discloses a spray gun, CFB desulfurizing tower and system suitable for CFB desulfurization system, include: a nozzle; one end of the pipe body is connected with the nozzle, the other end of the pipe body is provided with a flange, and a first flange cover is arranged between the nozzle and the flange; the sleeve wraps the pipe body, one end of the sleeve is provided with a second flange cover, and the other end of the sleeve is connected with the nozzle; the second flange cover is connected with the first flange cover in a matching mode. After the sleeve is additionally arranged outside the spray gun, the spray gun can be well protected from being corroded and blocked by smoke, and the service life of the spray gun is prolonged. The spray gun can go deep into the center of the reaction tower, so that a better atomization effect is achieved, and bias current can be caused by placing the sleeve. Moreover, all parts of the spray gun are fixed through flanges or flange covers, and the structure and the specification are unified.
Description
Technical Field
The utility model relates to a desulfurization technical field, in particular to spray gun, CFB desulfurizing tower and system suitable for CFB desulfurization system.
Background
At present, various semi-dry desulphurization process systems are widely applied to various industries such as electric power, metallurgy, chemical industry, building materials and the like. The working principle is basically the same: the negative pressure is generated under the suction of a tail end draught fan, under the action of the negative pressure, dust-containing gas enters the desulfurizing tower from the dust hood through a pipeline, water and calcium hydroxide powder are sprayed into the tower by a matching system attached to the desulfurizing tower, flue gas circularly reacts with the water and the calcium powder in the desulfurizing tower, is discharged to a bag-type dust remover, is filtered by the bag-type dust remover, enters a chimney through the draught fan and is finally discharged into the atmosphere. In the existing spray gun, the nozzle structure is unreasonable in type selection, and the drift is caused by insufficient verticality and no central position of the desulfurizing tower. And the nozzles are prone to clogging as the operating time of the system equipment is extended.
SUMMERY OF THE UTILITY MODEL
Objects of the invention
The utility model aims at providing a spray gun, CFB desulfurizing tower and the system that are applicable to CFB desulfurization system are in order to solve the bias current that arouses and the easy technical problem who blocks up of nozzle among the desulfurization process.
(II) technical scheme
In order to solve the above problem, a first aspect of the present invention provides a spray gun suitable for a CFB desulfurization system, including: a nozzle; one end of the pipe body is connected with the nozzle, the other end of the pipe body is provided with a flange, and a first flange cover is arranged between the nozzle and the flange; the sleeve wraps the pipe body, one end of the sleeve is provided with a second flange cover, and the other end of the sleeve is connected with the nozzle; the second flange cover is connected with the first flange cover in a matching mode.
Furthermore, a through hole is formed in the outer wall of the sleeve, and the through hole (32) is used for balancing air pressure inside and outside the sleeve (3). Furthermore, the through holes are multiple and are uniformly distributed along the circumference of the outer wall of the sleeve.
Further, the aperture range of the through hole is 3-8 mm.
Further, be equipped with venturi in the nozzle, the venturi entry with the body intercommunication, the nozzle is followed venturi's axis sprays.
According to another aspect of the utility model, a CFB desulfurizing tower is provided, including reaction tower and any one of above-mentioned scheme the spray gun, the reaction tower passes through the flange with detachable connection structure is constituteed to the spray gun.
Further, the outer wall of the reaction tower is provided with a hand hole, and the hand hole is used for probing the inside of the reaction tower.
Further, the aperture range of the hand hole is 150-250 mm.
According to another aspect of the present invention, there is provided a CFB desulfurization system comprising the lance according to any one of the above aspects and/or the reaction tower according to any one of the above aspects.
(III) advantageous effects
The above technical scheme of the utility model has following profitable technological effect:
after the sleeve is additionally arranged outside the spray gun, the spray gun can be well protected from being corroded and blocked by smoke, and the service life of the spray gun is prolonged. The spray gun can go deep into the center of the reaction tower, so that a better atomization effect is achieved, and bias current can be caused by placing the sleeve. Moreover, all parts of the spray gun are fixed through flanges or flange covers, and the structure and the specification are unified.
Drawings
Fig. 1 is a schematic view of a spray gun according to an embodiment of the present invention.
Fig. 2 is a schematic structural diagram of a bushing according to an embodiment of the present invention.
Reference numerals:
1: a nozzle; 11: a venturi tube; 2: a pipe body; 21: a flange; 22: a first flange cover; 3: a sleeve; 31: a second flange cover; 32: and a through hole.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in detail with reference to the accompanying drawings. It should be understood that the description is intended to be illustrative only and is not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.
A schematic diagram of a layer structure according to an embodiment of the invention is shown in the drawing. The figures are not drawn to scale, wherein certain details are exaggerated and possibly omitted for clarity. The shapes of various regions, layers, and relative sizes and positional relationships therebetween shown in the drawings are merely exemplary, and deviations may occur in practice due to manufacturing tolerances or technical limitations, and a person skilled in the art may additionally design regions/layers having different shapes, sizes, relative positions, as actually required.
It is to be understood that the embodiments described are only some of the embodiments of the present invention, and not all of them. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Furthermore, the technical features mentioned in the different embodiments of the invention described below can be combined with each other as long as they do not conflict with each other.
The invention will be described in more detail below with reference to the accompanying drawings. Like elements in the various figures are denoted by like reference numerals. For purposes of clarity, the various features in the drawings are not necessarily drawn to scale.
In an embodiment of the present invention, there is provided a schematic structural diagram of a first tile hanging device in fig. 1.
Fig. 1 is a schematic view of a spray gun according to an embodiment of the present invention.
Fig. 2 is a schematic structural diagram of a bushing according to an embodiment of the present invention.
As shown in fig. 1 and 2, in an embodiment of the present invention, there is provided a spray gun for a CFB desulfurization system, including: a nozzle 1; one end of the pipe body 2 is connected with the nozzle 1, the other end of the pipe body 2 is provided with a flange 21, and a first flange cover 22 is arranged between the nozzle 1 and the flange 21; the sleeve 3, the sleeve 3 coats the tube body 2, one end of the sleeve 3 is provided with a second flange cover 31, and the other end is connected with the nozzle 1; the second flange cover 31 is connected to the first flange cover 22 in a mating manner. After the sleeve 3 is additionally arranged outside the spray gun, the spray gun can be well protected from being corroded and blocked by smoke, and the service life of the spray gun is prolonged. The spray gun can go deep into the center of the reaction tower, so that a better atomization effect is achieved, and the sleeve 3 can be placed to cause bias flow. Moreover, the parts of the spray gun are fixed through the flange 21 or the flange cover 22(31), and the structure and the specification are unified.
In an alternative embodiment, the outer wall of the casing 3 is provided with a through hole 32, and the through hole 32 is used for balancing the air pressure inside and outside the casing 3. In the spraying process of the nozzle 1, air (or smoke) is sucked from the position of the through hole 32 in a negative pressure state, the sleeve 3 is protected, and the sleeve 3 is prevented from being damaged when the internal and external pressures are uneven.
In an alternative embodiment, the through holes 32 are plural, and the plural through holes 32 are uniformly distributed along the circumference of the outer wall of the casing 3.
In an alternative embodiment, the aperture of the through-hole 32 is in the range of 3-8 mm.
In an alternative embodiment, a venturi tube 11 is provided in the nozzle 1, the inlet of the venturi tube 11 is connected to the tubular body 2, and the nozzle 1 sprays along the axis of the venturi tube 11. The venturi tube 11 is additionally arranged in the nozzle 1 to accelerate the spraying speed and achieve a better atomization effect. Because the venturi tube 11 is a pipeline structure which is contracted first and then gradually enlarged, the calcium hydroxide sprayed by the nozzle 1 is more uniform, the spray opening angle is larger, a better atomization effect is achieved, and the desulfurization reaction is more complete.
In another embodiment of the present invention, a CFB desulfurization tower is provided, which comprises a reaction tower and a spray gun according to any one of the above embodiments, wherein the reaction tower forms a detachable connection structure with the spray gun through a flange 21.
In an alternative embodiment, the outer wall of the reaction column is provided with hand holes for probing the inside of the reaction column.
In an alternative embodiment, the aperture of the hand hole is in the range of 150 mm and 250 mm.
In a preferred embodiment, four hand holes with a diameter of 200mm are uniformly arranged on the same circumference of the wall of the reaction tower.
In another embodiment of the present invention, there is provided a CFB desulfurization system including the lance of any one of the above aspects.
In another embodiment of the present invention, there is provided a CFB desulfurization system including the reaction tower of any one of the above aspects.
In another embodiment of the present invention, there is provided a CFB desulfurization system including the lance and the reaction tower of any one of the above aspects.
The use method of the spray gun comprises the following steps: four hand holes with the diameter of 200mm are uniformly formed on the same circumference of the wall of the reaction tower, an ash extractor is used for extending into the reaction tower, an ash sample is periodically taken from each hole every 2 hours, and the flowability and the humidity of the ash are observed.
After the ash sample is taken by the ash taking device, a hand is stretched into the desulfurizing tower, the wall of the desulfurizing tower is touched to avoid wall deposition, if a small amount of wall deposition exists, the wall deposition is timely removed, the water supply amount is reduced, the follow-up focus tracking is realized, and the number of periodic inspection times is increased.
This transformation, on the basis to former desulfurization spray gun, outside increase support sleeve 3, its purpose: firstly, protecting the spray gun from being corroded by smoke, and prolonging the service life of the spray gun; secondly, after the sleeve 3 is installed, the spray gun can go deep into the center of the reaction tower, and a better atomization effect is achieved.
Through the change of the using method of the spray gun, the amount of water sprayed into the reaction tower can be known, and the condition that the inner wall of the reaction tower is scaled by adjusting the sprayed water amount. In addition, after the sleeve 3 is additionally arranged outside the spray gun, the spray gun can be well protected from being corroded by smoke, and the service life of the spray gun is prolonged
Finally, after the sleeve 3 is installed, the spray gun can go deep into the center of the reaction tower, and a better atomization effect is achieved.
The utility model aims at protecting a spray gun suitable for CFB desulfurization system, include: a nozzle 1; one end of the pipe body 2 is connected with the nozzle 1, the other end of the pipe body 2 is provided with a flange 21, and a first flange cover 22 is arranged between the nozzle 1 and the flange 21; the sleeve 3, the sleeve 3 coats the tube body 2, one end of the sleeve 3 is provided with a second flange cover 31, and the other end is connected with the nozzle 1; the second flange cover 31 is connected to the first flange cover 22 in a mating manner. After the sleeve 3 is additionally arranged outside the spray gun, the spray gun can be well protected from being corroded and blocked by smoke, and the service life of the spray gun is prolonged. The spray gun can go deep into the center of the reaction tower, so that a better atomization effect is achieved, and the sleeve 3 can be placed to cause bias flow. Moreover, the parts of the spray gun are fixed through the flange 21 or the flange cover 22(31), and the structure and the specification are unified.
The above description refers to the embodiments of the present invention. However, these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof. Various alternatives and modifications can be devised by those skilled in the art without departing from the scope of the invention, and these alternatives and modifications are intended to be within the scope of the invention.
Claims (9)
1. A lance adapted for use in a CFB desulfurization system, comprising:
a nozzle (1);
one end of the pipe body (2) is connected with the nozzle (1), the other end of the pipe body is provided with a flange (21), and a first flange cover (22) is arranged between the nozzle (1) and the flange (21);
the sleeve (3) wraps the pipe body (2), one end of the sleeve (3) is provided with a second flange cover (31), and the other end of the sleeve is connected with the nozzle (1);
the second flange cover (31) is matched and connected with the first flange cover (22).
2. The lance defined in claim 1 wherein,
the outer wall of the sleeve (3) is provided with a through hole (32), and the through hole (32) is used for balancing the air pressure inside and outside the sleeve (3).
3. The lance defined in claim 2 wherein,
the through holes (32) are multiple, and the through holes (32) are uniformly distributed along the circumference of the outer wall of the sleeve (3).
4. The lance defined in claim 2 or claim 3 wherein,
the aperture range of the through hole (32) is 3-8 mm.
5. The lance defined in claim 1 wherein,
be equipped with venturi (11) in nozzle (1), venturi (11) entry with body (2) intercommunication, nozzle (1) is followed the axis of venturi (11) is sprayed.
6. A CFB desulfurization tower comprising a reaction tower and the lance defined in any one of claims 1-5, wherein the reaction tower is detachably connected to the lance via the flange (21).
7. The desulfurization tower of claim 6,
the outer wall of the reaction tower is provided with a hand hole, and the hand hole is used for probing the inside of the reaction tower.
8. The desulfurization tower of claim 7,
the aperture range of the hand hole is 150-250 mm.
9. A CFB desulphurisation system comprising a lance according to any one of claims 1 to 5 and/or a reaction column according to any one of claims 6 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020200120.7U CN212263683U (en) | 2020-02-24 | 2020-02-24 | Spray gun, CFB desulfurizing tower and system suitable for CFB desulfurization system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020200120.7U CN212263683U (en) | 2020-02-24 | 2020-02-24 | Spray gun, CFB desulfurizing tower and system suitable for CFB desulfurization system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212263683U true CN212263683U (en) | 2021-01-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202020200120.7U Expired - Fee Related CN212263683U (en) | 2020-02-24 | 2020-02-24 | Spray gun, CFB desulfurizing tower and system suitable for CFB desulfurization system |
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| Country | Link |
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| CN (1) | CN212263683U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118416681A (en) * | 2024-07-05 | 2024-08-02 | 佛山仙湖实验室 | Efficient SNCR denitration spray gun, system and use method |
-
2020
- 2020-02-24 CN CN202020200120.7U patent/CN212263683U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118416681A (en) * | 2024-07-05 | 2024-08-02 | 佛山仙湖实验室 | Efficient SNCR denitration spray gun, system and use method |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210101 |
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| CF01 | Termination of patent right due to non-payment of annual fee |