CN112891969A - Hot air type spray drying device and hot air spray drying treatment method - Google Patents
Hot air type spray drying device and hot air spray drying treatment method Download PDFInfo
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- CN112891969A CN112891969A CN202110102228.1A CN202110102228A CN112891969A CN 112891969 A CN112891969 A CN 112891969A CN 202110102228 A CN202110102228 A CN 202110102228A CN 112891969 A CN112891969 A CN 112891969A
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- hot air
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- 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
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Abstract
The invention discloses a hot air type spray drying device and a hot air type spray drying treatment method, wherein the hot air type spray drying device comprises a feeding assembly, a drying assembly and a collecting assembly; the feeding assembly comprises a liquid storage tank and a peristaltic pump connected with the liquid storage tank through a feeding pipe; the drying component comprises a heater, a drying cavity and an atomizing nozzle arranged in the drying cavity, a material inlet of the heater is connected with the peristaltic pump through a connecting pipe, and a material outlet of the heater is connected with the atomizing nozzle through a connecting pipe; a discharge port valve is arranged on the discharge port; the outer wall of the drying cavity is also provided with a hot air port and an air outlet; the collecting assembly comprises a discharge port arranged at the lower end of the drying cavity and a charging box arranged on the lower side of the discharge port. The hot air type spray drying device inputs hot air through the hot air port to heat the atomized solution sprayed by the atomizing nozzle so as to carry out solid-liquid separation on the atomized solution; the liquid volatilized from the inside of the drying cavity is discharged through the air outlet, so that the solid-liquid separation is more sufficient.
Description
Technical Field
The invention relates to the technical field of solid-liquid separation devices, in particular to a hot air type spray drying device and a hot air spray drying treatment method.
Background
In the process of producing some chemicals, solid-liquid separation and drying treatment are required to obtain a solid product, for example, in the case of preparing an acrylate product by using a precipitation method, solid-liquid separation and vacuum drying treatment are required to obtain a final acrylate solid product, and in the case of solid-liquid separation treatment, the conventional methods include a suction filtration method and a filtration centrifugation method. However, the two methods have some disadvantages, the suction filtration method is to form a water ring of a rotational flow along a pump shell by working water under the action of centrifugal force through a circulating water vacuum pump to form pressure difference, so that the acrylic resin solution is subjected to solid-liquid separation through filter paper, but the suction filtration method has the defects that the working efficiency is low, new cold working water needs to be supplemented for a long working time, the solid-liquid separation effect is poor due to low vacuum degree, the obtained solid-phase product contains a large amount of liquid, the large-scale use of the method is limited due to the defects that the acrylic resin solution is partially piled together after solid-phase separation, and the liquid cannot be completely separated. The filtration type centrifugal method is to generate centrifugal force at high speed and achieve the purpose of solid-liquid separation through filter cloth, but has the defects of high cost, complex operation, low efficiency and the like.
In conclusion, the solid-liquid separation efficiency is low no matter the solution is subjected to solid-liquid separation by adopting a suction filtration method or a filtration centrifugation method. Therefore, the prior art method has the problem of low solid-liquid separation efficiency.
Disclosure of Invention
The embodiment of the invention provides a hot air type spray drying device and a hot air spray drying treatment method, and aims to solve the problem of low solid-liquid separation efficiency in the prior art.
In a first aspect, an embodiment of the present invention provides a hot air type spray drying device, including a feeding component, a drying component, and a collecting component;
the feeding assembly comprises a liquid storage tank and a peristaltic pump connected with the liquid storage tank through a feeding pipe;
the drying component comprises a heater, a drying cavity and an atomizing nozzle arranged in the drying cavity, a material inlet of the heater is connected with the peristaltic pump through a connecting pipe, a material outlet of the heater is connected with the atomizing nozzle through a connecting pipe, and the atomizing nozzle is used for atomizing a solution input by the heater;
the outer wall of the drying cavity is also provided with a hot air port and an air outlet, and the hot air port is used for inputting hot air to heat the atomized solution sprayed by the atomizing nozzle so as to carry out solid-liquid separation on the atomized solution; the air outlet is arranged on the upper side of the hot air port and is used for discharging liquid volatilized from the drying cavity;
the collecting assembly comprises a discharge port arranged at the lower end of the drying cavity and a charging box arranged on the lower side of the discharge port; and a discharge port valve is arranged on the discharge port.
The hot air type spray drying device is characterized in that the hot air port is formed in the outer wall of the side face of the drying cavity and is formed in the lower side of the atomizing spray head.
The hot air type spray drying device is characterized in that the vertical distance between the hot air port and the atomizing spray head is 1-15 cm.
The hot air type spray drying device is characterized in that at least two hot air ports are formed in the outer wall of the side face of the drying cavity.
The hot air type spray drying device is characterized in that the air outlet is formed in the outer wall of the top surface of the drying cavity.
The hot air type spray drying device is characterized in that a feeding opening is further formed in the liquid storage tank.
In a second aspect, an embodiment of the present invention further provides a hot air spray drying method, where the hot air spray drying method is applied to the hot air spray drying device according to the first aspect, and the method includes:
controlling the discharge port valve to be closed;
controlling the peristaltic pump to work to draw solution from the liquid storage tank and input the solution to the heater;
controlling the heater to work so as to heat the solution and then output the solution to the atomizing nozzle for atomization;
controlling the hot air inlet to input hot air to heat the atomized solution sprayed by the atomizing spray head so as to carry out solid-liquid separation on the atomized solution and discharge the liquid volatilized from the drying cavity through the air outlet;
and controlling the hot air port to be closed and controlling the discharge port valve to be opened so as to guide the dry solids collected at the lower part of the drying cavity into the charging box through the discharge port.
The hot air spray drying treatment method is characterized in that the temperature of hot air input by the hot air port is 100-280 ℃.
The hot air spray drying treatment method is characterized in that the speed of hot air input by the hot air port is 0.5-15 m/s.
The hot air spray drying treatment method is characterized in that the heating temperature of the heater is 60-180 ℃.
The embodiment of the invention provides a hot air type spray drying device and a hot air type spray drying treatment method, wherein the hot air type spray drying device comprises a feeding assembly, a drying assembly and a collecting assembly; the feeding assembly comprises a liquid storage tank and a peristaltic pump connected with the liquid storage tank through a feeding pipe; the drying component comprises a heater, a drying cavity and an atomizing nozzle arranged in the drying cavity, a material inlet of the heater is connected with the peristaltic pump through a connecting pipe, and a material outlet of the heater is connected with the atomizing nozzle through a connecting pipe; a discharge port valve is arranged on the discharge port; the outer wall of the drying cavity is also provided with a hot air port and an air outlet; the collecting assembly comprises a discharge port arranged at the lower end of the drying cavity and a charging box arranged on the lower side of the discharge port. The hot air type spray drying device inputs hot air through the hot air port to heat the atomized solution sprayed by the atomizing nozzle so as to carry out solid-liquid separation on the atomized solution; liquid volatilized from the inside of the drying cavity is discharged through the air outlet, so that solid-liquid separation is more sufficient, and the efficiency of solid-liquid separation treatment is greatly improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a hot air type spray drying device according to an embodiment of the present invention;
fig. 2 is a flow chart of a hot air spray drying method according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It will be understood that the terms "comprises" and/or "comprising," when used in this specification and the appended claims, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.
It is also to be understood that the terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in the specification of the present invention and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. The following description of the embodiments refers to the accompanying drawings for illustrating the specific embodiments in which the invention may be practiced. In the present invention, directional terms such as "up", "down", "front", "back", "left", "right", "inner", "outer", "side", etc. refer to directions of the attached drawings. Accordingly, the directional terms used are used for explanation and understanding of the present invention, and are not used for limiting the present invention.
It should be further understood that the term "and/or" as used in this specification and the appended claims refers to and includes any and all possible combinations of one or more of the associated listed items.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a hot air type spray drying device according to an embodiment of the present invention. As shown in the figure, a hot air type spray drying device comprises a feeding assembly 10, a drying assembly 20 and a collecting assembly 30; the feeding assembly 10 comprises a liquid storage tank 1 and a peristaltic pump 3 connected with the liquid storage tank 1 through a feeding pipe 2; the drying component 20 comprises a heater 4, a drying cavity 6 and an atomizing nozzle 7 arranged in the drying cavity 6, a material inlet of the heater 4 is connected with the peristaltic pump 3 through a connecting pipe, a material outlet of the heater 4 is connected with the atomizing nozzle 7 through a connecting pipe, and the atomizing nozzle 7 is used for atomizing a solution input through the heater 4; the outer wall of the drying cavity 6 is also provided with a hot air port 61 and an air outlet 5, and the hot air port 61 is used for inputting hot air to heat the atomized solution sprayed by the atomizing nozzle 7 so as to carry out solid-liquid separation on the atomized solution; the air outlet 5 is arranged on the upper side of the hot air port 61, and the air outlet 5 is used for discharging the liquid volatilized from the drying cavity 6; the collecting assembly 30 comprises a discharge port 8 arranged at the lower end of the drying cavity 6 and a charging box 9 arranged at the lower side of the discharge port 8; and a discharge port valve 81 is arranged on the discharge port 8. The solution 110 may be stored in the reservoir 1, and the solution 110 may be a resin solution or a solution in which other chemical substances are dissolved.
In a more specific embodiment, the hot air port 61 is disposed on the outer wall of the side of the drying cavity 6 and the hot air port 61 is disposed on the lower side of the atomizing nozzle 7. More specifically, the vertical distance L between the hot air port 61 and the atomizing nozzle 7 is 1-15 cm. At least two hot air ports 61 are arranged on the outer wall of the side surface of the drying cavity 6. More specifically, the air outlet 5 is disposed on an outer wall of the top surface of the drying cavity 6. The number of hot air ports 61 can be two or more than two, if the number of hot air ports 61 is two, then two hot air ports 61 can be respectively arranged on the outer wall of the left and right sides of the drying cavity 6, if the number of hot air ports 61 is more than two, then the outer wall of the side surface of the drying cavity 6 can be arranged in an evenly distributed manner, and all the hot air ports 61 are arranged on the same horizontal line. The air outlet 5 can be arranged on the outer wall of the side surface of the drying cavity 6, the air outlet 5 is arranged on the upper side of the hot air port 61, and the air outlet can also be arranged on the outer wall of the top surface of the drying cavity 6.
Taking the resin solution stored in the liquid storage tank 1 as an example, the resin solution is pumped into the feeding pipe 2 by the peristaltic pump 3 and is further output to the drying cavity 6, wherein before being sent to the drying cavity 6, the resin solution is heated by the heater 4, so that the temperature of the resin solution can be heated to be not less than the boiling point of the resin solution before drying, the solid-liquid separation treatment efficiency of the resin solution is improved, namely the heating temperature of the heater 4 is necessarily higher than the boiling point of the solution, and the heating temperature of the heater can be flexibly set according to the boiling point of the solution. Need close discharge gate valve 81 earlier before carrying out the solid-liquid separation processing procedure, resin solution after the heating enters into drying chamber 6 after, at first atomize through atomizer 7, the atomizing can fully be broken apart resin solution, set up hot-blast mouth 61 output hot-blast in atomizer downside, to carry out hot-blast convection heating to atomized resin solution after the atomizing from the side, atomized resin solution can receive the heating effect of heater and the air current convection of hot-blast air current simultaneously and volatilize fast like this, make the solid-liquid separation process more abundant, compare the traditional treatment mode and have better solid-liquid separation's effect, wherein, the hot-blast temperature of hot-blast mouth output is higher than the heating temperature of heater 4. Meanwhile, an air outlet 5 is arranged on the upper side of the hot air port 61, and the volatilized liquid can be discharged through the air outlet 5. After the resin product collected at the lower part of the drying cavity 6 is subjected to solid phase settlement and dried, the hot air port 61 is closed, the discharge port valve 81 arranged at the discharge port 8 is opened, and the dried numerical value product is output to the charging box 9.
In a more specific embodiment, the reservoir 1 is further provided with a feed opening 11. The liquid storage tank 1 can be provided with the feeding opening 11, so that the solid-liquid separation and drying treatment process can be continuously carried out through the feeding opening 11, the subsequent solid-liquid separation and drying treatment process is not influenced in the feeding process, and the efficiency of the solid-liquid separation and drying treatment can be further improved.
The embodiment of the invention also provides a hot air spray drying treatment method, which is applied to the hot air type spray drying device. Specifically, referring to fig. 2, fig. 2 is a flowchart of a hot air spray drying method according to an embodiment of the present invention. As shown in fig. 2, the method includes steps S101 to S105.
S101, controlling a discharge port valve to be closed; s102, controlling the peristaltic pump to work so as to draw solution from the liquid storage pool and input the solution to the heater; s103, controlling the heater to work so as to heat the solution and then output the heated solution to the atomizing nozzle for atomization. Wherein the heating temperature of the heater is 60-180 ℃. The solution can be preheated in advance by the heater before being input into the drying cavity 6, so that the efficiency of solid-liquid separation treatment is improved.
S104, controlling the hot air inlet to input hot air to heat atomized solution sprayed by the atomizing nozzle so as to carry out solid-liquid separation on the atomized solution and discharge the liquid volatilized in the drying cavity through the air outlet. Wherein the temperature of hot air input by the hot air port is 100-280 ℃; the speed of hot air input by the hot air port is 0.5-15 m/s. The temperature of the hot air output by the hot air port 61 is higher than the heating temperature, the hot air can be output through the hot air port 61, heat and air flow are provided for the atomized solution at the first time, so that solid-liquid separation is carried out on the liquid, and the hot air output from the hot air port 61 has higher temperature, so that the hot air output from the hot air port 61 can further dry the product collected at the lower part of the drying cavity 6, and the completely dried product is obtained.
S105, controlling the hot air port to be closed and controlling the discharge port valve to be opened so as to guide the dry solids collected at the lower part of the drying cavity into the charging box through the discharge port. After the hot air port 61 is closed, the material port valve 81 can be opened, and the dry solids collected at the lower part of the drying cavity 6 are introduced into the charging box 9 through the material outlet 8. When the production of one batch of solid products is completed, the operation may return to step S101 to continue the production of the next batch of solid products, so as to mass-produce the solid products by means of this cyclic process.
The hot air type spray drying device and the hot air type spray drying processing method provided by the embodiment of the invention are characterized in that the hot air type spray drying device comprises a feeding component, a drying component and a collecting component; the feeding assembly comprises a liquid storage tank and a peristaltic pump connected with the liquid storage tank through a feeding pipe; the drying component comprises a heater, a drying cavity and an atomizing nozzle arranged in the drying cavity, a material inlet of the heater is connected with the peristaltic pump through a connecting pipe, and a material outlet of the heater is connected with the atomizing nozzle through a connecting pipe; a discharge port valve is arranged on the discharge port; the outer wall of the drying cavity is also provided with a hot air port and an air outlet; the collecting assembly comprises a discharge port arranged at the lower end of the drying cavity and a charging box arranged on the lower side of the discharge port. The hot air type spray drying device inputs hot air through the hot air port to heat the atomized solution sprayed by the atomizing nozzle so as to carry out solid-liquid separation on the atomized solution; liquid volatilized from the inside of the drying cavity is discharged through the air outlet, so that solid-liquid separation is more sufficient, and the efficiency of solid-liquid separation treatment is greatly improved.
While the invention has been described with reference to specific embodiments, the invention is not limited thereto, and various equivalent modifications and substitutions can be easily made by those skilled in the art within the technical scope of the invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. A hot air type spray drying device is characterized by comprising a feeding component, a drying component and a collecting component;
the feeding assembly comprises a liquid storage tank and a peristaltic pump connected with the liquid storage tank through a feeding pipe;
the drying component comprises a heater, a drying cavity and an atomizing nozzle arranged in the drying cavity, a material inlet of the heater is connected with the peristaltic pump through a connecting pipe, a material outlet of the heater is connected with the atomizing nozzle through a connecting pipe, and the atomizing nozzle is used for atomizing a solution input by the heater;
the outer wall of the drying cavity is also provided with a hot air port and an air outlet, and the hot air port is used for inputting hot air to heat the atomized solution sprayed by the atomizing nozzle so as to carry out solid-liquid separation on the atomized solution; the air outlet is arranged on the upper side of the hot air port and is used for discharging liquid volatilized from the drying cavity;
the collecting assembly comprises a discharge port arranged at the lower end of the drying cavity and a charging box arranged on the lower side of the discharge port; and a discharge port valve is arranged on the discharge port.
2. The hot air type spray drying device according to claim 1, wherein the hot air port is disposed on the outer wall of the side of the drying chamber and the hot air port is disposed at the lower side of the atomizer.
3. The hot air type spray drying device according to claim 2, wherein the vertical distance between the hot air port and the atomizer is 1-15 cm.
4. The hot air type spray drying device according to claim 3, wherein at least two hot air ports are provided on the outer wall of the side of the drying chamber.
5. The hot air type spray drying device according to claim 4, wherein the air outlet is disposed on the outer wall of the top surface of the drying chamber.
6. The hot air type spray drying device according to claim 5, wherein the liquid storage tank is further provided with a feeding opening.
7. A hot air spray drying method applied to the hot air type spray drying apparatus according to any one of claims 1 to 6, the method comprising:
controlling the discharge port valve to be closed;
controlling the peristaltic pump to work to draw solution from the liquid storage tank and input the solution to the heater;
controlling the heater to work so as to heat the solution and then output the solution to the atomizing nozzle for atomization;
controlling the hot air inlet to input hot air to heat the atomized solution sprayed by the atomizing spray head so as to carry out solid-liquid separation on the atomized solution and discharge the liquid volatilized from the drying cavity through the air outlet;
and controlling the hot air port to be closed and controlling the discharge port valve to be opened so as to guide the dry solids collected at the lower part of the drying cavity into the charging box through the discharge port.
8. The hot air spray drying method according to claim 7, wherein the temperature of the hot air supplied from the hot air port is 100 to 280 ℃.
9. The hot air spray drying method according to claim 8, wherein the speed of the hot air supplied from the hot air port is 0.5 to 15 m/s.
10. The hot air spray drying method according to claim 7, wherein the heating temperature of the heater is 60 to 180 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110102228.1A CN112891969A (en) | 2021-01-26 | 2021-01-26 | Hot air type spray drying device and hot air spray drying treatment method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110102228.1A CN112891969A (en) | 2021-01-26 | 2021-01-26 | Hot air type spray drying device and hot air spray drying treatment method |
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| CN112891969A true CN112891969A (en) | 2021-06-04 |
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| CN202110102228.1A Pending CN112891969A (en) | 2021-01-26 | 2021-01-26 | Hot air type spray drying device and hot air spray drying treatment method |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203944143U (en) * | 2014-05-13 | 2014-11-19 | 宁波大学 | A kind of spray dryer |
| CN205133469U (en) * | 2015-10-30 | 2016-04-06 | 嘉兴赞宇科技有限公司 | Preparation facilities of likepowder fatty acid methyl ester sodium sulfonate |
| CN205288143U (en) * | 2016-01-19 | 2016-06-08 | 江西省祥橱实业有限公司 | A spraying mix the dry machine for producing dove is smart |
-
2021
- 2021-01-26 CN CN202110102228.1A patent/CN112891969A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203944143U (en) * | 2014-05-13 | 2014-11-19 | 宁波大学 | A kind of spray dryer |
| CN205133469U (en) * | 2015-10-30 | 2016-04-06 | 嘉兴赞宇科技有限公司 | Preparation facilities of likepowder fatty acid methyl ester sodium sulfonate |
| CN205288143U (en) * | 2016-01-19 | 2016-06-08 | 江西省祥橱实业有限公司 | A spraying mix the dry machine for producing dove is smart |
Non-Patent Citations (1)
| Title |
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| 李斌: "《船舶柴油机》", 30 September 2014, 大连海事大学出版社 * |
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