CN102503674A - Method for coating diammonium phosphate product - Google Patents
Method for coating diammonium phosphate product Download PDFInfo
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- CN102503674A CN102503674A CN2011103266978A CN201110326697A CN102503674A CN 102503674 A CN102503674 A CN 102503674A CN 2011103266978 A CN2011103266978 A CN 2011103266978A CN 201110326697 A CN201110326697 A CN 201110326697A CN 102503674 A CN102503674 A CN 102503674A
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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 parcel usually, and promptly employing parcel oil carries out external parcel to material shape diammonium phosphate or the multiple fertilizer of phosphorus, and the dust of the generation of its main purpose or reduction products production and transportation reduces the weathering that causes because of extruding in the transportation; Perhaps in order to use as slow-release fertilizer.
The technique for packing that diammonium phosphate product is taked usually is will wrap up oil with the parcel oil pump to squeeze in the parcel tube through pipeline; Rely on the pressure of pump then; Be sprinkling upon product surface from the pipeline outlet nozzle, again the spiral flight through parcel tube drive transhipment, with the oily uniform mixing of parcel, reach the parcel purpose.The defective that this parcel mode exists mainly contains: 1. when the oily viscosity of parcel is big, it is got when contact with the product material through pump, possibly have the maldistribution phenomenon, particularly wrap up oily Heating temperature inadequately, when viscosity is bigger, situation is more very; 2. when the rotor of pump and stator intermittently enlarged because of wearing and tearing cause, its pressure descended, and when pump is got and contacted with material, had the maldistribution phenomenon; 3. the residual parcel oil of pipeline during termination of pumping, the easy blocking pipeline is given to open next time and time is caused trouble; When purging plugging, can moisture be brought in the product, cause that product moisture exceeds standard, surperficial efflorescence, appearance color turn white with steam.
Through retrieval; Relate to only the having of phosphorus ammonium parcel No. 200510003301.0 " a kind of parcel of diammonium phosphate product and method of cooling " and No. 200810119314.8 " preparation method of microencapsulated ammonium polyphosphate " in the Chinese patent DB, still do not have the scheme of improvement diammonium phosphate product technique for packing.
Summary of the invention
The packaging method that the purpose of this invention is to provide a kind of diammonium phosphate product, when wrapping up to solve diammonium phosphate product, the parcel oil content is joined inequality, causes the bad difficult problem of parcel effect.
The contriver is through study, test repeatedly; Find the crux of problem to be: as long as can guarantee to wrap up the flow velocity of the oily material of parcel in the oil pipeline, to reduce the influence of viscosity, give parcel oil an impellent; Let the parcel oil content spread more even; Divide the face that spreads and wider, just can fully contact, reach better parcel effect with the contact surface of material; Take measures when the parking termination of pumping, to drain the residual parcel oil of pipeline simultaneously, reduce the risk of the oily blocking pipeline of parcel and cause the risk of product contamination with the steaming out plugging.
The concrete grammar that the contriver provides comprises following measure:
⑴ will wrap up the shower nozzle of oil pipeline through transforming webbed spray net formula shower nozzle;
(2) before parcel oil pipeline shower nozzle, increase by one section 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, and is identical with the instrument air of factory;
(3) set up an instrument scavenging line in the outlet of parcel oil pump, purpose is when stopping, the residual parcel oil in the pipeline to be blown out, and prevents that pipeline from stopping up;
(4) the parcel oil pipeline is taked the LP steam tracing thermal-insulating.
Above-mentioned parcel oil pipeline and instrument air help the scavenging line caliber to be DN25.
The temperature of above-mentioned parcel oil pipeline remains on 65 ℃～70 ℃.
The contriver points out: without the purpose of plant compressed air, is because instrument air is handled, removed airborne moisture through certain drying process at the compression factory building with instrument air, is substantially free of water; And factory air does not have through the drying process processing, also contains the water of quite a few in its composition, and warp and parcel oil are sprayed at the outside surface of product pellet together, cause product moisture to increase, and causes quality product change and nutrient reduction.
Concrete method of use of the present invention is: when production equipment was driven, behind the baggage systems device start, product began parcel; At this moment press product extraction amount, the rotating speed size of utilizing frequency transformer to regulate the parcel oil pump is regulated the consumption size of parcel oil.After the pump transhipment is normal, open the instrument air pipeline valve, open certain aperture earlier, progressively end then; Observe the parcel oil flowmeter and show whether size has fluctuation, more then reduce valve opening like fluctuation; Observe product parcel effect simultaneously.During parking, after termination of pumping, close the imported valve of pump, open pump outlet instrument air pipeline valve, with the instrument air scavenging line more than 5 minutes, to guarantee the unimpeded of pipeline.
Use the inventive method, the product parcel is more stable, more even, and the parcel oil consumption reduces relatively, and the product appearance quality is much improved.Be applicable to the producer that produces diammonium phosphate product.
Description of drawings
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.1 is parcel oil pipe shower nozzle among the figure, and 2 are the parcel tube, and 3 are the parcel oil pump, and 4 is the instrument air pipeline, and 5 are the 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 technology to carry out the parcel of product.
The measure of practical implementation is following: the shower nozzle that will wrap up oil pipeline is through being transformed into like Fig. 2,3 netted spray net formula shower nozzle; The instrument air that one section caliber of increase is DN25 before caliber is the parcel oil pipeline shower nozzle of DN25 helps scavenging line, and the pressure-controlling of instrument air is 0.5-0.6MPa, and is identical with the instrument air of factory; The parcel oil pipeline takes the LP steam tracing thermal-insulating at 70 ℃～80 ℃.
The technological operation step is following: when production equipment was driven, behind the device start, product began parcel, at this moment regulated according to normal parcel, according to product extraction amount, regulated the rotating speed size of parcel oil pump, regulated the consumption size of parcel oil; After pump transhipment is normal, open the instrument air pipeline valve, earlier slowly open valve opening, progressively valve is ended then; Observe the parcel oil flowmeter and show size, whether fluctuation is arranged, bigger like fluctuation, then 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, with the instrument air scavenging line more than 5 minutes, to guarantee the unimpeded of pipeline.
Explain: general product wrapping oil consumption is 1～2kg/t, can calculate total parcel oil demand according to product extraction amount, regulates the rotating speed of pump then with frequency transformer, shows according under meter, is transferred to till the total demand of joint.But actual parcel oil demand is regulated by the parcel effect of product.
Implement one year over, the parcel effect is very obvious.
Claims (3)
1. the packaging method of a diammonium phosphate product, its characteristic comprises following measure:
⑴ will wrap up the shower nozzle of oil pipeline through transforming webbed spray net formula shower nozzle;
(2) before parcel oil pipeline shower nozzle, increase by one section 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, and is identical with the instrument air of factory;
(3) set up an instrument scavenging line in the outlet of parcel oil pump, purpose is when stopping, the residual parcel oil in the pipeline to be blown out, and prevents that pipeline from stopping up;
(4) the parcel oil pipeline is taked the LP steam tracing thermal-insulating.
2. the method for claim 1 is characterized in that said parcel oil pipeline and instrument air help the scavenging line caliber to be DN25.
3. the method for claim 1 is characterized in that the temperature of said 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 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102503674A true CN102503674A (en) | 2012-06-20 |
| CN102503674B 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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|---|---|
| CN102503674B (en) | 2014-05-07 |
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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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