CN210683616U - Special-shaped granulating nozzle capable of reducing temperature of urea material and urea granulating device using same - Google Patents
Special-shaped granulating nozzle capable of reducing temperature of urea material and urea granulating device using same Download PDFInfo
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- CN210683616U CN210683616U CN201921645672.2U CN201921645672U CN210683616U CN 210683616 U CN210683616 U CN 210683616U CN 201921645672 U CN201921645672 U CN 201921645672U CN 210683616 U CN210683616 U CN 210683616U
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- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 title claims abstract description 80
- 239000004202 carbamide Substances 0.000 title claims abstract description 80
- 239000000463 material Substances 0.000 title claims abstract description 24
- 238000005469 granulation Methods 0.000 claims abstract description 86
- 230000003179 granulation Effects 0.000 claims abstract description 86
- 239000007921 spray Substances 0.000 claims abstract description 26
- 210000002700 urine Anatomy 0.000 claims description 2
- 239000000155 melt Substances 0.000 claims 2
- 206010066054 Dysmorphism Diseases 0.000 claims 1
- 238000001816 cooling Methods 0.000 abstract description 17
- 238000005507 spraying Methods 0.000 abstract description 10
- 230000004048 modification Effects 0.000 abstract description 3
- 238000012986 modification Methods 0.000 abstract description 3
- 239000003570 air Substances 0.000 description 14
- 239000008187 granular material Substances 0.000 description 11
- 239000002245 particle Substances 0.000 description 11
- 239000007788 liquid Substances 0.000 description 9
- 238000002844 melting Methods 0.000 description 7
- 230000008018 melting Effects 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- 230000009471 action Effects 0.000 description 4
- 230000008569 process Effects 0.000 description 3
- 239000012080 ambient air Substances 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000003337 fertilizer Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000002407 reforming Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
The utility model relates to a special-shaped granulating nozzle for reducing the temperature of urea materials and a urea granulating device using the same; comprises an upper granulating nozzle connected with a connecting shaft of a granulator, and a lower granulating nozzle communicated with the inside is arranged at the lower part of the upper granulating nozzle; the upper granulation nozzle and the lower granulation nozzle have different tapers; the device has the advantages of increasing the spraying area of the spray head, improving the heat exchange efficiency and the heat exchange area of cooling air entering the granulation tower, realizing low modification investment, realizing large-batch continuous operation and effectively reducing the temperature of finished urea products.
Description
Technical Field
The utility model belongs to the technical field of the granulation shower nozzle, concretely relates to reduce special-shaped granulation shower nozzle of urea material temperature and use its urea prilling granulator.
Background
China is the biggest country in the world in which fertilizers are produced and used, the total urea yield in China is about 6000 million tons at present, more than 80% of urea is granulated in a tower type mode, the basic principle is that urea solution with the concentration of more than 99.6% is conveyed to the top of a granulating tower through a melting pump, enters a feeding hole of a granulating machine at the top of the granulating tower, then enters a granulating nozzle through the granulating machine, urine is sprayed out from small holes in the nozzle by utilizing centrifugal force under the rotating action of the nozzle to form liquid drops, the liquid drops are in countercurrent contact with air in the falling process, and urea particles are finally formed through the processes of liquid-to-solid, solid cooling and the like.
The cooling air entering the prilling tower is mainly from ambient air, and the ambient air has a great influence with the change of seasons. Therefore, the common problem in the industry at present is that the temperature of the urea particles is higher in summer, which affects the product quality and finally causes the load of the device to be reduced. At present, the tower-type urea device basically adopts a reverse-cone-type rotary spray head with an angle of 7-15 degrees, urea solution is thrown out of the spray head under the action of centrifugal force, and based on the spraying principle of the spray head, almost no product exists at the central position of a urea prilling tower, so that cooling air waste in the area is caused.
In order to overcome the defect of high material temperature in summer, the following methods are generally considered by enterprises: 1. reducing the particle size of the urea product, wherein according to research, the particle size is reduced by 3-4 ℃ every time the particle size is reduced by 0.1 mm; but at the same time brings the following problems: (1) after the particle size is reduced, subsequent screening equipment of the granulation tower needs to be adjusted in a large scale; the investment cost is increased; (2) the particle size is reduced and the product appearance of the urea is affected, further affecting the product sales. 2. The diameter of a spray head is changed, the length of the spray head is properly lengthened, a spraying blind area is reduced, and a urea product is cooled by cooling air, so that the aim of reducing the temperature of the material is fulfilled; however, this method has the following problems: (1) the production difficulty of a spray nozzle granulation factory is high, and the rotary spray nozzle with the inverted cone-shaped spray nozzle is influenced by the problems of concentricity and the like in the production process; (2) the spraying blind area still exists, the material temperature can be reduced to a certain degree, and the range of reducing the material temperature is within 4 ℃ (the temperature reduction range is smaller); (3) the overlong length of the spray nozzle is also undesirable due to the restriction of the field conditions of a urea manufacturer, and when the length of the spray nozzle is overlong, urea is easily sprayed onto the cross beam of the prilling tower to cause building corrosion and reduce the concentricity of the spray nozzle.
Based on the method and the existing problems, the temperature of the urea granules in the prilling tower is too high in summer, and a feasible solution cannot be found all the time.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome the defect among the prior art, and provide one kind and adopt different tapering to make up, thereby increase the shower nozzle spray area, improve the heat exchange efficiency and the heat transfer area who enters into the prilling tower cooling air, can realize reforming transform the investment few, can realize big batch continuous operation and effectively reduce the urea finished product material temperature reduce the special-shaped granulation shower nozzle of urea material temperature and use its urea prilling granulator.
The purpose of the utility model is realized like this: comprises an upper granulating nozzle connected with a connecting shaft of a granulator, and a lower granulating nozzle communicated with the inside is arranged at the lower part of the upper granulating nozzle; the upper granulating nozzle and the lower granulating nozzle have different tapers.
Preferably, the upper granulating nozzle and the lower granulating nozzle are connected in series through a connecting flange.
Preferably, a motor is arranged on the side of the granulator and is a variable frequency motor.
Preferably, the outer walls of the upper granulating nozzle and the lower granulating nozzle are uniformly distributed with spray holes.
Preferably, the upper granulation nozzle has a taper smaller than that of the lower granulation nozzle.
Preferably, the conicity of the upper granulation nozzle is 9 ° and the conicity of the lower granulation nozzle is 13 °.
The utility model also provides an use urea prilling granulator who reduces the special-shaped granulation shower nozzle of urea material temperature, including the melting pump, the urea melt liquid output of melting pump passes through the feed inlet at granulator top and links to each other with the granulator, and the bottom of granulator is passed through the connecting axle and is linked to each other with special-shaped granulation shower nozzle.
Through the cooling process of studying urea granule, the utility model discloses a from the effective area of contact who increases cooling air and urea granule, reduce technical means such as the blind area that urea distributes in the prilling tower, researched and developed the utility model discloses, the utility model discloses can be on the basis that does not change current prilling granulator, carry out the granulation through the conical surface that realizes possessing different angles on a shower nozzle to minimum investment transformation cost, and can effectively reduce the finished product material temperature of urea under the prerequisite that does not influence granulation equipment normal operating.
The special-shaped granulation nozzle for reducing the temperature of the urea material and the urea granulation device using the special-shaped granulation nozzle are manufactured according to the scheme, and the granulation nozzle is combined by adopting different tapers, so that each part in a granulation tower can be fully utilized, the dead zone of urea particle distribution of the granulation tower is reduced, the utilization rate of cooling air is improved, the temperature of a urea product in summer is reduced, the product quality of urea is improved, and the operation load of granulation equipment is reduced; the device has the advantages of increasing the spraying area of the spray head, improving the heat exchange efficiency and the heat exchange area of cooling air entering the granulation tower, realizing low modification investment, realizing large-batch continuous operation and effectively reducing the temperature of finished urea products.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Detailed Description
In order to clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will be described with reference to the accompanying drawings, in which like reference numerals refer to like parts in the drawings. For the sake of simplicity, only the parts related to the utility model are schematically shown in the drawings, and they do not represent the actual structure as a product.
As shown in fig. 1, the utility model relates to a special-shaped granulating nozzle for reducing the temperature of urea material and a urea granulating device using the same, wherein the special-shaped granulating nozzle comprises an upper granulating nozzle 1 connected with a connecting shaft 5 of a granulator 2, and the lower part of the upper granulating nozzle 1 is provided with a lower granulating nozzle 9 communicated with the inside; the upper granulation nozzle 1 and the lower granulation nozzle 9 have different tapers. The urea melt liquid in the granulator 2 can be sprayed out through the two granulation nozzles by arranging the upper granulation nozzle 1 and the lower granulation nozzle 9 to realize effective granulation, preferably, the tapers of the upper granulation nozzle 1 and the lower granulation nozzle 9 are different, namely, the granulation nozzle with the small taper can realize large-scale spraying, and the utilization rate of cooling air is ensured while the yield of urea particles is ensured; the granulation nozzle with large taper can realize small-range spraying so as to reduce blind areas in the granulation tower and realize effective utilization of cooling air in the granulation tower; meanwhile, the upper granulation nozzle 1 and the lower granulation nozzle 9 and the urea melt in the granulator 2 can be connected in parallel or in series; no matter what connection mode is adopted, the amount of the urea melt entering the granulation nozzle with small taper is larger than the amount of the urea melt entering the granulation nozzle with large taper.
Furthermore, the upper granulating nozzle 1 and the lower granulating nozzle 9 are connected in series through a connecting flange 8. The urea melt in the granulator 2 enters the upper granulation nozzle 1 through the connecting shaft 5, one part of the urea melt entering the upper granulation nozzle 1 is thrown out through the granulation nozzle for granulation, and the other part of the urea melt enters the lower granulation nozzle 9 through the connecting flange 8 and is thrown out through the lower granulation nozzle 9 for granulation.
Further, a motor 3 is arranged on the side of the granulator 2, and the motor 3 is a variable frequency motor. Motor 3 is used for driving the granulation shower nozzle rotatory, throws away the urea melt and realizes the granulation, and the preferred inverter motor of motor 3 can realize adjusting the rotational speed of granulation shower nozzle to when the prevention comes from the urea melt flow of melting pump 7 to fluctuate, the rotational speed of regulation granulation shower nozzle that can be timely, thereby avoid producing the influence to the prilling granulator.
Furthermore, the outer walls of the upper granulating nozzle 1 and the lower granulating nozzle 9 are uniformly distributed with spray holes 6. Preferably, the opening angles of the spray holes 6 are consistent, that is, the spray holes 6 are uniformly distributed on the outer walls of the upper granulation nozzle 1 and the lower granulation nozzle 9, and the opening angles of the spray holes 6 are the same, so that the controllability of spraying the urea melt can be realized, and the consistency of urea particle products can be improved, thereby ensuring the quality of the urea products.
Further, the taper of the upper granulation nozzle 1 is smaller than that of the lower granulation nozzle 9. Preferably, the upper granulation nozzle 1 has small taper, and can realize large-range spraying; the lower granulation nozzle 9 has large taper to realize the spraying in the lower range, and the cooling air in the granulation tower can be effectively utilized through the arrangement; under the unchangeable condition of former urea granule output promptly, realize the effective cooling to the material through reducing the blind area, improving the utilization ratio of cooling water.
Further, the taper of the upper granulation nozzle 1 is 9 °, and the taper of the lower granulation nozzle 9 is 13 °.
The utility model provides an use urea prilling granulator who reduces special-shaped granulation shower nozzle of urea material temperature, includes melting pump 7, and melting pump 7's urea melt output passes through feed inlet 4 at granulator 2 top and links to each other with granulator 2, and the bottom of granulator 2 is passed through connecting axle 5 and is linked to each other with special-shaped granulation shower nozzle.
The utility model discloses a theory of operation does: feeding urea melt liquid with the concentration not less than 99.6% from a urea evaporation device into a feeding hole 4 at the upper end of a granulator 2 through a melting pump 7, wherein the granulator 2 comprises a variable frequency motor 3 and a connecting shaft 5, the urea melt liquid enters the granulator 2 through the feeding hole 4 of the granulator 2 and then enters an upper granulation nozzle 1 along the connecting shaft 5, the upper granulation nozzle 1 rotates, and a part of the urea melt liquid enters a granulation tower through a spray hole 6 under the action of centrifugal force generated by the rotation of the upper granulation nozzle 1 to finally form granules; the other part of the urea melt enters a lower granulation nozzle 9 through a connecting flange 8, the lower granulation nozzle 9 rotates and enters a granulation tower through a spray hole 6 for granulation under the action of centrifugal force generated by the lower granulation nozzle 9; the essence of the utility model lies in that under the condition of not changing the yield of urea particles, a part of urea melt liquid is granulated through the upper granulation nozzle 1, so as to improve the utilization rate of cooling air; the other part of the urea melt liquid is granulated through the lower granulating nozzle 9, so that the aim of cooling air in the blind area can be effectively fulfilled; the improvement can effectively utilize the existing granulation tower equipment, does not need to modify the subsequent equipment of the granulation tower, and has the characteristics of simple structure, reasonable design, effective reduction of material temperature and normal operation of equipment under the premise of improving the use efficiency of cooling air and ensuring the normal operation of the equipment.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected," "connecting," and the like are to be construed broadly, and may be, for example, fixedly connected, integrally connected, or detachably connected; or communication between the interior of the two elements; they may be directly connected or indirectly connected through an intermediate, and those skilled in the art can understand the specific meaning of the above terms in the present invention according to the specific situation. The above examples are only specific illustrations of feasible embodiments of the present invention, and they are not intended to limit the scope of the present invention, and all equivalent embodiments, modifications and alterations without departing from the technical spirit of the present invention are intended to be included in the scope of the present invention.
Examples of the experiments
The existing granulation device is adopted, the specification of a granulation tower is 19 meters, the taper of a granulation nozzle is 9 degrees, 1500 tons of urea granules are produced in one day, the room temperature is 30 ℃, and the average temperature of finished urea granules is 62 ℃.
Adopt the utility model discloses a prilling granulator, the specification of prilling tower is 19 meters, and the tapering of going up prilling spray nozzle 1 is 9, and the tapering of lower prilling spray nozzle 9 is 13, and 1500 tons of urea granules are produced one day, and the urea granule of producing in going up prilling spray nozzle 1 is 1150 and 1200 tons, and the urea granule of producing in the lower prilling spray nozzle 9 is 300 and 350 tons, and the room temperature is 30 ℃, and the average temperature of finished product urea granule is 50 ℃.
Claims (7)
1. The utility model provides a reduce dysmorphism granulation shower nozzle of plain material temperature of urine which characterized in that: the granulating nozzle comprises an upper granulating nozzle (1) connected with a connecting shaft (5) of a granulator (2), and a lower granulating nozzle (9) communicated with the inside is arranged at the lower part of the upper granulating nozzle (1); the upper granulating nozzle (1) and the lower granulating nozzle (9) have different tapers.
2. The special-shaped granulating nozzle for reducing the temperature of urea materials as claimed in claim 1, wherein: the upper granulating nozzle (1) and the lower granulating nozzle (9) are connected in series through a connecting flange (8).
3. The special-shaped granulating nozzle for reducing the temperature of urea materials as claimed in claim 1, wherein: the granulator (2) is characterized in that a motor (3) is arranged on the side part of the granulator, and the motor (3) is a variable frequency motor.
4. The special-shaped granulating nozzle for reducing the temperature of urea materials as claimed in claim 1, wherein: and spray holes (6) are uniformly distributed on the outer walls of the upper granulation nozzle (1) and the lower granulation nozzle (9).
5. The special-shaped granulating nozzle for reducing the temperature of urea materials as claimed in claim 1, wherein: the conicity of the upper granulation nozzle (1) is smaller than that of the lower granulation nozzle (9).
6. The special-shaped granulating nozzle for reducing the temperature of urea materials as claimed in claim 5, wherein: the conicity of the upper granulation nozzle (1) is 9 degrees, and the conicity of the lower granulation nozzle (9) is 13 degrees.
7. The utility model provides an use urea prilling granulator who reduces special-shaped granulation shower nozzle of urea material temperature which characterized in that: comprises a melt pump (7), the urea melt output end of the melt pump (7) is connected with the granulator (2) through a feed inlet (4) at the top of the granulator (2), and the bottom of the granulator (2) is connected with the special-shaped granulation nozzle as claimed in any one of claims 1 to 6 through a connecting shaft (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921645672.2U CN210683616U (en) | 2019-09-29 | 2019-09-29 | Special-shaped granulating nozzle capable of reducing temperature of urea material and urea granulating device using same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921645672.2U CN210683616U (en) | 2019-09-29 | 2019-09-29 | Special-shaped granulating nozzle capable of reducing temperature of urea material and urea granulating device using same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210683616U true CN210683616U (en) | 2020-06-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921645672.2U Active CN210683616U (en) | 2019-09-29 | 2019-09-29 | Special-shaped granulating nozzle capable of reducing temperature of urea material and urea granulating device using same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210683616U (en) |
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- 2019-09-29 CN CN201921645672.2U patent/CN210683616U/en active Active
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