CN213193409U - Urea solution preparation tank for SNCR (Selective non catalytic reduction) denitration system - Google Patents
Urea solution preparation tank for SNCR (Selective non catalytic reduction) denitration system Download PDFInfo
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- CN213193409U CN213193409U CN202022033544.1U CN202022033544U CN213193409U CN 213193409 U CN213193409 U CN 213193409U CN 202022033544 U CN202022033544 U CN 202022033544U CN 213193409 U CN213193409 U CN 213193409U
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- tank body
- rotating shaft
- urea solution
- denitration system
- tank
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Abstract
The utility model provides a urea solution preparation tank for SNCR denitration system, which comprises a tank body and a stirring mechanism; the top of the tank body is provided with a feeding port and a demineralized water filling port, the bottom of the tank body is provided with a discharge port, the inner wall of the tank body is also provided with a spirally arranged steam coil, the stirring mechanism comprises a driving motor and a rotating shaft coaxially connected with an output shaft of the driving motor, the rotating shaft comprises a built-in part arranged in the tank body, the built-in part sequentially comprises a stirring section and a reverse thrust section from the top end to the bottom end, the stirring section comprises a plurality of first blades arranged on the rotating shaft, the first blades are arranged at intervals along the circumferential direction of the rotating shaft, and two adjacent first blades are obliquely arranged at a certain angle; the reverse thrust section comprises a plurality of second paddles, the second paddles are spirally arranged along the circumferential direction of the rotating shaft, and the second paddles are distributed along the radial direction of the rotating shaft and offset towards the top end direction of the tank body. Utilize the utility model provides a urea solution configuration jar can guarantee urea solution's homogeneous mixing, improvement configuration efficiency.
Description
Technical Field
The utility model relates to a urea solution disposes the jar, especially relates to a urea solution disposes jar for SNCR deNOx systems.
Background
Urea solution is often adopted in SNCR denitration system to remove NO in flue gasXReduction and removal are carried out to generate nitrogen and water; the urea solution is generally prepared by a preparation tank (or a reaction tank) to obtain a urea solution with a certain concentration. At present, the existing configuration tank on the market has the technical problems of low mixing configuration efficiency, uneven mixing and the like when the urea solution is configured. Therefore, there is a need for an improvement in the existing urea solution dispensing tank structure.
SUMMERY OF THE UTILITY MODEL
In view of the above situation, the utility model provides a urea solution configuration jar for SNCR deNOx systems for guarantee urea solution's homogeneous mixing, improve configuration efficiency simultaneously.
In order to achieve the purpose, the utility model adopts the technical proposal that:
a urea solution preparation tank for an SNCR denitration system includes:
the device comprises a tank body, wherein the top of the tank body is provided with a feeding port and a demineralized water filling port, the bottom of the tank body is provided with a discharging port, the inner wall of the tank body is also provided with a spirally arranged steam coil pipe for heating the urea solution, and the outer wall of the tank body is also wrapped with a heat insulation layer;
the stirring mechanism comprises a driving motor and a rotating shaft, wherein the driving motor is mounted at the top of the tank body, the rotating shaft is coaxially connected with an output shaft of the driving motor, the rotating shaft comprises a built-in part which is built in the tank body, the built-in part sequentially comprises a stirring section and a reverse thrust section from the top end to the bottom end, the stirring section comprises a plurality of first blades which are arranged on the rotating shaft, the first blades are distributed at intervals along the circumferential direction of the rotating shaft, and every two adjacent first blades are distributed in a certain-angle inclined manner; the reverse thrust section comprises a plurality of second paddles, the second paddles are arranged along the circumferential direction of the rotating shaft in a spiral mode, and the second paddles are arranged along the radial direction of the rotating shaft and offset at a certain angle towards the top end of the tank body.
The beneficial effects of the utility model reside in that:
1. heating the solution in the tank body through a steam coil pipe to avoid the crystallization and precipitation of urea; the heat preservation effect is achieved by arranging the heat preservation layer, and the utilization rate of heat energy is improved;
2. through the combined action of first paddle and second paddle for the mixing stirring of jar internal urea solution utilizes the backstepping effect of second paddle, realizes the intensive mixing and the diffusion of upper and lower layer solution, improves the configuration efficiency, effectively guarantees the degree of consistency that urea solution mixes simultaneously.
The utility model relates to a further improvement that urea solution disposes jar for SNCR deNOx systems lies in: two through holes which are arranged at intervals from top to bottom are formed in the side wall of the tank body, and a magnetic turning plate liquid level meter is arranged between the two through holes in a sealing mode. The liquid level height of the solution in the tank body is observed in real time by arranging the magnetic turning plate liquid level meter.
The utility model relates to a further improvement that urea solution disposes jar for SNCR deNOx systems lies in: jar internal side bottom is from keeping away from the one end of discharge gate is to being close to the one end downward sloping gradually of discharge gate forms an inclined plane. Through setting up the inclined plane, the urea solution after the homogeneous mixing of being convenient for discharges on the one hand, and on the other hand when wasing jar internal portion, the discharge of the liquid of being convenient for avoids jar internal portion to be detained partial liquid.
The utility model relates to a further improvement that urea solution disposes jar for SNCR deNOx systems lies in: the input port is provided with a cover plate. Through setting up the apron, sealed shutoff in the input mouth of apron is carried out urea configuration in-process, avoids stirring in-process urea solution to spatter outward.
The utility model relates to a further improvement that urea solution disposes jar for SNCR deNOx systems lies in: the top of the tank body is also provided with an air outlet communicated with the interior of the tank body. In the urea dissolving and stirring process, part of air in the tank body is heated and expanded and is exhausted through the exhaust port.
The utility model relates to a further improvement that urea solution disposes jar for SNCR deNOx systems lies in: the second paddle is arranged along the radial direction of the rotating shaft and deviates 5-25 degrees towards the top end direction of the tank body.
Drawings
FIG. 1 is a perspective view showing the internal structure of a urea solution preparation tank for an SNCR denitration system according to the present invention;
FIG. 2 is a schematic top view of a urea solution preparation tank for an SNCR denitration system according to the present invention;
fig. 3 is an enlarged schematic view of the structure of the middle rotating shaft of the present invention.
In the figure: 1. a tank body; 11. a throwing port; 12. a demineralized water filling port; 13. a discharge port; 14 insulating layer; 15. a through hole; 16. a magnetic flap level gauge; 17. an inclined surface; 18. a cover plate; 19. an exhaust port; 2. a steam coil; 31. a drive motor; 32. a rotating shaft; 33. a first blade; 34. a second blade.
Detailed Description
To facilitate understanding of the present invention, the following description is made with reference to the accompanying drawings and examples.
Referring to fig. 1 to 3, the utility model provides a urea solution preparation tank for SNCR denitration system, which comprises a tank body 1 and a stirring mechanism; wherein: the top of the tank body 1 is provided with a feeding port 11 and a demineralized water filling port 12, the bottom of the tank body 1 is provided with a discharge port 13, and the bottom end of the inner side of the tank body 1 gradually inclines downwards from one end far away from the discharge port 13 to one end close to the discharge port 13 to form an inclined surface 17; the inner wall of the tank body 1 is also provided with a spirally arranged steam coil 2 for heating urea solution, the outer wall of the tank body 1 is also wrapped with a heat insulation layer 14, the stirring mechanism comprises a driving motor 31 arranged at the top of the tank body 1 and a rotating shaft 32 coaxially connected to an output shaft of the driving motor 31, the rotating shaft 32 comprises a built-in part arranged in the tank body 1, the built-in part sequentially comprises a stirring section and a reverse pushing section from the top end to the bottom end, the stirring section comprises a plurality of first blades 33 arranged on the rotating shaft 32, the plurality of first blades 33 are arranged at intervals along the circumferential direction of the rotating shaft 32, and two adjacent first blades 33 are obliquely arranged at a certain angle; the reverse thrust section comprises a plurality of second paddles 34, the plurality of second paddles 34 are spirally arranged along the circumferential direction of the rotating shaft 32, and the second paddles 34 are arranged along the radial direction of the rotating shaft 32 and are deviated by 5-25 degrees towards the top end direction of the tank body 1. In the embodiment, (1) urea can be added into the tank body 1 through the input port 11, and demineralized water is added into the tank body 1 through the demineralized water filling port 12; (2) the urea solution preparation tank is provided with a steam system and a temperature control system (in the prior art, the detailed description is omitted) which are matched with the steam coil 2, the solution in the tank body 1 is heated through the steam coil 2, the temperature of the solution in the tank body 1 is controlled to be 40-70 ℃, the urea is ensured to be fully dissolved, and the urea is prevented from being crystallized and separated out; (3) by arranging the heat insulation layer 14, the heat loss can be reduced, and the utilization efficiency of heat energy is improved; (4) the first blade 33 and the second blade 34 are used for stirring the solution in the tank body 1, so that the urea solution is uniformly mixed; (5) through laying second paddle 34 along the radial direction of pivot 32 and to the certain angle of top direction skew of jar body 1, realize the mesh of backstepping, concrete can be with the liquid bottom the jar body 1 from bottom to top motion, the mixed and diffusion effect between the inside urea solution of reinforcing jar body 1 for guarantee the degree of consistency of urea solution when urea dissolves.
Further, as shown in fig. 1, through holes 15 are formed in the side wall of the tank body 1 and are arranged at intervals up and down, and a magnetic flap level gauge 16 is hermetically installed between the through holes 15 and used for observing the liquid level height inside the tank body 1 in real time.
Further, a cover plate 18 is arranged at the outlet of the input port 11; specifically, apron 18 demountable installation is in input 11 departments, and is equipped with the sealing strip between the two, and above-mentioned embodiment is current conventional technology, and not the utility model discloses a technical improvement point, does not do specific detail here.
In the utility model, the top of the tank body 1 is also provided with an exhaust port 19 communicated with the inside of the tank body 1.
The utility model relates to a SNCR is theory of operation of urea solution configuration jar for deNOx systems:
firstly, adding urea into a tank body through a feeding port, adding demineralized water into the tank body through a demineralized water filling port, heating solution in the tank body through a steam coil, starting a driving motor, and stirring liquid in the tank body by using a first blade and a second blade until the urea is completely dissolved to realize the full mixing of the urea solution; and finally, stopping driving the motor, and discharging the prepared urea solution to a next working procedure through a discharge hole.
The present invention has been described in detail with reference to the drawings and the embodiments, and those skilled in the art can make various modifications to the present invention based on the above description. Therefore, certain details of the embodiments should not be construed as limitations of the invention, which are intended to be covered by the following claims.
Claims (6)
1. A urea solution preparation tank for an SNCR denitration system is characterized by comprising:
the device comprises a tank body, wherein the top of the tank body is provided with a feeding port and a demineralized water filling port, the bottom of the tank body is provided with a discharging port, the inner wall of the tank body is also provided with a spirally arranged steam coil pipe for heating the urea solution, and the outer wall of the tank body is also wrapped with a heat insulation layer;
the stirring mechanism comprises a driving motor and a rotating shaft, wherein the driving motor is mounted at the top of the tank body, the rotating shaft is coaxially connected with an output shaft of the driving motor, the rotating shaft comprises a built-in part which is built in the tank body, the built-in part sequentially comprises a stirring section and a reverse thrust section from the top end to the bottom end, the stirring section comprises a plurality of first blades which are arranged on the rotating shaft, the first blades are distributed at intervals along the circumferential direction of the rotating shaft, and every two adjacent first blades are distributed in a certain-angle inclined manner; the reverse thrust section comprises a plurality of second paddles, the second paddles are arranged along the circumferential direction of the rotating shaft in a spiral mode, and the second paddles are arranged along the radial direction of the rotating shaft and offset at a certain angle towards the top end of the tank body.
2. The urea solution preparation tank for an SNCR denitration system according to claim 1, characterized in that: two through holes which are arranged at intervals from top to bottom are formed in the side wall of the tank body, and a magnetic turning plate liquid level meter is arranged between the two through holes.
3. The urea solution preparation tank for an SNCR denitration system according to claim 1, characterized in that: jar internal side bottom is from keeping away from the one end of discharge gate is to being close to the one end downward sloping gradually of discharge gate forms an inclined plane.
4. The urea solution preparation tank for an SNCR denitration system according to claim 1, characterized in that: the input port is provided with a cover plate.
5. The urea solution preparation tank for an SNCR denitration system according to claim 1, characterized in that: the top of the tank body is also provided with an air outlet communicated with the interior of the tank body.
6. The urea solution preparation tank for an SNCR denitration system according to claim 1, characterized in that: the second paddle is arranged along the radial direction of the rotating shaft and deviates 5-25 degrees towards the top end direction of the tank body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022033544.1U CN213193409U (en) | 2020-09-16 | 2020-09-16 | Urea solution preparation tank for SNCR (Selective non catalytic reduction) denitration system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022033544.1U CN213193409U (en) | 2020-09-16 | 2020-09-16 | Urea solution preparation tank for SNCR (Selective non catalytic reduction) denitration system |
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| CN213193409U true CN213193409U (en) | 2021-05-14 |
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| CN202022033544.1U Active CN213193409U (en) | 2020-09-16 | 2020-09-16 | Urea solution preparation tank for SNCR (Selective non catalytic reduction) denitration system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115090138A (en) * | 2022-06-14 | 2022-09-23 | 苏州西热节能环保技术有限公司 | Efficient urea dissolving device and method |
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2020
- 2020-09-16 CN CN202022033544.1U patent/CN213193409U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115090138A (en) * | 2022-06-14 | 2022-09-23 | 苏州西热节能环保技术有限公司 | Efficient urea dissolving device and method |
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