Urea dissolving tank
By installing a steam coil in the urea dissolution tank, and directly heating the inside of the tank with external high-temperature steam, the problem of slow urea dissolution speed in the prior art is solved, and a more efficient and uniform heating effect is achieved.
Patent Information
- Application Number
- CN202422036871.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-22
- Publication Date
- 2025-06-17
- Estimated Expiration
- 2034-08-22
AI Technical Summary
In the prior art, the urea dissolution tank directly heats the tank body, resulting in a slower solvent heating rate and insufficient heating, resulting in a slower urea dissolution rate.
A urea dissolution tank is designed, and the steam coil is fixed inside the tank through mounting parts, and the inside of the tank is directly heated by external high-temperature steam to improve heating uniformity.
By directly heating the inside of the tank, the speed and efficiency of urea dissolution are significantly improved, and the problem of uneven heating in the prior art is solved.
Smart Images
Figure CN222984304U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of urea dissolving tanks, in particular to a urea dissolving tank. Background Technique
[0002] At present, the flue gas denitrification method mainly controls the generation of nitrogen oxides at the source through low-nitrogen combustion technology, and then uses selective catalytic reduction method (SCR) or non-selective catalytic reduction method (SNCR) to make the reducing agent react with the nitrogen oxides in the flue gas to generate nitrogen dioxide and water, thereby reducing the emission concentration of nitrogen oxides. The reducing agents used in the denitrification system are mainly urea, liquid ammonia and ammonia, and urea has been more and more widely used due to its high safety and reliability.
[0003] Urea cannot be directly applied to the SCR system. It is necessary to first prepare a urea solution with a specified concentration, and then treat the urea solution by hydrolysis method or pyrolysis method to convert it into ammonia and then inject it into the reactor, where it reacts with nitrogen oxides under the catalysis of a catalyst. Therefore, SCR or SNCR systems using urea as a raw material need to prepare urea solutions.
[0004] In the prior art, the dissolution of urea is usually carried out by directly heating the urea dissolving tank with an electric heating plate, so that the urea dissolving tank heats the urea solution therein, thereby achieving the effect of improving urea dissolution. However, only heating the body of the urea dissolving tank easily causes the heating speed of the solvent to be slow and the heating to be uneven, resulting in a slow urea dissolution speed. For this reason, we propose a urea dissolving tank. Content of the Utility Model
[0005] Aiming at the deficiencies of the prior art, the utility model provides a urea dissolving tank. The steam coil can be fixed inside the tank body through the installation part. When heating the inside of the tank body, high-temperature steam from the outside enters the inside of the steam coil through the steam interface pipe. The high-temperature steam flowing inside the steam coil can directly heat the inside of the tank body. The steam after absorbing heat is discharged through the steam drain interface pipe. Furthermore, the inside of the tank body can be directly heated through the steam coil, which is beneficial to improving the heat uniformity of the tank body and solves the problems in the background.
[0006] To achieve the above purposes, the utility model is realized through the following technical solutions:
[0007] A urea dissolution tank, comprising a tank body, wherein a steam coil is fixedly installed inside the tank body through a plurality of mounting members. One end of the steam coil is fixedly communicated with a steam inlet pipe, and the other end of the steam coil is fixedly communicated with a steam drain interface pipe. The mounting members include steel plates, angle steels and pipe clamps. The steel plates are fixedly welded to the inner wall of the tank body, the angle steels are fixedly welded to the steel plates, the pipe clamps are sleeved on the outer surface of the steam coil, two groups of perforations are formed in the angle steels, the two ends of the pipe clamps are inserted into the corresponding perforations, a threaded portion is arranged on the outer surface of the pipe clamps, and locking nuts are screwed on the two ends of the pipe clamps respectively, and the locking nuts are in close contact with the angle steels.
[0008] Preferably, a stirrer opening is formed at the center of the top of the tank body, a drain inlet pipe is fixedly communicated with the top of the tank body, a urea tank truck feeding interface is installed at the top of the tank body, and a urea conveying receiving pipe is installed at the top end of the tank body.
[0009] Preferably, a urea solution dissolution pump return interface pipe is fixedly communicated with the top of the tank body, and a urea solution dissolution pump interface pipe is fixedly communicated with the outer surface of the tank body.
[0010] Preferably, an exhaust fan interface pipe is installed at the top end of the tank body.
[0011] Preferably, an inspection opening is installed on the tank body.
[0012] Preferably, a liquid level gauge upper interface and a liquid level gauge lower interface are installed on the upper and lower parts of the outer surface of the tank body.
[0013] Preferably, a thermometer interface and a thermal resistance interface are installed on the outer surface of the tank body.
[0014] Preferably, a discharge pipe and an overflow pipe are installed on the tank body.
[0015] Preferably, a top frame is installed at the top of the tank body, a plurality of climbing frames are installed on the outer surface of the tank body, and climbing rods are fixedly welded on the climbing frames.
[0016] Beneficial effects
[0017] The utility model provides a urea dissolution tank. Compared with the prior art, the following beneficial effects are achieved:
[0018] 1. For this urea dissolution tank, the steam coil can be fixed inside the tank body through the mounting members. When heating the inside of the tank body, high-temperature steam from the outside enters the inside of the steam coil through the steam interface pipe, and the high-temperature steam flowing inside the steam coil can directly heat the inside of the tank body. The steam after absorbing heat is discharged through the steam drain interface pipe. Thus, the inside of the tank body can be directly heated through the steam coil, which is beneficial to improving the heat uniformity of the tank body.
[0019] 2. The urea dissolving tank has an opening for the agitator, which facilitates the insertion of the agitator shaft into the interior of the tank body, enabling heating of the interior of the tank body. The provided hydrophobic water inlet pipe facilitates the addition of water to the interior of the tank body. The urea tank truck feeding interface and the urea conveying receiving pipe facilitate the addition of urea to the interior of the tank body.
[0020] 3. The urea dissolving tank can be conveniently connected to the dissolution reflux pump through the urea solution dissolution pump reflux interface pipe and the urea solution dissolution pump interface pipe, facilitating the reflux of the solution at the bottom of the tank body back into the tank body for re-discharge, thereby improving the uniform heating of the solution. Description of the Drawings
[0021] Figure 1 It is a front view structural schematic diagram of the main body of the present utility model;
[0022] Figure 2 It is a top view structural schematic diagram of the main body of the present utility model;
[0023] Figure 3 It is a bottom view structural schematic diagram of the main body of the present utility model;
[0024] Figure 4 It is a cross-sectional structural schematic diagram of the main body of the present utility model;
[0025] Figure 5 It is a structural schematic diagram of the connection between the steam coil and the mounting member of the present utility model;
[0026] Figure 6 It is of the present utility model Figure 5 Enlarged schematic diagram of the structure at A in.
[0027] In the figure: 1. Tank body; 2. Lower interface of liquid level gauge; 3. Thermometer interface; 4. Resistance thermometer interface; 5. Steam inlet pipe; 6. Upper interface of liquid level gauge; 7. Urea solution dissolution pump reflux interface pipe; 8. Hydrophobic water inlet pipe; 9. Inspection port; 10. Urea tank truck feeding interface; 11. Opening for agitator; 12. Exhaust fan interface pipe; 13. Top frame; 14. Urea conveying receiving pipe; 15. Overflow pipe; 16. Urea solution dissolution pump interface pipe; 17. Discharge pipe; 18. Steam trap interface pipe; 19. Crawling rod; 20. Climbing frame; 21. Steam coil; 22. Steel plate; 23. Angle steel; 24. Pipe clamp; 25. Locking nut. Detailed Implementation Modes
[0028] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.
[0029] Please refer to Figures 1-6 , the present utility model provides a technical solution: a urea dissolution tank, including a tank body 1, inside which a steam coil 21 is fixedly installed through a plurality of mounting members. One end of the steam coil 21 is fixedly communicated with a steam inlet pipe 5, and the other end of the steam coil 21 is fixedly communicated with a steam drain pipe 18. The mounting members include a steel plate 22, an angle steel 23, and a pipe clamp 24. The steel plate 22 is fixedly welded to the inner wall of the tank body 1, the angle steel 23 is fixedly welded to the steel plate 22, the pipe clamp 24 is sleeved on the outer surface of the steam coil 21. Two groups of through holes are formed in the angle steel 23, and both ends of the pipe clamp 24 are inserted through the corresponding through holes. A threaded portion is provided on the outer surface of the pipe clamp 24, and locking nuts 25 are screwed onto both ends of the pipe clamp 24, and the locking nuts 25 are in close contact with the angle steel 23.
[0030] During use, the pipe clamp 24 is sleeved on the outside of the steam coil 21. The pipe clamp 24 is in a 'U' shape. Then the pipe clamp 24 is passed through the through holes in the angle steel 23, and then locked by the locking nuts 25, so as to fix the steam coil 21 inside the tank body 1. When heating the inside of the tank body 1, high-temperature steam from the outside enters the inside of the steam coil 21 through the steam inlet pipe 5. The high-temperature steam flowing inside the steam coil 21 can directly heat the inside of the tank body 1. The steam after absorbing heat is discharged through the steam drain pipe 18. Thus, the inside of the tank body 1 can be directly heated through the steam coil 21, which is beneficial to improving the uniformity of heat absorption of the tank body 1.
[0031] A stirrer opening 11 is provided at the center of the top of the tank body 1. A drain inlet pipe 8 is fixedly communicated with the top of the tank body 1. A urea tank truck feeding interface 10 is installed at the top of the tank body 1. A urea conveying receiving pipe 14 is installed at the top end of the tank body 1.
[0032] The provided stirrer opening 11 can facilitate the insertion of the stirring shaft of the stirrer into the inside of the tank body 1, so as to heat the inside of the tank body 1. The provided drain inlet pipe 8 can facilitate the addition of water to the inside of the tank body 1. The provided urea tank truck feeding interface 10 and the urea conveying receiving pipe 14 can facilitate the addition of urea to the inside of the tank body 1.
[0033] At the top of the tank body 1, there is a fixed connection with a urea solution dissolution pump return interface pipe 7. On the outer surface of the tank body 1, there is a fixed connection with a urea solution dissolution pump interface pipe 16. Through the urea solution dissolution pump return interface pipe 7 and the urea solution dissolution pump interface pipe 16, it is convenient to connect the dissolution return pump, which facilitates the return of the solution at the bottom of the tank body 1 to the tank body 1 for re-discharge, thereby improving the heat uniformity of the solution.
[0034] At the top of the tank body 1, there is an exhaust fan interface pipe 12 installed. Through the set exhaust fan interface pipe 12, it is convenient to extract air from the inside of the tank body 1.
[0035] An inspection port 9 is installed on the tank body 1, which is convenient for personnel to inspect the inside of the tank body 1.
[0036] On the upper and lower parts of the outer surface of the tank body 1, a liquid level gauge upper interface 6 and a liquid level gauge lower interface 2 are installed respectively. Through the set liquid level gauge upper interface 6 and liquid level gauge lower interface 2, it is convenient to install a liquid level gauge.
[0037] On the outer surface of the tank body 1, a thermometer interface 3 and a thermal resistance interface 4 are installed. Through the thermometer interface 3 and the thermal resistance interface 4, the temperature inside the tank body 1 can be detected.
[0038] A discharge pipe 17 and an overflow pipe 15 are installed on the tank body 1.
[0039] At the top of the tank body 1, a top frame 13 is installed. On the outer surface of the tank body 1, several climbing frames 20 are installed. A climbing rod 19 is fixedly welded on the climbing frame 20. Through the climbing frame 20 and the climbing rod 19, it is convenient for personnel to climb to the top of the tank body 1.
[0040] Working principle: When in use, the pipe clamp 24 is sleeved on the outside of the steam coil 21. The pipe clamp 24 is in a 'U' shape. Then, the pipe clamp 24 is passed through the perforation on the angle steel 23, and then locked by the locking nut 25, thereby fixing the steam coil 21 inside the tank body 1. When heating the inside of the tank body 1, the external high-temperature steam enters the inside of the steam coil 21 through the steam interface pipe 5. The high-temperature steam flowing inside the steam coil 21 can directly heat the inside of the tank body 1. The steam after absorbing heat is discharged through the steam trap interface pipe 18. Thus, the inside of the tank body 1 can be directly heated through the steam coil 21;
[0041] The opened agitator opening 11 facilitates the insertion of the agitator shaft into the inside of the tank body 1, thereby heating the inside of the tank body 1. The set hydrophobic inlet pipe 8 facilitates the addition of water to the inside of the tank body 1. The set urea tank truck feeding interface 10 and the urea conveying receiving pipe 14 facilitate the addition of urea to the inside of the tank body 1. Through the urea solution dissolution pump return interface pipe 7 and the urea solution dissolution pump interface pipe 16, it is convenient to connect the dissolution return pump, which facilitates the return of the solution at the bottom of the tank body 1 to the tank body 1 for re-discharge, thereby improving the heat uniformity of the solution;
[0042] The liquid level gauge can be conveniently installed through the upper interface 6 and the lower interface 2 of the liquid level gauge, and personnel can conveniently climb to the top of the tank body 1 through the climbing frame 20 and the crawling frame 19.
[0043] It should be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article or device.
[0044] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A urea dissolution tank, comprising a tank body (1), characterized in that: A steam coil (21) is fixedly installed inside the tank body (1) via a plurality of mounting parts. One end of the steam coil (21) is fixedly connected to a steam inlet interface pipe (5), and the other end of the steam coil (21) is fixedly connected to a steam drain interface pipe (18). The mounting parts include a steel plate (22), an angle steel (23), and a pipe clamp (24). The steel plate (22) is fixedly welded to the inner wall of the tank body (1). The angle steel (23) is fixedly welded to the steel plate (22). The pipe clamp (24) is sleeved on the outer surface of the steam coil (21). Two groups of through holes are formed on the angle steel (23). Both ends of the pipe clamp (24) are penetrated through the corresponding through holes. The outer surface of the pipe clamp (24) is provided with a threaded portion. Both ends of the pipe clamp (24) are threadedly screwed with locking nuts (25). The locking nuts (25) are tightly abutted against the angle steel (23).
2. A urea dissolution tank according to claim 1, characterized in that: A stirrer opening (11) is provided at the center of the top of the tank body (1), a hydrophobic inlet pipe (8) is fixedly connected to the top of the tank body (1), a urea tank truck loading interface (10) is installed on the top of the tank body (1), and a urea delivery material receiving port pipe (14) is installed at the top end of the tank body (1).
3. A urea dissolution tank according to claim 2, characterized in that: The top of the tank body (1) is fixedly connected to a urea solution dissolution pump reflux interface pipe (7), and the outer surface of the tank body (1) is fixedly connected to a urea solution dissolution pump interface pipe (16).
4. A urea dissolution tank according to claim 3, characterized in that: An exhaust fan interface pipe (12) is installed at the top end of the tank body (1).
5. A urea dissolution tank according to claim 4, characterized in that: An inspection port (9) is installed on the tank body (1).
6. A urea dissolution tank according to claim 5, characterized in that: An upper interface (6) of a liquid level gauge and a lower interface (2) of a liquid level gauge are respectively installed on the upper and lower portions of the outer surface of the tank body (1).
7. A urea dissolution tank according to claim 6, characterized in that: A thermometer interface (3) and a thermal resistor interface (4) are installed on the outer surface of the tank body (1).
8. A urea dissolution tank according to claim 7, characterized in that: A discharge pipe (17) and an overflow pipe (15) are installed on the tank body (1).
9. A urea dissolution tank according to claim 8, characterized in that: A top frame (13) is installed on the top of the tank body (1), and a plurality of climbing frames (20) are installed on the outer surface of the tank body (1), and climbing rods (19) are fixedly welded to the climbing frames (20).