CN204085242U - Urea fluidisation cooling and dedusting device - Google Patents
Urea fluidisation cooling and dedusting device Download PDFInfo
- Publication number
- CN204085242U CN204085242U CN201420441066.XU CN201420441066U CN204085242U CN 204085242 U CN204085242 U CN 204085242U CN 201420441066 U CN201420441066 U CN 201420441066U CN 204085242 U CN204085242 U CN 204085242U
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- air
- urea
- fluid bed
- cooling
- dedusting device
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Abstract
The utility model discloses a kind of urea fluidisation cooling and dedusting device, comprise fluid bed, whirling vibration sieve, cyclone separator and scrubbing tower, described air blast comprises an air inlet and to the air outlet of fluidizing air and gas passage, described air inlet or air outlet place are provided with a dehumidifier, described gas passage is wrapped with cooling tube, containing cooling water in described cooling tube.The utility model advantage reduces air humidity while being to reduce air themperature, avoids dust or urea granules bonding to affect product quality.
Description
Technical field
The utility model relates to chemical production equipment field, particularly relates to a kind of urea fluidisation cooling and dedusting device.
Background technology
The height of urea particle tower exit temperature is with granulation tower diameter, highly, air temperature is relevant with the factor such as intensity, production load.Granulation tower diameter and highly often according to design production scale determine, sometimes consider construction investment problem, granulation tower can not design very large.Particularly a collection of small area plant manufacturing enterprise of China, granulation tower diameter often only has 9 meters or 12 meters, be highly 60-70 rice, along with the continuous Revamping of urea plant, the device of former design annual output 40000 tons or 60,000 tons often can reach 10-20 ten thousand tons, like this, granulation tower just can not meet need of production, cause finished urea temperature too high (particularly reaching more than 80 DEG C summer), dust content increases, the problems such as granularity low qualified, and ammonia content in finished urea is higher, ammonia is highly seasoned, after making to be packed in bag, urea from caking is serious, easily lump in storage with transportation, product quality is caused to decline, directly affects the benefit of enterprise.
Utility model content
For defect and the deficiency of prior art, the purpose of this utility model is to provide a kind of urea fluidisation cooling and dedusting device.
The technical solution of the utility model is achieved in that a kind of urea fluidisation cooling and dedusting device, comprise fluid bed, whirling vibration sieves, cyclone separator and scrubbing tower, described fluid bed comprises the charging aperture of urea, discharging opening and bed body, the bottom of described fluid bed is provided with the gas distribution grid of band blowing holes, this gas distribution grid is connected by the outer air blast driven by VFC of pipeline and fluid bed, described whirling vibration sieve comprises the inflow entrance be connected with the discharging opening of fluid bed, for the flow export be connected with finished product packing portion, described fluid bed top is provided with gas vent, described gas vent connects the air-introduced machine of a VFC driving and described cyclone separator successively through pipeline, described cyclone separator is connected with scrubbing tower, described air blast comprises an air inlet and to the air outlet of fluidizing air and gas passage, described air inlet or air outlet place are provided with a dehumidifier, described gas passage is wrapped with cooling tube, containing cooling water in described cooling tube.
Further, for strengthening cooling-down effect, described gas distribution grid also comprises an accommodating cavity, is sealed with cooling fluid in described accommodating cavity.
Further, described cyclone dehumidifier adopts single cyclone separator, avoids the easy stopping state using multiple-effect cyclone separating device.
Further, described gas distribution grid draw and insert-type is arranged on described fluid bed.
Further, air blast and described air-introduced machine frequency conversion uniting and adjustment are stated.
Compared with prior art, the utility model has the advantage of: can reduce about temperature 20-25 °, simultaneously air humidity content reduces greatly, avoids dust or urea granules bonding affects product quality.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.
Embodiment: specifically refer to Fig. 1, at the bottom of urea prilling tower, urea is out through belt feeder feed, is incorporated in fluid bed 1 body by charging aperture 11; Through dehumidifier 7 and cold go the air of pipe 91 pairs of gas passage 9 cool-down dehumidifications by the control of air blast 6 at frequency converter under send the air of appropriate drying to enter bottom fluid bed 1 after pressurization, under the control of frequency converter, by gas air distribution plate 13 in fluid bed 1, urea is acutely seethed with excitement with air blast 6 in fluid bed 1 by air-introduced machine 8 simultaneously, promote urea by gas flowing to walk forward in fluid bed 1 simultaneously, not only reduce urea temperature but also be separated the dust in urea in progradation, thus improve product quality; At fluid bed 1 top, carry the gas of carbamide dust, by being arranged on the 8 air-introduced machine suction functions at scrubbing tower 4 top, carbamide dust is introduced single cyclone separator 3, under the effect of single cyclone separator 3, can effectively isolate the carbamide dust carried secretly in gas, single cyclone separator 3 exit gas UNICOM scrubbing tower 4; Urea granules after fluidized bed processing is greater than 1.0mm, is qualified finished urea, finished urea through belt feeder to be imported to by the discharging opening 12 of fluid bed enter packing department 5 after Gyratory screen 2 sieves packaging.
Be drawn in scrubbing tower 4 from single cyclone separator 3 top gas out, solution washing, absorption in atomizer and packing layer in tower, gas, after the wire mesh demister precipitation of liquid droplets of tower top, is extracted out by the axial id fan of tower top, is drained in air.
For quick solution " dead bed " (compass screen surface blocking) phenomenon, split air distribution plate adopts draw and insert-type to install by arranging corresponding slide rail at fluid bed, and such fast and easy changes the sieve of blocking.
Simultaneously air blast and air-introduced machine adopt interlock frequency conversion control, reduce not mating because of the blow rate required and absorbing quantity, form the risk of " dead bed ".
The above-mentioned exhaust gas be drained in air meets discharging standards completely, and cleaning solution recycles, and reaches finite concentration Hou Song Urea Evaporation workshop section.The carbamide dust of discharging bottom cyclone separator send packaging system through belt, or returns urea system after carrying out melting, also can do the raw material of urea-base compound fertilizer and melamine.
The above is only better embodiment of the present utility model, therefore all equivalences done according to structure, feature and the principle described in the utility model patent claim change or modify, and are included in the utility model patent claim.
Claims (4)
1. a urea fluidisation cooling and dedusting device, comprise fluid bed, whirling vibration sieves, cyclone separator and scrubbing tower, described fluid bed comprises the charging aperture of urea, discharging opening and bed body, the bottom of described fluid bed is provided with the gas distribution grid of band blowing holes, this gas distribution grid is connected by the outer air blast driven by VFC of pipeline and fluid bed, described whirling vibration sieve comprises the inflow entrance be connected with the discharging opening of fluid bed, for the flow export be connected with finished product packing portion, described fluid bed top is provided with gas vent, described gas vent connects the air-introduced machine of a VFC driving and described cyclone separator successively through pipeline, described cyclone separator is connected with scrubbing tower, it is characterized in that: described air blast comprises an air inlet and to the air outlet of fluidizing air and gas passage, described air inlet or air outlet place are provided with a dehumidifier, described gas passage is wrapped with cooling tube, containing cooling water in described cooling tube.
2. urea fluidisation cooling and dedusting device according to claim 1, is characterized in that: described gas distribution grid also comprises an accommodating cavity, is sealed with cooling fluid in described accommodating cavity.
3. urea fluidisation cooling and dedusting device according to claim 1, is characterized in that: described gas distribution grid draw and insert-type is arranged on described fluid bed.
4. urea fluidisation cooling and dedusting device according to claim 1, is characterized in that: described air blast and described air-introduced machine frequency conversion uniting and adjustment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420441066.XU CN204085242U (en) | 2014-08-06 | 2014-08-06 | Urea fluidisation cooling and dedusting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420441066.XU CN204085242U (en) | 2014-08-06 | 2014-08-06 | Urea fluidisation cooling and dedusting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204085242U true CN204085242U (en) | 2015-01-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420441066.XU Expired - Fee Related CN204085242U (en) | 2014-08-06 | 2014-08-06 | Urea fluidisation cooling and dedusting device |
Country Status (1)
| Country | Link |
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| CN (1) | CN204085242U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113446817A (en) * | 2020-03-25 | 2021-09-28 | 江苏苏盐井神股份有限公司 | Anti-caking device and method for cold drying of wet salt |
-
2014
- 2014-08-06 CN CN201420441066.XU patent/CN204085242U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113446817A (en) * | 2020-03-25 | 2021-09-28 | 江苏苏盐井神股份有限公司 | Anti-caking device and method for cold drying of wet salt |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150107 Termination date: 20170806 |