CN213475809U - Ammonium-free potassium nitrate calcium fertilizer production system - Google Patents
Ammonium-free potassium nitrate calcium fertilizer production system Download PDFInfo
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- CN213475809U CN213475809U CN202022273774.5U CN202022273774U CN213475809U CN 213475809 U CN213475809 U CN 213475809U CN 202022273774 U CN202022273774 U CN 202022273774U CN 213475809 U CN213475809 U CN 213475809U
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Abstract
The utility model discloses a no ammonium nitrate potassium calcium fertilizer production system, including calcium nitrate reaction tower, neutralizer, pressure filter, potassium nitrate batcher, evaporimeter, the jar of keeping in, high-pressure pump and granulation tower, calcium nitrate reaction tower links to each other with neutralizer, and the export of neutralizer links to each other with the entry of pressure filter, and the liquid outlet of pressure filter links to each other with the entry of potassium nitrate batcher, and the export of potassium nitrate batcher links to each other with the entry of evaporimeter, and the export of evaporimeter links to each other with the jar of keeping in, and the jar of keeping in links to each other with the granulation tower through high-pressure pump, and the liquid outlet of high-pressure pump links to each other with the granulation shower nozzle in the granulation tower. The performance of the potassium calcium nitrate fertilizer produced by the utility model is greatly superior to that of calcium ammonium nitrate, and the potassium calcium nitrate fertilizer is a substitute product of the calcium ammonium nitrate; and the potassium calcium nitrate is granulated by a granulation tower, the production flow is short, the production process almost has no dust, the granules are uniform, the surface is smooth and clean, the flow is good, the moisture absorption is avoided, the storage is easy, and all the defects in the production and storage processes of the calcium ammonium nitrate are overcome.
Description
Technical Field
The utility model relates to a compound fertilizer production technical field, more particularly, the utility model relates to a no ammonium potassium nitrate calcium fertilizer production system.
Background
The common compound fertilizer in the market is calcium ammonium nitrate, the calcium ammonium nitrate is white round granules, is 100 percent soluble in water, is a novel high-efficiency compound fertilizer containing nitrogen and quick-acting calcium, has the characteristics of quick fertilizer effect and quick nitrogen supplement, wherein the calcium is added, the nutrient is more comprehensive than the ammonium nitrate, and the plant can directly absorb the calcium ammonium nitrate; the product belongs to neutral fertilizer, has small physiological acidity, and has effect of improving acid soil. After the fertilizer is applied to soil, the pH value is low, the soil is not hardened, and the soil can be loosened. Meanwhile, the concentration of active aluminum can be reduced, the fixation of active phosphorus is reduced, and the provided water-soluble calcium can improve the resistance of plants to diseases. Can promote the activity of beneficial microorganisms in soil. When the fertilizer is used for planting economic crops, flowers, fruits, vegetables and other crops, the flowering phase can be prolonged, the normal growth of roots, stems and leaves can be promoted, the bright color of the fruits can be ensured, and the sugar content of the fruits can be increased.
Calcium ammonium nitrate (molecular formula 5cano3.nh4no3.10h2)) is prepared by mixing nitric acid and limestone powder in proportion and reacting, and is matched with ammonium nitrate to evaporate and cool at high temperature, and the production process has certain danger. Ammonium nitrate is a national strict material, and has complex handling charge and difficult audit. Finding a device which is free of ammonium and convenient for producing fertilizers with the same effect is significant.
Tests show that 7-12% of potassium nitrate is used to replace ammonium nitrate, and can be quickly hardened at 156 deg.C to produce potassium calcium nitrate, so that it not only has high strength, but also is a potassium-calcium-nitrogen ternary compound fertilizer, and its fertilizer efficiency is far greater than that of binary fertilizer.
The molecular formula of potassium calcium nitrate is 9Ca (NO)3)2.(1-2)KNO3.16H2And O. The molecular formula of potassium calcium nitrate is similar to that of calcium ammonium nitrate through the test, but the potassium calcium nitrate is nitrate nitrogen which is easy to be directly absorbed by plants, and the ammonium nitrogen of the ammonium nitrate in the calcium ammonium nitrate needs to be biologically converted into the nitrate nitrogen to be absorbed by the plants, so that the environmental pollution and fertilizer efficiency is reduced.
Therefore, there is a need for a production system that produces fertilizers that can replace calcium ammonium nitrate.
SUMMERY OF THE UTILITY MODEL
In order to solve the problems of difficult audit of ammonium nitrate and the like in the production process of the existing calcium ammonium nitrate fertilizer, the utility model creatively provides a production system of potassium calcium nitrate fertilizer without ammonium nitrate, the production process of producing the potassium calcium nitrate fertilizer by granulation is short, the production process almost has no dust, the particles of the potassium calcium nitrate fertilizer are uniform, the surface is smooth and clean, the flow is good, no moisture is absorbed, the storage is easy, and all the defects in the production and storage processes of the calcium ammonium nitrate are overcome; moreover, the fertilizer efficiency performance of the potassium-calcium nitrate fertilizer is greatly superior to that of calcium ammonium nitrate, the production and the manufacture are easy, and the fertilizer is a substitute product of the calcium ammonium nitrate and has wide development prospect.
For realizing foretell technical purpose, the utility model discloses a no ammonium nitrate calcium fertilizer production system, including calcium nitrate reaction tower, neutralizer, pressure filter, potassium nitrate batcher, evaporimeter, the jar of keeping in, high-pressure pump and prilling tower, the calcium nitrate reaction tower with the neutralizer links to each other, the export of neutralizer with the entry of pressure filter links to each other, the liquid outlet of pressure filter with the entry of potassium nitrate batcher links to each other, the export of potassium nitrate batcher with the entry of evaporimeter links to each other, the export of evaporimeter with the jar of keeping in links to each other, the jar of keeping in passes through the high-pressure pump with the prilling tower links to each other, the liquid outlet of high-pressure pump with prilling sprayer in the prilling tower links to each other.
Furthermore, a heating device and a stirring device are arranged in the potassium nitrate batcher.
Further, heating device is steam heating pipe, steam heating pipe winding is on the inner wall of potassium nitrate batcher.
Further, the stirring device is provided with an upper layer of stirring blades and a lower layer of stirring blades.
Further, the ammonium-free potassium nitrate calcium fertilizer production system further comprises a cooling fan for cooling the granulation tower.
Furthermore, the cooling fan is a draught fan, and the draught fan is connected with the granulation tower through an induced draft pipe.
Further, a discharge hole of the granulation tower is connected with an air-cooled fluidized bed.
Furthermore, a screening machine is arranged between the granulation tower and the air-cooled fluidized bed, a feed inlet of the screening machine is connected with a discharge port of the granulation tower, a screen underflow discharge port of the screening machine is connected with the air-cooled fluidized bed, and a screen overflow discharge port of the screening machine is connected with a feed inlet of the granulation tower.
Further, the air-cooled fluidized bed is connected with a storage bin, and a packaging machine is arranged in the storage bin.
Further, the calcium nitrate reaction tower is also connected with an absorption tower for absorbing reaction tail gas.
The utility model has the advantages that:
compared with the prior art, the ammonium-free potassium nitrate calcium fertilizer production system for producing potassium nitrate calcium fertilizer by granulation has short production flow and almost no dust in the production process; the potassium calcium nitrate fertilizer has uniform particles, smooth surface, good fluidity, no moisture absorption and easy storage, and overcomes all the defects in the production and storage process of the calcium ammonium nitrate; moreover, the fertilizer efficiency performance of the potassium-calcium nitrate fertilizer is greatly superior to that of calcium ammonium nitrate, the production and the manufacture are easy, and the fertilizer is a substitute product of the calcium ammonium nitrate and has wide development prospect.
Drawings
Fig. 1 is a schematic structural diagram of a production system of ammonium-free potassium nitrate calcium fertilizer in an embodiment of the present invention.
In the figure, the position of the upper end of the main shaft,
1. a calcium nitrate reaction tower; 2. a neutralizer; 3. a filter press; 4. a potassium nitrate batcher; 5. an evaporator; 6. a temporary storage tank; 7. a high pressure pump; 8. a prilling tower; 9. a cooling fan; 10. an air-cooled fluidized bed; 11. screening machine; 12. a storage bin; 13. a packaging machine; 14. an absorption tower.
Detailed Description
The following explains and explains the ammonium-free potassium nitrate calcium fertilizer production system provided by the invention in detail with reference to the accompanying drawings.
As shown in fig. 1, this embodiment specifically discloses a production system of ammonium-free calcium potassium nitrate fertilizer, which includes a calcium nitrate reaction tower 1, a neutralizer 2, a filter press 3, a potassium nitrate dosing unit 4, an evaporator 5, a temporary storage tank 6, a high-pressure pump 7, and a granulation tower 8. Calcium carbonate and nitric acid react in a calcium nitrate reaction tower 1 to generate calcium nitrate liquid, the calcium nitrate reaction tower 1 is connected with a neutralizer 2, the calcium nitrate liquid flows into the neutralizer 2 from the calcium nitrate reaction tower 1, and lime is used in the neutralizer 2 to neutralize the pH value of the calcium nitrate liquid to 5-6. The outlet of the neutralizer 2 is connected with the inlet of the filter press 3, and the neutralized mixed solution enters the filter press 3 for filter pressing to remove impurities. The liquid outlet of the filter press 3 is connected with the inlet of the potassium nitrate batcher 4, and qualified calcium nitrate solution is obtained after impurities are removed by the filter press 3 and enters the potassium nitrate batcher 4. A heating device and a stirring device are arranged in the potassium nitrate batcher 4, the heating device is a steam heating pipe, and the steam heating pipe is wound on the inner wall of the potassium nitrate batcher 4, so that the heating is more uniform; the stirring device is provided with an upper layer of stirring paddle and a lower layer of stirring paddle, so that the stirring is more sufficient and uniform. According to the content of calcium nitrate, a certain amount of potassium nitrate is added into the potassium nitrate batcher 4 according to the proportion, and the potassium nitrate is heated and stirred to be completely dissolved. The outlet of the potassium nitrate batcher 4 is connected with the inlet of the evaporator 5, the mixed solution completely dissolved in the potassium nitrate batcher 4 is injected into the evaporator 5 for concentration, the concentration temperature rises to 170-. The outlet of the evaporator 5 is connected with a temporary storage tank 6, the temporary storage tank 6 is connected with a granulation tower 8 through a high-pressure pump 7, the liquid outlet of the high-pressure pump 7 is connected with a granulation spray head in the granulation tower 8, the concentrated solution reaches the top of the granulation tower 8 through the high-pressure pump 7 to be sprayed, particles are formed in the granulation tower 8 through heat exchange with air at 156 ℃, and through determination, 98.5% of the formed potassium calcium nitrate particles have the particle size of 2-4mm, uniform particle size and smooth surface.
The production system of the ammonium-free potassium nitrate calcium fertilizer further comprises a cooling fan 9 used for cooling the granulation tower 8, wherein the cooling fan 9 is an induced draft fan, and the induced draft fan is connected with the granulation tower 8 through an induced draft pipe. The draught fan cools the inside of the granulation tower 8 to accelerate the forming speed of the particles. In order to enhance the cooling effect, a plurality of cooling fans 9 may be provided.
The discharge port of the granulation tower 8 is connected with an air-cooled fluidized bed 10, and the formed potassium calcium nitrate particles are cooled to 20-30 ℃ by the air-cooled fluidized bed 10 to obtain the potassium calcium nitrate meeting the requirements.
A screening machine 11 is arranged between the granulation tower 8 and the air-cooled fluidized bed 10, a feed inlet of the screening machine 11 is connected with a discharge outlet of the granulation tower 8, a screen underflow discharge outlet of the screening machine 11 is connected with the air-cooled fluidized bed 10, and a screen overflow discharge outlet of the screening machine 11 is connected with a feed inlet of the granulation tower 8. Sieving by a sieving machine 11, and sending potassium calcium nitrate particles meeting the particle size requirement into an air-cooled fluidized bed 10 for cooling; the unsatisfactory granules are fed into the granulation tower 8 for re-granulation. It was determined that 98.5% of the granules met the requirements and only 1.5% of the granules needed to be re-granulated.
The air-cooled fluidized bed 10 is connected with a storage bin 12, and a packing machine 13 is arranged in the storage bin 12. Calcium potassium nitrate particles on the air-cooled fluidized bed 10 are lifted into the storage bin 12 through the bucket elevator, and the calcium potassium nitrate particles are automatically weighed and packaged into bags by the packaging machine 13 in the storage bin 12.
The whole production process of the potassium calcium nitrate fertilizer is short in flow and almost free of dust.
The calcium nitrate reaction tower 1 is also connected with an absorption tower 14 for absorbing reaction tail gas, thereby reducing the emission of flue gas in the reaction process and reducing the environmental pollution.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship indicated based on the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In the description herein, references to the description of the terms "this embodiment," "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, and simple improvements made in the spirit of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A production system of ammonium-free potassium nitrate calcium fertilizer is characterized by comprising a calcium nitrate reaction tower (1), a neutralizer (2), a filter press (3), a potassium nitrate batcher (4), an evaporator (5), a temporary storage tank (6), a high-pressure pump (7) and a granulation tower (8), the calcium nitrate reaction tower (1) is connected with the neutralizer (2), the outlet of the neutralizer (2) is connected with the inlet of the filter press (3), the liquid outlet of the filter press (3) is connected with the inlet of the potassium nitrate batcher (4), the outlet of the potassium nitrate batcher (4) is connected with the inlet of the evaporator (5), the outlet of the evaporator (5) is connected with the temporary storage tank (6), the temporary storage tank (6) is connected with the granulation tower (8) through the high-pressure pump (7), the liquid outlet of the high-pressure pump (7) is connected with a granulating nozzle in the granulating tower (8).
2. The ammonium-free potassium nitrate calcium fertilizer production system according to claim 1, wherein a heating device and a stirring device are arranged in the potassium nitrate batcher (4).
3. The ammonium-free potassium nitrate calcium fertilizer production system according to claim 2, wherein the heating device is a steam heating pipe wound on the inner wall of the potassium nitrate batcher (4).
4. The ammonium-free potassium calcium nitrate fertilizer production system according to claim 2, wherein the stirring device is provided with an upper layer of stirring blades and a lower layer of stirring blades.
5. The system for producing potassium calcium nitrate fertilizer without ammonium salt according to claim 1, further comprising a cooling fan (9) for cooling the prilling tower (8).
6. The ammonium-free potassium nitrate calcium fertilizer production system according to claim 5, wherein the cooling fan (9) is an induced draft fan, and the induced draft fan is connected with the granulation tower (8) through an induced draft pipe.
7. The ammonium-free potassium calcium nitrate fertilizer production system according to claim 1, wherein the discharge port of the granulation tower (8) is connected with an air-cooled fluidized bed (10).
8. The ammonium-free potassium nitrate calcium fertilizer production system according to claim 7, wherein a screening machine (11) is arranged between the granulation tower (8) and the air-cooled fluidized bed (10), a feed inlet of the screening machine (11) is connected with a discharge outlet of the granulation tower (8), a screen underflow discharge outlet of the screening machine (11) is connected with the air-cooled fluidized bed (10), and a screen overflow discharge outlet of the screening machine (11) is connected with a feed inlet of the granulation tower (8).
9. The ammonium-free calcium potassium nitrate fertilizer production system according to claim 7 or 8, wherein the air-cooled fluidized bed (10) is connected with a storage bin (12), and a packing machine (13) is arranged in the storage bin (12).
10. The ammonium-free potassium nitrate calcium fertilizer production system according to claim 1, wherein the calcium nitrate reaction tower (1) is further connected with an absorption tower (14) for absorbing reaction tail gas.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022273774.5U CN213475809U (en) | 2020-10-14 | 2020-10-14 | Ammonium-free potassium nitrate calcium fertilizer production system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022273774.5U CN213475809U (en) | 2020-10-14 | 2020-10-14 | Ammonium-free potassium nitrate calcium fertilizer production system |
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| CN213475809U true CN213475809U (en) | 2021-06-18 |
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| CN202022273774.5U Active CN213475809U (en) | 2020-10-14 | 2020-10-14 | Ammonium-free potassium nitrate calcium fertilizer production system |
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