CN220779034U - Spray drying device of flash-dissolved potassium dihydrogen phosphate - Google Patents
Spray drying device of flash-dissolved potassium dihydrogen phosphate Download PDFInfo
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- CN220779034U CN220779034U CN202322591469.4U CN202322591469U CN220779034U CN 220779034 U CN220779034 U CN 220779034U CN 202322591469 U CN202322591469 U CN 202322591469U CN 220779034 U CN220779034 U CN 220779034U
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- atomizer
- spray drying
- air
- dihydrogen phosphate
- potassium dihydrogen
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- 235000019796 monopotassium phosphate Nutrition 0.000 title claims abstract description 50
- 229910000402 monopotassium phosphate Inorganic materials 0.000 title claims abstract description 47
- 238000001694 spray drying Methods 0.000 title claims abstract description 47
- PJNZPQUBCPKICU-UHFFFAOYSA-N phosphoric acid;potassium Chemical compound [K].OP(O)(O)=O PJNZPQUBCPKICU-UHFFFAOYSA-N 0.000 title claims abstract description 46
- 238000001035 drying Methods 0.000 claims abstract description 49
- 238000010438 heat treatment Methods 0.000 claims abstract description 38
- 238000011084 recovery Methods 0.000 claims description 17
- 238000000889 atomisation Methods 0.000 claims description 9
- GNSKLFRGEWLPPA-UHFFFAOYSA-M potassium dihydrogen phosphate Chemical compound [K+].OP(O)([O-])=O GNSKLFRGEWLPPA-UHFFFAOYSA-M 0.000 claims description 4
- 229940111688 monobasic potassium phosphate Drugs 0.000 claims description 3
- 239000007921 spray Substances 0.000 claims description 2
- LWIHDJKSTIGBAC-UHFFFAOYSA-K potassium phosphate Substances [K+].[K+].[K+].[O-]P([O-])([O-])=O LWIHDJKSTIGBAC-UHFFFAOYSA-K 0.000 claims 1
- 238000004090 dissolution Methods 0.000 abstract description 9
- 238000005516 engineering process Methods 0.000 abstract description 5
- 238000013461 design Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 5
- 239000002737 fuel gas Substances 0.000 description 4
- 239000003595 mist Substances 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- 239000003245 coal Substances 0.000 description 3
- 238000002485 combustion reaction Methods 0.000 description 3
- 238000005485 electric heating Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000003912 environmental pollution Methods 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 239000000779 smoke Substances 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 239000011344 liquid material Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
Abstract
The utility model relates to a drying device design technology and discloses a flash-dissolved potassium dihydrogen phosphate spray drying device, which comprises a spray drying tower, wherein the spray drying tower comprises a drying tower body, a first atomizer and a second atomizer are arranged in a cavity of the drying tower body, the second atomizer is positioned below the first atomizer, and the atomizing angle of the second atomizer is smaller than that of the first atomizer; the drying tower body is provided with an air outlet, a discharge hole and a plurality of air inlets, and the air inlets are respectively communicated with the air heating structure through air channels. The spray drying device can solve the technical problems that the existing spray drying device is low in drying efficiency, low in quality and high in cost, and the product dissolution efficiency is affected due to low bulk of the potassium dihydrogen phosphate product.
Description
Technical Field
The utility model relates to a design technology of a drying device, in particular to a flash-dissolved type potassium dihydrogen phosphate spray drying device.
Background
The spray drying method is a novel drying technology for converting liquid materials into powdery/granular materials, can dry a large amount of materials in a short time, can improve the production efficiency, has lower energy consumption and higher drying efficiency, and can be widely applied to industries such as pharmacy, food, chemical industry and the like. And with the improvement of life quality and development of science and technology, the spray drying method has wider application range than the traditional drying method.
The spray drying technology mainly ensures the product requirements of the dried materials such as quality, moisture and the like by controlling the temperature, humidity, hot air flow rate, material flow rate, nozzle parameters and the like in a drying tower, and researches show that the prior spray drying device has the following problems in the process of drying the potassium dihydrogen phosphate solution:
1. The potassium dihydrogen phosphate mist drops are slowly contacted with hot air in a drying tower, and have small contact area, so that on one hand, the drying efficiency is low, and on the other hand, the fluffiness of a dried potassium dihydrogen phosphate product is low, and the potassium dihydrogen phosphate product is easy to gather so as to influence the dissolution efficiency when the potassium dihydrogen phosphate product is used;
2. The hot air used in the spray drying process is usually formed by heating air by electric heating or coal combustion, and the hot air is difficult to provide for stabilizing the temperature and the flow rate, so that the drying efficiency and the drying quality are affected;
3. The hot air discharged from the spray drying tower after drying is directly discharged into the atmosphere, so that energy is wasted, and the surrounding atmosphere environment is influenced.
Therefore, the existing drying equipment needs to be improved, so that the drying efficiency and the drying quality are improved, meanwhile, the fluffiness of the potassium dihydrogen phosphate product can be improved, the waste heat of the spray drying tower can be fully utilized, and the drying cost is reduced.
Disclosure of utility model
The utility model designs a spray drying device for flash-dissolved potassium dihydrogen phosphate, which aims to solve the technical problems that when a potassium dihydrogen phosphate solution is dried and prepared by using the existing spray drying method, the drying efficiency is low, the quality is low, the cost is high, the bulking degree of a potassium dihydrogen phosphate product is low, the product dissolution efficiency is influenced and the like.
The technical scheme for realizing the aim of the utility model is as follows: the spray drying device of flash-dissolved potassium dihydrogen phosphate comprises a spray drying tower, wherein the spray drying tower comprises a drying tower body, a first atomizer and a second atomizer are arranged in a cavity of the drying tower body, the second atomizer is positioned below the first atomizer, and the atomizing angle of the second atomizer is smaller than that of the first atomizer;
The drying tower body is provided with an air outlet, a discharge hole and a plurality of air inlets, and the air inlets are respectively communicated with the air heating structure through air channels.
Further, the atomization angle of the first atomizer is 60-80 degrees, and the atomization angle of the second atomizer is 50-60 degrees.
Further, the first atomizer is a centrifugal atomizer, and the second atomizer comprises a spray pipe and an atomizing nozzle.
In an improved embodiment, the spray drying device further comprises a heat recovery device, one end of the heat recovery device is communicated with the air outlet through a pipeline, the other end of the heat recovery device is communicated with the air heating structure, and a filter is further arranged between the heat recovery device and the air heating structure.
Further, the air heating structure comprises a burner, an air heating chamber is arranged in the burner, an air inlet end of the air heating chamber is communicated with heat recovery equipment or outside air, and an air outlet end of the air heating chamber is communicated with the air inlet through an air channel.
In a modified embodiment, the spray drying apparatus further comprises a vibrator provided on an outer wall of the drying tower body.
In an improved embodiment, the first atomizer and the second atomizer are respectively communicated with a potassium dihydrogen phosphate solution storage tank through pipelines, the pipelines are provided with an electromagnetic flow valve and a filter, and the electromagnetic flow valve is connected with a controller.
Compared with the prior art, the utility model has the beneficial effects that:
1. The setting of first atomizer and second atomizer on the one hand can make full use of the heating air in the input drying tower body, on the other hand can improve the drying efficiency of potassium dihydrogen phosphate solution.
2. The first atomizer and the second atomizer are different types of atomizers, the diameter of fog drops, the centrifugal rotating speed and the heating air flow can be adjusted according to the requirements of particle size, fluffiness, moisture and the like of flash-dissolution type potassium dihydrogen phosphate products, and the quality and the dissolution efficiency of the flash-dissolution type potassium dihydrogen phosphate products are ensured.
3. The first atomizer and the second atomizer are communicated with the potassium dihydrogen phosphate solution storage tank through different pipelines, and meanwhile, the electromagnetic flow valves are arranged on the respective pipelines, so that any one atomizer can be flexibly selected or two atomizers are adopted to jointly dry flash-type potassium dihydrogen phosphate.
4. Through the improvement of the air heating structure, the air is heated by adopting fuel gas, so that stable supply of heating air in the spray drying tower can be ensured, and the problems of cost increase caused by electric heating or environmental pollution caused by smoke emission caused by coal heating can be avoided.
5. Through the use of heat recovery equipment, the hot air discharged from the spray drying tower is recovered and then sent back to the air heating structure for recycling, so that the consumption of fuel gas can be greatly reduced, and the cost of flash-dissolved potassium dihydrogen phosphate products is reduced.
Drawings
In order to more clearly illustrate the technical solution of the embodiments of the present utility model, the drawings that are needed in the description of the embodiments will be briefly described.
FIG. 1 is a schematic diagram of a spray drying apparatus for flash-soluble monobasic potassium phosphate in an embodiment;
wherein, 100, spray drying tower; 200. an air heating structure; 300. a heat recovery device; 400. a filter; 500. a potassium dihydrogen phosphate solution storage tank; 1. a drying tower body; 2. a first atomizer; 3. a second atomizer; 4. an air outlet; 5. a discharge port; 6. an air inlet.
Detailed Description
The utility model is further described below in conjunction with specific embodiments, and advantages and features of the utility model will be apparent from the description. These examples are merely exemplary and do not limit the scope of the utility model in any way. It will be understood by those skilled in the art that various changes and substitutions of details and forms of the technical solution of the present utility model may be made without departing from the spirit and scope of the present utility model, but these changes and substitutions fall within the scope of the present utility model.
This embodiment provides a spray drying apparatus for flash-soluble potassium dihydrogen phosphate, as shown in fig. 1, which includes a spray drying tower 100.
The spray drying tower 100 includes a drying tower body 1, a first atomizer 2 and a second atomizer 3 are disposed in a cavity of the drying tower body 1, the second atomizer 3 is located below the first atomizer 2, and an atomization angle of the second atomizer 3 is smaller than an atomization angle of the first atomizer 2, as shown in fig. 1. The drying tower body 1 is provided with an air outlet 4, a discharge opening 5 and a plurality of air inlets 6, and the air inlets 6 are respectively communicated with the air heating structure 200 through air channels.
When the spray drying device is used for drying and preparing flash-dissolved potassium dihydrogen phosphate, the potassium dihydrogen phosphate solution is sprayed into the drying tower body 1 by adopting the first atomizer 2 and/or the second atomizer 3, meanwhile, heating air is input into the drying tower body 1 through the air heating structure 200 and the plurality of air inlets 6, and atomized potassium dihydrogen phosphate mist drops are dried, so that flash-dissolved potassium dihydrogen phosphate with high fluffiness is prepared from the discharge port 5, and meanwhile, the residual hot air of the drying tower body 1 is discharged from the air outlet 4.
In an alternative embodiment, in order to avoid the mutual influence of the potassium dihydrogen phosphate mist droplets sprayed from the first atomizer 2 and the second atomizer 3, the atomization angles of the first atomizer 2 and the second atomizer 3 may be designed, specifically, the atomization angle of the first atomizer 2 may be 60 to 80 ° and the atomization angle of the second atomizer 3 may be 50 to 60 °. Meanwhile, the distance between the two atomizers and the height of the drying tower body 1 can be designed, so that the drying effect of the potassium dihydrogen phosphate mist drops is ensured.
In an alternative embodiment, the first atomizer 2 and the second atomizer 3 may be of the same type or of different types, and in order to ensure the drying efficiency of the potassium dihydrogen phosphate solution, two different atomizers are preferably used in this embodiment, for example: the nozzle pipe and the atomizing nozzle are used as a second atomizer 3, and the centrifugal atomizer is used as a first atomizer 2.
In an alternative embodiment, referring to fig. 1, the spray drying apparatus further includes a heat recovery device 300, one end of the heat recovery device 300 is communicated with the air outlet 4 through a pipe, the other end is communicated with the air heating structure 200, and a filter 400 is further provided between the heat recovery device 300 and the air heating structure 200, and the filter 400 can filter the discharged hot air, and filter out the potassium dihydrogen phosphate powder discharged with the hot air.
In an alternative embodiment, not shown in the drawings, the air heating structure 200 comprises a burner in which an air heating chamber is provided, and the air inlet end of the air heating chamber communicates with the heat recovery device 300 or the outside air, and the air outlet end communicates with the air inlet 6 via an air passage. By burning the gas in the combustion chamber, the air in the air heating chamber in the combustion chamber can be heated to form hot air to be output to the spray drying tower 100.
In an alternative embodiment not shown in the drawings, in order to ensure that the potassium dihydrogen phosphate particles attached to the inner wall of the drying tower body 1 can smoothly flow down and collect at the position of the discharge outlet 5 at the bottom of the drying tower body 1, a vibrator is arranged on the outer wall of the drying tower body 1, and the vibrator is used for knocking the outer wall of the drying tower body 1, so that the potassium dihydrogen phosphate particles attached to the inner wall of the drying tower body 1 can smoothly flow down.
In an alternative embodiment, not shown in the drawings, the first atomizer 2 and the second atomizer 3 are respectively in communication with the potassium dihydrogen phosphate solution tank 500 via pipes, and the pipes are provided with an electromagnetic flow valve and a filter, and the electromagnetic flow valve is connected to a controller.
Compared with the existing spray drying equipment, the spray drying device disclosed by the embodiment has at least the following advantages:
1. The setting of first atomizer and second atomizer on the one hand can make full use of the heating air in the input drying tower body, on the other hand can improve the drying efficiency of potassium dihydrogen phosphate solution.
2. The first atomizer and the second atomizer are different types of atomizers, the diameter of fog drops, the centrifugal rotating speed and the heating air flow can be adjusted according to the requirements of particle size, fluffiness, moisture and the like of flash-dissolution type potassium dihydrogen phosphate products, and the quality and the dissolution efficiency of the flash-dissolution type potassium dihydrogen phosphate products are ensured.
3. The first atomizer and the second atomizer are communicated with the potassium dihydrogen phosphate solution storage tank through different pipelines, and meanwhile, the electromagnetic flow valves are arranged on the respective pipelines, so that any one atomizer can be flexibly selected or two atomizers are adopted to simultaneously use dry flash-type potassium dihydrogen phosphate.
4. Through the improvement of the air heating structure, the air is heated by adopting fuel gas, so that stable supply of heating air in the spray drying tower can be ensured, and the problems of cost increase caused by electric heating or environmental pollution caused by smoke emission caused by coal heating can be avoided.
5. Through the use of heat recovery equipment, the hot air discharged from the spray drying tower is recovered and then sent back to the air heating structure for recycling, so that the consumption of fuel gas can be greatly reduced, and the cost of flash-dissolved potassium dihydrogen phosphate products is reduced.
The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the utility model.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.
Claims (7)
1. A spray drying apparatus for flash-soluble monopotassium phosphate, comprising a spray drying tower (100), characterized in that: the spray drying tower (100) comprises a drying tower body (1), a first atomizer (2) and a second atomizer (3) are arranged in a cavity of the drying tower body (1), the second atomizer (3) is positioned below the first atomizer (2), and the atomizing angle of the second atomizer (3) is smaller than that of the first atomizer (2);
An air outlet (4), a discharge opening (5) and a plurality of air inlets (6) are formed in the drying tower body (1), and the air inlets (6) are respectively communicated with the air heating structure (200) through air channels.
2. The flash-soluble potassium dihydrogen phosphate spray drying apparatus as defined in claim 1, wherein: the atomization angle of the first atomizer (2) is 60-80 degrees, and the atomization angle of the second atomizer (3) is 50-60 degrees.
3. The spray drying device of flash-soluble monobasic potassium phosphate according to claim 1 or 2, characterized in that: the first atomizer (2) is a centrifugal atomizer, and the second atomizer (3) comprises a spray pipe and an atomizing nozzle.
4. The flash-soluble potassium dihydrogen phosphate spray drying apparatus as defined in claim 1, wherein: the spray drying device further comprises heat recovery equipment (300), one end of the heat recovery equipment (300) is communicated with the air outlet (4) through a pipeline, the other end of the heat recovery equipment is communicated with the air heating structure (200), and a filter (400) is further arranged between the heat recovery equipment (300) and the air heating structure (200).
5. The spray drying apparatus for flash-soluble monobasic potassium phosphate of claim 4 wherein: the air heating structure (200) comprises a burner, an air heating chamber is arranged in the burner, the air inlet end of the air heating chamber is communicated with the heat recovery device (300) or the outside air, and the air outlet end of the air heating chamber is communicated with the air inlet (6) through an air channel.
6. The flash-soluble potassium dihydrogen phosphate spray drying apparatus as defined in claim 1, wherein: the spray drying device also comprises a vibrator arranged on the outer wall of the drying tower body (1).
7. The flash-soluble potassium dihydrogen phosphate spray drying apparatus as defined in claim 1, wherein: the first atomizer (2) and the second atomizer (3) are respectively communicated with a potassium dihydrogen phosphate solution storage tank (500) through pipelines, the pipelines are provided with electromagnetic flow valves and filters, and the electromagnetic flow valves are connected with a controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322591469.4U CN220779034U (en) | 2023-09-22 | 2023-09-22 | Spray drying device of flash-dissolved potassium dihydrogen phosphate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322591469.4U CN220779034U (en) | 2023-09-22 | 2023-09-22 | Spray drying device of flash-dissolved potassium dihydrogen phosphate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220779034U true CN220779034U (en) | 2024-04-16 |
Family
ID=90630372
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322591469.4U Active CN220779034U (en) | 2023-09-22 | 2023-09-22 | Spray drying device of flash-dissolved potassium dihydrogen phosphate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220779034U (en) |
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2023
- 2023-09-22 CN CN202322591469.4U patent/CN220779034U/en active Active
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