Flash sublimation device for evaporation purification

Abstract

The flash sublimation device comprises a melting kettle, a quantitative feeder is connected to the right side of the top of the melting kettle, a residue storage tank is connected to the bottom of the melting kettle, an evaporator is connected to the center of the top of the melting kettle, and a sublimation gas outlet is formed in the top of the evaporator. The sublimation gas outlet is communicated with a desublimation device through a pipeline, the lower end of the desublimation device is provided with a pure product bin, the outer wall of the pure product bin is connected with a cyclone separator, the top of the cyclone separator is connected with a bag-type dust collector, and the top of the bag-type dust collector is provided with a vacuum system; the sublimation device is reasonable in structural design, greatly shortens the sublimation period, is low in heating temperature, and is suitable for large-scale continuous operation.

Description

Technical Field

[0001] The utility model relates to the technical field of a sublimation device, in particular to a flash sublimation device for evaporation and purification. Background Technique

[0002] Sublimation, microscopically speaking, is the process in which the molecules on the surface of a liquid (crystal) break free from the attraction of other molecules and run outside the liquid (crystal) to become vapor molecules. The sublimation process is, in a sense, an evaporation process. Evaporation is a very common natural phenomenon and a slow and gentle gasification phenomenon that occurs on the surface of a liquid at any temperature.

[0003] The function of stirring is to pick up the liquid state and gasify it, and the purpose of atomization is also to gasify the liquid. The purpose of both is to turn liquid molecules into gas molecules, but the difference between the two is that the liquid molecules lifted during stirring are large and the probability of becoming gas molecules is small; while the liquid molecules during spraying are small and the probability of becoming gas molecules is large.

[0004] Spraying is artificial fog making. Using a high-pressure system, the liquid state is sprayed out in extremely fine water particles, droplets, filaments, and liquid films to reduce the evaporation boiling point. The specific surface area of these tiny artificial fog particles is large, and they can suspend in the air for a long time, become saturated steam under partial atmospheric pressure, and be pulled into sublimation by a vacuum airflow to form refined crystals.

[0005] The traditional sublimation process uses temperature plus stirring. At a suitable temperature point, the saturated liquid is lifted up to form a gas-liquid interface, so that the saturated liquid is atomized into gas. Since the stirring speed cannot reach the effect of centrifugal force, the gasification efficiency is very poor. Therefore, the sublimation process is relatively long, and there is a risk of coking and decomposition during long-term heating, and the yield is very poor. For this reason, we propose a flash sublimation device for evaporation and purification. Content of the Utility Model

[0006] The purpose of the utility model is to provide a flash sublimation device for evaporation and purification to overcome the technical problems existing in the prior art.

[0007] To achieve the above technical purpose and reach the above technical effect, the utility model provides the following technical solution:

[0008] A flash sublimation device for evaporation and purification includes a melting kettle. The right side of the top of the melting kettle is connected with a metering feeder. The bottom of the melting kettle is connected with a residue storage tank. The center of the top of the melting kettle is connected with an evaporator. A sublimation gas outlet is opened at the top of the evaporator. The sublimation gas outlet is communicated with a condenser through a pipeline. A pure product bin is installed at the lower end of the condenser. A cyclone separator is connected to the outer wall of the pure product bin. The top of the cyclone separator is connected with a bag filter. A vacuum system is installed at the top of the bag filter.

[0009] Preferably, in a flash sublimation device for evaporation and purification, an inert gas inlet is provided on the outer wall of the evaporator, an atomizer is arranged inside the evaporator, and a hot liquid circulation pump is connected between the atomizer and the melting kettle through a pipeline.

[0010] Preferably, in a flash sublimation device for evaporation and purification, heating jackets are installed on both the melting kettle and the evaporator, and the heating jackets adopt a semi-circular tube structure.

[0011] Preferably, in a flash sublimation device for evaporation and purification, a level sensor is arranged inside the residue storage tank, valves are installed at the upper and lower ends of the residue storage tank, and the level sensor is electrically connected to the valves.

[0012] Preferably, in a flash sublimation device for evaporation and purification, a heat preservation jacket is installed at the end of the hot liquid circulation pump.

[0013] Preferably, in a flash sublimation device for evaporation and purification, the atomizer specifically adopts a non-blocking spiral atomizer.

[0014] Preferably, in a flash sublimation device for evaporation and purification, a cooling jacket is arranged outside the sublimator, and a spiral ribbon wall scraping pusher is arranged inside the sublimator.

[0015] Preferably, in a flash sublimation device for evaporation and purification, a control system is further included, and the control system is electrically connected to the melting kettle, the residue storage tank, the evaporator, the hot liquid circulation pump, the sublimator, the cyclone separator, the bag filter and the vacuum system.

[0016] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0017] The structure of the present utility model is reasonably designed. In this device, the saturated liquid reaching the sublimation point temperature in the melting kettle enters the atomizer designed in the evaporator through the hot liquid circulation pump, and is turned into partial saturated steam and saturated liquid. The saturated steam among them is the sublimation gas, which can be carried into the sublimator by the vacuum air flow to form crystals. The sublimation cycle of this device is greatly shortened, and the heating temperature is low, which is suitable for large-scale continuous operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the present utility model, the drawings required for use in the following description of the specific embodiments will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0019] Figure 1 It is a schematic structural diagram of the present utility model.

[0020] In the figure: 1. Quantitative feeder; 2. Melting kettle; 3. Residue storage tank; 4. Inert gas inlet; 5. Evaporator; 6. Hot liquid circulation pump; 7. Atomizer; 8. Sublimation gas outlet; 9. Condenser; 10. Pure product bin; 11. Cyclone separator; 12. Bag filter; 13. Vacuum system; 14. Control system. Specific embodiments

[0021] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0022] Please refer to Figure 1 As shown, this embodiment is a flash evaporation and sublimation device for evaporation and purification, including a melting kettle 2. The right side of the top of the melting kettle 2 is connected with a quantitative feeder 1. The bottom of the melting kettle 2 is connected with a residue storage tank 3. The center of the top of the melting kettle 2 is connected with an evaporator 5. A sublimation gas outlet 8 is opened at the top of the evaporator 5. The sublimation gas outlet 8 is communicated with a condenser 9 through a pipeline. A pure product bin 10 is installed at the lower end of the condenser 9. A cyclone separator 11 is connected to the outer wall of the pure product bin 10. The top of the cyclone separator 11 is connected with a bag filter 12. A vacuum system 13 is installed at the top of the bag filter 12.

[0023] An inert gas inlet 4 is opened on the outer wall of the evaporator 5. An atomizer 7 is arranged inside the evaporator 5. A hot liquid circulation pump 6 is communicated between the atomizer 7 and the melting kettle 2 through a pipeline, which is convenient for transporting saturated liquid reaching the sublimation point temperature.

[0024] Heating jackets are installed on both the melting kettle 2 and the evaporator 5. The heating jacket adopts a semi-circular tube structure and belongs to a non-pressure vessel. According to specific circumstances, the melting kettle 2 can be horizontal or vertical.

[0025] A level sensor is arranged inside the residue storage tank 3. Valves are installed at the upper and lower ends of the residue storage tank 3. The level sensor is electrically connected to the valves. The level is controlled by the level sensor and is intelligently interlocked with the upper and lower valves, enabling automatic slag discharge.

[0026] A heat preservation jacket is installed at the end of the hot liquid circulation pump 6, and the protection effect is good.

[0027] The atomizer 7 specifically adopts a non-blocking spiral atomizer, which can smoothly atomize and send out the liquid.

[0028] The sublimator 9 is provided with a cooling jacket on the outside, and a spiral ribbon wall scraping pusher is arranged inside the sublimator 9, which can be horizontal or vertical according to specific conditions.

[0029] It further includes a control system 14, and the control system 14 is electrically connected to the melting kettle 2, the residue storage tank 3, the evaporator 5, the hot liquid circulation pump 6, the sublimator 9, the cyclone separator 11, the bag filter 12 and the vacuum system 13, facilitating the operation control of the components.

[0030] In the description of this specification, the descriptions with reference to terms such as "one embodiment", "example", "specific example", etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0031] The preferred embodiments of the present utility model disclosed above are only used to help explain the present utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the present utility model to the specific embodiments described. Obviously, many modifications and variations can be made according to the content of this specification. These embodiments are selected and specifically described in this specification to better explain the principle and practical application of the present utility model, so that those skilled in the relevant technical field can well understand and utilize the present utility model. The present utility model is only limited by the claims and their full scope and equivalents.

Claims

1. A flash sublimation device for evaporation purification, comprising a melting kettle (2), characterized in that: The right side of the top of the melting kettle (2) is connected to a quantitative feeder (1), the bottom of the melting kettle (2) is connected to a residue storage tank (3), the center of the top of the melting kettle (2) is connected to an evaporator (5), the top of the evaporator (5) is provided with a sublimation gas outlet (8), the sublimation gas outlet (8) is connected to a condenser (9) through a pipeline, the lower end of the condenser (9) is equipped with a pure product bin (10), the outer wall of the pure product bin (10) is connected to a cyclone separator (11), the top of the cyclone separator (11) is connected to a bag dust collector (12), and the top of the bag dust collector (12) is equipped with a vacuum system (13).

2. A flash sublimation device for evaporation purification according to claim 1, characterized in that: An inert gas inlet (4) is provided on the outer wall of the evaporator (5), an atomizer (7) is built into the evaporator (5), and a hot liquid circulation pump (6) is connected between the atomizer (7) and the melting kettle (2) through a pipeline.

3. A flash sublimation device for evaporation purification according to claim 1, characterized in that: The melting kettle (2) and the evaporator (5) are both equipped with a heating jacket, and the heating jacket adopts a semicircular coil structure.

4. A flash sublimation device for evaporation purification according to claim 1, characterized in that: The residue storage tank (3) is provided with a material level sensor, and valves are installed at the upper and lower ends of the residue storage tank (3), and the material level sensor is electrically connected to the valve.

5. A flash sublimation device for evaporation purification according to claim 2, characterized in that: A heat-insulating jacket is installed at the end of the hot liquid circulation pump (6).

6. A flash sublimation device for evaporation purification according to claim 2, characterized in that: The atomizer (7) is specifically a non-clogging spiral atomizer.

7. A flash sublimation device for evaporation purification according to claim 1, characterized in that: The desublimator (9) is provided with a cooling jacket outside and a screw-belt type wall scraping pusher inside.

8. A flash sublimation device for evaporation purification according to claim 2, characterized in that: It also includes a control system (14), wherein the control system (14) is electrically connected to the melting kettle (2), the residue storage tank (3), the evaporator (5), the hot liquid circulation pump (6), the desublimator (9), the cyclone separator (11), the bag filter (12) and the vacuum system (13).

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