CN102674905A - Method and device for recycling dust in urea granules - Google Patents
Method and device for recycling dust in urea granules Download PDFInfo
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- CN102674905A CN102674905A CN2012101464023A CN201210146402A CN102674905A CN 102674905 A CN102674905 A CN 102674905A CN 2012101464023 A CN2012101464023 A CN 2012101464023A CN 201210146402 A CN201210146402 A CN 201210146402A CN 102674905 A CN102674905 A CN 102674905A
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- fluidized
- urea granules
- dust
- tripping device
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Abstract
The invention particularly relates to a method for recycling dust in urea granules and a device for the dust recycling method. The method comprises steps as follows: urea granules are delivered into a fluidized bed separation device, and delivered to the bed tail to be output along the fluidized bed layer; the lower part of the bed layer of the fluidized bed separation device is connected with a fluidized bed blast blower, and the upper part is provided with an air duct; the fluidized bed blast blower blasts air from below the bed layer so as to blow up dust flowing on the bed layer in the urea granules; and the dust enters the air duct, and is collected by a cyclone dust collector installed at the tail end of the air duct. The method and device provided by the invention can effectively solve the problems of high dust content and high baiting temperature in the urea granules formed by the granulation tower.
Description
Technical field
The invention belongs to the urea production technical field, be specifically related to a kind of method that reclaims dust in the urea granules, and the device that is suitable for this recovery dust method.
Background technology
Urea is the highest solid fertilizer of nitrogen content, and prilling tower is a key equipment of producing urea.The urea granules of urea prilling tower formation at present; Problems such as ubiquity particle blanking temperature is high, dust content is big, granularity is less than normal; Not only dust content is too high in the prilling tower cat head emptying gas; Have a strong impact on peripheral ecotope, and dust is more in the urea granules, has reduced the urea product quality.
Summary of the invention
The purpose of this invention is to provide a kind of method that reclaims dust in the urea granules, to solve the urea granules dust content height that prilling tower forms, the problem that blanking temperature is high.
A kind of device that is suitable for dust method in the above-mentioned recovery urea granules is provided, and is another goal of the invention of the present invention.
For addressing the above problem; Technical scheme of the present invention is: a kind of method that reclaims dust in the urea granules, urea granules is transported in the fluidized-bed tripping device, and be delivered to tailstock output along the fluidized-bed bed; Below the bed of said fluidized-bed tripping device, link the fluidized-bed gas blower; The top is provided with the air channel, and the fluidized-bed gas blower blows afloat the dust in the mobile urea granules on the bed from the air blast of lower direction bed; Get in the air channel, dust is collected through the terminal tornado dust collector of installing in air channel.
Method of the present invention; Urea granules is separated with dust with the fluidized-bed gas blower that the bed below is connected through the fluidized-bed tripping device; And utilize the air channel that is arranged in fluidized-bed tripping device top to collect the dust that blows out from urea granules, through being connected the terminal tornado dust collector in air channel dust is focused on afterwards, thereby solved the high problem of urea granules dust content that prilling tower is produced; Move on the fluidized-bed tripping device owing to urea granules simultaneously; And the wind of the fluidized-bed gas blower of process bed below, institute's heat content descends, and has solved the high problem of prilling tower blanking temperature.
The present invention also provides the device that is suitable for urea granules dust recovery method, and this device comprises:
A loading head is installed in the end of urea granules conveying belt, and urea granules from prilling tower is used to collect;
A feeder is installed between loading head and the fluidized-bed tripping device, is used for the urea granules that loading head is collected is transported to the fluidized-bed tripping device;
Fluidized-bed tripping device with enclosed space, the urea granules that feeder is sent into flow to tailstock output through bed;
A fluidized-bed gas blower is connected with the bed bottom of fluidized-bed tripping device, and air blast on the bed of fluidized-bed tripping device from bottom to top blows afloat the dust in the mobile urea granules on the bed, separates with urea granules;
An air channel is installed in above the bed of fluidized-bed tripping device, is used for collecting the dust that blows out from urea granules;
Tornado dust collector are installed in the end in air channel, comprise separator and induced draft fan, and its induced draft fan makes and produces negative pressure in the separator, the dust in the air channel is sucked to collect in the separator reclaim.
After prilling tower is produced urea granules; Through the urea granules conveying belt urea granules is sent to loading head; Loading head is transported to product the fluidized-bed tripping device with enclosed space through feeder; Urea granules moves on the fluidized-bed tripping device, flow to tailstock output through bed, directly packs; The fluidized-bed gas blower of while fluidized-bed tripping device below; From bottom to top to the air blast of fluidized-bed tripping device bed; Make urea granules and dust separation, the dust after the separation is through the terminal tornado dust collector centralized collection in air channel and air channel of fluidized-bed tripping device top.
Beneficial effect of the present invention: reduced the temperature of the urea granules of prilling tower production, so that urea granules is packaged into bag; Improved the quality of urea product; Reduce the content of dust in the emptying gas, reduced atmospheric pollution; The dust that reclaims simultaneously can carry out second stage employ, has reduced waste.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Embodiment
As shown in Figure 1, a kind of device that reclaims dust in the urea granules comprises that is installed in the terminal loading head 1 of urea granules conveying belt; Fluidized-bed tripping device 2 with enclosed space; Fluidized-bed tripping device 2 is connected through feeder 3 with loading head 1, and fluidized-bed tripping device 2 tops are provided with air channel 6, and the bottom is provided with fluidized-bed gas blower 4; The end in air channel 6 is equipped with tornado dust collector, and tornado dust collector comprise separator 51 and induced draft fan 52.
During use; The urea granules conveying belt carries the urea granules that contains a large amount of dust to get into loading head; Urea granules in the loading head gets into the fluidized-bed tripping device through feeder; The urea product that contains dust under the effect of the fluidized-bed gas blower below the fluidized-bed tripping device, urea granules and dust separation; Separate the back urea granules and be packaged into bag along with fluidized-bed is transported, dust is then handled by the terminal tornado dust collector centralized collection in air channel and air channel.
Claims (2)
1. a method that reclaims dust in the urea granules is characterized in that urea granules is transported in the fluidized-bed tripping device, is delivered to tailstock output along the fluidized-bed bed; Below the bed of said fluidized-bed tripping device, link the fluidized-bed gas blower; The top is provided with the air channel, and the fluidized-bed gas blower blows afloat the dust in the mobile urea granules on the bed from the air blast of lower direction bed; Get in the air channel, dust is collected through the terminal tornado dust collector of installing in air channel.
2. device that reclaims dust in the urea granules is characterized in that said device comprises:
A loading head is installed in the end of urea granules conveying belt, and urea granules from prilling tower is used to collect;
A feeder is installed between loading head and the fluidized-bed tripping device, is used for the urea granules that loading head is collected is transported to the fluidized-bed tripping device;
Fluidized-bed tripping device with enclosed space, the urea granules that feeder is sent into flow to tailstock output through bed;
A fluidized-bed gas blower is connected with the bed bottom of fluidized-bed tripping device, and air blast on the bed of fluidized-bed tripping device from bottom to top blows afloat the dust in the mobile urea granules on the bed, separates with urea granules;
An air channel is installed in above the bed of fluidized-bed tripping device, is used for collecting the dust that blows out from urea granules;
Tornado dust collector are installed in the end in air channel, comprise separator and induced draft fan, and its induced draft fan makes and produces negative pressure in the separator, the dust in the air channel is sucked to collect in the separator reclaim.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101464023A CN102674905A (en) | 2012-05-14 | 2012-05-14 | Method and device for recycling dust in urea granules |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101464023A CN102674905A (en) | 2012-05-14 | 2012-05-14 | Method and device for recycling dust in urea granules |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102674905A true CN102674905A (en) | 2012-09-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012101464023A Pending CN102674905A (en) | 2012-05-14 | 2012-05-14 | Method and device for recycling dust in urea granules |
Country Status (1)
| Country | Link |
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| CN (1) | CN102674905A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103408331A (en) * | 2013-07-08 | 2013-11-27 | 河南晋开化工投资控股集团有限责任公司 | Dust-free urea cooling method |
| CN110432376A (en) * | 2019-09-02 | 2019-11-12 | 烟台双塔食品股份有限公司 | A kind of prilling process and its powder device that disappears for reconstituting albuminoid powder |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0653961B1 (en) * | 1992-08-07 | 1996-06-19 | Hydro Agri Sluiskil B.V. | Process for the production of urea granules |
| CN2607371Y (en) * | 2003-04-01 | 2004-03-24 | 项文裕 | Urea granule boiling cooler |
| CN201337869Y (en) * | 2008-12-19 | 2009-11-04 | 宁波金远东工业科技有限公司 | Dust removal unit for urea cooling fluidized bed |
| CN101696141A (en) * | 2009-08-25 | 2010-04-21 | 杨雁鸿 | Method for producing fluidized bed |
-
2012
- 2012-05-14 CN CN2012101464023A patent/CN102674905A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0653961B1 (en) * | 1992-08-07 | 1996-06-19 | Hydro Agri Sluiskil B.V. | Process for the production of urea granules |
| CN2607371Y (en) * | 2003-04-01 | 2004-03-24 | 项文裕 | Urea granule boiling cooler |
| CN201337869Y (en) * | 2008-12-19 | 2009-11-04 | 宁波金远东工业科技有限公司 | Dust removal unit for urea cooling fluidized bed |
| CN101696141A (en) * | 2009-08-25 | 2010-04-21 | 杨雁鸿 | Method for producing fluidized bed |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103408331A (en) * | 2013-07-08 | 2013-11-27 | 河南晋开化工投资控股集团有限责任公司 | Dust-free urea cooling method |
| CN110432376A (en) * | 2019-09-02 | 2019-11-12 | 烟台双塔食品股份有限公司 | A kind of prilling process and its powder device that disappears for reconstituting albuminoid powder |
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Application publication date: 20120919 |