CN101696141A - Method for producing fluidized bed - Google Patents
Method for producing fluidized bed Download PDFInfo
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- CN101696141A CN101696141A CN200910169314A CN200910169314A CN101696141A CN 101696141 A CN101696141 A CN 101696141A CN 200910169314 A CN200910169314 A CN 200910169314A CN 200910169314 A CN200910169314 A CN 200910169314A CN 101696141 A CN101696141 A CN 101696141A
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- fluidized
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
Abstract
The invention relates to a method for producing a fluidized bed. In the method, taking urea granulation as an example, the granulation process uses small granular urea as a crystal nucleus which grows up by being coated by continuously-splashed urea solution. After screening, the qualified granules are cooled by a heat exchanger to prepare the final product. The method has a reasonable flow and less investment, is energy-saving and can be used together with the conventional tower granulation device. The size of the produced granule can be adjusted freely, so the method is an ideal production method.
Description
The fields such as chemical industry, medicine, material, mining industry, building materials that the present invention relates to are widely used.
Aborning, with urea is example, and traditional production method is that fusing urea is got to very high cat head, is sprayed into drop, drop ceaselessly descends under action of gravity, the cold wind that is entered at the bottom of the tower constantly cools off, crystallization, and obtain the solid particulate of urea, because urea enterprise constantly expands production, the super design loading of prilling tower is used cause a strength degradation to making, the particle efflorescence is serious, influences result of use.The oarse-grained method equipment of existing production urea is many, and power consumption is big, and kind is single.
The object of the present invention is to provide a kind of defective that overcomes prior art, can make the production diversification of varieties, the significantly reduced a kind of fluidized-bed production method of power consumption.
The technical scheme that a kind of fluidized-bed production method of the present invention is adopted is: the small-particle that prilling tower comes is gone into the fluidized-bed grain box through the bucket elevator sieve apparatus is laggard, fluidized-bed is vertical in the casing is arranged as two or more, the small-particle that comes when sieve apparatus enters grain box, make grain flow to the nozzle below through flow deflector, the nozzle atomization urine is sprayed at particle surface progressively grows up particle, particle increases the laggard fluidized-bed of going into, in fluidized-bed, particle is carried out cooling drying, the particle that goes out fluidized-bed enter down one deck flow deflector so repeatedly particle constantly grow up, the granular urea that generates exports through grain box, bucket elevator, behind the sieve apparatus, small-particle returns grain box, and qualified particle obtains finished product through cooling.
Wherein, described fusing urea nozzle is contained in fluidized-bed top or place, fluidized-bed outlet below behind the flow deflector, for one or more.
Described flow deflector can be real plate or interchanger.
Described flow deflector exports the relative 30-70 degree inclination angle that becomes with horizontal plane with fluidized-bed.
Described flow deflector also can be a camber.
Described qualified pellet cooler is plate cooler or shell and tube cooler.
Described sieve apparatus can also sieve appears small-particle, passes through small-particle guide plate directional nozzle below 50-200 millimeter, fine particle is binded fast increase.
A kind of fluidized-bed production method of the present invention can be used with prilling tower, can also utilize small-particle to form a cover separately for nucleus and produce granular urea or compound fertilizer facility.
Wherein, can form a cover independent system with induced draft fan, washing tower, washing pump, rinse bath, separator during described independent production macrobead.
Described a kind of fluidized-bed production method allows different solutions to spray production composite fertilizer in same grain box.
A kind of fluidized-bed production method of the present invention process characteristic is: compare with the technology of producing like products, running device reduces, and produces loading elasticity and increases, and simple transformation can be produced multi-assortment production under the identical device condition.
Further describe the present invention below in conjunction with accompanying drawing.
Fig. 1 is that a kind of fluidized-bed combines production technique with prilling tower
Fig. 2 is that a kind of fluidized-bed is produced the granular urea production technique separately
Wherein, label 1 is the fluidized bed prilling case, and 2 is the fusing urea nozzle, 3 is fluidized-bed, and 4 are the outlet of grain box particle, and 5 is bucket elevator, 6 is vibratory screening apparatus, and 7 are the granulation revert pipe, and 8 is flow deflector, 9 is the fluidized-bed multihole distributor, and 10 is the fluidization air house steward, and 11 is the grain box pneumatic outlet, 12 is to connect grain box gas to go into the prilling tower pipeline, and 13 is prilling tower, and 14 is the finished particle water cooler, 15 is washer, 16 is washing pump, and 17 is gas blower, and 18 is induced draft fan, 19 is rinse bath, 20 is separator, and 21 was the small-particle revert pipe, and 22 are the plate that gathers materials, 23 was the small-particle flow deflector, and 24 is grain box and washer pipe connecting.
As shown in Figure 1, nucleus rises to vibratory screening apparatus 6 by bucket elevator 5, screening back small-particle enters grain box 1 to flow deflector 8 through revert pipe 7, urea soln is sprayed at this in particle flows to fusing urea nozzle 2 through water conservancy diversion below to be grown up particle to enter fluidized-bed 3, cross small-particle and increase fine particle being binded fast, cross the small-particle flow deflector and only be located at last layer fluidized-bed top through small-particle flow deflector 23 directional nozzles through small-particle revert pipe 21.Fluidization air carries out cooling drying through 9 pairs of particles of fluidisation multihole distributor, particle is one deck flow deflector motion downwards under fluidized state, so multiple particle is constantly grown up through the plate 22 that gathers materials, grain box particle outlet 4 enters bucket elevator 5 and enters water cooler through the qualified particle of sieve apparatus 6 screenings, makes qualified product.The fluidization air of gas blower 17 by passing through grain box pneumatic outlet 11 behind the fluidized-bed multihole distributor 9, is entering prilling tower through grain box and prilling tower pipe connecting 12 through fluidization air house steward 10 fluidized-beds 3.
As shown in Figure 2, nucleus rises to vibratory screening apparatus 6 by bucket elevator 5, screening back small-particle enters grain box 1 to flow deflector 8 through revert pipe 7, urea soln is sprayed at this in particle flows to fusing urea nozzle 2 through water conservancy diversion below to be grown up particle to enter fluidized-bed 3, cross small-particle and increase fine particle being binded fast, cross the small-particle flow deflector and only be located at last layer fluidized-bed top through small-particle flow deflector 23 directional nozzles through small-particle revert pipe 21.Fluidization air carries out cooling drying through 9 pairs of particles of fluidisation multihole distributor, and particle is one deck flow deflector motion downwards under fluidized state, and so multiple particle is constantly grown up and entered bucket elevator 5 and enter water cooler through the qualified particle of sieve apparatus 6 screenings, makes qualified product.The fluidization air of gas blower 17 passes through grain box pneumatic outlet 11 after fluidization air house steward 10 fluidized-beds 3 pass through fluidized-bed multihole distributor 9, grain box and washer pipe connecting 24 enter the dusty gas process in washer that has of washer 15 and wash, weary gas is through induced draft fan 18, through separator 20 emptying, washings enters rinse bath 19, and washings washs under washing pump 16 effects.
Claims (10)
1. fluidized-bed production method, the small-particle that it is characterized in that comprising prilling tower is gone into the fluidized-bed grain box through the bucket elevator sieve apparatus is laggard, fluidized-bed is vertical in the casing is arranged as two or more, the small-particle that comes when sieve apparatus enters grain box, make grain flow to the nozzle below through flow deflector, the nozzle atomization urine is sprayed at particle surface progressively grows up particle, particle increases the laggard fluidized-bed of going into, in fluidized-bed, particle is carried out cooling drying, the particle that goes out fluidized-bed enter down one deck flow deflector so repeatedly particle constantly grow up, the granular urea that generates exports through grain box, bucket elevator, behind the sieve apparatus, small-particle returns grain box, and qualified particle obtains finished product through cooling.
2. as claimed in claim 1. a kind of fluidized-bed production method is characterized in that the fusing urea nozzle is contained in fluidized-bed top or place, fluidized-bed outlet below behind the flow deflector, for one or more.
3. as claimed in claim 1. a kind of fluidized-bed production method is characterized in that flow deflector can be real plate or interchanger.
4. as claimed in claim 1. a kind of fluidized-bed production method is characterized in that the outlet of flow deflector and fluidized-bed is relative and becomes 30-70 degree inclination angle with horizontal plane.
5. as claimed in claim 1. a kind of fluidized-bed production method is characterized in that flow deflector also can be a camber.
6. as claimed in claim 1. a kind of fluidized-bed production method is characterized in that qualified pellet cooler is plate cooler or shell and tube cooler.
7. as claimed in claim 1. a kind of fluidized-bed production method, it is characterized in that sieve apparatus can also sieve to appear small-particle, passed through small-particle guide plate directional nozzle below 50-200 millimeter, fine particle is binded fast increase.
8. as claimed in claim 1. a kind of fluidized-bed production method, it is characterized in that a kind of fluidized-bed production method can use with prilling tower, can also utilize small-particle is that nucleus is formed a cover separately and produced granular urea or compound fertilizer facility.
9. as claimed in claim 1. a kind of fluidized-bed production method, can form a cover independent system with induced draft fan, washing tower, washing pump, rinse bath, separator when it is characterized in that described independent production macrobead.
10. as claimed in claim 1. a kind of fluidized-bed production method is characterized in that a kind of fluidized-bed production method allows different solutions to spray production composite fertilizer in same grain box.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910169314A CN101696141A (en) | 2009-08-25 | 2009-08-25 | Method for producing fluidized bed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910169314A CN101696141A (en) | 2009-08-25 | 2009-08-25 | Method for producing fluidized bed |
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| CN101696141A true CN101696141A (en) | 2010-04-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN200910169314A Pending CN101696141A (en) | 2009-08-25 | 2009-08-25 | Method for producing fluidized bed |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102674905A (en) * | 2012-05-14 | 2012-09-19 | 山西省霍州市化学工业有限责任公司 | Method and device for recycling dust in urea granules |
| CN104970973A (en) * | 2014-04-02 | 2015-10-14 | 江苏宇通干燥工程有限公司 | Suppository manufacturing method and suppository manufacturing equipment |
| CN105503280A (en) * | 2016-01-22 | 2016-04-20 | 菏泽金正大生态工程有限公司 | Production method for granular compound mixed nitrogen fertilizer |
| WO2022199678A1 (en) * | 2021-03-25 | 2022-09-29 | 新奥（厦门）农牧发展有限公司 | Novel sodium butyrate particle and preparation method therefor |
-
2009
- 2009-08-25 CN CN200910169314A patent/CN101696141A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102674905A (en) * | 2012-05-14 | 2012-09-19 | 山西省霍州市化学工业有限责任公司 | Method and device for recycling dust in urea granules |
| CN104970973A (en) * | 2014-04-02 | 2015-10-14 | 江苏宇通干燥工程有限公司 | Suppository manufacturing method and suppository manufacturing equipment |
| CN104970973B (en) * | 2014-04-02 | 2018-09-07 | 江苏宇通干燥工程有限公司 | Suppository manufacturing method and suppository manufacturing equipment |
| CN105503280A (en) * | 2016-01-22 | 2016-04-20 | 菏泽金正大生态工程有限公司 | Production method for granular compound mixed nitrogen fertilizer |
| WO2022199678A1 (en) * | 2021-03-25 | 2022-09-29 | 新奥（厦门）农牧发展有限公司 | Novel sodium butyrate particle and preparation method therefor |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
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Open date: 20100421 |