CN219722802U - Spray freezing granulation drying equipment - Google Patents
Spray freezing granulation drying equipment Download PDFInfo
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- CN219722802U CN219722802U CN202321172140.8U CN202321172140U CN219722802U CN 219722802 U CN219722802 U CN 219722802U CN 202321172140 U CN202321172140 U CN 202321172140U CN 219722802 U CN219722802 U CN 219722802U
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- pipeline
- temperature control
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- 238000007710 freezing Methods 0.000 title claims abstract description 56
- 230000008014 freezing Effects 0.000 title claims abstract description 56
- 239000007921 spray Substances 0.000 title claims abstract description 51
- 238000001035 drying Methods 0.000 title claims abstract description 33
- 238000005469 granulation Methods 0.000 title claims abstract description 5
- 230000003179 granulation Effects 0.000 title claims abstract description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 87
- 239000007788 liquid Substances 0.000 claims abstract description 66
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 42
- 238000001291 vacuum drying Methods 0.000 claims abstract description 19
- 239000000463 material Substances 0.000 claims description 21
- 238000012545 processing Methods 0.000 claims description 10
- 238000009483 freeze granulation Methods 0.000 claims description 9
- 229910001873 dinitrogen Inorganic materials 0.000 claims description 3
- 238000005507 spraying Methods 0.000 claims description 3
- 238000011144 upstream manufacturing Methods 0.000 claims description 3
- 238000004891 communication Methods 0.000 claims description 2
- 239000012530 fluid Substances 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 9
- 239000002699 waste material Substances 0.000 abstract description 5
- 238000004108 freeze drying Methods 0.000 description 13
- 230000000694 effects Effects 0.000 description 6
- 238000001816 cooling Methods 0.000 description 5
- 239000002245 particle Substances 0.000 description 5
- 239000007789 gas Substances 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- 238000000889 atomisation Methods 0.000 description 2
- 238000010981 drying operation Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000011344 liquid material Substances 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 230000005496 eutectics Effects 0.000 description 1
- 239000012263 liquid product Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
Landscapes
- Drying Of Solid Materials (AREA)
Abstract
The utility model relates to spray freezing granulation drying equipment which comprises a spray freezing unit, a first temperature control unit, a first nitrogen cylinder, a strip-shaped vacuum drying unit, a second temperature control unit and a bag filter. The spray freezing device has the advantages that after the spray freezing unit is used for carrying out primary spray freezing drying on the feed liquid, the feed liquid is subjected to secondary freezing drying through the strip-shaped vacuum drying unit, so that the drying time is shortened, the whole drying efficiency is accelerated, and the waste of the production cost is reduced.
Description
Technical Field
The utility model relates to the technical field of drying equipment, in particular to spray freeze granulation drying equipment.
Background
Spray Freeze Drying (SFD) is a process in which a liquid product is atomized and frozen into ice powder or particles by full contact with a cold medium (e.g., liquid nitrogen, cold air flow, etc.), and the frozen ice powder or particles are then freeze-dried under reduced pressure to powder particles. The technology is widely applied to the fields of food and medicine research and development at present because the technology is dried at low temperature and is particularly suitable for drying high-temperature sensitive materials.
Existing spray freeze drying equipment generally includes a material atomizing stage, a freeze atomizing material stage, and a freeze drying stage in the order of processing. The material atomizing stage is to atomize the liquid material into tiny liquid drops through an atomizer, and the main purpose is to increase the surface area of the liquid material and strengthen the heat transfer and mass transfer rate of the later stage; the material freezing and atomizing stage is to make atomized tiny liquid drops pass through a cold medium area and fully contact with the cold medium, so that the material is quickly frozen below the eutectic point temperature of the material in a short time to form small ice particles; the freeze-drying stage is to freeze-dry the frozen small ice particles in vacuum.
Although the three stages can minimize the drying loss of the high-temperature-sensitive material, some spray freeze drying devices sequentially perform drying operation according to the three stages, which takes a long time, has low production efficiency and further causes higher production cost.
At present, the technical problems are not properly solved.
Disclosure of Invention
Aiming at the defects of the prior art, the utility model aims to provide spray freeze granulation drying equipment so as to solve the technical problems that the prior spray freeze drying equipment sequentially performs drying operation according to the material atomizing stage, the frozen atomized material stage and the freeze drying stage, and has long time consumption, low production efficiency and higher production cost.
The above object of the present utility model is achieved by the following technical solutions:
the utility model provides spray freezing granulation drying equipment, which comprises a spray freezing unit, a first temperature control unit, a first nitrogen cylinder, a strip-shaped vacuum drying unit, a second temperature control unit and a bag filter;
the inner cavity of the spray freezing unit is divided into a first freezing outer cavity and a first treatment inner cavity by an orifice plate with an annular structure, the first freezing outer cavity is connected with a first temperature control unit through a pipeline, and the top end of the first treatment inner cavity is connected with a material liquid tank and a first nitrogen bottle through pipelines respectively;
the inner cavity of the banded vacuum drying unit is divided into a second freezing outer cavity and a second treatment inner cavity, the second freezing outer cavity is connected with a second temperature control unit through a pipeline, a bottom discharge port of the spraying freezing unit is communicated with the second treatment inner cavity through a pipeline, and the top end of the second treatment inner cavity is communicated with the bag filter.
As some embodiments, a spray header is installed at the top end of the first processing chamber, the spray header is communicated with the feed liquid tank through a pipeline, and a feed pump is arranged on the pipeline between the spray header and the feed liquid tank.
As some embodiments, the first temperature control unit comprises a liquid nitrogen cooler and a second nitrogen cylinder, liquid nitrogen is stored in the liquid nitrogen cooler, one end of the liquid nitrogen cooler is connected with the second nitrogen cylinder through a pipeline, and the other end of the liquid nitrogen cooler is communicated with the first freezing outer cavity through a pipeline.
As some of these embodiments, the belt-shaped vacuum drying unit is a conical belt-shaped vacuum dryer.
As some embodiments, the second temperature control unit comprises a refrigerating unit, an electric heater and a liquid inlet pump, wherein the refrigerating liquid is stored in the refrigerating unit, the downstream of the refrigerating unit is connected with the liquid inlet pump through a pipeline, the pipeline is simultaneously connected with the first end of the electric heater, the downstream of the liquid inlet pump is connected with the liquid inlet of the second refrigerating outer cavity through a pipeline, and the upstream of the refrigerating unit is connected with the liquid outlet of the second refrigerating outer cavity through a pipeline, and the pipeline is simultaneously connected with the second end of the electric heater.
As some of these examples, the outside of the spray freezing unit and the belt-shaped vacuum drying unit are respectively provided with a vacuum jacket.
In summary, the beneficial technical effects are as follows:
after the spray freezing unit is used for carrying out primary spray freezing drying on the feed liquid, the feed liquid is subjected to secondary freezing drying through the strip-shaped vacuum drying unit, so that the drying time is shortened, the overall drying efficiency is accelerated, and the waste of the production cost is further reduced.
Drawings
Fig. 1 is a schematic flow chart of a spray freeze granulation drying apparatus in an embodiment of the present utility model.
Reference numerals:
1. a spray freezing unit; 2. a first temperature control unit; 201. a second nitrogen cylinder; 202. a cooling tank; 203. a disc tube; 3. a first nitrogen cylinder; 4. a belt-shaped vacuum drying unit; 5. a second temperature control unit; 501. an electric heater; 502. a liquid inlet pump; 6. a bag filter; 7. an orifice plate; 8. a first frozen outer chamber; 9. a first treatment lumen; 10. a second frozen outer chamber; 11. a second treatment lumen; 12. a spray header; 13. a feed pump; 14. and (5) a vacuum jacket.
Detailed Description
The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model; it is apparent that the described embodiments are only some embodiments of the present utility model, not all embodiments, and that all other embodiments obtained by persons of ordinary skill in the art without making creative efforts based on the embodiments in the present utility model are within the protection scope of the present utility model.
In the description of the present utility model, it should be noted that the positional or positional relationship indicated by the terms such as "upper", "lower", "inner", "outer", "top/bottom", etc. are based on the positional or positional relationship shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "configured to," "engaged with," "connected to," and the like are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
Examples
As shown in fig. 1, the spray freeze granulation drying equipment disclosed by the utility model comprises a spray freezing unit 1, a first temperature control unit 2, a first nitrogen cylinder 3, a strip vacuum drying unit 4, a second temperature control unit 5 and a bag filter 6; the inner cavity of the spray freezing unit 1 is divided into a first freezing outer cavity 8 and a first treatment inner cavity 9 by an orifice plate 7 with an annular structure, the first freezing outer cavity 8 is connected with the first temperature control unit 2 through a pipeline, and the top end of the first treatment inner cavity 9 is connected with a material liquid tank and a first nitrogen cylinder 3 through pipelines respectively; the inner cavity of the banded vacuum drying unit 4 is divided into a second freezing outer cavity 10 and a second processing inner cavity 11, the second freezing outer cavity 10 is connected with the second temperature control unit 5 through a pipeline, a discharge port at the bottom end of the spraying freezing unit 1 is communicated with the second processing inner cavity 11 through a pipeline, and the top end of the second processing inner cavity 11 is communicated with the bag filter 6.
Wherein the first nitrogen cylinder 3 pumps nitrogen into the first treatment cavity 9 by means of an air inlet pump.
Further, a spray header 12 is installed at the top end of the first treatment inner cavity 9, the spray header 12 is communicated with the feed liquid tank through a pipeline, and a feed pump 13 is arranged on the pipeline between the spray header 12 and the feed liquid tank.
Wherein, the feed liquid jar pumps the feed liquid into shower head 12 through charge pump 13, and shower head 12 makes the feed liquid get into first processing inner chamber 9 in the form of liquid droplet, and simultaneously under the nitrogen gas effect from first nitrogen gas bottle 3, the atomizing gradually.
Further, the first temperature control unit 2 comprises a liquid nitrogen cooler and a second nitrogen cylinder 201, liquid nitrogen is stored in the liquid nitrogen cooler, one end of the liquid nitrogen cooler is connected with the second nitrogen cylinder 201 through a pipeline, and the other end of the liquid nitrogen cooler is communicated with the first freezing outer cavity 8 through a pipeline.
The liquid nitrogen cooler comprises a cooling tank 202 and a tray tube 203, wherein the cooling tank 202 is filled with liquid nitrogen through the liquid nitrogen tank and stores the liquid nitrogen, the tray tube 203 is installed in the cooling tank 202, one end of the tray tube 203 is connected with the second nitrogen bottle 201 through a pipeline, and the other end of the tray tube 203 is communicated with the first freezing outer cavity 8 through a pipeline. The difference between the spray freeze drying device and the traditional spray freeze drying device is that the first freezing outer cavity 8 is not filled with liquid nitrogen, but cooled nitrogen, the cooled nitrogen enters the first treatment inner cavity 9 through the pore plate 7 with a ring-shaped structure, the primary freeze drying is carried out on atomized feed liquid, the atomization effect is enhanced, and compared with the direct freezing operation by using liquid nitrogen, the spray freeze drying device is more economical.
Further, the belt-shaped vacuum drying unit 4 is a conical belt-shaped vacuum dryer.
The material is turned into powder-like material through the belt-shaped vacuum drying unit 4, and is discharged from the bottom outlet of the conical belt-shaped vacuum dryer.
Further, the second temperature control unit 5 includes a refrigerating unit, an electric heater 501 and a liquid inlet pump 502, the refrigerating unit stores refrigerating liquid, the downstream of the refrigerating unit is connected with the liquid inlet pump 502 through a pipeline, the pipeline is simultaneously connected with the first end of the electric heater 501, the downstream of the liquid inlet pump 502 is connected with the liquid inlet of the second refrigerating outer chamber 10 through a pipeline, the upstream of the refrigerating unit is connected with the liquid outlet of the second refrigerating outer chamber 10 through a pipeline, and the pipeline is simultaneously connected with the second end of the electric heater 501.
Wherein, the refrigerating unit is a water-cooling low-temperature oil cooler.
Wherein the electric heater 501 is used for adjusting the temperature of the circulated refrigerating fluid.
After the material from the spray freezing unit 1 is primarily freeze-dried, under the transmission of the conical belt-shaped vacuum drier, the heat exchange area of the material is increased through the spiral belt rotation of the conical belt-shaped vacuum drier, the freezing effect of the material by the second freezing outer cavity 10 is enhanced, the time of the drying process is reduced, the whole drying efficiency is accelerated, and the waste of the production cost is reduced.
Further, the outside of the spray freezing unit 1 and the belt-shaped vacuum drying unit 4 are respectively mounted with a vacuum jacket 14.
The vacuum jacket 14 ensures that the internal heat of the spray freezing unit 1 and the ribbon vacuum drying unit 4 is isolated from the external environment, ensuring the respective internal temperatures.
Further, the bag filter 6 discharges the gas in the whole device, wherein the gas part is discharged after being mixed with air with normal temperature and heated; and the other part of the gas with water is discharged after the water is removed through the refrigerating unit and the condenser.
The principle of use of this embodiment is as follows:
the feed liquid tank pumps the feed liquid into the spray header 12 through the feed pump 13, the spray header 12 enables the feed liquid to enter the first treatment inner cavity 9 in the form of small liquid drops, and the feed liquid is gradually atomized under the action of nitrogen from the first nitrogen bottle 3; the low-temperature nitrogen in the first freezing outer cavity 8 enters the first treatment inner cavity 9 through the pore plate 7 with the annular structure, and the atomization effect is enhanced while the atomized feed liquid is subjected to preliminary freeze drying; the material of spray freezing unit 1 gets into second processing inner chamber 11 after preliminary freeze-drying, and the spiral shell area that spiral shell area rotation through conical banded vacuum drier has increased the material and has carried out the heat exchange, has strengthened the material and has cooled effect by the outer chamber 10 of second freezing, leads to the time reduction of drying process, and whole drying efficiency accelerates, and then has reduced manufacturing cost's waste.
The advantages of this embodiment are: after the spray freezing unit is used for carrying out primary spray freezing drying on the feed liquid, the feed liquid is subjected to secondary freezing drying through the strip-shaped vacuum drying unit, so that the drying time is shortened, the overall drying efficiency is accelerated, and the waste of the production cost is further reduced.
The embodiments of the present utility model are all preferred embodiments of the present utility model, and the scope of the present utility model is not limited thereby, and the embodiments can be combined with each other for use, so: all equivalent changes in structure, shape and principle of the utility model should be covered in the scope of protection of the utility model.
Claims (6)
1. The spray freezing granulation drying equipment is characterized by comprising a spray freezing unit (1), a first temperature control unit (2), a first nitrogen cylinder (3), a strip-shaped vacuum drying unit (4), a second temperature control unit (5) and a bag filter (6);
the inner cavity of the spray freezing unit (1) is divided into a first freezing outer cavity (8) and a first treatment inner cavity (9) by an orifice plate (7) with an annular structure, the first freezing outer cavity (8) is connected with the first temperature control unit (2) through a pipeline, and the top end of the first treatment inner cavity (9) is connected with a material liquid tank and a first nitrogen gas cylinder (3) through pipelines respectively;
the inner cavity of the banded vacuum drying unit (4) is divided into a second freezing outer cavity (10) and a second processing inner cavity (11), the second freezing outer cavity (10) is connected with the second temperature control unit (5) through a pipeline, a bottom discharge port of the spraying freezing unit (1) is communicated with the second processing inner cavity (11) through a pipeline, and the top end of the second processing inner cavity (11) is communicated with the bag filter (6).
2. Spray freeze granulation drying apparatus according to claim 1, characterized in that a spray header (12) is mounted at the top end of the first treatment cavity, the spray header (12) is communicated with the feed liquid tank through a pipeline, and a feed pump (13) is arranged on the pipeline between the spray header (12) and the feed liquid tank.
3. Spray freeze granulation drying apparatus according to claim 1, characterized in that the first temperature control unit (2) comprises a liquid nitrogen cooler and a second nitrogen cylinder (201), the interior of which is stored with liquid nitrogen, one end of the liquid nitrogen cooler being connected to the second nitrogen cylinder (201) by a pipe, the other end being in communication with the first freezing external chamber (8) by a pipe.
4. Spray freeze granulation drying apparatus according to claim 1, characterized in that the belt-like vacuum drying unit (4) is a conical belt-like vacuum dryer.
5. Spray-freeze granulation drying apparatus according to claim 1, characterized in that the second temperature control unit (5) comprises a refrigerating unit, an electric heater (501) and a liquid inlet pump (502), wherein the refrigerating fluid is stored in the refrigerating unit, the downstream of the refrigerating unit is connected with the liquid inlet pump (502) through a pipeline, the pipeline is simultaneously connected with the first end of the electric heater (501), the downstream of the liquid inlet pump (502) is connected with the liquid inlet of the second external freezing chamber (10) through a pipeline, and the upstream of the refrigerating unit is connected with the liquid outlet of the second external freezing chamber (10) through a pipeline, and the pipeline is simultaneously connected with the second end of the electric heater (501).
6. Spray-freeze granulation drying apparatus according to any of claims 1-5, characterized in that the outside of the spray-freeze unit (1) and the belt-like vacuum drying unit (4) are each equipped with a vacuum jacket (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321172140.8U CN219722802U (en) | 2023-05-16 | 2023-05-16 | Spray freezing granulation drying equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321172140.8U CN219722802U (en) | 2023-05-16 | 2023-05-16 | Spray freezing granulation drying equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219722802U true CN219722802U (en) | 2023-09-22 |
Family
ID=88028566
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321172140.8U Active CN219722802U (en) | 2023-05-16 | 2023-05-16 | Spray freezing granulation drying equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219722802U (en) |
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2023
- 2023-05-16 CN CN202321172140.8U patent/CN219722802U/en active Active
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