CN201959772U - Rotary-drum granulator with fluidized bed - Google Patents
Rotary-drum granulator with fluidized bed Download PDFInfo
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- CN201959772U CN201959772U CN2010206936281U CN201020693628U CN201959772U CN 201959772 U CN201959772 U CN 201959772U CN 2010206936281 U CN2010206936281 U CN 2010206936281U CN 201020693628 U CN201020693628 U CN 201020693628U CN 201959772 U CN201959772 U CN 201959772U
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Abstract
The utility model relates to a rotary-drum granulator with a fluidized bed, which belongs to the technical field of granulation in chemical industry. The rotary-drum granulator with a fluidized bed comprises a rotary drum, wherein a fluidized bed is arranged in the rotary drum; a fluidizing zone, a gas-distributing chamber and an fluidized-air pipeline are arranged in the fluidized bed; a molten-slurry inlet pipe is arranged below the fluidized-air pipeline, and spraying nozzles are uniformly arranged on the pipeline; 20 to 22 groups of shoveling plates are uniformly arranged on the inner wall of the rotary drum and are obliquely arranged on the rotary drum; a fluidized-air inlet and the molten-slurry inlet pipe are arranged at one end of the rotary drum, a product outlet and an end cover of a material-outlet section are arranged below the molten-slurry inlet pipe, a returned-material inlet and an end cover of a material-inlet section are arranged at the other end of the rotary drum; and air outlets are respectively arranged at two ends of the rotary drum. The rotary-drum granulator with a fluidized bed provided by the utility model can economically and efficiently produce large-particle products with high degree of sphericity, high strength and low caking property, operates reliably, is widely applicable to medium-scale production of nitride, sulfate, phosphate, carbamide, compound fertilizers and the like, and is especially suitable for the production of large-particle products.
Description
Technical field
The utility model relates to a kind of prilling granulator, is specifically related to a kind of fluidized bed drum granulating device, belongs to chemical industry granulating technique field.
Background technology
Tower granulation, fluidized bed prilling, kneader granulation, drum granulating, rotary drum ammoniation-granulation, slurry-spraying pelletizing, oil immersion granulation, the direct-cooled granulation of steel band and disk granulation etc. are mainly adopted in the production of granular nitrate, sulfate, phosphate, urea and composite fertilizer, and these methods all exist the certain limitation and the scope of application.For example: tower granulation is selected homogeneous material usually for use, clear and definite fusing point or very narrow melting zone are arranged, and viscosity is little, and it is enough mobile and only be used for the production of granule product to require high concentration ground paste and melts to have; Fluidized bed prilling can produce the bulky grain product and scale big, but complex process, investment is high; Kneader granulation, drum granulating, rotary drum ammoniation-granulation, the slurry-spraying pelletizing of employing agglomeration operation has bigger flexibility and is widely used in the production of extensive compound fertilizer, and its shortcoming is that the product sphericity is not high, the maintenance cost height, and power consumption is big; Scales such as disk granulation and the direct-cooled granulation of steel band are less than normal, and energy consumption and output investment ratio are higher.
The production of bulky grain product is extensive use of fluidized bed prilling, drum granulating, disk granulation and the direct-cooled granulation of steel band etc., recently develop the double rotating drum fluid technology again in succession and produced the granular urea technology, patent ZL98249040.2, ZL99122286.5 has introduced the technology that drum granulating is produced granular urea, although improved granular urea production equipment efficient to a certain extent, investment and production cost have been reduced relatively, but complex structure, there are open defect in material curtain and cloth liquid, causing urine easily to penetrate the material curtain is sprayed on the rotatory drum wall, cause wall to occur scabbing than large tracts of land, need shutdown of short term to handle and influence the continuous operation of device, the investment and the administrative expenses of bi serie design increase; In addition, because solution structure of nozzle problem is relatively poor to the adaptability of nitrate, sulfate, phosphate and compound fertilizer granulating.
Summary of the invention
In order to overcome above-mentioned deficiency, the utility model aims to provide a kind of stratification mechanism of utilizing, produce the prilling granulator of high sphericity, high strength and low caking capacity bulky grain product economical and efficient, it is reliable, extensively be adapted to the production of medium scale nitrate, sulfate, phosphate, urea and composite fertilizer etc., be particularly useful for the production of bulky grain product.
The utility model adopts following technical scheme:
A kind of fluidized bed drum granulating device, comprise rotary drum, it is characterized in that: rotary drum one end is provided with fluidization air air inlet and melting charge slurry inlet tube, melting charge slurry inlet tube below is provided with products export and discharging section end cap, the rotary drum other end is provided with returning charge charging aperture and feed zone end cap, be equipped with air outlet slit at the rotary drum two ends, rotary drum inside is provided with fluid bed, comprise fluidization regions in the fluid bed, the cloth air chamber, the fluidization air pipeline, install by charging plate cloth air chamber top, dividing plate, the fluidisation plate, outlet damper constitutes certain thickness 3 ~ 5 fluidization regions, cloth air chamber below is provided with the fluidization air pipeline, fluidization air pipeline below is provided with the melting charge slurry inlet tube, evenly be provided with nozzle on this pipeline, at drum inner wall 20 ~ 22 groups of flights are installed evenly, and tilt to place with rotary drum, rotary drum is supported by two support rollers that are arranged on the rotary drum outer bottom, middle part, the rotary drum outside is provided with the travelling gear that drives drum rotating, discharging section end cap and returning charge section end cap below are respectively equipped with the end cap support, and end cap support next door is provided with support and is used to support fluidized bed plant.
The diameter of described rotary drum be 2000 ~ 3500mm, draw ratio be about 2 and drum inner wall the flight of the about 1200mm of 4 ~ 5 segment lengths is installed, flight evenly be arranged on rotating cylinder interior and with cylindrical shell angle 2 ~ 6o.
Described flight adopts the alternate layout of flight a, b of two kinds of different types, and with the cylindrical shell angle can be adjustable in 2 ~ 6o scope.
Described melting charge slurry inlet tube independent stationary is in the outlet side of fluid bed, and place about 250 ~ 300 mm in fluid bed outlet damper below, apart from about 150 ~ 200 mm zones of rotary drum center line, on the melting charge slurry inlet tube, evenly be provided with about 28 ~ 30 of the fixation pressure formula pressure jet apparatus of the about 150 ~ 180mm of spacing.
Described fluidization air pipeline be positioned at rotary drum inner and with rotary drum central cross distance be 250 ~ 300mm, fore-and-aft distance is 150 ~ 200mm; Described cloth air chamber tilts to be placed in the fluid bed and to the fluid bed products export 7 ~ 15o that tilts.
Described fluidisation plate is to form the cloth porose area on 1500 ~ 2000mm, the wide 800 ~ 1200mm of being, the high distribution grid flange that is fixed on wide 30mm of being or 20mm for the porous plate of 4mm by 3 ~ 4 block lengths, arranges evenly that with 9 * 9mm spacing several diameters are the fluidization air qi-emitting hole of 2mm on the cloth porose area.
Corresponding 3 ~ 4 district's gas distributions that also divide of described fluidization air pipeline with the fluidisation plate, in the cloth gas area, be provided with about 1150 ~ 1200 qi-emitting holes that diameter is 12mm, qi-emitting hole be uniformly distributed in apart from conduit axis be 30 ~ 35mm, along in the circumference 140o angle zone, pipeline top, this zone is consistent with the angle of inclination of cuboid cloth air chamber, is the 7 ~ 15o that tilts to the fluid bed products export.
The fluidized bed drum granulating device that the utility model provides has realized that the granulation and the dry run of melting salt, low concentration solution and suspension pasty material finished in same equipment; In order to improve fluidization efficiency and simplified structure, built-in fluid bed adopts 7 ~ 15o inclination angle, the fixing fabricated structure of thickness of feed layer and subregion gas distribution; Drum inner wall is equipped with special anti-clogging and promotes flight, simultaneously by the whole residence time of material of flight adjustable angle, to adapt to different moisture content and grain size product production; Energy-saving pressure type mechanical atomization shower nozzle is adopted in the atomizing of the solution of melting salt, low concentration and suspension pasty material, and takes corrosion-resistant and the erosion resistant design according to the different product characteristic; Two groups of house stewards are set respectively connect one group of atomizer, material curtain spraying area is optimized, prevents that feed liquid from penetrating the material curtain and being sprayed on the rotatory drum wall, cause wall to occur scabbing than large tracts of land, being convenient to does not simultaneously stop checks nozzle, improves device reliability and continuous running rate.
The beneficial effects of the utility model: (1) fluid bed combines with rotary drum can be implemented in same the equipment efficiently finishes the stratification granulation process, can give full play to the fluidization advantage and promote the drum granulating technical merit comprehensively, make work simplification, equipment manufacturing cost reduces; (2) because granulation and dry inside combination and the hot-air fluidisation bed cool drying that directly contacts improve granulation efficiency greatly, fluidization air amount and returning charge are than relatively low; (3) because the formation successively of particle, the evaporation of moisture is successively carried out, and causes high evaporation efficiency, does not need expensive additive can produce drying, closely knit, high-strength products that sphericity is high; (4) because its flexibility can not only be used for the granulation of melting salt, and can adopt the solution and the granulation of suspension pasty material of low concentration, saveall is invested and raising integrated artistic efficient greatly; (5) particle diameter of product can change by the time of staying of regulating fluidization air amount and material easily; (6) since can the pill product as crystal seed, carry out the liquid coating and produce the bulky grain product, can be used as technique for packing and use, also can be used as efficiently, device expands and can means use.
Below in conjunction with drawings and Examples the utility model is described further.
Description of drawings
Fig. 1 is the structural representation (broken section) of the utility model fluidized bed drum granulating device.
Fig. 2 is the structural representation of fluidisation plate.
Fig. 3 is the structural representation of fluidization air pipeline cloth gas area.
Fig. 4 is the left view of Fig. 3.
Fig. 5 is the structural representation of flight.
1 is rotary drum among the figure; 2 is fluid bed; 2a is a charging plate; 2b is a dividing plate; 2c is the fluidisation plate; 2d is an outlet damper; 2c-1 is a bolt; 2c-2 is the distribution grid flange; 2c-3 is the cloth porose area; 2c-4 is the hole; 3 is the melting charge slurry inlet tube; 4 is nozzle; 5 are the returning charge import; 6 are returning charge section end cap; 7 is the discharging section end cap; 8 is the fluidization air air inlet; 8a is the cloth gas area; 8b is non-cloth gas area; 8c is a conduit axis; 9 is the fluidization air pipeline; 10 is products export; 11 is air outlet slit; 12 is flight; 12a, 12b are respectively flight; 12c is a helical member; 13 is supporting rollern; 14 is travelling gear; 15 is support; 16 is the end cap support.
The specific embodiment
Embodiment 1:
The description of the process of the utility model drum granulating device: referring to accompanying drawing 1, the solid returning charge advances and is promoted to cylinder top by flight 12 after returning charge import 5 enters rotary drum 1, fall on the fluid bed 2 and be fluidized air cooling or dry, flow to fluid bed edge outlet damper then and fall into the bottom of cylinder, form evenly and certain thickness material curtain arranged.In dropping process, be melted liquid or the slip nozzle 4 on the fluidization air pipeline and spray, applied particle is promoted on the fluid bed 2 by flight 12 again, and its new life's surface is cooled and water evaporates.This process constantly circulates, and discharges from products export 10 up to meeting the requirements.
The device structure explanation: Fig. 1 shows the structural representation of the utility model fluidized bed drum granulating device.The utility model fluidized bed drum granulating device comprises that diameter is that 2000 ~ 3500mm, draw ratio are about 2 rotation rotary drum 1, built-in fluid bed 2, melting charge slurry inlet tube 3 and nozzle 4 thereof, returning charge import 5, returning charge section end cap 6, discharging section end cap 7, fluidization air pipeline 9, flight 12, supporting rollern 13, travelling gear 14, support 15, end cap support 16.Rotary drum 1 is by two groups of supporting rollerns, 13 supportings that are positioned at both sides, and the travelling gear 14 that is positioned at central authorities drives drum rotating, the rotary drum 1 inwall installation about 1200mm of 4 ~ 5 segment lengths and cylindrical shell angle 2 ~ 6o and 20 ~ 22 groups of flights evenly arranging.Returning charge section end cap 6 and discharging section end cap 7 are respectively by the 16 fixing and supportings of end cap support, and at the top all supporting import and export sealing flange that fluidization air outlet 11 and fluidization air pipeline 9 are arranged, returning charge section end cover 6 also is equipped with solid returning charge import 5, and discharging section end cap 7 belows are provided with products export 10.Built-in fluid bed 2 forms a whole with fluidization air pipeline 9 and by the support 15 fixing and supportings that place two sections respectively, fluidization air pipeline 9 be arranged in rotary drum inner and with rotary drum central cross distance be 250 ~ 300mm, fore-and-aft distance is 150 ~ 200mm, fluidization air pipeline 9 is positioned at the cuboid cloth air chamber bottom to fluidised bed material outlet inclination 7 ~ 15o, the fluidisation plate 2c by dividing plate 2b subregion is installed in cloth air chamber top, and constitutes certain thickness 3 ~ 5 fluidization regions by fluidisation plate 2c, dividing plate 2b, charging plate 2a and outlet damper 2d.Melting charge slurry inlet tube 3 is fixed in the outlet side of fluid bed 2, and places material about 250 ~ 300 mm in curtain below and apart from about 150 ~ 200 mm zones of center line, about 28 ~ 30 of the fixation pressure formula pressure jet apparatus of the about 150 ~ 180mm of uniform spacing on the melting charge slurry inlet tube 3.
Fig. 2 to Fig. 4 shows fluidisation plate and fluidization air pipeline gas distribution structural representation.To be 1500 ~ 2000mm, the wide 800 ~ 1200mm of being, high porous plate for 4mm with the bolt 2c-1 of M6 be fixed on the wide distribution grid flange 2c-2 for 30mm the fluidisation plate 2c of the built-in fluid bed 2 of the utility model forms cloth porose area 2c-3 by length, arranges evenly that with 9 * 9mm spacing several diameters are the hole 2c-4 of 2mm on cloth porose area 2c-3.Corresponding 3 ~ 4 district gas distribution 8a that also divide of fluidization air pipeline with the fluidisation porous plate, the qi-emitting hole 8g that about 1150 ~ 1200 diameters are 12mm in the 8a of cloth gas area be uniformly distributed in along conduit axis 8c spacing be 30 ~ 35mm, along in the 8f spacing 10o zone in the circumference 140o angle of pipeline top, the consistent 8d of inclination of pipeline top circumference 140o angle 8f and cuboid cloth air chamber is for to fluid bed products export inclination 7 ~ 15o and keep the imperforate section 8e of 20o.
Fig. 5 shows the structural representation of flight.After 4 ~ 5 sections flights 12 that the utility model rotary drum 1 inwall is installed are distributed in import helical member 12c by flight 12a, the 12b of two kinds of different types is alternate.
Claims (7)
1. fluidized bed drum granulating device, comprise rotary drum, it is characterized in that: rotary drum one end is provided with fluidization air air inlet and melting charge slurry inlet tube, melting charge slurry inlet tube below is provided with products export and discharging section end cap, the rotary drum other end is provided with returning charge charging aperture and feed zone end cap, be equipped with air outlet slit at the rotary drum two ends, rotary drum inside is provided with fluid bed, comprise fluidization regions in the fluid bed, the cloth air chamber, the fluidization air pipeline, install by charging plate cloth air chamber top, dividing plate, the fluidisation plate, outlet damper constitutes certain thickness 3 ~ 5 fluidization regions, cloth air chamber below is provided with the fluidization air pipeline, fluidization air pipeline below is provided with the melting charge slurry inlet tube, evenly be provided with nozzle on this pipeline, at drum inner wall 20 ~ 22 groups of flights are installed evenly, and tilt to place with rotary drum, rotary drum is supported by two support rollers that are arranged on the rotary drum outer bottom, middle part, the rotary drum outside is provided with the travelling gear that drives drum rotating, discharging section end cap and returning charge section end cap below are respectively equipped with the end cap support, and end cap support next door is provided with support and is used to support fluidized bed plant.
2. fluidized bed drum granulating device according to claim 1, it is characterized in that: the diameter of described rotary drum be 2000 ~ 3500mm, draw ratio be about 2 and drum inner wall the flight of the about 1200mm of 4 ~ 5 segment lengths is installed, flight evenly be arranged on rotating cylinder interior and with cylindrical shell angle 2 ~ 6o.
3. fluidized bed drum granulating device according to claim 1 and 2 is characterized in that: described flight adopts the alternate layout of flight a, b of two kinds of different types, and with the cylindrical shell angle can be adjustable in 2 ~ 6o scope.
4. fluidized bed drum granulating device according to claim 1, it is characterized in that: described melting charge slurry inlet tube independent stationary is in the outlet side of fluid bed, and place about 250 ~ 300 mm in fluid bed outlet damper below, apart from about 150 ~ 200 mm zones of rotary drum center line, on the melting charge slurry inlet tube, evenly be provided with about 28 ~ 30 of the fixation pressure formula pressure jet apparatus of the about 150 ~ 180mm of spacing.
5. fluidized bed drum granulating device according to claim 1 is characterized in that: described fluidization air pipeline be positioned at rotary drum inner and with rotary drum central cross distance be 250 ~ 300mm, fore-and-aft distance is 150 ~ 200mm; Described cloth air chamber tilts to be placed in the fluid bed and to the fluid bed products export 7 ~ 15o that tilts.
6. fluidized bed drum granulating device according to claim 1, it is characterized in that: described fluidisation plate is to form the cloth porose area on 1500 ~ 2000mm, the wide 800 ~ 1200mm of being, the high distribution grid flange that is fixed on wide 30mm of being or 20mm for the porous plate of 4mm by 3 ~ 4 block lengths, arranges evenly that with 9 * 9mm spacing several diameters are the fluidization air qi-emitting hole of 2mm on the cloth porose area.
7. fluidized bed drum granulating device according to claim 1, it is characterized in that: corresponding 3 ~ 4 district's gas distributions that also divide of described fluidization air pipeline with the fluidisation plate, in the cloth gas area, be provided with about 1150 ~ 1200 qi-emitting holes that diameter is 12mm, qi-emitting hole be uniformly distributed in apart from conduit axis be 30 ~ 35mm, along in the circumference 140o angle zone, pipeline top, this zone is consistent with the angle of inclination of cuboid cloth air chamber, is the 7 ~ 15o that tilts to the fluid bed products export.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206936281U CN201959772U (en) | 2010-12-31 | 2010-12-31 | Rotary-drum granulator with fluidized bed |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206936281U CN201959772U (en) | 2010-12-31 | 2010-12-31 | Rotary-drum granulator with fluidized bed |
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| Publication Number | Publication Date |
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| CN201959772U true CN201959772U (en) | 2011-09-07 |
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| CN2010206936281U Expired - Lifetime CN201959772U (en) | 2010-12-31 | 2010-12-31 | Rotary-drum granulator with fluidized bed |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102519230A (en) * | 2011-12-16 | 2012-06-27 | 惠生工程（中国）有限公司 | Solid fuel drying equipment |
| CN102659488A (en) * | 2012-05-10 | 2012-09-12 | 广西得盛生物科技有限公司 | High-nitrogen compound fertilizer steam-free granulating device for improvement of rotary dryer |
| CN104275122A (en) * | 2013-07-08 | 2015-01-14 | 江苏瑞安特重型机械有限公司 | Mixed granulation flow unit |
| CN104276863A (en) * | 2013-07-04 | 2015-01-14 | 江苏瑞安特重型机械有限公司 | Rotary drum granulator |
| CN107245571A (en) * | 2017-07-13 | 2017-10-13 | 攀钢集团攀枝花钢铁研究院有限公司 | A kind of ilmenite concentrate granulation hardening agent and a kind of prilling process of ilmenite concentrate |
| CN107838429A (en) * | 2017-10-17 | 2018-03-27 | 广西金川有色金属有限公司 | A kind of efficient high-temperature fusant granulating device |
| CN108264396A (en) * | 2017-10-18 | 2018-07-10 | 锦西天然气化工有限责任公司 | A kind of composite heat transfer system and its production technology |
| CN112624884A (en) * | 2020-12-16 | 2021-04-09 | 山东省农业科学院农业资源与环境研究所 | Rotary drum coating, fluidizing, drying and film forming system for water-based resin coated slow-release fertilizer |
-
2010
- 2010-12-31 CN CN2010206936281U patent/CN201959772U/en not_active Expired - Lifetime
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102519230A (en) * | 2011-12-16 | 2012-06-27 | 惠生工程（中国）有限公司 | Solid fuel drying equipment |
| CN102519230B (en) * | 2011-12-16 | 2014-07-09 | 惠生工程（中国）有限公司 | Solid fuel drying equipment |
| CN102659488A (en) * | 2012-05-10 | 2012-09-12 | 广西得盛生物科技有限公司 | High-nitrogen compound fertilizer steam-free granulating device for improvement of rotary dryer |
| CN104276863A (en) * | 2013-07-04 | 2015-01-14 | 江苏瑞安特重型机械有限公司 | Rotary drum granulator |
| CN104275122A (en) * | 2013-07-08 | 2015-01-14 | 江苏瑞安特重型机械有限公司 | Mixed granulation flow unit |
| CN107245571A (en) * | 2017-07-13 | 2017-10-13 | 攀钢集团攀枝花钢铁研究院有限公司 | A kind of ilmenite concentrate granulation hardening agent and a kind of prilling process of ilmenite concentrate |
| CN107245571B (en) * | 2017-07-13 | 2019-04-09 | 攀钢集团攀枝花钢铁研究院有限公司 | A kind of a kind of ilmenite concentrate granulation prilling process of hardening agent and ilmenite concentrate |
| CN107838429A (en) * | 2017-10-17 | 2018-03-27 | 广西金川有色金属有限公司 | A kind of efficient high-temperature fusant granulating device |
| CN108264396A (en) * | 2017-10-18 | 2018-07-10 | 锦西天然气化工有限责任公司 | A kind of composite heat transfer system and its production technology |
| CN112624884A (en) * | 2020-12-16 | 2021-04-09 | 山东省农业科学院农业资源与环境研究所 | Rotary drum coating, fluidizing, drying and film forming system for water-based resin coated slow-release fertilizer |
| CN112624884B (en) * | 2020-12-16 | 2024-02-02 | 山东省农业科学院农业资源与环境研究所 | Rotary drum coating fluidization drying film forming system for water-based resin coated slow release fertilizer |
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Granted publication date: 20110907 |
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| CX01 | Expiry of patent term |