CN112742305A - Controller for controlling forming of superfine powder particles - Google Patents
Controller for controlling forming of superfine powder particles Download PDFInfo
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- CN112742305A CN112742305A CN202110099331.5A CN202110099331A CN112742305A CN 112742305 A CN112742305 A CN 112742305A CN 202110099331 A CN202110099331 A CN 202110099331A CN 112742305 A CN112742305 A CN 112742305A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2/00—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic
- B01J2/16—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic by suspending the powder material in a gas, e.g. in fluidised beds or as a falling curtain
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J13/00—Colloid chemistry, e.g. the production of colloidal materials or their solutions, not otherwise provided for; Making microcapsules or microballoons
- B01J13/02—Making microcapsules or microballoons
- B01J13/04—Making microcapsules or microballoons by physical processes, e.g. drying, spraying
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/06—Solidifying liquids
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Abstract
The invention relates to a controller for controlling the forming of ultrafine powder particles, wherein a heat-insulating channel is arranged in the controller, the heat-insulating structure controls the temperature of different areas in an inner-layer channel, the speed of carrier gas passing through each area in the controller is controlled by the design of the speed of the carrier gas and the cross-sectional dimension of a pipeline, a stable and controllable temperature field and a speed field are conditions for forming the ultrafine powder particles, substances to be prepared are changed into liquid from gas state to liquid state, the liquid state is changed into solid state, the gas state is mutually collided and condensed into smaller liquid cores, the smaller liquid cores are mutually collided into larger liquid drops or the gas state is collided with the smaller liquid cores to form larger liquid drops, the larger liquid drops are continuously collided and grown or solidified into solid particles, the smaller liquid cores and the solid particles are combined into larger solid particles or core-shell structures, the gas state is combined with the solid particles into larger solid particles or core-shell structures, thereby preparing particles with expected particle size and morphology.
Description
Technical Field
The invention belongs to the technical field of preparing ultrafine powder particles by using an evaporation and condensation gas phase method, and particularly relates to a controller for controlling the forming of ultrafine powder particles.
Background
When the forming technology for preparing the ultrafine powder particles by using an evaporation condensation gas phase method is used, the required prepared substances are firstly heated and gasified at high temperature, and then solidified and formed in a gas state after passing through a liquid state, because the required prepared ultrafine powder particles are microscopic materials and are mostly nano-scale, submicron-scale or micron-scale powder, the formed particles have small size, the forming speed is very high, the temperature is very high, and the technical principle of forming is simple, but the actual application is very difficult. If powder particles which can be used in batches are required to be prepared, the particle size is uniform, the morphology is stable, the dispersion is good, and the difficulty is higher.
The common method comprises a flaring structure, which slows down the flow speed of steam and then controls the particle formation; or a blowing cooling structure to rapidly cool the steam. The two methods are either uneven temperature of the inner layer and the outer layer of the airflow or uneven flow state of the inner layer caused by air blowing and air inlet, which can cause a large amount of ultra-small and ultra-large particles, the quality of the powder is poor, and the subsequent use of the ultra-fine powder is seriously influenced.
Disclosure of Invention
The invention aims to provide a controller for controlling the forming of ultrafine powder particles, which is used for solving the problems that the temperature of the inner layer and the outer layer of an airflow of steam in the prior art is not uniform, or the flow state in the inner layer is not uniform due to air blowing and air admission, so that a large amount of ultra-small and ultra-large particles are generated, the quality of powder is poor, and the subsequent use of the ultra-fine powder is seriously influenced.
The invention is realized by the following technical scheme:
a controller for controlling the forming of superfine powder particles is characterized in that the front end of the controller is connected with a preorder matching device, and the rear end of the controller is connected with a postorder matching device; the controller comprises an outer shell structure, a middle heat insulation layer and an inner heat conduction layer;
the outer shell structure is a jacket structure, and a coolant is used for flowing through the jacket structure;
the middle heat-insulating layer is of a single-layer or multi-layer structure;
the inner heat conduction layer forms a heat-insulating channel and is used for indirectly controlling the temperature of a substance circulating in the channel in a heat conduction or heat radiation mode.
Preferably, the inner cavity of the channel is connected with the inner cavity of the preorder matching device and the inner cavity of the postorder matching device; the inner shape and the inner diameter of the inner cavity of the preorder matching device, the inner shape and the inner diameter of the inner cavity of the channel and the inner shape and the inner diameter of the inner cavity of the postorder matching device are the same or similar, or different in inner shape or different in inner diameter.
Preferably, when the inner cavities of the two-way valve are different in inner shape or different in inner diameter, the connecting parts of the inner cavities of the two-way valve are in stepped connection or gentle deformation connection, or the inner cavity of the channel is a transfer deformation body of the inner shape and the inner diameter of the inner cavity of the preceding matching device or the inner cavity of the following matching device.
Preferably, the inner cavity of the outer shell structure is connected with the inner cavity of the shell of the preceding matching device and the inner cavity of the shell of the subsequent matching device; the inner shape and the inner diameter of the inner cavity of the shell of the preorder matching device, the inner shape and the inner diameter of the inner cavity of the outer shell structure and the inner shape and the inner diameter of the inner cavity of the shell of the postorder matching device are the same or similar or different in inner shape or different in inner diameter.
Preferably, when the inner shape or the inner diameter is different, the connection part of the inner cavity is in stepped connection or gentle deformation connection, or the inner cavity of the outer shell is a transfer deformation body of the inner shape and the inner diameter of the inner cavity of the shell of the preceding matching device or the inner cavity of the shell of the subsequent matching device.
Preferably, the intermediate heat-insulating layer is of a single-layer or multi-layer structure.
Preferably, the channel is respectively connected with the preorder matching device and the postorder matching device, and a primary-secondary port clamping sleeve and a limiting part are arranged at the joint part to prevent backflow liquid from flowing out of the pipeline.
Preferably, the channel is formed by splicing a plurality of sections, or is a functional section in an integrated structure with the preceding matching device or the following matching device.
Preferably, the material of the inner heat conducting layer is a combination of one or more temperature-resistant materials.
Preferably, a heating device is arranged outside the channel, and the heating device is a heating pipe, medium-frequency heating, resistance heating, electromagnetic heating or hot liquid pipe heating.
The invention has the beneficial effects that:
the invention relates to a controller for controlling the forming of ultrafine powder particles, wherein a heat-insulating channel is arranged in the controller, a heat-insulating structure controls the temperature of different areas in an inner-layer channel, the speed of carrier gas passing through each area in the controller is controlled by the design of the carrier gas speed and the cross-sectional dimension of a pipeline, a stable and controllable temperature field and speed field form the forming condition of the ultrafine powder particles, so that substances to be prepared are changed from a gas state to a liquid state, the liquid state is changed into a solid state, the gas state is mutually collided and condensed into smaller liquid cores, the smaller liquid cores are mutually collided and connected into larger liquid drops or the gas state is collided and combined with the smaller liquid cores into larger liquid drops, the larger liquid drops are continuously collided and grown or solidified into solid particles, the smaller liquid cores and the solid particles are combined into larger solid particles or into a core-shell structure, the gas state and the, thereby preparing particles with expected particle size and morphology.
Drawings
FIG. 1 is a schematic diagram of a controller for controlling the formation of ultrafine particles according to the present invention.
Description of the reference numerals
1. Outer shell structure, 2, middle heat preservation, 3, inlayer heat transfer layer, 4, the inlet end of superfine powder material and carrier gas mixture, 5, the exit end of superfine powder material and carrier gas mixture, 6, the structure of being connected with preface matching device, 7, the structure of being connected with preface matching device, 8, coolant import, 9, coolant outlet, 10, heater import, 11, heater export.
Detailed Description
The technical solutions of the present invention are described in detail below by examples, and the following examples are only exemplary and can be used only for explaining and explaining the technical solutions of the present invention, but not construed as limiting the technical solutions of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the referred devices or elements must have specific orientations, be constructed in specific orientations, and be operated, and thus are not to be construed as limiting the present invention, and furthermore, the terms "first", "second", and "third" are only used for descriptive purposes and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
As shown in fig. 1, the present application provides a controller for controlling the formation of ultra-fine powder particles, wherein the front end of the controller is connected with a preceding matching device, in this embodiment, connected with the gas outlet of a metal vapor generating device at the front end, and the rear end of the controller is connected with a following matching device, in this embodiment, connected with the gas inlet of a collector is selected, in other embodiments of the present application, the controller can also be connected with other devices capable of matching, and a detailed description is omitted here.
The controller comprises an outer shell structure 1, a middle heat insulation layer 2 and an inner heat conduction layer 3 from outside to inside in sequence, and the inner heat conduction layer forms a channel for passing through a mixture of the superfine powder substance and the carrier gas to be prepared.
Outer shell structure is jacket structure, comprises inlayer casing and outer casing, is used for letting in the coolant between inlayer casing and the outer casing, on the outer casing, is provided with coolant import 8 and coolant outlet 9, and the coolant import is connected with coolant feed liquor pipe, and the coolant outlet is connected with the coolant back flow. In the present application, the coolant may be a liquid coolant or a gas coolant, wherein a liquid coolant such as water, liquid nitrogen, or the like that can be used for the coolant may be used; gaseous coolants such as the same materials as the carrier gas, or other inert gases, etc., water is preferred as the coolant from a cost and convenience standpoint.
The front end of the outer shell is provided with a structure 6 for connecting with a front-end matching device, such as a flange, a quick connector or other structures for connection. At the rear end of the outer shell, a structure 7 is provided for connection with a subsequent mating device, such as a flange, a quick connector or other structure for connection.
Be provided with the opening that is used for connecting middle heat preservation on outer casing, including heater import 10 and heater export 11 for through the device to middle heat preservation heating, this opening is circular telegram opening or leads to liquid opening or the opening of ventilating, is used for heating the use for middle heat preservation.
The middle heat-insulating layer is of a single-layer or multi-layer structure. When the structure is a multilayer structure, various materials can be used in combination, for example, the structure can be made of heat-insulating or temperature-resistant felt materials, porous honeycomb structure heat-insulating or heat-resistant materials and the like, and the structure can also be a multilayer structure made of one or more of heat-insulating or temperature-resistant materials. The good matching degree of the outer wall of the heat-insulating layer and the structure of the shell is kept, and the good matching of the inner wall of the heat-insulating layer and the inner heat-conducting layer is kept so as to fix the position of the inner heat-conducting layer.
Inner strata heat conduction layer for the temperature of the material that circulates in the passageway carries out indirect control through heat conduction or heat radiation mode, the more stable different temperature zone that comes out through the construction provides the condition for the stable shaping of the superfine powder particle of the material of required preparation, avoid because the material melting point and the boiling point temperature of required preparation are higher, directly let in other cooling gas and cool off and can form the rapid cooling vortex, cause the unstability in temperature zone and the unstability of flow state, the size of the superfine powder particle and appearance of preparing are difficult to control.
In other embodiments of the present application, the structure of the inner heat conducting layer may be a multi-section splice, or may be the functional section in the structure integrated with the preceding matching device or the following matching device, and the material of the inner heat conducting layer conduit may be a combination of one or more temperature-resistant materials.
In order to maintain and control the temperature of the inner cavity of the inner pipeline, a heating device can be additionally arranged outside the inner pipeline, and the heating device can be a heating pipe, a medium-frequency heating method, a resistance heating method, an electromagnetic heating method, a hot liquid pipe heating method and other various heating methods, so that the temperature of different areas in a temperature field can be controlled through heating.
In this embodiment, the inner cavity of the passage is connected to the inner cavity of the preorder matching device and the inner cavity of the postorder matching device, and the shape and the inner diameter of the inner cavity of the preorder matching device, the shape and the inner diameter of the inner cavity of the passage, and the shape and the inner diameter of the inner cavity of the postorder matching device are the same or similar, or the shape and the inner diameter of the inner cavities of the three parts are different, if the inner cavities and the inner diameters of the three parts are different, the connection part of the inner cavities is in stepped connection or gentle deformation connection, or the inner cavity of the passage is a transfer deformation body of the inner shape and the inner diameter of the inner cavity of the preorde.
In the embodiment of the application, the inner cavity of the outer shell structure is connected with the inner cavity of the shell of the preceding matching device and the inner cavity of the shell of the subsequent matching device; the inner shape and the inner diameter of the inner cavity of the shell of the preorder matching device, the inner shape and the inner diameter of the inner cavity of the outer shell structure and the inner shape and the inner diameter of the inner cavity of the shell of the postorder matching device are the same or similar or different in inner shape or different in inner diameter. If the inner shape or the inner diameter is different, the connecting part of the inner cavity is in stepped connection or gentle deformation connection, or the inner cavity of the outer shell is the inner cavity of the shell of the preorder matching device or the transfer deformation body of the inner shape and the inner diameter of the inner cavity of the shell of the postorder matching device.
The channel is respectively connected with the preorder matching device and the postorder matching device, and a primary-secondary port clamping sleeve and a limiting part are arranged at the joint to prevent backflow liquid from flowing out of the pipeline.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. A controller for controlling the forming of superfine powder particles is characterized in that the front end of the controller is connected with a preorder matching device, and the rear end of the controller is connected with a postorder matching device; the controller comprises an outer shell structure, a middle heat insulation layer and an inner heat conduction layer;
the outer shell structure is a jacket structure, and a coolant is used for flowing through the jacket structure;
the middle heat-insulating layer is of a single-layer or multi-layer structure;
the inner heat conduction layer forms a heat-insulating channel and is used for indirectly controlling the temperature of a substance circulating in the channel in a heat conduction or heat radiation mode.
2. The controller for controlling the formation of ultra-fine powder particles as set forth in claim 1, wherein the inner cavity of the passage is connected to the inner cavity of the preceding engaging means and the inner cavity of the succeeding engaging means; the inner shape and the inner diameter of the inner cavity of the preorder matching device, the inner shape and the inner diameter of the inner cavity of the channel and the inner shape and the inner diameter of the inner cavity of the postorder matching device are the same or similar, or different in inner shape or different in inner diameter.
3. The controller for controlling the formation of ultra-fine powder particles as set forth in claim 2, wherein the connection point of the inner cavities is a step-shaped connection, a gently deformed connection, or the inner cavity of the passage is a transition deformation body of the inner shape and the inner diameter of the inner cavity of the preceding or following engagement device, when the inner shapes or the inner diameters are different.
4. The controller for controlling the formation of ultra-fine powder particles as set forth in claim 1, wherein the inner cavity of the outer shell structure is connected with the inner cavity of the shell of the preceding engaging means and the inner cavity of the shell of the succeeding engaging means; the inner shape and the inner diameter of the inner cavity of the shell of the preorder matching device, the inner shape and the inner diameter of the inner cavity of the outer shell structure and the inner shape and the inner diameter of the inner cavity of the shell of the postorder matching device are the same or similar or different in inner shape or different in inner diameter.
5. The controller for controlling the formation of ultrafine particles according to claim 4, wherein the connection point of the inner cavities is a step-shaped connection or a gentle deformation connection when the inner cavities have different inner shapes or different inner diameters, or the inner cavity of the outer shell is a transfer deformation body of the inner shape and the inner diameter of the inner cavity of the shell of the preceding or subsequent matching device.
6. The controller for controlling the formation of ultrafine particles according to claim 1, wherein the intermediate insulating layer has a single-layer or multi-layer structure.
7. The controller for controlling the formation of ultra-fine powder particles as claimed in claim 1, wherein the passage is connected with the preceding matching device and the following matching device respectively, and a snap-fit sleeve and a limit are arranged at the connection position to prevent backflow liquid from flowing out of the pipeline.
8. The controller for controlling the formation of ultrafine particles according to claim 1 or 7, wherein the channel is formed by splicing multiple sections or is a functional section in a structure integrated with a preceding matching device or a following matching device.
9. The controller of claim 1, wherein the material of the inner thermally conductive layer is a combination of one or more temperature resistant materials.
10. The controller for controlling the formation of ultrafine particles according to claim 1, wherein a heating device is disposed outside the channel, and the heating device is a heating tube, a medium frequency heating, a resistance heating, an electromagnetic heating or a hot liquid tube heating.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110099331.5A CN112742305A (en) | 2021-01-25 | 2021-01-25 | Controller for controlling forming of superfine powder particles |
| PCT/CN2021/116967 WO2022156229A1 (en) | 2021-01-25 | 2021-09-07 | Controller for controlling formation of ultrafine powder particles |
| TW111102264A TWI853206B (en) | 2021-01-25 | 2022-01-19 | Controller for controlling the formation of ultrafine powder particles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110099331.5A CN112742305A (en) | 2021-01-25 | 2021-01-25 | Controller for controlling forming of superfine powder particles |
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| Publication Number | Publication Date |
|---|---|
| CN112742305A true CN112742305A (en) | 2021-05-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110099331.5A Pending CN112742305A (en) | 2021-01-25 | 2021-01-25 | Controller for controlling forming of superfine powder particles |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022156229A1 (en) * | 2021-01-25 | 2022-07-28 | 钟笔 | Controller for controlling formation of ultrafine powder particles |
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2021
- 2021-01-25 CN CN202110099331.5A patent/CN112742305A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022156229A1 (en) * | 2021-01-25 | 2022-07-28 | 钟笔 | Controller for controlling formation of ultrafine powder particles |
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