CN103664239B - For the production of diammonium phosphate spray granulating machine - Google Patents
For the production of diammonium phosphate spray granulating machine Download PDFInfo
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- CN103664239B CN103664239B CN201310631432.8A CN201310631432A CN103664239B CN 103664239 B CN103664239 B CN 103664239B CN 201310631432 A CN201310631432 A CN 201310631432A CN 103664239 B CN103664239 B CN 103664239B
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Abstract
The present invention relates to a kind of for the production of diammonium phosphate spray granulating machine; comprise kiln body, tubular reactor and the central tubular beam be arranged in kiln body and ammonia sparger; tubular reactor is arranged on kiln body head; the nozzle segment of tubular reactor is arranged on below the central tubular beam in kiln body; the nozzle of tubular reactor is arranged on tube wall lower part of the nozzle segment of ammonia sparger side, and nozzle symmetry centre is 30 ° ~ 40 ° to the line of nozzle segment symmetry centre and the angle α of horizontal direction.By changing nozzle location and the slip injection direction of tubular reactor, the sealing property of kiln hood can be improved, improving operation rate, reduce labor intensity of operating staff.
Description
Technical field
The present invention relates to a kind of for the production of diammonium phosphate spray granulating machine.
Background technology
Diammonium phosphate is a kind of binary high-efficiency compound fertilizer of nitrogenous, phosphorus two kinds of nutritive elements, and it is widely used in agriculture production.The production of diammonium phosphate relies on the neutralization reaction of strong phosphoric acid and liquefied ammonia; diammonium phosphate slurry further ammonification in tablets press that reaction generates, transpiring moisture form diammonium phosphate particle, then the diammonium phosphate finished product that output is qualified after super-dry, screening, cooling parcel.
It is several that the neutralization reactor of current diammonium phosphate mainly contains pre-neutralization groove ammoniator, external circulation ammoniation device, tubular reactor etc.Through the exploitation of decades, the taste of current phosphorus ore declines year by year, adopt the monoammonium phosphate device of preneutralization process or outside circulation technique due to the neutralization reaction residence time long, side reaction is many, and quality product is difficult to be guaranteed; Simultaneously owing to needing to be sent by pumping to granulation in tablets press with slip in it; for ensureing that the mobility of slip reaches about 20% with the water ratio of slip in must making; this just causes neutralization reaction heat not to be fully utilized; also needing more heat to carry out drying ammonium phosphate particle makes its water content reach requirement, does not meet the requirement of energy-conserving and environment-protective.Neutralization reaction speed due to diammonium phosphate depends primarily on the mixing velocity of wherein propylhomoserin two kinds of materials, and therefore tubular reactor has the advantages such as reaction time is short, side reaction is few, and quality product can be guaranteed.The slip that simultaneously tubular reactor generates directly sprays into tablets press, therefore and slip without the need to very high water ratio, heat utilization ratio is high.
Its nozzle of tubular reactor generally adopted at present is the end at its nozzle segment; its structure as shown in Figure 1; tubular reactor 2 is arranged on the afterbody 12 of tablets press and in insertion tablets press kiln body 1 at an angle, the distributed areas 3 of the slip that tubular reactor 2 nozzle sprays in kiln body 1 are close to kiln hood 11.Injection direction due to slip sprays to kiln hood 11 from kiln tail 12, because in slip, moisture content is higher, the water vapour that moisture flash distillation is formed is long-pending in kiln hood 11 richness, form the malleation of local, tail gas generated by granulation overflows from the gap 13 of the sealing-ring of kiln hood 11, phosphorus ammonium particle simultaneously in kiln is easily blown out from the gap 13 of sealing-ring by air-flow, causes site work environment to worsen.Simultaneously; the still undried phosphor ammonium slurry of a part is bonded on the sealing-ring of kiln hood 11 along with air-flow; stop once tablets press; after the slip solidification of bonding, sealing-ring is tied; the locking of sealing-ring dynamic and static ring is very easily there is when again driving; the equipment breakdown such as cause the revert pipe be fixed on stationary ring to be pulled off, affects the operation factor of device.In addition, the heat generated due to reaction can not be taken away smoothly, and prilling temperature is interval higher than the prilling temperature of matters, easily generates bulk in kiln, and tablets press blanking is moist, easily blocks emission of baiting chute, increases the labour intensity of operator.
Summary of the invention
The object of the invention is for the deficiencies in the prior art part; there is provided a kind of for the production of diammonium phosphate spray granulating machine; the water vapour that in kiln, in slip, the flash distillation of moisture is formed is evenly distributed; the sealing property of kiln hood can be improved; improve production environment; improve operation rate, reduce labor intensity of operating staff.
Present invention employs following technical scheme: comprise kiln body, the tubular reactor spraying phosphor ammonium slurry in kiln body and the central tubular beam be arranged in kiln body and ammonia sparger, tubular reactor is arranged on kiln body head, the nozzle segment of tubular reactor is arranged on below the central tubular beam in kiln body, the nozzle of tubular reactor is arranged on tube wall lower part of the nozzle segment of ammonia sparger side, and nozzle symmetry centre is 30 ° ~ 40 ° to the line of nozzle segment symmetry centre and the angle α of horizontal direction.
Because tubular reactor nozzle is arranged on the sidewall of nozzle segment, slip is injected on material bed to kiln body sidewall direction, the water vapour that in slip, moisture flash distillation is formed can spread rapidly at two ends end to end to kiln body, rich can not amass the malleation forming local at kiln hood, the sealing property of kiln hood is improved, and there will not be slip particle to leak situation, not only production operation environment can improve, can also operation rate be improved, reduce labor intensity of operating staff.
Further, the nozzle segment of tubular reactor is provided with two nozzles, lays respectively at the both sides of first group of ammonia sparger.Slip is atomized fully come and fully mix with returning charge, the liquefied ammonia that first group of ammonia sparger both sides notch ejects can rapidly will the slip secondary ammoniation of ejection, and the slip that evaporation is coated on returning charge grain core surface rapidly completes granulating.
Further, the nozzle notch of tubular reactor is rectangle, and its long limit is in being horizontally disposed with.The slip that this set enables notch spray is evenly distributed in tablets press bed of material most external region, the rapid ammonification of liquefied ammonia that simultaneously can be sprayed by ammonia sparger.
Further, the notch area of second nozzle is greater than the notch area of first jet.The slip of second nozzle ejection can by the liquefied ammonia secondary ammoniation of its both sides ammonia sparger ejection.
As shown from the above technical solution, the present invention is by changing nozzle placement position and the slip injection direction of tubular reactor, the water vapour that in slip, moisture flash distillation is formed is spread rapidly at two ends end to end to kiln body, rich can not amass the malleation forming local at kiln hood, the sealing property of kiln hood is improved, and there will not be slip particle to leak situation, not only production operation environment can improve, can also operation rate be improved, reduce labor intensity of operating staff.
Accompanying drawing explanation
Fig. 1 is the installation site schematic diagram of existing tubular reactor in tablets press kiln body.
Fig. 2 is kiln body local structure schematic diagram of the present invention.
Fig. 3 is along the vertical view that A-A line cuts open in Fig. 2.
Embodiment
As shown in Figures 2 and 3, comprise kiln body 1, in kiln body, spray the tubular reactor 2 of phosphor ammonium slurry and the central tubular beam 5 that is arranged in kiln body and three groups of ammonia spargers 41,42,43, three groups of ammonia sparger intervals are identical.The ammonia spout of ammonia sparger is rectangle notch, injection direction and tablets press centerline axis parallel, and wherein first group of ammonia sparger 41 and second group of ammonia sparger 42 are two-way spout, and the 3rd group of ammonia sparger 43 is the unidirectional spouts towards kiln hood 11 direction.
Tubular reactor 2 is arranged on kiln hood 11 position, and the nozzle segment 21 of tubular reactor 2 is set in parallel in immediately below the central tubular beam 5 in kiln body 1.
The nozzle segment 21 of tubular reactor 2 is provided with two nozzles 211,212, two nozzles 211,212 are arranged on tube wall lower part of the nozzle segment 21 of ammonia sparger 41,42,43 side, and nozzle symmetry centre is 30 ° ~ 40 ° to the line 7 of nozzle segment symmetry centre with the angle α of horizontal direction 6, preferred angle α angle is 32 ° ~ 35 °.Two nozzles 211,212 lay respectively at the both sides of first group of ammonia sparger 41, and second nozzle 212 is positioned in the middle of first group of ammonia sparger 41 and second group of ammonia sparger 42.
The notch of nozzle 211,212 is rectangle, and its long limit is in being horizontally disposed with.The width of two nozzles 211,212 is identical, considers that second nozzle 212 is between two groups of ammonia spargers 41,42, and whitewashing amount should more than the whitewashing amount of first jet 211, and therefore, the length of second nozzle 212 is greater than first jet 212.
Claims (3)
1. for the production of diammonium phosphate spray granulating machine, comprise kiln body (1), the tubular reactor (2) of phosphor ammonium slurry and the central tubular beam (5) be arranged in kiln body and ammonia sparger (41 is sprayed in kiln body, 42, 43), it is characterized in that: tubular reactor (2) is arranged on kiln body head (11), the nozzle segment (21) of tubular reactor is arranged on central tubular beam (5) below in kiln body, nozzle segment (21) is provided with two nozzles (211, 212), lay respectively at the both sides of first group of ammonia sparger (41), described nozzle (211, 212) tube wall lower part of the nozzle segment (21) of ammonia sparger side is arranged on, and nozzle symmetry centre is 30 ° ~ 40 ° to the line (7) of nozzle segment symmetry centre and the angle α of horizontal direction (6).
2. according to claim 1 for the production of diammonium phosphate spray granulating machine, it is characterized in that: nozzle (211, the 212) notch of tubular reactor is rectangle, and its long limit is in being horizontally disposed with.
3. according to claim 2 for the production of diammonium phosphate spray granulating machine, it is characterized in that: the notch area of second nozzle (212) is greater than the notch area of first jet (211).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310631432.8A CN103664239B (en) | 2013-11-29 | 2013-11-29 | For the production of diammonium phosphate spray granulating machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310631432.8A CN103664239B (en) | 2013-11-29 | 2013-11-29 | For the production of diammonium phosphate spray granulating machine |
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| Publication Number | Publication Date |
|---|---|
| CN103664239A CN103664239A (en) | 2014-03-26 |
| CN103664239B true CN103664239B (en) | 2015-08-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310631432.8A Active CN103664239B (en) | 2013-11-29 | 2013-11-29 | For the production of diammonium phosphate spray granulating machine |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105272383B (en) * | 2015-10-15 | 2019-03-22 | 山西磊鑫化工有限公司 | A kind of spherical nitric acid calcium and magnesium and its manufacturing method |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2030370C1 (en) * | 1991-05-28 | 1995-03-10 | Череповецкое акционерное общество открытого типа "Аммофос" | Installation for production of diammonium phosphate |
| CN201842646U (en) * | 2010-09-19 | 2011-05-25 | 贵州开磷（集团）有限责任公司 | Tubular reactor for producing diammonium phosphate by using phosphoric acid containing high-content magnesium oxide |
| CN202131232U (en) * | 2011-07-18 | 2012-02-01 | 湖北三宁化工股份有限公司 | Ammonifying device of diammonium phosphate granulating machine |
| CN202499710U (en) * | 2012-02-06 | 2012-10-24 | 湖北宜化肥业有限公司 | Single-pipe reactor for producing diammonium phosphate |
| CN102674904B (en) * | 2012-05-18 | 2013-11-06 | 甘肃瓮福化工有限责任公司 | Diammonium phosphate system and production technique for producing diammonium phosphate with single-tube reactor |
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