CN102001873A - Method for producing granular compound fertilizerthrough granulation of nitramine tower - Google Patents
Method for producing granular compound fertilizerthrough granulation of nitramine tower Download PDFInfo
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- CN102001873A CN102001873A CN 200910213839 CN200910213839A CN102001873A CN 102001873 A CN102001873 A CN 102001873A CN 200910213839 CN200910213839 CN 200910213839 CN 200910213839 A CN200910213839 A CN 200910213839A CN 102001873 A CN102001873 A CN 102001873A
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Abstract
The invention discloses a method for producing a granular compound fertilizer through granulation of a nitramine tower, which comprises the following steps of: proportionally heating and mixing nitramine meltwater and fertilizers which are used for producing the compound fertilizer in a mixer to prepare compound fertilizer mixed slurry; spraying and granulating the mixed slurry through a spray head of a granulation machine; and cooling, sieving, metering and packing the granules. The method belongs to a novel process for manufacturing the compound fertilizer. Compared with the prior art, the method can be directly used for producing the granular compound fertilizer at the nitramine tower and simplifies the production process of the compound fertilizer.
Description
Technical field
The present invention relates to composite fertilizer, particularly relate to the method that granular composite fertilizer is produced in a kind of ammonium nitrate tower granulation.
Background technology
In agriculture production, be extensive use of various fertilizer, mainly be chemical fertilizer of simple substance and the polyelement composite fertilizer that contains nitrogen, phosphorus, potassium and other nutritive element, the production method of wherein traditional compound manure mainly contains granulating method, slurry process, extrusion process and blending method etc.They are that urea, ammonium nitrate, phosphorus ammonium, coarse whiting, Repone K, vitriolate of tartar etc. are carried out the compound manure that secondary processing is made various nutrient elements such as containing nitrogen, phosphorus, potassium.
Domestic widely used high tower compound fertilizer production technology is by the innovation of fragrant plant field, Shenzhen ecological engineering limited-liability company at present, the cardinal principle of its patent of invention " high tower prilling is produced the method and the equipment thereof of granular composite fertilizer " (patent No. ZL03139601.1) is, melting charge slurry is by the form ejection of the special prilling spry of cat head with thin jet fluid column, the fluid column of ejection fragments into drop when contacting with air, drop descends in tower and conducts heat with air, and mass transfer is solidified into particle and falls at the bottom of the tower.The high tower prilling major advantage is that the melting charge slurry moisture content is low, and the drying-free process has been saved energy consumption; Particle surface is smooth, mellow and full, prevented from caking, has the higher market competitiveness; Good operational environment, three-waste free discharge belongs to process for cleanly preparing; Can directly utilize production system urea or ammonium nitrate melt, simplify the technological process of production.But also there is following defective in it: the regulation range of product particle size is narrow, and compound fertilizer production with tower granulation project engineering investment cost is big.
In the ammonium nitrate chemical fertilizers production; the high tower prilling technology is mainly adopted in the granulation of ammonium nitrate chemical fertilizer; its cardinal principle is that the ammonium nitrate melt liquid is by the form ejection of the special tablets press shower nozzle of cat head with thin jet fluid column; the fluid column of ejection fragments into drop when contacting with air; drop descends in tower and carries out being finished product at the bottom of the heat exchange after fixing becomes particle to fall into tower after cooling, screening, packing with air.
In the prior art, the ammonium nitrate chemical fertilizer is used the high tower prilling technology and is mainly produced chemical fertilizer of simple substance urea.Directly using ammonium nitrate tower granulation production granular composite fertilizer does not then appear in the newspapers.
Summary of the invention
The present invention aims to provide the method that granular composite fertilizer is produced in a kind of ammonium nitrate tower granulation that can produce the compound manure that contains the required nitrogen of farm crop, phosphorus, three kinds of nutritive elements of potassium, so that can further simplify production technique, reduce the energy consumption of production process, and realize three-waste free discharge; The present invention also aims to provide the equipment of this method of realization.
Principle of the present invention is; after ammonium nitrate melt liquid and chemical fertilizer mixed according to a certain percentage; under certain temperature condition, enter in the prilling tower by the sprinkling of cat head rotary pelleting machine shower nozzle; the granulation material from cat head decline process with the gas-flow resistance effect of rising under carry out heat exchange and drop to tower slowly at the bottom of, after the cooling screening, obtain the granular compound fertilizer material.
Technical scheme of the present invention is as follows:
The method of granular composite fertilizer is produced in a kind of ammonium nitrate tower granulation, and it may further comprise the steps:
A) the employed ammonium nitrate fused solution of production composite fertilizer, chemical fertilizer are heated mixing in proportion in mixing tank, preparation composite fertilizer mixed slurry;
B) described mixed slurry is sprayed granulation by the tablets press shower nozzle;
C) with particle cooling, screening, metering packing.
The method of granular composite fertilizer is produced in a kind of ammonium nitrate tower granulation, and the mass ratio of described ammonium nitrate fused solution and chemical fertilizer is: ammonium nitrate fused solution 75～98%, chemical fertilizer 2～25%; The preferred mass ratio is an ammonium nitrate fused solution 85～95%, chemical fertilizer 5～15%.
The method of granular composite fertilizer is produced in a kind of ammonium nitrate tower granulation, and described heating mixing temperature is 135～180 ℃.
The method of granular composite fertilizer is produced in a kind of ammonium nitrate tower granulation, and described chemical fertilizer is one or more the mixture in phosphorus ammonium, coarse whiting, fused(calcium magnesium)phosphate, Repone K, the vitriolate of tartar.
The method of granular composite fertilizer is produced in a kind of ammonium nitrate tower granulation, in the preparation mixed slurry, add an amount of moderate-element compound and trace compound, in obtaining containing, the granular compound fertilizer material of trace element, in, trace compound is selected from one or more the mixture in calcium cpd, sulphur compound, magnesium compound, manganic compound, molybdenum compound, zn cpds, iron cpd, copper compound, the boron compound.
The method of granular composite fertilizer is produced in a kind of ammonium nitrate tower granulation, adds one or more mixtures in an amount of fertilizer synergist, the fertilizer slow-release formulation in the preparation slip.
The method of granular composite fertilizer is produced in a kind of ammonium nitrate tower granulation, adds an amount of dyestuff and make color grains composite fertilizer in the preparation mixed slurry.
The method of granular composite fertilizer is produced in a kind of ammonium nitrate tower granulation; described mixing tank is a kind of reactive tank kind equipment; its overcoat has the insulation heating jacket; there is stirring rake the centre; stirring rake end points linear velocity 100～500m/ branch; tablets press shower nozzle equipment aperture Ф 1.0～1.6mm, preferred Ф 1.2～1.4mm.
The invention has the advantages that:
A, can be directly produce granular composite fertilizer, simplify compound fertilizer production technology at the ammonium nitrate tower;
B, drying-free process have been saved energy consumption;
The compound fertilizer granule of c, production is mellow and full, smooth surface, prevented from caking, has the higher market competitiveness;
D, good operational environment, three-waste free discharge belongs to process for cleanly preparing;
E, the simple less investment of processing unit.
Embodiment
In order to make purpose of the present invention, technical scheme and advantage clearer, the present invention describes with following specific embodiment, but the present invention is limited to these examples absolutely not.The following stated only is the present invention embodiment preferably, only is used to explain the present invention, can not therefore be interpreted as the restriction to claim of the present invention.
Embodiment 1
Get ammonium nitrate fused solution 8.9kg, monoammonium phosphate (nitrogen 10%, phosphorus 50%) 1.0kg, magnesium sulfate monohydrate 0.09kg, zinc sulfate 0.01kg join in the mixing tank, at mixing tank stirring rake linear velocity 250m/ branch, insulation is heated under 152 ℃ of conditions makes mixed slurry, mixed slurry is by the cat head shower nozzle, under shower nozzle aperture Ф 1.2mm condition the mixed slurry injection is entered the prilling tower granulation, the granulation material obtains the qualified particle of 1-4mm by screening.Get back to mixing tank as returning charge together after fine powder material after the screening and the macrobead fragmentation.This product is a white particle nitro phosphor complex product, and it contains N 31.26%, P
2O
55.0%, contain magnesium, sulphur moderate-element and zinc microelement simultaneously.
Embodiment 2
Get ammonium nitrate fused solution 9.2kg, Repone K 0.7kg, synergistic agent (poly aspartic acid) 0.04kg, borax 0.055kg, acid blue 0.005kg join in the mixing tank, at mixing tank stirring rake linear velocity 200m/ branch, insulation is heated under 160 ℃ of conditions makes mixed slurry, mixed slurry is by the cat head shower nozzle, under shower nozzle aperture Ф 1.3mm condition the mixed slurry injection is entered the prilling tower granulation, the granulation material obtains the qualified particle of 1-4mm by screening.Get back to mixing tank as returning charge together after fine powder material after the screening and the macrobead fragmentation.This product is a blue particle composite N-K fertilizer product, and it contains N 31.28%, K
2O 4.20%, contains synergistic agent and boron trace element simultaneously.
Embodiment 3
Get ammonium nitrate fused solution 8.77kg, double superhosphate 0.4kg, vitriolate of tartar 0.8kg, sustained release dosage 0.03kg, join in the mixing tank, at mixing tank stirring rake linear velocity 300m/ branch, insulation is heated under 132 ℃ of conditions makes mixed slurry, mixed slurry is by the cat head shower nozzle, under shower nozzle aperture Ф 1.4mm condition the mixed slurry injection is entered the prilling tower granulation, the granulation material obtains the qualified particle of 1-4mm by screening.Get back to mixing tank as returning charge together after fine powder material after the screening and the macrobead fragmentation.This product is a white particle NpK complex fertilizer product, and it contains N 29.82%, P
2O
51.84%, K
2O 4.0%, contains moderate-element sulphur, calcium and sustained release dosage simultaneously.
Embodiment 4
Get ammonium nitrate fused solution 7.8kg, fused(calcium magnesium)phosphate (phosphorus 18.5%) 2.2kg joins in the mixing tank, at mixing tank stirring rake linear velocity 350m/ branch, insulation is heated under 145 ℃ of conditions makes mixed slurry, mixed slurry is by the cat head shower nozzle, under shower nozzle aperture Ф 1.4mm condition the mixed slurry injection is entered the prilling tower granulation, the granulation material obtains the qualified particle of 1-4mm by screening.Get back to mixing tank as returning charge together after fine powder material after the screening and the macrobead fragmentation.This product is a canescence particle nitro phosphor complex product, and it contains N26.52%, P
2O
54.07%, contain magnesium, calcium moderate-element simultaneously.
Embodiment 5
Getting ammonium nitrate fused solution 9.4kg, vitriolate of tartar 0.6kg joins in the mixing tank, at mixing tank stirring rake linear velocity 150m/ branch, insulation is heated under 135 ℃ of conditions makes mixed slurry, mixed slurry is by the cat head shower nozzle, under shower nozzle aperture Ф 1.1mm condition the mixed slurry injection is entered the prilling tower granulation, the granulation material obtains the qualified particle of 1-4mm by screening.Get back to mixing tank as returning charge together after fine powder material after the screening and the macrobead fragmentation.This product is a white particle composite N-K fertilizer product, and it contains N 31.96%, K
2O3.0% contains the sulphur moderate-element simultaneously.
Claims (10)
1. the method for granular composite fertilizer is produced in an ammonium nitrate tower granulation, and it may further comprise the steps:
A) the employed ammonium nitrate fused solution of production composite fertilizer, chemical fertilizer are heated mixing in proportion in mixing tank, preparation composite fertilizer mixed slurry;
B) described mixed slurry is sprayed granulation by the tablets press shower nozzle;
C) with particle cooling, screening, metering packing.
2. produce the method for granular composite fertilizer according to the granulation of the described ammonium nitrate tower of claim 1, it is characterized in that the mass ratio of described ammonium nitrate fused solution and chemical fertilizer is: ammonium nitrate fused solution 75～98%, chemical fertilizer 2～25%.
3. produce the method for granular composite fertilizer according to the granulation of the described ammonium nitrate tower of claim 1, it is characterized in that the preferred mass ratio of described ammonium nitrate fused solution and chemical fertilizer is: ammonium nitrate fused solution 85～95%, chemical fertilizer 5～15%.
4. produce the method for granular composite fertilizer according to the granulation of the described ammonium nitrate tower of claim 1, it is characterized in that described heating mixing temperature is 135～180 ℃.
5. produce the method for granular composite fertilizer according to the granulation of the described ammonium nitrate tower of claim 1, it is characterized in that, described chemical fertilizer is one or more the mixture in phosphorus ammonium, coarse whiting, fused(calcium magnesium)phosphate, Repone K, the vitriolate of tartar.
6. produce the method for granular composite fertilizer according to the granulation of the described ammonium nitrate tower of claim 1, it is characterized in that, in the preparation mixed slurry, add an amount of moderate-element compound and trace compound, in obtaining containing, the granular compound fertilizer material of trace element, in, trace compound is selected from one or more the mixture in calcium cpd, sulphur compound, magnesium compound, manganic compound, molybdenum compound, zn cpds, iron cpd, copper compound, the boron compound.
7. produce the method for granular composite fertilizer according to the granulation of the described ammonium nitrate tower of claim 1, it is characterized in that, in the preparation slip, add one or more the mixture in an amount of fertilizer synergist, the fertilizer slow-release formulation.
8. produce the method for granular composite fertilizer according to the granulation of the described ammonium nitrate tower of claim 1, it is characterized in that, in the preparation mixed slurry, add an amount of dyestuff and make color grains composite fertilizer.
9. produce the method for granular composite fertilizer according to the granulation of the described ammonium nitrate tower of claim 1; it is characterized in that; described mixing tank is a kind of reactive tank kind equipment; its overcoat has the insulation heating jacket; there is stirring rake the centre; stirring rake end points linear velocity 100～500m/ branch, tablets press shower nozzle equipment aperture Φ 1.0～1.6mm.
10. produce the method for granular composite fertilizer according to the granulation of the described ammonium nitrate tower of claim 9, it is characterized in that the described tablets press shower nozzle equipment preferred Φ 1.2～1.4mm in aperture.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 200910213839 CN102001873A (en) | 2009-12-15 | 2009-12-15 | Method for producing granular compound fertilizerthrough granulation of nitramine tower |
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| CN 200910213839 CN102001873A (en) | 2009-12-15 | 2009-12-15 | Method for producing granular compound fertilizerthrough granulation of nitramine tower |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102584408A (en) * | 2012-03-23 | 2012-07-18 | 河北冀衡赛瑞化工有限公司 | Method for producing nitro-sulfur-based composite fertilizer by full-liquid phase high tower granulation |
| CN103664272A (en) * | 2012-08-30 | 2014-03-26 | 贵港市芭田生态有限公司 | Control method of high-tower nitro-sulfur-based composite fertilizer recombination process |
| CN110734320A (en) * | 2019-11-21 | 2020-01-31 | 贵州芭田生态工程有限公司 | Urea magnesium sulfate fertilizer and preparation method thereof |
| CN111153728A (en) * | 2018-10-22 | 2020-05-15 | 中农金瑞肥业有限公司 | Multienzyme gold organic enzyme compound fertilizer and preparation method thereof |
-
2009
- 2009-12-15 CN CN 200910213839 patent/CN102001873A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102584408A (en) * | 2012-03-23 | 2012-07-18 | 河北冀衡赛瑞化工有限公司 | Method for producing nitro-sulfur-based composite fertilizer by full-liquid phase high tower granulation |
| CN102584408B (en) * | 2012-03-23 | 2014-01-15 | 河北冀衡赛瑞化工有限公司 | Method for producing nitro-sulfur-based composite fertilizer by full-liquid phase high tower granulation |
| CN103664272A (en) * | 2012-08-30 | 2014-03-26 | 贵港市芭田生态有限公司 | Control method of high-tower nitro-sulfur-based composite fertilizer recombination process |
| CN103664272B (en) * | 2012-08-30 | 2016-06-01 | 贵港市芭田生态有限公司 | The control method of a kind of high tower nitrate-based compound fertilizer material recombining process again |
| CN111153728A (en) * | 2018-10-22 | 2020-05-15 | 中农金瑞肥业有限公司 | Multienzyme gold organic enzyme compound fertilizer and preparation method thereof |
| CN110734320A (en) * | 2019-11-21 | 2020-01-31 | 贵州芭田生态工程有限公司 | Urea magnesium sulfate fertilizer and preparation method thereof |
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Owner name: XUZHOU BATIAN ECOLOGICAL CO., LTD. |
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Effective date of registration: 20110706 Address after: 518105 third industrial zone, riverside, Songgang street, Shenzhen, Guangdong, Baoan District Applicant after: Batian Ecological Engineering Co., Ltd., Shenzhen Co-applicant after: Xuzhou Batian Ecology Co., Ltd. Address before: 518105 third industrial zone, riverside, Songgang street, Shenzhen, Guangdong, Baoan District Applicant before: Batian Ecological Engineering Co., Ltd., Shenzhen |
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Application publication date: 20110406 |