CN101007748A - Full- fusing wind-cooling crystallization granulation method and device for composite fertilizer - Google Patents
Full- fusing wind-cooling crystallization granulation method and device for composite fertilizer Download PDFInfo
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- CN101007748A CN101007748A CN 200710004177 CN200710004177A CN101007748A CN 101007748 A CN101007748 A CN 101007748A CN 200710004177 CN200710004177 CN 200710004177 CN 200710004177 A CN200710004177 A CN 200710004177A CN 101007748 A CN101007748 A CN 101007748A
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Abstract
The invention discloses an air-cooled crystal prilling method of all-weld composite fertilizer and device, which comprises the following steps: making the wind of fan blow into tower into vorticity through layout position and angle of fan rationally; making particles of slip initiate descending motion; extending decent and cooling time; augmenting contact face with cold-blast air; making high-heat particles falling into crystallization temperature swiftly; getting good granulated exterior.
Description
Technical field
The present invention relates to a kind of granulation formation method and device thereof of composite fertilizer, the wind-cooling crystallization granulation method and the equipment of especially a kind of full-fusing composite fertilizer, the wind-cooling crystallization granulation method and the device thereof of specifically a kind of full-fusing composite fertilizer.
Background technology
In recent years, the production technique that China produces full-fusing composite fertilizer (being NPK composite fertilizer) is greatly improved, it is ripe day by day that traditional technologys such as material, drum granulating are made in traditional disk granulation, extruding, but traditional technology exists efficient low, a series of problems such as finished product appearance poor, energy consumption height, and people have invented the tower granulation novel process for this reason, the produced product appearance of this technology is mellow and full, nutrient is accurately even, and the utilization rate of fertilizer height is promptly popular once releasing.But the subject matter that this technology exists is in order to increase cooling performance, its body of the tower is mostly more than 100 meters, tower diameter is also more than 12, investment is big, the cost height, floor space is big, to the safety requirements height, the conveying of material and lifting difficulty are very big, and energy consumption is also than higher, for this reason, people have done big quantity research on tower height and energy consumption, for this reason, Chinese patent 021349711 has proposed a kind of low tower production technique and equipment, Chinese patent 200510038702.X has proposed a kind of freezing process for granulating and device thereof of utilizing, and they are reducing all creative meaning on the body of the tower height.Still there are following problem in actual use in these two kinds of methods and device: the one, increased dust, and dust is easy and the adhesion of tower wall, needs regularly to stop production cleaning; The 2nd, the outward appearance degree of finished particle is relatively poor, can't compare favourably adhesion easily between the particle with high tower; The 3rd, bad adaptability, the prescription of the composite fertilizer that each prilling tower can be made changes can not be too greatly, otherwise can't works better, and the product of different ingredients is regulated difficulty; The 4th, invest still bigger.Just because of above-mentioned reason, cause them to be difficult to big area and promote the use of.
Summary of the invention
The granulating weak effect that the objective of the invention is to exist, easily produce sticking wall dust and product proportioning and regulate the big problem of difficulty at existing low tower granulation, invent a kind of shaping well, less investment, energy consumption wind-cooling crystallization granulation method and device thereof low, that be suitable for the full-fusing composite fertilizer that low tower uses.
Technical scheme of the present invention is:
The wind-cooling crystallization granulation method of a kind of full-fusing composite fertilizer is characterized in that it may further comprise the steps:
The first step is 15-50 with the composite fertilizer's slip under the full-fusing state from being positioned at tower height, and tower diameter is to spray in the rotating granulation head at top of prilling tower of 6-12 rice;
Second step, be that 4 meters prilling tower bodies of the tower with upper/lower positions are installed first group of cooling blower of drying on every side from the prilling head vertical range in tower, making the air-out direction of every typhoon machine and the angle of horizontal plane is the 0-75 degree, the best is the 15-60 degree, with the diameter angle be the direction of 0-75 degree (best for 5-45 degree) to tower to carrying cooling wind, and make cooling in tower, form the vortex shape air curtain with wind by the blower fan air-supply, thereby slow down the lowering speed of the particulate state slip that sprays in the rotating granulation head, each face of slip is fully contacted with wind with the cooling that blower fan is sent here, make its surperficial rapid crystallization; The vacuum fan that ventilates and produce negative pressure meanwhile has been installed on the granulation cat head, has been extracted out the heat of slurry in the tower outside the tower fast;
The 3rd step, below first group of cooling blower every be provided with for 1.5-4 rice one group, altogether design two groups or more, go on foot identical cooling air unit with second, so that the basic crystal grain that is shaped further cools off after the cooling of the first cooling air unit, at the bottom of tower, obtain granular complex fertilizer;
In the 4th step, above-mentioned the 3rd granular complex fertilizer that obtains of step is sent tower carry out naturally cooling outward and get final product.
The wind-cooling crystallization granulation device of a kind of full-fusing composite fertilizer, comprise prilling tower 1, rotating granulation head 2, blower fan 3, vacuum fan 4, this tower height of making material tower 1 is a 15-50 rice, tower diameter is a 6-12 rice, rotating granulation head 2 is installed in prilling tower 1 inside top center position, it is characterized in that described vacuum fan 4 be installed in the top of prilling tower 1, rotating granulation head 2 around, the blast inlet of vacuum fan 4 communicates with the inner chamber of prilling tower 1; In distance rotating granulation head 2 vertical ranges is that the annular air supply unit 5 that 3-5 encloses, every circle is made up of some typhoon machines 3 is installed on the prilling tower body of the tower that (contains 4 meters) below 4 meters, and the distance between the described annular air supply unit 5 is a 1.5-4 rice; The angle α of the air supply direction of described blower fan 3 and horizontal plane is the 0-75 degree, and the best is the 15-60 degree, and the angle β between the loca tower diameter line is the 0-75 degree, and the best is the 5-45 degree.
Described vacuum fan 4 is vertically mounted on the top of prilling tower 1, and its quantity is the 4-8 platform.
Every circle annular air supply unit 5 is made up of 20-40 typhoon machine 3, and every circle annular air supply unit 5 all is equipped with and is used for the unified variable-frequence governor of regulating air quantity.
The present invention has the following advantages:
1, method technology compactness of the present invention, product shaping are good, less investment, energy consumption is low, it produces negative pressure upwards by many horizontal rows are installed at granulation formation tower middle part on the one hand to the wind cutting air-blast device and at many exhaust equipments of cat head installation, fast unnecessary heat is discharged outside the tower on the other hand, reduced the set time of compound fertilizer granules significantly, reduced the height and the diameter of granulation formation tower, the cost of can reducing investment outlay greatly reduces running cost.
2, compare with freezing tower with existing low tower and can reduce investment 50%-70%, simultaneously industrial scale can be regulated as required, and is changeable.
3, can produce the composite fertilizer of high, normal, basic different concns, it is very convenient to change prescription, the formula rate scope is big, can regulate air output by the variable frequency adjustment device for the composite fertilizer of different proportionings and will adjust to suitable scope cooling time, prevents that cold-peace from cooling off the not generation of foot phenomenon.
4, can not produce the dust wall sticking phenomenon, need not periodic cleaning tower wall, the compound fertilizer slurry particle can make that with vortex shape slow decline in body of the tower dust descends with particle, can not produce present dust raising phenomenon.
5, the good evenness of product, yield rate can be up to more than 99%, and handling good.
6, can under all weather conditions, work, solved under high temperature that existing processes exists, the super-humid conditions can't ordinary production contradiction, can be under hot and humid condition round-the-clock ordinary production.
7, energy consumption is low, has reduced tower height on the one hand, has reduced the energy consumption of mass transport, by adopting energy-conservation gas blower, can significantly reduce energy loss on the other hand.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Fig. 2 is the horizontal direction setting angle synoptic diagram of blower fan of the present invention.
Embodiment
The present invention is further illustrated for following structure drawings and Examples.
The wind-cooling crystallization granulation method of a kind of full-fusing composite fertilizer, it specifically may further comprise the steps:
The first step is 15-50 with the composite fertilizer's slip under the full-fusing state from being positioned at tower height, and tower diameter is to spray in the rotating granulation head at top of prilling tower of 6-12 rice;
Second step, first group of cooling blower of drying in tower is installed around the prilling tower body of the tower that from the prilling head vertical range is the position that (contains 4 meters) below 4 meters, making the air-out direction of every typhoon machine and the angle of horizontal plane is the 0-75 degree, the best is the 15-60 degree, with the diameter angle be the direction of 0-75 degree (best for 5-45 degree) to tower to carrying cooling wind, the control air supply velocity is the 2-10 meter per second, blast is 100-400Pa, to guarantee speed of cooling, and the reasonable disposition by blower fan (is promptly adjusted the direction of blower fan air-supply, angle) make cooling in tower, form the vortex shape air curtain with wind by the blower fan air-supply, thereby slow down the lowering speed of the particulate state slip that sprays in the rotating granulation head, each face of slip is fully contacted with wind with the cooling that blower fan is sent here, make its surperficial rapid crystallization; The vacuum fan that ventilates and produce negative pressure meanwhile has been installed on the granulation cat head, has been extracted out the heat of slurry in the tower outside the tower fast;
The 3rd step, below first group of cooling blower every be provided with for 1.5-4 rice one group, altogether design two groups or more, go on foot identical cooling air unit with second, so that the basic crystal grain that is shaped further cools off after the cooling of the first cooling air unit, after being deposited at the bottom of the tower, at the bottom of tower, obtain granular complex fertilizer;
In the 4th step, above-mentioned the 3rd granular complex fertilizer that obtains of step is sent tower by conveying belt carry out naturally cooling outward and get final product.
The wind-cooling crystallization granulation device of full-fusing of the present invention composite fertilizer, as shown in Figure 1, 2, it comprises prilling tower 1, rotating granulation head 2, blower fan 3, vacuum fan 4, this tower height of making material tower 1 is a 15-50 rice, tower diameter is a 6-12 rice, and rotating granulation head 2 is installed in prilling tower 1 inside top center position, is vertically installed with 4-8 platform vacuum fan 4 around the top of prilling tower 1, rotating granulation head 2, so that the heat in the tower is discharged, the blast inlet of vacuum fan 4 communicates with the inner chamber of prilling tower 1; Be that the annular air supply unit 5 that 3-5 circle, every circle are made up of 20-40 typhoon machine 3 is installed on the prilling tower body of the tower of (as 4 meters positions) below 4 meters in distance rotating granulation head 2 vertical ranges, the air output of every typhoon machine 3 and air supply velocity can be selected with reference to the relevant design handbook according to kind, speed of cooling and the output of composite fertilizer, and the distance between the described annular air supply unit 5 is advisable with 1.5-4 rice.In order to obtain ideal vortex effect, slow down the lowering speed of slip, the slurry that comes out from prilling head is cooled off rapidly, therefore the air supply direction of blower fan 3 should reasonably be controlled, the angle α of the air supply direction of blower fan 3 and horizontal plane can select between 0-75 degree (optimum range is the 15-60 degree), and the angle β between the mounting points tower diameter line of place can select (optimum range is the 5-45 degree) between the 0-75 degree.Each annular air supply unit 5 all has volume adjusting apparatus (as variable-frequence governor) separately so that air output is regulated in unification.
Air output when specifically implementing in addition, can be determined according to output and tower diameter.
Claims (6)
1, the wind-cooling crystallization granulation method of a kind of full-fusing composite fertilizer is characterized in that it may further comprise the steps:
The first step is 15-50 with the composite fertilizer's slip under the full-fusing state from being positioned at tower height, and tower diameter is to spray in the rotating granulation head at top of prilling tower of 6-12 rice;
Second step, be that 4 meters prilling tower bodies of the tower with upper/lower positions are installed first group of cooling blower of drying on every side from the prilling head vertical range in tower, making the air-out direction of every typhoon machine and the angle of horizontal plane is the 0-75 degree, with the diameter angle be the direction of 0-75 degree to tower to carrying cooling wind, and make cooling in tower, form the vortex shape air curtain with wind by the blower fan air-supply, thereby slow down the lowering speed of the particulate state slip that sprays in the rotating granulation head, each face of slip is fully contacted with wind with the cooling that blower fan is sent here, make its surperficial rapid crystallization; The vacuum fan that ventilates and produce negative pressure meanwhile has been installed on the granulation cat head, has been extracted out the heat of slurry in the tower outside the tower fast;
The 3rd step, below first group of cooling blower every be provided with for 1.5-4 rice one group, altogether design two groups or more, go on foot identical cooling air unit with second, so that the basic crystal grain that is shaped further cools off after the cooling of the first cooling air unit, at the bottom of tower, obtain granular complex fertilizer;
In the 4th step, above-mentioned the 3rd granular complex fertilizer that obtains of step is sent tower carry out naturally cooling outward and get final product.
2, the wind-cooling crystallization granulation method of full-fusing according to claim 1 composite fertilizer is characterized in that the air-out direction of every typhoon machine and the angle of horizontal plane are the 15-60 degree, with the diameter angle be the 5-45 degree.
3, the prilling granulator of the described method use of a kind of claim 1, comprise prilling tower (1), rotating granulation head (2), blower fan (3), vacuum fan (4), this tower height of making material tower (1) is a 15-50 rice, tower diameter is a 6-12 rice, rotating granulation head (2) is installed in prilling tower (1) inside top center position, it is characterized in that described vacuum fan (4) be installed in the top of prilling tower (1), rotating granulation head (2) around, the blast inlet of vacuum fan (4) communicates with the inner chamber of prilling tower (1); The annular air supply unit (5) that 3-5 circle, every circle are made up of some typhoon machines (3) is installed on distance rotating granulation head (2) vertical range is prilling tower body of the tower below the 4-10 rice, and the distance between the described annular air supply unit (5) is a 1.5-4 rice; The air supply direction of described blower fan (3) and the angle α of horizontal plane are the 0-75 degree, and the angle β between the loca tower diameter line is the 0-75 degree.
4, the wind-cooling crystallization granulation device of full-fusing according to claim 3 composite fertilizer is characterized in that described vacuum fan (4) is vertically mounted on the top of prilling tower (1), and its quantity is the 4-8 platform.
5, the wind-cooling crystallization granulation device of full-fusing according to claim 3 composite fertilizer, it is characterized in that every circle annular air supply unit (5) is made up of 20-40 typhoon machine (3), every circle annular air supply unit (5) all is equipped with and is used for the unified variable-frequence governor of regulating air quantity.
6, the wind-cooling crystallization granulation device of full-fusing according to claim 3 composite fertilizer it is characterized in that the air supply direction of described blower fan (3) and the angle α of horizontal plane are the 15-60 degree, and the angle β between the loca tower diameter line is the 5-45 degree.
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| Application Number | Priority Date | Filing Date | Title |
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| CNB2007100041779A CN100450979C (en) | 2006-12-05 | 2007-01-05 | Full- fusing wind-cooling crystallization granulation method and device for composite fertilizer |
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| CN200610098226.5 | 2006-12-05 | ||
| CNB2007100041779A CN100450979C (en) | 2006-12-05 | 2007-01-05 | Full- fusing wind-cooling crystallization granulation method and device for composite fertilizer |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010148983A1 (en) * | 2009-06-26 | 2010-12-29 | Dai Liangyu | Method for pelleting spherical fine particle of sodium nitrate |
| CN102363587A (en) * | 2011-11-22 | 2012-02-29 | 南京宝嘉利机械设备有限公司 | Melt-method tower granulation equipment |
| CN101555181B (en) * | 2009-05-13 | 2012-06-27 | 魏贵生 | Novel tower-type air-cooled prilling device for full-melting compound fertilizers |
| CN105036843A (en) * | 2015-04-28 | 2015-11-11 | 河北科技大学 | Method of producing urea-based compounded fertilizer through airflow granulation |
| CN110280184A (en) * | 2019-06-04 | 2019-09-27 | 上海境业环保能源科技股份有限公司 | A kind of blowing-suction combined type forced ventilation high-tower granulation device |
| CN112645359A (en) * | 2019-10-09 | 2021-04-13 | 四川省什邡市农科化工有限公司 | Low-tower potassium nitrate granulation method and potassium nitrate granules prepared by same |
| CN112939664A (en) * | 2021-03-05 | 2021-06-11 | 南京佳玛驰生态工程有限公司 | Carbon-based full-nutrient organic and inorganic fertilizer and preparation method thereof |
| CN113880654A (en) * | 2021-10-21 | 2022-01-04 | 眉山市新都化工复合肥有限公司 | Granulating process and equipment for water-soluble compound fertilizer |
Family Cites Families (4)
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| CN1213964C (en) * | 2002-10-14 | 2005-08-10 | 深圳市芭田生态工程股份有限公司 | Low-tower molten slurry pelletizing method and apparatus to produce granulated multicomponent composite fertilizer |
| CN1276788C (en) * | 2003-07-23 | 2006-09-27 | 赫卫东 | Particle size controllable spouting granulation method and apparatus |
| RU2281270C1 (en) * | 2004-12-31 | 2006-08-10 | Открытое Акционерное Общество "Научно-Исследовательский И Проектный Институт Карбамида И Продуктов Органического Синтеза" (Оао Ниик) | Method of production of granulated carbamide and granulation tower for realization of this method |
| CN100345619C (en) * | 2004-12-31 | 2007-10-31 | 深圳市芭田生态工程股份有限公司 | Prilling tower for producing granular fertilizer |
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2007
- 2007-01-05 CN CNB2007100041779A patent/CN100450979C/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101555181B (en) * | 2009-05-13 | 2012-06-27 | 魏贵生 | Novel tower-type air-cooled prilling device for full-melting compound fertilizers |
| WO2010148983A1 (en) * | 2009-06-26 | 2010-12-29 | Dai Liangyu | Method for pelleting spherical fine particle of sodium nitrate |
| CN102363587A (en) * | 2011-11-22 | 2012-02-29 | 南京宝嘉利机械设备有限公司 | Melt-method tower granulation equipment |
| CN105036843A (en) * | 2015-04-28 | 2015-11-11 | 河北科技大学 | Method of producing urea-based compounded fertilizer through airflow granulation |
| CN110280184A (en) * | 2019-06-04 | 2019-09-27 | 上海境业环保能源科技股份有限公司 | A kind of blowing-suction combined type forced ventilation high-tower granulation device |
| CN112645359A (en) * | 2019-10-09 | 2021-04-13 | 四川省什邡市农科化工有限公司 | Low-tower potassium nitrate granulation method and potassium nitrate granules prepared by same |
| CN112939664A (en) * | 2021-03-05 | 2021-06-11 | 南京佳玛驰生态工程有限公司 | Carbon-based full-nutrient organic and inorganic fertilizer and preparation method thereof |
| CN113880654A (en) * | 2021-10-21 | 2022-01-04 | 眉山市新都化工复合肥有限公司 | Granulating process and equipment for water-soluble compound fertilizer |
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