CN112893049B - Drying equipment and application thereof - Google Patents
Drying equipment and application thereof Download PDFInfo
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- CN112893049B CN112893049B CN201911228265.6A CN201911228265A CN112893049B CN 112893049 B CN112893049 B CN 112893049B CN 201911228265 A CN201911228265 A CN 201911228265A CN 112893049 B CN112893049 B CN 112893049B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/04—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by exposure to gases
- B05D3/0406—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by exposure to gases the gas being air
- B05D3/0413—Heating with air
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B12/00—Arrangements for controlling delivery; Arrangements for controlling the spray area
- B05B12/08—Arrangements for controlling delivery; Arrangements for controlling the spray area responsive to condition of liquid or other fluent material to be discharged, of ambient medium or of target ; responsive to condition of spray devices or of supply means, e.g. pipes, pumps or their drive means
- B05B12/084—Arrangements for controlling delivery; Arrangements for controlling the spray area responsive to condition of liquid or other fluent material to be discharged, of ambient medium or of target ; responsive to condition of spray devices or of supply means, e.g. pipes, pumps or their drive means responsive to condition of liquid or other fluent material already sprayed on the target, e.g. coating thickness, weight or pattern
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B12/00—Arrangements for controlling delivery; Arrangements for controlling the spray area
- B05B12/08—Arrangements for controlling delivery; Arrangements for controlling the spray area responsive to condition of liquid or other fluent material to be discharged, of ambient medium or of target ; responsive to condition of spray devices or of supply means, e.g. pipes, pumps or their drive means
- B05B12/10—Arrangements for controlling delivery; Arrangements for controlling the spray area responsive to condition of liquid or other fluent material to be discharged, of ambient medium or of target ; responsive to condition of spray devices or of supply means, e.g. pipes, pumps or their drive means responsive to temperature or viscosity of liquid or other fluent material discharged
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
- B05B7/02—Spray pistols; Apparatus for discharge
- B05B7/04—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge
- B05B7/0416—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge with arrangements for mixing one gas and one liquid
Abstract
The invention discloses drying equipment and application thereof, belongs to the technical field of overall configuration catalyst preparation equipment, and solves the problem of poor coating firmness caused by cracking or peeling of a coating in the drying process of a coated slurry coating of an existing honeycomb metal substrate. The equipment provides hot air through a hot air supply assembly, provides atomized water through a water supply assembly, mixes the hot air and the atomized water through a gas-water mixer to form a gas-water mixture, and then dries a to-be-dried product placed on a supporting platform through the gas-water mixture. According to the invention, the slurry coating loaded on the honeycomb metal substrate is dried by hot air with certain humidity, so that the shrinkage stress caused by the difference of the drying rates of the surface of the coating and the inside of the coating in the drying process of the slurry coating can be effectively relieved, and the probability of cracks on the surface of the coating is avoided or reduced.
Description
Technical Field
The invention relates to the technical field of overall catalyst preparation equipment, in particular to drying equipment and application thereof.
Background
Since the seventies of the last century, the honeycomb metal matrix catalyst is widely applied to automobile exhaust purification, and the preparation technology of the honeycomb metal matrix catalyst is receiving more and more attention. Compared with ceramic matrix catalysts, the honeycomb metal matrix catalyst has the advantages of small heat capacity, high heat transfer efficiency, high mechanical strength, high aperture ratio, low resistance and the like, and is widely researched and applied to catalytic reaction systems involving heat absorption and heat release.
The conventional preparation process of the honeycomb metal matrix catalyst comprises matrix pretreatment, coating slurry preparation, coating, drying and roasting. However, because the surface of the honeycomb metal substrate is smooth and the thermal expansion coefficient of the honeycomb metal substrate and the carrier coating is different in order of magnitude, when the metal honeycomb substrate is coated with slurry, the surface of the slurry coating is easy to crack and even peel in the drying process, and the firmness of the coating is obviously reduced.
Disclosure of Invention
In view of the above, the invention provides a drying device and an application thereof, which can solve the problem of poor coating firmness caused by coating cracking or peeling in the drying process of the coating of the existing honeycomb metal substrate.
In order to achieve the purpose, the invention provides the following technical scheme:
a drying apparatus comprising:
the hot air supply assembly is used for providing hot air;
the water supply assembly is used for providing atomized water;
the air-water mixer is arranged at the outlets of the hot air supply assembly and the water supply assembly and is used for mixing the hot air and the atomized water to form an air-water mixture;
and the supporting platform is arranged at the outlet of the gas-water mixer and used for placing the product to be dried.
As a still further scheme of the invention: the hot air supply assembly comprises: a gas storage tank and a heater;
the heater is arranged on the air outlet pipe of the air storage tank and used for heating the flowing-out gas to form hot air.
As a still further scheme of the invention: a first temperature sensor and a control module are arranged in the heater;
the first temperature sensor is used for detecting the temperature of the gas heated by the heater;
the control module is used for controlling the temperature detected by the first temperature sensor.
As a still further scheme of the invention: the water replenishment assembly comprises: a water storage tank, a water pump and an atomizer;
the water pump is arranged on a water outlet pipeline of the water storage tank and is used for pumping out water in the water storage tank;
the atomizer is positioned in the gas-water mixer, a water outlet pipeline of the water pump penetrates through the cavity wall of the gas-water mixer to be connected with an inlet of the atomizer, and the atomizer atomizes water flowing out of the water outlet pipe to form atomized water.
As a still further scheme of the invention: the gas-water mixer comprises a cavity and a turbulence generator arranged in the cavity;
the turbulence generator is arranged at the outlet of the atomizer and is used for mixing hot air and atomized water to form a gas-water mixture.
As a still further scheme of the invention: the gas-water mixer further comprises: a first straight pipe and a second temperature sensor;
the first straight pipe is arranged at an outlet of the cavity and used for guiding the gas-water mixture to the product to be dried on the supporting platform;
the second temperature sensor is arranged on the first straight pipe and used for measuring the temperature of the gas-water mixture.
As a still further scheme of the invention: the supporting platform is arranged at an outlet of the gas-water mixer, the supporting platform is provided with an opening, a supporting clamp is arranged in the opening, and an inflatable air bag is arranged on the hole wall of the supporting clamp;
the supporting clamp is used for clamping the article to be dried.
As a still further scheme of the invention: the apparatus further comprises: a fairing;
the rectifying gas hood comprises an expansion pipe and a second straight pipe, the inlet of the expansion pipe is connected with the outlet of the gas-water mixer, and the outlet of the second straight pipe is connected with the supporting platform;
and a rectification distributor is arranged in the expansion pipe and used for rectifying and distributing the gas-water mixture flowing out of the gas-water mixer and then guiding the gas-water mixture to the product to be dried on the supporting platform.
As a still further scheme of the invention: the rectification distributor is a single-layer, double-layer or multi-layer flow guide grid plate, and the flow guide grid plate is provided with openings.
The invention also provides an application of any one of the drying devices, wherein the drying device is used for drying the carrier coating slurry coated on the honeycomb metal substrate.
The beneficial effects of the invention include but are not limited to:
(1) according to the drying equipment provided by the invention, hot air is provided through the arranged hot air supply assembly, atomized water is provided through the water supply assembly, hot air and atomized water are mixed through the air-water mixer to form an air-water mixture, and then the air-water mixture is used for drying a to-be-dried product placed on the supporting platform. According to the invention, the slurry coating loaded on the honeycomb metal substrate is dried by hot air with certain humidity, so that the shrinkage stress caused by the difference of the drying rates of the surface of the coating and the inside of the coating in the drying process of the slurry coating can be effectively relieved, and the probability of cracks on the surface of the coating is avoided or reduced.
(2) Furthermore, the flow guiding adjustment is carried out on the hot air flow through the arranged rectification air hood, so that the uniform blowing and drying of the slurry coating on the surface of the honeycomb metal matrix are realized, and the firmness of the coating is further improved. Furthermore, the invention realizes the adjustment of the wind power, the temperature and the humidity of the hot wind through the arranged air flow controller, the heater and the water pump.
(3) The drying equipment disclosed by the invention is simple in structure and convenient to operate, can realize rapid adjustment of the size, the temperature and the humidity of hot air, greatly reduces the cost of manpower and material resources, and further improves the processing efficiency and the production benefit.
Drawings
FIG. 1 is a schematic structural diagram of a drying apparatus provided in an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a spoiler provided in accordance with an embodiment of the present invention;
FIG. 3 is a schematic illustration of a structure of a fairing provided in accordance with an embodiment of the invention;
in the figure: 1-a gas storage tank; 2-an air flow controller; 3-a heater; 4-an air inlet; 5-a safety relief valve; 6-a stop valve I; 7-a first temperature sensor; 8-a water storage tank; 9-a water pump; 10-an atomizer; 11-a water inlet; 12-emergency drain port; 13-stop valve II; 14-a cavity; 15-a spoiler; 16-a first straight tube; 17-a second temperature sensor; 18-a support platform; 19-a support jig; 20-expanding the tube; 21-a second straight pipe; 22-rectifying distributor.
Detailed Description
The present invention will be described in detail with reference to examples, but the present invention is not limited to these examples.
As shown in fig. 1, a drying apparatus includes:
the hot air supply assembly is used for providing hot air;
the water supply assembly is used for providing atomized water;
The air-water mixer is arranged at the outlets of the hot air supply assembly and the water supply assembly and is used for mixing hot air and atomized water to form an air-water mixture;
and the supporting platform 18 is arranged at the outlet of the gas-water mixer and used for placing the product to be dried.
Further, hot air supply assembly includes: an air storage tank 1 and a heater 3;
the heater 3 is arranged on an air outlet pipe of the air storage tank 1 and used for heating the flowing-out gas to form hot air.
Wherein, the gas storage tank 1 is a pressure container with the volume range of 0.5Nm3-3Nm3The upper limit of the pressure bearing range is 5MPa-10MPa, and the gas in the gas storage tank 1 is preferably air.
An air inlet 4 is arranged on the air storage tank 1, and the air inlet 4 can be connected with an output pipeline of an air compressor and also can be connected with a fixed air source pipeline.
The gas storage tank 1 is also provided with a safety relief valve 5 for improving the safety factor.
In addition, a stop valve I6 is arranged on an air outlet pipeline of the air storage tank 1, the stop valve I6 is a pneumatic valve or an electromagnetic valve, and the flowing and continuous sweeping and drying time of the air in the air storage tank 1 can be controlled through an automatic control program.
Further, in order to control the flow rate of the gas flowing out of the gas storage tank 1, the gas outlet pipe of the gas storage tank 1 is provided with a gas flow controller 2.
Preferably, the range of the airflow controller 2 is 0.1Nm3/min-10Nm3/min。
Further, a first temperature sensor 7 and a control module are arranged in the heater 3;
a first temperature sensor 7 for detecting the temperature of the gas heated by the heater 3;
and the control module is used for controlling the temperature detected by the first temperature sensor 7.
The heater 3 is preferably an electric heater having a power range of 3kW to 100 kW.
Further, the water supply assembly includes: a water storage tank 8, a water pump 9 and an atomizer 10;
the water pump 9 is arranged on a water outlet pipeline of the water storage tank 8 and is used for pumping out water in the water storage tank 8;
the atomizer 10 is positioned in the gas-water mixer, a water outlet pipeline of the water pump 9 passes through the cavity wall of the gas-water mixer to be connected with an inlet of the atomizer 10, and the atomizer 10 atomizes water flowing out of a water outlet pipe to form atomized water.
Wherein the volume of the water storage tank 8 is 0.3Nm3-1Nm3The upper limit range of the pressure bearing is 1MPa-3 MPa.
The water storage tank 8 is provided with a water inlet 11, and the water inlet 11 can be connected with a fixed water source pipeline.
The water storage tank 8 is also provided with an emergency water outlet 12 for improving the safety factor.
A stop valve II 13 is arranged between a water outlet pipeline of the water storage tank 8 and the water pump 9, the stop valve II 13 is a pneumatic valve or an electromagnetic valve, and the flow and the continuous supply time of water in the air storage tank 1 can be controlled through an automatic control program.
Further, the gas-water mixer comprises a cavity 14 and a spoiler 15 arranged in the cavity 14;
a turbulence generator 15 is provided at the outlet of the atomizer 10 for mixing the hot air and the atomized water to form a gas-water mixture.
Wherein, the spoiler 15 is a porous medium, and the inside of the spoiler contains irregular pore channels; further, the spoiler 15 is an alumina foam porous medium with an integral structure, and the inside of the spoiler contains millimeter-scale irregular pore channels.
As shown in fig. 2, the turbulence generator 15 is preferably a cylindrical alumina ceramic foam containing a large number of irregular macro pores in millimeter order to ensure sufficient mixing of air and water mist.
Further, the gas-water mixer further comprises: a first straight pipe 16 and a second temperature sensor 17, wherein the first straight pipe 16 is arranged at the outlet of the cavity 14 and is used for guiding the gas-water mixture to the product to be dried on the supporting platform 18;
a second temperature sensor 17 is arranged on the first straight pipe 16 for measuring the temperature of the gas-water mixture.
Further, the supporting platform 18 is arranged at an outlet of the gas-water mixer, the supporting platform 18 is provided with an opening, a supporting clamp 19 is arranged in the opening, an inflatable air bag is arranged on the hole wall of the supporting clamp 19, and the supporting clamp is used for clamping a product to be dried. By arranging the inflatable air bag, the stability and the immobility of the product to be dried can be ensured.
Preferably, the support platform 18 is cylindrical and has a height of 50mm to 100 mm; the center of the supporting platform 18 is provided with a square hole or a round hole, wherein the side length of the square hole is 50mm-500mm, the diameter of the round hole is 50mm-500mm, and the specific size is determined according to the size of the product to be dried.
Further, the drying apparatus of the present invention further comprises: a fairing;
as shown in fig. 3, the fairing comprises an expansion pipe 20 and a second straight pipe 21, wherein the inlet of the expansion pipe 20 is connected with the outlet of the gas-water mixer, and the outlet of the second straight pipe 21 is connected with the supporting platform 18;
a rectifying distributor 22 is arranged in the expanding pipe 20 and is used for rectifying and distributing the gas-water mixture flowing out of the gas-water mixer and then guiding the gas-water mixture to the product to be dried on the supporting platform 18.
Preferably, the expanding tube 20 is a conical expanding tube, and the length of the conical expanding tube is 50mm-200 mm; preferably, the second straight pipe 21 is a cylindrical straight pipe, the length of the cylindrical straight pipe is 100mm-500mm, and the diameter of the cylindrical straight pipe is 100mm-600 mm.
Further, the rectifying distributor 22 is a single-layer, double-layer or multi-layer flow guiding grid plate, and the flow guiding grid plate is provided with openings.
Specifically, the rectifying distributor 22 may be installed with only one flow guiding grid plate, or may be formed by combining a plurality of flow guiding grid plates, and the installation number and the installation position of the flow guiding grid plates are determined according to specific requirements. The flow guiding grid of the rectifying distributor 22 may be any one of square, semi-circular or circular, and the flow guiding grid is provided with openings, which may be strip-shaped or circular.
Preferably, a cylindrical straight pipe at the upper part of the fairing is connected with the supporting platform 18, and the diameter of the cylindrical straight pipe is 100mm smaller than that of the supporting platform 18.
According to the drying equipment provided by the invention, hot air is provided through the arranged hot air supply assembly, atomized water is provided through the water supply assembly, hot air and atomized water are mixed through the air-water mixer to form an air-water mixture, and then the air-water mixture is used for drying a to-be-dried product placed on the supporting platform 18. The invention can provide hot air with the flow rate of 0.3-20 m/s, the relative humidity of 25-95% and the temperature of 35-150 ℃. According to the invention, the slurry coating loaded on the honeycomb metal substrate is dried by hot air with certain humidity, so that the shrinkage stress caused by the difference of the drying rates of the surface of the coating and the inside of the coating in the drying process of the slurry coating can be effectively relieved, and the probability of cracks on the surface of the coating is avoided or reduced.
The drying equipment provided by the invention has the following working procedures:
firstly, air in an air storage tank 1 enters a heater 3 through an airflow controller 2 for preheating, the temperature of the heater 3 is controlled by a first temperature sensor 7, and then the air enters a cavity 14; meanwhile, water in the water storage tank 8 enters the cavity 14 through the water pump 9, is atomized by the atomizer 10, meets the preheated air in the opposite direction, is fully mixed by the spoiler 15, monitors the temperature of the gas-water mixture through the second temperature sensor 17 arranged at the upper end of the first straight pipe 16, then enters the rectification gas hood for rectification distribution, and finally, the uniformly distributed gas-water mixture dries the product to be dried clamped on the supporting platform 18.
The temperature of the hot air is adjusted and controlled by the heater 3 and the first temperature sensor 7, the relative humidity of the air-water mixture is adjusted by controlling the water flow through the water pump 9, and the temperature of the air-water mixture is monitored by the second temperature sensor 17. The drying equipment can provide hot air with the flow rate of 0.3-20 m/s, the relative humidity of 25-95% and the temperature of 35-150 ℃.
The invention also provides an application of any one of the drying devices, wherein the drying device is used for drying the carrier coating slurry coated on the honeycomb metal substrate.
The invention is further illustrated below:
example 1:
preparation of washcoat slurry: selecting 400cpsi cylindrical honeycomb metal matrix with the size of
The alumina slurry coating is loaded by a slurry coating method, the loading amount of the coating is about 15% of the mass of the honeycomb metal substrate, the drying device is adopted for drying treatment, and the sample is marked as Example-1.
Drying process parameters are as follows: the temperature was 90 ℃, the relative humidity was 85%, and the drying time was 15 minutes.
Example 2:
preparation of washcoat slurry: as in Example 1, the sample was labeled as Example-2.
Drying process parameters are as follows: the temperature was 90 ℃, the relative humidity was 60%, and the drying time was 15 minutes.
Example 3
Preparation of washcoat slurry: as in Example 1, the sample was labeled as Example-3.
Drying process parameters are as follows: the temperature was 90 ℃, the relative humidity was 35%, and the drying time was 15 minutes.
Comparative example 1:
preparation of washcoat slurry: as in example 1, the sample was labeled Comparison-1.
Drying process parameters are as follows: the temperature was 90 ℃, the relative humidity was 0%, and the drying time was 5 minutes.
The invention adopts an ultrasonic oscillation method to test the coating firmness of the metal wall-carried catalyst. The samples were sonicated for 3 hours in a deionized water medium using a relatively powerful CQX25-24 sonicator (Shanghai Binton ultrasound Co., Ltd., 1000W, 25kHz) and the washcoat delamination rate calculated as follows:
wherein psi is carrier coating ultrasonic shedding rate, X0Is a mass of a honeycomb metal matrix, X1The total mass X of the honeycomb metal matrix and the carrier coating before ultrasonic treatment2The total mass of the honeycomb metal matrix and the carrier coating after ultrasonic treatment.
When the firmness of the coating layer of the honeycomb metal prepared by the methods of examples 1 to 3 and comparative example 1 is measured by an ultrasonic oscillation method, it can be seen from the results of table 1 that the relative humidity of hot air has a significant effect on the ultrasonic peeling rate of the sample. In each embodiment, hot air with certain humidity is used for drying, the ultrasonic shedding rate of the sample is reduced along with the increase of the relative humidity, and when the relative humidity is more than 60%, the shedding rate of the sample after being subjected to ultrasonic treatment for 3 hours can be controlled to be less than 2%. The relative humidity of hot air in comparative example 1 was zero, and the ultrasonic exfoliation rate of the sample was 10.63%, which is much higher than the samples in the examples.
TABLE 1 coating peeling off rate after ultrasonic vibration of each sample of examples and comparative examples of the present invention
| Name of sample | Relative humidity/%) | Coating peeling off rate/%) |
| Example-1 | 85 | 1.23 |
| Example-2 | 60 | 1.81 |
| Example-3 | 35 | 3.57 |
| Comparison-1 | 0 | 10.63 |
The above description is only for the purpose of illustrating the present invention and is not intended to limit the present invention in any way, and the present invention is not limited to the above description, but rather should be construed as being limited to the scope of the present invention.
Claims (9)
1. Use of a drying apparatus for drying a washcoat slurry applied to a honeycomb metal substrate;
the apparatus comprises:
the hot air supply assembly is used for providing hot air;
the water supply assembly is used for providing atomized water;
the air-water mixer is arranged at the outlets of the hot air supply assembly and the water supply assembly and is used for mixing the hot air and the atomized water to form an air-water mixture;
the supporting platform is arranged above the outlet of the gas-water mixer and used for placing a product to be dried;
The drying equipment provides hot air with the flow speed of 0.3-20 m/s, the relative humidity of 25-95% and the temperature of 35-150 ℃.
2. The use of claim 1, wherein the hot air supply assembly comprises: a gas storage tank and a heater;
the heater is arranged on the air outlet pipe of the air storage tank and used for heating the flowing-out gas to form hot air.
3. The use of claim 2, wherein a first temperature sensor and control module are disposed within the heater;
the first temperature sensor is used for detecting the temperature of the gas heated by the heater;
the control module is used for controlling the temperature detected by the first temperature sensor.
4. The use of claim 1, wherein the water replenishment assembly comprises: a water storage tank, a water pump and an atomizer;
the water pump is arranged on a water outlet pipeline of the water storage tank and is used for pumping out water in the water storage tank;
the atomizer is positioned in the gas-water mixer, a water outlet pipeline of the water pump penetrates through the cavity wall of the gas-water mixer to be connected with an inlet of the atomizer, and the atomizer atomizes water flowing out of the water outlet pipe to form atomized water.
5. The use according to claim 4, wherein the gas-water mixer comprises a cavity and a flow disrupter disposed within the cavity;
the turbulence generator is arranged at the outlet of the atomizer and is used for mixing hot air and atomized water to form a gas-water mixture.
6. Use according to claim 5, wherein the gas-water mixer further comprises: a first straight pipe and a second temperature sensor;
the first straight pipe is arranged at an outlet of the cavity and used for guiding the gas-water mixture to the product to be dried on the supporting platform;
the second temperature sensor is arranged on the first straight pipe and used for measuring the temperature of the gas-water mixture.
7. The use according to claim 1, wherein the support platform is arranged at the outlet of the gas-water mixer, the support platform is provided with an opening, a support clamp is arranged in the opening, and the wall of the opening of the support clamp is provided with an inflatable air bag;
the supporting clamp is used for clamping the article to be dried.
8. The application of claim 1, wherein the device further comprises: a fairing;
the rectifying gas hood comprises an expansion pipe and a second straight pipe, the inlet of the expansion pipe is connected with the outlet of the gas-water mixer, and the outlet of the second straight pipe is connected with the supporting platform;
And a rectification distributor is arranged in the expansion pipe and used for rectifying and distributing the gas-water mixture flowing out of the gas-water mixer and then guiding the gas-water mixture to the product to be dried on the supporting platform.
9. The use according to claim 8, wherein the rectifying distributor is a single-layer, double-layer or multi-layer flow guiding grid provided with openings.
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| JP2016186413A (en) * | 2015-03-27 | 2016-10-27 | パナソニックＩｐマネジメント株式会社 | Bathroom ventilation dryer machine |
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| CN109908968A (en) * | 2017-12-13 | 2019-06-21 | 中国科学院大连化学物理研究所 | The blowing device of honeycomb ceramic integral catalyzer is prepared based on slurry cladding process |
| CN110360815A (en) * | 2019-07-23 | 2019-10-22 | 中国农业大学 | A kind of hot wind of Temperature and Humidity Control and vacuum impulse combined drying method and equipment |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6291018B1 (en) * | 1999-11-15 | 2001-09-18 | Ppg Industries Ohio, Inc. | Method for applying a composite coating having a polychromatic effect onto a substrate |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016186413A (en) * | 2015-03-27 | 2016-10-27 | パナソニックＩｐマネジメント株式会社 | Bathroom ventilation dryer machine |
| CN106839663A (en) * | 2017-02-09 | 2017-06-13 | 陕西科技大学 | A kind of gas impact hot blast and vacuum impulse vacuum combination drying means and equipment |
| CN107270663A (en) * | 2017-06-27 | 2017-10-20 | 合肥市老海新材料有限公司 | The drying equipment and its drying means of a kind of temperature and humidity control |
| CN109908968A (en) * | 2017-12-13 | 2019-06-21 | 中国科学院大连化学物理研究所 | The blowing device of honeycomb ceramic integral catalyzer is prepared based on slurry cladding process |
| CN110360815A (en) * | 2019-07-23 | 2019-10-22 | 中国农业大学 | A kind of hot wind of Temperature and Humidity Control and vacuum impulse combined drying method and equipment |
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