CN202214298U - Device for lowering temperature of urea particles - Google Patents
Device for lowering temperature of urea particles Download PDFInfo
- Publication number
- CN202214298U CN202214298U CN2011200201233U CN201120020123U CN202214298U CN 202214298 U CN202214298 U CN 202214298U CN 2011200201233 U CN2011200201233 U CN 2011200201233U CN 201120020123 U CN201120020123 U CN 201120020123U CN 202214298 U CN202214298 U CN 202214298U
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- Prior art keywords
- fluidized
- bed
- urea
- air
- urea granules
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Abstract
The utility model discloses a device for lowering temperature of urea particles, which comprises a fluidized bed, a fluidized bed air chamber, an air cap, a lowering pipe and an air blower. The fluidized bed is located at the bottom of a urea granulation tower, and the fluidized bed air chamber is located at the lower portion of the fluidized bed and communicated with the air blower. The air cap is located on the upper surface of the fluidized bed and communicated with the fluidized bed air chamber. A plurality of holes are further arranged on the air cap, the lowering pipe penetrates through the upper surface and the lower surface of the fluidized bed, wherein the upper end of the lowering pipe is higher than the upper surface of the fluidized bed. The device for lowering the temperature of the urea particles is simple in structure, easy to control and capable of effectively lowering the temperature of the urea particles.
Description
Technical field
The utility model relates to a kind of device that reduces the urea granules temperature.
Background technology
Urea granules is that urea melting liquid is sprayed in the prilling tower at the carbamide granulation top of tower through urea granulation sprayer; Urea droplets is in prilling tower in the decline process; Contact with the air inversion that gets into from the prilling tower bottom; Carry out cold and hot exchange through natural air cooled, reach and make urine be cooled to the particulate purpose.Because receive the restriction of urea prilling tower design, construction specification, when urea system throughput increased, urea prilling tower just can not satisfy the needs of urea production; Cause out high 45-60 ℃ of tower finished urea particle temperature; Particularly summer the urea granules temperature up to 80 ℃ about, make urea product caking, especially in packing; More be prone to caking phenomenon takes place, have a strong impact on the finished urea quality.
Summary of the invention
The utility model problem to be solved is to above-mentioned the problems of the prior art a kind of device that can effectively reduce the urea granules temperature to be provided.
The device of reduction urea granules temperature of the present invention; Comprise fluidized-bed, fluidized-bed air compartment, blast cap, downtake, air-blaster; Said fluidized-bed is positioned at the bottom of urea prilling tower, and said fluidized-bed air compartment is positioned at the bottom of said fluidized-bed and is communicated with said air-blaster, and said blast cap is positioned at the upper surface of said fluidized-bed and is communicated with said fluidized-bed air compartment; Also have a plurality of holes on the said blast cap; Said downtake runs through the upper and lower surface of said fluidized-bed, and wherein, the upper end of said downtake is higher than the upper surface of said fluidized-bed.
The upper end of said downtake exceeds the upper surface 50-100mm of said fluidized-bed.
The diameter in the hole on the said blast cap is 3-5mm.
The device of the reduction urea granules temperature of the utility model is simple to operate, is easy to control, guarantees that the continous-stable of producing moves, and can effectively reduce the temperature of urea granules.
Description of drawings
Fig. 1 is the structural representation of device of the reduction urea granules temperature of the utility model.
Embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is described further.
Fig. 1 is the structural representation of device of the reduction urea granules temperature of the utility model.As shown in Figure 1; The device of the reduction urea granules temperature of the utility model comprises devices such as fluidized-bed 1, fluidized-bed air compartment 2, blast cap 3, downtake 4, air-blaster 6, and fluidized-bed 1 is positioned at the bottom of urea prilling tower 7, and fluidized-bed air compartment 2 is positioned at the bottom of fluidized-bed 1 and is communicated with air-blaster 6; Blast cap 3 is positioned at the upper surface of fluidized-bed 1 and is communicated with said fluidized-bed air compartment 2; Also have a plurality of holes on the blast cap 3, downtake 4 runs through the upper and lower surface of fluidized-bed 1, and air-blaster 6 blasts air in the fluidized-bed 1; Blast air earlier through fluidized-bed air compartment 2, get in the urea prilling tower 7 through a plurality of holes that are provided with on the blast cap 3 then.The diameter in the hole on the blast cap 3 is preferably 3-5mm, and according to the air capacity that blasts, the diameter in the hole on the blast cap 3 can be any number in the 3-5mm scope.
The upper end of downtake 4 is higher than the upper surface of said fluidized-bed; Thereby spray urea droplets freely falling body under action of gravity of getting off from urea prilling tower 7 top prilling spries, contact, cool off with the air inversion that gets into from said carbamide granulation tower bottom; Become urea granules; Drop down onto the upper surface of fluidized-bed 1, form the urea granules layer, the height of upper surface that the upper end of the thickness of urea granules layer and downtake 4 exceeds said fluidized-bed is suitable.Preferably, the upper end of downtake 4 exceeds the upper surface 50-100mm of said fluidized-bed, so the urea granules layer thickness also is approximately 50-100mm.The amount of the air that air-blaster 6 blasts should be blown the urea granules layer of fluidized-bed 1 upper surface, makes the urea granules of fluidized-bed 1 upper surface be the boiling shape.Then, the refrigerative urea granules is fallen on the rotary conveyor 5 to carry through downtake 4.
Utilize the device of the reduction urea granules temperature of the utility model; Can utilize the energy that blasts air to greatest extent, the urea downtake exceeds the fluidized-bed upper surface, makes urea granules form certain thickness at the fluidized-bed upper surface; It exceeds size control at 50-100mm; In certain thickness urea granules layer, urea granules can collide each other, reduces the urea granules temperature.And this device is simple to operate, is easy to control, guarantees the continous-stable operation of producing.The device of the utility model is applicable to produces all types of urea, comprises slow-release carbamide.
In general; Utilize the device of the reduction urea granules temperature of the utility model, guaranteed to blast air and made the urea granules in the urea granules layer be the boiling shape, urea granules rolls in granular layer under the state with each other collision repeatedly; Can guarantee that the urea granules rate of temperature drop in the granular layer reaches 90%; Finally reach the purpose that urea granules reduces temperature, make the urea granules temperature, or even 80 ℃ of summer are reduced to below 40 ℃ by 45-60 ℃.
The upper end that hereinafter will provide downtake exceeds the embodiment under the various combination of diameter in height and the hole on the blast cap of upper surface of said fluidized-bed.
Because of the urea downtake exceeds plane 85mm on the fluidized-bed, make urea granules on fluidized-bed, form the thickness of 85mm; Air-blaster blasts an amount of air according to actual production situation; Hole through air compartment diameter 3mm above blast cap gets into the urea granules layer; Blow urea granules and be the boiling shape; Make the urea product temperature reduce to 39 ℃, reach the purpose that makes the urea granules cooling, guarantee that the quality of urea product meets the requirements.
Because of the urea downtake exceeds plane 95mm on the fluidized-bed, make urea granules on fluidized-bed, form the thickness of 95mm; Air-blaster blasts an amount of air according to actual production situation; Hole through air compartment diameter 5mm above blast cap gets into the urea granules layer; Blow urea granules and be the boiling shape; Make the urea product temperature reduce to 37.5 ℃, reach the purpose that makes the urea granules cooling, guarantee that the quality of urea product meets the requirements.
Because of the urea downtake exceeds plane 100mm on the fluidized-bed, make urea granules on fluidized-bed, form the thickness of 100mm; Air-blaster blasts an amount of air according to actual production situation; Hole through air compartment diameter 3mm above blast cap gets into the urea granules layer; Blow urea granules and be the boiling shape; Make the urea product temperature reduce to 35 ℃, reach the purpose that makes the urea granules cooling, guarantee that the quality of urea product meets the requirements.
The above; Be merely the preferable embodiment of the utility model; But the protection domain of the utility model is not limited thereto; Anyly be familiar with this technological people in the technical scope that the utility model disclosed, the variation that can expect easily or replacement all should be encompassed within the protection domain of the utility model.Therefore, the protection domain of the utility model should be as the criterion with the protection domain of claim.
Claims (3)
1. device that reduces the urea granules temperature; Comprise fluidized-bed, fluidized-bed air compartment, blast cap, downtake, air-blaster; Said fluidized-bed is positioned at the bottom of urea prilling tower; Said fluidized-bed air compartment is positioned at the bottom of said fluidized-bed and is communicated with said air-blaster, and said blast cap is positioned at the upper surface of said fluidized-bed and is communicated with said fluidized-bed air compartment, also has a plurality of holes on the said blast cap; Said downtake runs through the upper and lower surface of said fluidized-bed, it is characterized in that: the upper end of said downtake is higher than the upper surface of said fluidized-bed.
2. the device of reduction urea granules temperature as claimed in claim 1 is characterized in that, the upper end of said downtake exceeds the upper surface 50-100mm of said fluidized-bed.
3. the device of reduction urea granules temperature as claimed in claim 1 is characterized in that, the diameter in the hole on the said blast cap is 3-5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200201233U CN202214298U (en) | 2011-01-19 | 2011-01-19 | Device for lowering temperature of urea particles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200201233U CN202214298U (en) | 2011-01-19 | 2011-01-19 | Device for lowering temperature of urea particles |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202214298U true CN202214298U (en) | 2012-05-09 |
Family
ID=46013561
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200201233U Expired - Fee Related CN202214298U (en) | 2011-01-19 | 2011-01-19 | Device for lowering temperature of urea particles |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202214298U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017118646A1 (en) * | 2016-01-07 | 2017-07-13 | Thyssenkrupp Industrial Solutions Ag | Method and apparatus for prilling porous ammonium nitrate |
-
2011
- 2011-01-19 CN CN2011200201233U patent/CN202214298U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017118646A1 (en) * | 2016-01-07 | 2017-07-13 | Thyssenkrupp Industrial Solutions Ag | Method and apparatus for prilling porous ammonium nitrate |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120509 Termination date: 20180119 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |