CN116459535A - Modular dual-purpose spray drying tower - Google Patents
Modular dual-purpose spray drying tower Download PDFInfo
- Publication number
- CN116459535A CN116459535A CN202310449457.XA CN202310449457A CN116459535A CN 116459535 A CN116459535 A CN 116459535A CN 202310449457 A CN202310449457 A CN 202310449457A CN 116459535 A CN116459535 A CN 116459535A
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- Prior art keywords
- spray drying
- centrifugal
- airflow
- air
- spray gun
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- 238000001694 spray drying Methods 0.000 title claims abstract description 76
- 238000001035 drying Methods 0.000 claims abstract description 52
- 239000007921 spray Substances 0.000 claims abstract description 47
- 239000000463 material Substances 0.000 claims abstract description 29
- 230000002572 peristaltic effect Effects 0.000 claims abstract description 18
- 239000002245 particle Substances 0.000 claims description 21
- 230000001105 regulatory effect Effects 0.000 claims description 8
- 239000011521 glass Substances 0.000 claims description 4
- 238000000889 atomisation Methods 0.000 abstract description 9
- 238000000034 method Methods 0.000 description 10
- 239000003595 mist Substances 0.000 description 10
- 239000007788 liquid Substances 0.000 description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 239000000843 powder Substances 0.000 description 5
- 239000011362 coarse particle Substances 0.000 description 3
- 239000011344 liquid material Substances 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000002912 waste gas Substances 0.000 description 2
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 1
- 235000017491 Bambusa tulda Nutrition 0.000 description 1
- 241001330002 Bambuseae Species 0.000 description 1
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 1
- 239000011425 bamboo Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005243 fluidization Methods 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D1/00—Evaporating
- B01D1/16—Evaporating by spraying
- B01D1/18—Evaporating by spraying to obtain dry solids
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D1/00—Evaporating
- B01D1/30—Accessories for evaporators ; Constructional details thereof
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
Abstract
The invention discloses a modularized dual-purpose spray drying tower, which comprises a constant-current peristaltic pump, a variable-frequency blower, an air heater, a drying cylinder, an atomization drying module and a material receiving system, wherein the atomization drying module comprises a centrifugal spray drying module and an airflow type spray drying module which can be switched, the centrifugal spray drying module adopts a centrifugal rotary disk atomizer, and the airflow type spray drying module comprises a hot air distributor and an airflow type spray gun; the centrifugal rotary disk atomizer or the hot air distributor is arranged in the groove position through the respective inverted cone structure to be combined with the drying cylinder; when the hot air distributor is installed, the airflow spray gun is installed at the bottom of the drying cylinder body and is connected with the constant-current peristaltic pump. Thus, separate centrifugal spray drying and separate airflow spray drying can be realized, and the two modes can not be mutually influenced.
Description
Technical Field
The invention relates to the technical field of chemical treatment equipment, in particular to a spray drying tower.
Background
The spray drying tower is a device for drying liquid materials by a fluidization technology, and is used for atomizing the liquid materials into fine mist drops after concentrating the liquid materials to a proper density, and carrying out heat exchange with a hot air flow with a certain flow rate to quickly evaporate moisture and dry the materials into powder or granules. Nebulizers are a key component of spray drying equipment, and there are three types of nebulizers in common use: pressure type atomizers, air flow type atomizers and centrifugal type atomizers.
At present, a spray drying tower on the market generally has only one spray drying mode, however, a single spray drying mode is difficult to meet the requirements of different materials and different particle sizes, and many times, more than two spray drying towers with different spray drying modes are needed to meet different spray drying requirements, but the equipment cost is obviously increased, and a plurality of equipment also occupy more installation space, so that spray drying equipment capable of meeting different spray drying requirements is needed. Patent CN206295613U discloses a dual-purpose spray drying tower of pressure type and centrifugal type, which proposes a solution in which a centrifugal rotary disk atomizer is installed at the top of one spray drying tower at the same time, and a pressure type spray gun is provided at one side of the bottom of the drying tower. However, since two different spray guns are fixed in the spray tower at the same time, when centrifugal spray drying is used alone, the presence of another pressure type spray gun can affect powder collection because a part of powder can accumulate on the pressure type spray gun and be continuously heated.
Disclosure of Invention
The invention aims at solving the technical problems of the prior art, and provides a modularized dual-purpose spray drying tower which has a simple structure and a more reasonable design, and can realize independent centrifugal spray drying and independent airflow spray drying on the same equipment through the combination of different modules.
In order to solve the technical problems, the invention adopts the following technical scheme: the utility model provides a dual-purpose spray drying tower of modularization, including constant current peristaltic pump, variable frequency forced draught blower, air heater, dry barrel (tower body), atomizing drying module and receipts material system, receive the material system and be connected with dry barrel through the pipeline, constant current peristaltic pump is connected with atomizing drying module, air heater is connected with dry barrel, variable frequency forced draught blower is connected with air heater, its characterized in that: the spray drying module is a centrifugal spray drying module and an airflow spray drying module which can be switched, the two spray drying modules are arranged on the drying cylinder body in a selective mode for spray drying, a centrifugal spray drying mode is formed when the centrifugal spray drying module is adopted, and an airflow spray drying mode is formed when the airflow spray drying module is adopted; the centrifugal spray drying module adopts a centrifugal rotary disk atomizer, and the airflow type spray drying module comprises a hot air distributor and an airflow type spray gun; the centrifugal rotary disc atomizer or the hot air distributor is arranged in the groove positions through the respective reverse conical structures to be combined with the drying cylinder; when the air flow type spray gun is installed in the hot air distributor, the air flow type spray gun is installed at the bottom of the drying cylinder body, so that the hot air distributor is opposite to the air flow type spray gun up and down, and the air flow type spray gun is connected with the constant flow peristaltic pump.
Further, the material receiving system comprises a cyclone separator, a material receiving barrel and an induced draft fan, wherein the induced draft fan is connected with the upper part of the cyclone separator, and the material receiving barrel is connected with the lower part of the cyclone separator.
When the centrifugal rotary disk atomizer is arranged in the groove, the pipeline adopts an induced air bent pipeline, the induced air bent pipeline adopts a quick-connection buckle to be connected with an outlet at the bottom of the drying cylinder, and the cyclone separator is connected with the induced air bent pipeline.
Preferably, when the hot air distributor is arranged in the groove, the pipeline adopts an induced air straight pipeline, the induced air straight pipeline is connected with a three-way joint by adopting a quick-connection buckle, the three-way joint is connected with an outlet at the bottom of the drying cylinder, the other interface of the three-way joint is connected with a particle collecting barrel, and the cyclone separator is connected with the induced air straight pipeline.
Further, the three-way joint is fixedly connected with the airflow type spray gun, and a position knob is arranged on the three-way joint, so that the position of the airflow type spray gun is finely adjusted through the position knob; the constant-current peristaltic pump is connected into a material pipeline of the airflow type spray gun through the position knob; the position knob is also connected with an air pressure regulating valve.
Further, a laser lamp is arranged in the center of the hot air distributor, and the laser lamp is vertically opposite to the airflow type spray gun and is used for positioning the gun mouth position of the airflow type spray gun.
Further, be provided with the manhole on the section of thick bamboo wall of drying cylinder, be provided with transparent glass observation window in the manhole, the accessible is looked the observation window and is observed and judge atomizing and dry condition.
Compared with the prior art, the invention has the following advantages: 1. the equipment has simple structure, reasonable design, convenient operation and lower equipment cost;
2. according to the structural characteristics of the existing centrifugal spray tower, corresponding modules can be produced and organized, and other airflow spray drying modes can be realized, so that equipment expenditure is saved;
3. spray drying is carried out from the bottom to the top by adopting airflow type spray, namely 'mixed flow type spray drying' fog particles are upwards formed into fountain shapes in the middle, vertically downward hot air in a drying cylinder is contacted with upwards fog feed liquid, so that the feed liquid is dried, the dried feed liquid is mixed into solid powder products in hot air, the solid powder products are adhered with liquid fog particles again in the falling process, larger fog particles are formed, the drying is continued, and coarse particle spherical products are formed after the drying. The flowability of the dried product is better, and the obtained product is a hollow coarse-particle spherical product which is coarser than the product coming out of the centrifugal spray dryer, so that the instant property of the product is particularly good. The taper angle of the spray liquid mist of the spray gun can be adjusted, and the particle size of the product can be controlled according to the drying condition of mist particles. The particle size range of the existing centrifugal spray drying is 40-100 microns, and the particle size range of the existing centrifugal spray drying is 80-300 microns.
Drawings
FIG. 1 is a schematic diagram of a first application state of the present invention;
fig. 2 is a schematic structural diagram of a second application state of the present invention.
In the figure, 1 is a constant-current peristaltic pump, 2 is a variable-frequency blower, 3 is an air heater, 4 is a centrifugal turntable atomizer, 5 is a hot air distributor, 51 is a laser lamp, 6 is a drying cylinder, 61 is a mounting frame, 62 is a groove position, 63 is a human hole, 71 is an induced air bent pipeline, 72 is an induced air straight pipeline, 8 is a cyclone separator, 9 is a material collecting barrel, 10 is an induced draft fan, 11 is an air pressure regulating valve, 12 is an airflow spray gun, 13 is a three-way joint, 14 is a position knob, and 15 is a particle material collecting barrel.
Detailed Description
In this embodiment, referring to fig. 1 and 2, the modular dual-purpose spray drying tower includes a constant-current peristaltic pump 1, a variable-frequency blower 2, an air heater 3, a drying cylinder 6, an atomization drying module and a material receiving system, wherein the material receiving system is connected with the drying cylinder 6 through a pipeline, the constant-current peristaltic pump 1 is connected with the atomization drying module, the air heater 3 is connected with the drying cylinder 6, and the variable-frequency blower 2 is connected with the air heater 3; the atomization drying module is a centrifugal spray drying module and an airflow type spray drying module which can be switched, the two spray drying modules are arranged on the drying cylinder 6 in a selective mode for atomization drying, a centrifugal spray drying mode is formed when the centrifugal spray drying module is adopted, and an airflow type spray drying mode is formed when the airflow type spray drying module is adopted; the centrifugal spray drying module adopts a centrifugal rotary disk atomizer 4, and the airflow type spray drying module comprises a hot air distributor 5 and an airflow type spray gun 12; the centrifugal rotary disk atomizer 4 and the hot air distributor 5 are respectively provided with an inverted cone structure which is folded inwards, a mounting frame 61 is arranged at the upper part of the drying cylinder 6, a groove position 62 matched with the inverted cone structure is arranged on the mounting frame 61, and the centrifugal rotary disk atomizer 4 or the hot air distributor 5 is arranged in the groove position 61 through the respective inverted cone structure to be combined with the drying cylinder 6; when the air distributor 5 is installed, the air flow type spray gun 12 is installed at the bottom of the drying cylinder 6, so that the air flow distributor 5 is opposite to the air flow type spray gun 12 up and down, and the air flow type spray gun 12 is connected with the constant flow peristaltic pump 1.
The material collecting system comprises a cyclone separator 8, a material collecting barrel 9 and an induced draft fan 10, wherein the induced draft fan 10 is connected with the upper part of the cyclone separator 8, and the material collecting barrel 9 is connected with the lower part of the cyclone separator 8.
As a first application state, referring to fig. 1, when the centrifugal turntable atomizer 4 is mounted in the groove 61, the duct adopts a wind-guiding bent duct 71, the wind-guiding bent duct 71 adopts a quick-connection buckle to be connected with an outlet at the bottom of the drying cylinder 6, and the cyclone separator 8 is connected with the wind-guiding bent duct 71.
As a second application state, referring to fig. 2, when the hot air distributor 5 is installed in the groove 61, the air guiding straight pipeline 72 is adopted as the pipeline, the air guiding straight pipeline 72 is connected with one three-way joint 13 by adopting a quick-connection buckle, the three-way joint 13 is connected with an outlet at the bottom of the drying cylinder 6, the other interface of the three-way joint 13 is connected with the particle receiving cylinder 15, and the cyclone separator 8 is connected with the air guiding straight pipeline 72.
The three-way joint 13 is fixedly connected with the airflow type spray gun 12, a position knob 14 is arranged on the three-way joint 13, and the position of the airflow type spray gun 12 is finely adjusted through the position knob 14; the constant flow peristaltic pump 1 is connected into a material pipeline of the airflow type spray gun 12 through the position knob 14; the position knob 14 is also connected with an air pressure regulating valve 11.
A laser lamp 51 is provided at the center of the hot air distributor 5, and the laser lamp 51 is vertically opposite to the air flow type spray gun 12 for positioning the muzzle position of the air flow type spray gun 12.
A manhole 63 is provided on the wall of the drying cylinder 6, and a transparent glass observation window is provided in the manhole 63, so that atomization and drying conditions can be observed and judged by looking at the observation window.
The working process comprises the following steps:
1. centrifugal spray drying mode:
the centrifugal rotary disk atomizer 4 (i.e. the centrifugal spray drying module) is placed in the groove position 62 in the center of the top of the drying cylinder 6, the atomization dryer is started, and the induced draft fan 10, the variable frequency blower 2, the air heater 3 and the centrifugal rotary disk atomizer 4 are sequentially started. When the inlet air temperature reaches the process requirement and the outlet air temperature exceeds the process requirement by more than 5 ℃, the constant-flow peristaltic pump 1 is started to pump the materials into the centrifugal turntable atomizer 4. The material is atomized into mist droplets under the action of high-speed centrifugal force of the centrifugal turntable atomizer 4, and the hot air heated to the process requirement by the air heater 3 quickly exchanges heat with the mist droplets due to the large specific surface area of the mist droplets, so that the moisture in the mist droplets is evaporated in a very short time, and the mist droplets are finally dried into powdery particles. The dried powdery particles are led into the cyclone separator 8 by the induced air bend pipeline 71 through the induced air fan 10, the powdery particles are settled into the collecting barrel 9 at the bottom by the cyclone separator 8, and the evaporated moisture waste gas is discharged to the outside by the induced air fan 10.
2. Airflow spray drying mode:
after the centrifugal rotary disk atomizer 4 is taken out, the hot air distributor 5 (i.e., the air-flow spray drying module) is placed in the groove position 62 in the center of the top of the drying cylinder 6. Turning on a laser lamp 51 at the center of the hot air distributor 5, and adjusting a position knob 14 so that the center of an atomizing nozzle of the airflow type atomizing gun 12 is irradiated by laser; the atomizing dryer is started, and the induced draft fan 10, the variable frequency blower 2, the air heater 3 and the air pressure regulating valve 11 (for cooling the airflow type spray gun 12) are sequentially started. When the air inlet temperature reaches the process requirement and the air outlet temperature exceeds the process requirement by more than 5 ℃, the constant flow peristaltic pump 1 is started to pump pure water into a material pipeline of the airflow type spray gun 12, and the pure water is sent into the airflow type spray gun 12 by the air pressure regulating valve 11 to be dispersed and atomized into mist droplets at high speed by high pressure airflow. And the air pressure sent by the air pressure regulating valve 11, the wind speed of the variable-frequency blower 2 and the flow speed of the constant-flow peristaltic pump 1 are regulated, so that atomized pure water mist drops form a fountain shape upwards in the middle of the drying cylinder 6. The top of the fountain shape is kept at about 10cm at the bottom of the hot air inlet, so that atomized fog drops contact vertically downward hot air in the drying cylinder 6, the pure water fog drops are completely evaporated, and no water drops are arranged on the inner wall of the drying cylinder 6 and glass of a manhole 63 observation window.
After confirming the optimal atomization drying state, pure water is replaced by a material to be atomized and dried, atomized material fog drops upwards form a fountain shape in the middle of the drying cylinder 6, and the atomized material fog drops are contacted with vertically downward hot air in the drying cylinder 6. Because the specific surface area of the fog drops is large, hot air heated to the process requirement by the air heater 3 quickly exchanges heat with the fog drops, moisture in the fog drops is evaporated in a very short time, and the fog drops are finally dried into powdery particles. The dried feed liquid is mixed in hot air as a solid powdery product, and is adhered with liquid fog particles again in the falling process to form larger fog particles, the drying is continued, and finally coarse particle spherical products are formed and directly fall into a particle receiving barrel 15 due to the large weight; part of the powdery particles are led to the cyclone separator 8 through the induced air straight pipeline 72 by the induced draft fan 10, the powdery particles are settled to the collecting barrel 9 at the bottom by the cyclone separator 8, and the evaporated moisture waste gas is discharged to the outside by the induced draft fan 10.
The upright barrel of the air-flow spray gun 12 can be of a plurality of long and short types, and can be assembled according to different process requirements of mixed flow spray drying.
The hot air distributor 5 distributes the inlet hot air downwards evenly, and keeps the central wind speed of the air flow type spray gun 12 and the lower part of the hot air distributor 5, so that atomized fog drops can be sent to the vicinity of the hot air inlet by high-pressure air flow.
The foregoing detailed description of the invention has been presented for purposes of illustration and description, but is not intended to limit the scope of the invention, i.e., the invention is not limited to the details shown and described.
Claims (7)
1. The utility model provides a dual-purpose spray drying tower of modularization, including constant current peristaltic pump, variable frequency forced draught blower, air heater, dry barrel, atomizing drying module and receipts material system, receive the material system to be connected with dry barrel through the pipeline, constant current peristaltic pump is connected with atomizing drying module, and air heater is connected with dry barrel, and variable frequency forced draught blower is connected with air heater, its characterized in that: the spray drying module is a centrifugal spray drying module and an airflow spray drying module which can be switched, the two spray drying modules are arranged on the drying cylinder body in a selective mode for spray drying, a centrifugal spray drying mode is formed when the centrifugal spray drying module is adopted, and an airflow spray drying mode is formed when the airflow spray drying module is adopted; the centrifugal spray drying module adopts a centrifugal rotary disk atomizer, and the airflow type spray drying module comprises a hot air distributor and an airflow type spray gun; the centrifugal rotary disc atomizer or the hot air distributor is arranged in the groove positions through the respective reverse conical structures to be combined with the drying cylinder; when the air flow type spray gun is installed in the hot air distributor, the air flow type spray gun is installed at the bottom of the drying cylinder body, so that the hot air distributor is opposite to the air flow type spray gun up and down, and the air flow type spray gun is connected with the constant flow peristaltic pump.
2. The modular dual-purpose spray drying tower of claim 1, wherein: the material receiving system comprises a cyclone separator, a material receiving barrel and an induced draft fan, wherein the induced draft fan is connected with the upper part of the cyclone separator, and the material receiving barrel is connected with the lower part of the cyclone separator.
3. The modular dual-purpose spray drying tower of claim 2, wherein: when the centrifugal turntable atomizer is arranged in the groove, the pipeline adopts an induced air bent pipeline, the induced air bent pipeline adopts a quick-connection buckle to be connected with an outlet at the bottom of the drying cylinder, and the cyclone separator is connected with the induced air bent pipeline.
4. The modular dual-purpose spray drying tower of claim 2, wherein: when the hot air distributor is arranged in the groove, the pipeline adopts an induced air straight pipeline, the induced air straight pipeline is connected with a three-way joint by adopting a quick-connection buckle, the three-way joint is connected with an outlet at the bottom of the drying cylinder, the other interface of the three-way joint is connected with a particle collecting barrel, and the cyclone separator is connected with the induced air straight pipeline.
5. The modular dual-purpose spray drying tower of claim 4, wherein: the three-way joint is fixedly connected with the airflow type spray gun, a position knob is arranged on the three-way joint, and the position of the airflow type spray gun is finely adjusted through the position knob; the constant-current peristaltic pump is connected into a material pipeline of the airflow type spray gun through the position knob; the position knob is also connected with an air pressure regulating valve.
6. The modular dual-purpose spray drying tower of claim 1, wherein: the center of the hot air distributor is provided with a laser lamp which is vertically opposite to the airflow type spray gun so as to position the gun muzzle of the airflow type spray gun.
7. The modular dual-purpose spray drying tower of claim 1, wherein: a manhole is arranged on the wall of the drying cylinder body, and a transparent glass observation window is arranged in the manhole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310449457.XA CN116459535A (en) | 2023-04-21 | 2023-04-21 | Modular dual-purpose spray drying tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310449457.XA CN116459535A (en) | 2023-04-21 | 2023-04-21 | Modular dual-purpose spray drying tower |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116459535A true CN116459535A (en) | 2023-07-21 |
Family
ID=87182177
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310449457.XA Pending CN116459535A (en) | 2023-04-21 | 2023-04-21 | Modular dual-purpose spray drying tower |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116459535A (en) |
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2023
- 2023-04-21 CN CN202310449457.XA patent/CN116459535A/en active Pending
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