CN102503674B - Method for coating diammonium phosphate product - Google Patents
Method for coating diammonium phosphate product Download PDFInfo
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- CN102503674B CN102503674B CN201110326697.8A CN201110326697A CN102503674B CN 102503674 B CN102503674 B CN 102503674B CN 201110326697 A CN201110326697 A CN 201110326697A CN 102503674 B CN102503674 B CN 102503674B
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Abstract
The invention discloses a method for coating a diammonium phosphate product. The method comprises the following steps of: (1) improving a nozzle of a coating oil pipe line to a net-like spraying net type nozzle; (2) additionally arranging an instrument air blowing pipe line in front of the nozzle of the coating oil pipe line, wherein the diameter of the instrument air blowing pipe line is the same as that of the coating oil pipe line, and the pressure of instrument air is 0.5-0.6 MPa and is the same as the instrument air in a factory; (3) additionally arranging an instrument blowing pipe line at an outlet of a coating oil pump to blow residual coating oil in the pipeline when parking, so that the pipe line is prevented from being blocked; and (4) low-temperature steam tracing and heat preservation on the coating oil pipe line. With the adoption of the method disclosed by the invention, the product is coated more stably and more uniformly, the consumption of the coating oil is relatively reduced, and the outer appearance and the quality of the product are greatly improved. The method disclosed by the invention is suitable for manufacturers for producing the diammonium phosphate product.
Description
Technical field
The present invention relates to phosphate fertilizer, relate in particular to diammonium phosphate, relate in particular to its packaging method.
Background technology
Traditional granular phosphate fertilizer product needs to wrap up conventionally, adopts parcel oil to carry out external parcel to material shape diammonium phosphate or phosphorus compound fertilizer, and the dust of the generation of its main purpose or reduction products production and transportation, reduces the weathering causing because of extruding in transportation; Or in order to use as slow-release fertilizer.
The technique for packing that diammonium phosphate product is taked is conventionally with parcel oil pump, parcel oil to be squeezed in parcel cylinder by pipeline, then rely on the pressure of pump, from pipeline outlet nozzle, be sprinkling upon product surface, then drive transhipment, evenly mix with parcel oil by the spiral flight of parcel cylinder, reach parcel object.The defect that this parcel mode exists mainly contains: 1. when the oily viscosity of parcel is when larger, it is got while contact with product material through pump, may have maldistribution phenomenon, particularly wraps up that oily Heating temperature is inadequate, viscosity is larger time, and situation more very; 2. when the rotor of pump and stator intermittently expand because wearing and tearing cause, its pressure drop, pump is got while contacting with material, has maldistribution phenomenon; 3. the residual parcel oil of pipeline during termination of pumping, easy blocking pipeline, gives to open next time and time causes trouble; While purging plugging with steam, moisture can be brought in product, be caused that product moisture exceeds standard, surperficial efflorescence, appearance color turn white.
Through retrieval, in Chinese patent database, relate to the parcel that only has a No. 200510003301.0 < < diammonium phosphate product of phosphorus ammonium parcel and the preparation method > > of method of cooling > > and No. 200810119314.8 < < microencapsulated ammonium polyphosphates, there is no the scheme of improving diammonium phosphate product technique for packing.
Summary of the invention
The packaging method that the object of this invention is to provide a kind of diammonium phosphate product, while wrapping up to solve diammonium phosphate product, parcel oil content is joined inequality, causes the bad difficult problem of parcel effect.
Contriver is by repeatedly studying, testing, find the crux of problem to be: as long as can guarantee to wrap up the flow velocity that wraps up oily material in oil pipeline, reduce the impact of viscosity, give parcel oil an impellent, allow parcel oil content spread more even, divide the face that spreads and wider with the contact surface of material, just can fully contact, reach better parcel effect; The residual parcel oil of simultaneously taking measures to drain pipeline when parking termination of pumping, reduces the risk of the oily blocking pipeline of parcel, and with steaming out plugging, causes the risk of product contamination.
The concrete grammar that contriver provides, comprises following measure:
(1) by the webbed spray net formula shower nozzle of shower nozzle process transformation of parcel oil pipeline;
(2) before parcel oil pipeline shower nozzle, increase by one section of instrument air and help scavenging line, instrument air helps scavenging line identical with parcel oil pipeline diameter, and the pressure-controlling of instrument air is 0.5-0.6MPa, identical with the instrument air of factory;
(3) in the outlet of parcel oil pump, set up an instrument scavenging line, object is when stopping, the residual parcel oil in pipeline to be blown out, and prevents that pipeline from stopping up;
(4) parcel oil pipeline is taked low-pressure steam tracing thermal-insulating.
Above-mentioned parcel oil pipeline and instrument air help scavenging line caliber to be DN25.
The temperature of above-mentioned parcel oil pipeline remains on 65 ℃～70 ℃.
Contriver points out: with instrument air, without the object of plant compressed air, be because instrument air has been processed, removed airborne moisture through certain drying process at compression factory building, do not basically contain water; And factory air is not through drying process processing, in its composition, also contain the water of quite a few, warp is sprayed at the outside surface of product pellet together with parcel oil, causes product moisture to increase, and causes quality product to change and nutrient reduction.
Concrete using method of the present invention is: when production equipment is driven, after baggage systems device start, product starts parcel; At this moment press product extracted amount, utilize frequency transformer to regulate the rotating speed size of parcel oil pump to regulate the oily consumption size of parcel.After pump transhipment is normal, open instrument air pipeline valve, first open certain aperture, then progressively end; Observe parcel oil flowmeter and show whether size has fluctuation, as fluctuation more reduces valve opening; Observe product parcel effect simultaneously.During parking, after termination of pumping, close the imported valve of pump, open pump outlet instrument air pipeline valve, use instrument air scavenging line more than 5 minutes, to guarantee the unimpeded of pipeline.
Use the inventive method, product parcel is more stable, more even, and parcel oil consumption reduces relatively, and product appearance quality is much improved.Be applicable to produce the producer of diammonium phosphate product.
Accompanying drawing explanation
Fig. 1 is the schematic flow sheet of the inventive method, and Fig. 2 is the front view of parcel oil pipe shower nozzle, and Fig. 3 is the vertical view of parcel oil pipe shower nozzle.In figure, 1 is parcel oil pipe shower nozzle, and 2 is parcel cylinder, and 3 is parcel oil pump, and 4 is instrument air pipeline, and 5 is parcel oil groove, and 6 is manually operated control valve.
Embodiment
embodimentwengfu Group Co., Ltd.'s diammonium phosphate device single series production capacity is 600kt/a, and two series all adopt this technique to carry out the parcel of product.
The concrete measure of implementing is as follows: by the shower nozzle of parcel oil pipeline through being transformed into as Fig. 2,3 netted spray net formula shower nozzle; Before the parcel oil pipeline shower nozzle that is DN25 at caliber, increase the instrument air that one section of caliber is DN25 and help scavenging line, the pressure-controlling of instrument air is 0.5-0.6MPa, identical with the instrument air of factory; Parcel oil pipeline takes low-pressure steam tracing thermal-insulating at 70 ℃～80 ℃.
Technological operation step is as follows: when production equipment is driven, after device start, product starts parcel, at this moment according to normal parcel, regulates, and according to product extracted amount, regulates the rotating speed size of parcel oil pump, regulates the oily consumption size of parcel; After pump transhipment is normal, open instrument air pipeline valve, first slowly open valve opening, then progressively valve is ended; Observe parcel oil flowmeter and show size, whether have fluctuation, as larger in fluctuation, reduce valve opening; Observe product parcel effect simultaneously; During parking, after termination of pumping, close the imported valve of pump, open pump outlet instrument air pipeline valve, use instrument air scavenging line more than 5 minutes, to guarantee the unimpeded of pipeline.
Illustrate: general product wrapping oil consumption is 1～2kg/t, according to product extracted amount, can calculate total parcel oil demand, then with frequency transformer, regulate the rotating speed of pump, according under meter, show, till being transferred to the total demand of joint.But actual parcel oil demand regulates by the parcel effect of product.
Implement one year over, parcel effect is very obvious.
Claims (3)
1. a packaging method for diammonium phosphate product, its feature comprises following measure:
(1) by the webbed spray net formula shower nozzle of shower nozzle process transformation of parcel oil pipeline;
(2) before parcel oil pipeline shower nozzle, increase by one section of instrument air and help scavenging line, instrument air helps scavenging line identical with parcel oil pipeline diameter, and the pressure-controlling of instrument air is 0.5-0.6MPa, identical with the instrument air of factory;
(3) in the outlet of parcel oil pump, set up an instrument scavenging line, object is when stopping, the residual parcel oil in pipeline to be blown out, and prevents that pipeline from stopping up;
(4) parcel oil pipeline is taked low-pressure steam tracing thermal-insulating.
2. the method for claim 1, is characterized in that described parcel oil pipeline and instrument air help scavenging line caliber to be DN25.
3. the method for claim 1, is characterized in that the temperature of described parcel oil pipeline remains on 70 ℃～80 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110326697.8A CN102503674B (en) | 2011-10-25 | 2011-10-25 | Method for coating diammonium phosphate product |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110326697.8A CN102503674B (en) | 2011-10-25 | 2011-10-25 | Method for coating diammonium phosphate product |
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| Publication Number | Publication Date |
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| CN102503674A CN102503674A (en) | 2012-06-20 |
| CN102503674B true CN102503674B (en) | 2014-05-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201110326697.8A Active CN102503674B (en) | 2011-10-25 | 2011-10-25 | Method for coating diammonium phosphate product |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005319417A (en) * | 2004-05-11 | 2005-11-17 | Chisso Corp | Particle coating apparatus and production method for coated particle using the same |
| CN1793062A (en) * | 2005-11-29 | 2006-06-28 | 贵阳中化开磷化肥有限公司 | Process for packing products of diaminium phosphate and cooling process |
| CN2905783Y (en) * | 2005-12-09 | 2007-05-30 | 广东福利龙复合肥有限公司 | Envelope device for producing compound mixing fertilizer |
| CN201068431Y (en) * | 2007-07-08 | 2008-06-04 | 湖北洋丰股份有限公司 | Particle composite fertilizer integument oil heating injection device |
| CN201783419U (en) * | 2010-07-28 | 2011-04-06 | 周进山 | Modified compound fertilizer coating nozzle |
-
2011
- 2011-10-25 CN CN201110326697.8A patent/CN102503674B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005319417A (en) * | 2004-05-11 | 2005-11-17 | Chisso Corp | Particle coating apparatus and production method for coated particle using the same |
| CN1793062A (en) * | 2005-11-29 | 2006-06-28 | 贵阳中化开磷化肥有限公司 | Process for packing products of diaminium phosphate and cooling process |
| CN2905783Y (en) * | 2005-12-09 | 2007-05-30 | 广东福利龙复合肥有限公司 | Envelope device for producing compound mixing fertilizer |
| CN201068431Y (en) * | 2007-07-08 | 2008-06-04 | 湖北洋丰股份有限公司 | Particle composite fertilizer integument oil heating injection device |
| CN201783419U (en) * | 2010-07-28 | 2011-04-06 | 周进山 | Modified compound fertilizer coating nozzle |
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|---|---|
| CN102503674A (en) | 2012-06-20 |
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Address after: 550500 Guizhou Province, Qiannan Buyei and Miao Autonomous Prefecture Fuquan Racecourse town Yingbin Road No. 1 Wengfu group Patentee after: WENGFU GROUP Co.,Ltd. Address before: 23, 550002 floor, urn Fuk international, No. 57, South City Road, Guizhou, Guiyang Patentee before: WENGFU GROUP Co.,Ltd. |
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