Sublimation device and use method thereof

Abstract

The invention provides a sublimation device and a use method thereof, and aims to solve the problem of blockage caused by easy recrystallization of sublimation materials in a pipeline in the prior art. The device comprises a main body sublimation tank, a washing pipeline and a heating jacket. A sublimation chamber is arranged in the main sublimation tank, and a feed port and a discharge port are formed in the top of the main sublimation tank; the washing pipeline is arranged in the sublimation chamber in a penetrating manner; and the heating jacket is connected with preheated carrier gas through a pipeline. During use, sublimation materials and preheated carrier gas are conveyed in a mixed mode, and the sublimation materials are effectively prevented from recrystallizing to block an outlet pipeline. And when the work is abnormal or the reaction is finished, the heating jacket branch valve is closed, meanwhile, the flushing pipeline valve is kept to be opened, and the flushing branch is closed after the residual gaseous sublimation material is flushed cleanly, so that the residual sublimation material is further prevented from blocking the pipeline. The device is simple in structure, convenient to operate and suitable for the fields of chemical engineering, pharmacy, material science and the like.

Description

Technical Field

[0001] The present invention relates to a device for material sublimation in the fields of chemical engineering, pharmaceuticals, materials science, etc., and particularly to a sublimation device that can effectively prevent the sublimated material from blocking the outlet pipeline. Background Art

[0002] In the fields of chemical engineering, pharmaceuticals, and materials science, sublimation is a common physical process used for purification, separation, or preparation of specific compounds. Traditional sublimation devices usually include a sublimation chamber where the material is heated and directly transformed from a solid state to a gaseous state, and then transported through a pipeline to a condensation device for collection. However, this traditional device has a significant defect: the sublimated material is prone to recrystallization in the pipeline, resulting in pipeline blockage. Once blockage occurs, it will not only affect production efficiency but also may damage the equipment, increasing maintenance costs and downtime.

[0003] To solve this problem, prior art attempts to reduce the recrystallization of sublimated material by increasing the pipeline temperature or the gas flow rate inside the pipeline. However, these methods either consume too much energy or are difficult to effectively prevent blockage. Therefore, developing a sublimation device that can effectively prevent the sublimated material from blocking the outlet pipeline has important practical significance. Summary of the Invention

[0004] The present invention aims to provide a sublimation device that can effectively prevent the sublimated material from recrystallizing and blocking in the outlet pipeline, improve production efficiency, and reduce equipment maintenance costs.

[0005] The sublimation device of the present invention is characterized in that it includes: 1) A main sublimation tank, in which a sublimation chamber is provided. The top of the sublimation chamber is provided with a feed inlet and a discharge outlet. The feed inlet is sealed by a flange, and the discharge outlet leads to a reactor; 2) A flushing pipeline, at least a part of which is arranged in the sublimation chamber; a flushing control valve is provided on the flushing pipeline; 3) A heating jacket, connected to a preheated carrier gas through a pipeline; a heating jacket control valve is provided on the pipeline; 4) Among them, the heating jacket and the flushing pipeline share a set of preheated carrier gas gas sources; 5) A controller for connecting and adjusting the flushing control valve and the heating jacket control valve.

[0006] Furthermore, the inlet end of the flushing pipeline is connected to the preheated carrier gas gas source, and the pipeline inlet end of the heating jacket is also connected to the preheated carrier gas gas source.

[0007] Furthermore, the preheated carrier gas source includes a preheater for preheating the carrier gas to a set temperature and then delivering it to the heating jacket and the flushing pipeline.

[0008] Furthermore, a temperature sensor is provided on the pipeline of the heating jacket for monitoring the temperature of the preheated carrier gas.

[0009] Furthermore, a heat insulation layer is provided on the outer wall of the heating jacket for reducing heat loss.

[0010] Furthermore, a controller is provided outside the sublimation tank, and the opening and closing of the flushing control valve and the heating jacket control valve are automatically controlled and adjusted by the controller.

[0011] A sublimation method using the sublimation device as described above includes the following steps: 1) Add the material into the sublimation chamber from the feed port and seal the feed port through a flange; 2) Introduce the preheated carrier gas into the heating jacket to heat the material in the sublimation chamber, causing the material to sublime; 3) Introduce the preheated carrier gas into the discharge port through the flushing pipeline, mix it with the sublimated gaseous material, and then transport it from the discharge port to the reactor; 4) When an abnormal operation occurs or the reaction ends, close the heating jacket control valve to interrupt the supply of the preheated carrier gas in the jacket layer, and at the same time keep the flushing control valve open. After flushing the remaining gaseous sublimated material clean, then close the flushing branch.

[0012] Furthermore, the temperature of the preheated carrier gas is monitored by a temperature sensor and adjusted through a control valve.

[0013] The working principle of the sublimation device is as follows: During sublimation, the material enters the sublimation chamber from the feed port, is heated and sublimated under the action of the heating jacket, and the sublimated gaseous material is mixed with the preheated carrier gas and then transported from the discharge port to the subsequent device. By mixing and transporting the preheated carrier gas with the sublimated material, it can effectively prevent the sublimated material from recrystallizing and blocking in the pipeline.

[0014] Furthermore, the setting of the flushing pipeline can flush the material in the sublimation chamber to prevent the material from accumulating on the wall of the sublimation chamber, thereby further reducing the risk of recrystallization of the sublimated material.

[0015] In addition, when an abnormal operation occurs or the reaction ends, by closing the heating jacket branch valve to interrupt the supply of the preheated carrier gas in the jacket layer, and at the same time keeping the flushing pipeline valve open, the remaining gaseous sublimated material can be flushed clean and then the flushing branch can be closed, thereby effectively preventing the remaining sublimated material from recrystallizing and blocking the outlet pipeline.

[0016] Beneficial effects

[0017] The beneficial effects of the present invention are as follows: 1. By preheating the carrier gas and transporting it mixed with the sublimated material, it can effectively prevent the sublimated material from recrystallizing and blocking in the pipeline, improving the operation stability and production efficiency of the device.

[0018] 2. The design of the scouring pipeline can prevent the material from accumulating on the wall of the sublimation chamber, further reducing the risk of recrystallization of the sublimated material.

[0019] 3. When the work is abnormal or the reaction ends, by closing the heating jacket branch valve and keeping the scouring pipeline valve open, it can effectively clean the remaining sublimated material, prevent the remaining material from blocking the pipeline, extend the service life of the equipment, and reduce the maintenance cost. Description of the Drawings

[0020] Appendix Figure 1 is a sectional schematic view of an embodiment of the present invention, which includes: sublimation tank 1; sublimation chamber 2; feed inlet 3; discharge outlet 4; scouring pipeline 5; scouring control valve 6; heating jacket 7; control valve 8; preheated carrier gas source 9; preheater 10; temperature sensor 11; heat insulation layer 12; controller 13. Detailed Embodiment

[0021] The present invention will be further described below in conjunction with specific embodiments.

[0022] Embodiment 1: A sublimation device includes a main sublimation tank, a scouring pipeline, and a heating jacket. A sublimation chamber is provided inside the main sublimation tank, and a feed inlet and a discharge outlet are provided at the top of the sublimation chamber. The scouring pipeline passes through the sublimation chamber, and the heating jacket is connected to the preheated carrier gas through a pipeline. During sublimation, the material enters the sublimation chamber from the feed inlet, is heated and sublimated under the action of the heating jacket, and the sublimated gaseous material is mixed with the preheated carrier gas and then transported from the discharge outlet to the subsequent device. When the reaction ends, the heating jacket branch valve is closed, and at the same time, the scouring pipeline valve is kept open, and the remaining gaseous sublimated material is scoured clean before closing the scouring branch.

[0023] Embodiment 2: On the basis of Embodiment 1, the inlet end of the scouring pipeline is connected to a high-pressure gas source, which can provide sufficient scouring force, further improving the scouring effect and preventing the material from accumulating on the sublimation pipeline.

[0024] The above are only the preferred embodiments of the present invention, and all equivalent changes and modifications made according to the scope of the patent application of the present invention shall fall within the scope covered by the present invention.

Claims

1. A sublimation device, characterized in that: include: 1) Main sublimation tank: The main sublimation tank is provided with a sublimation chamber; the top of the sublimation chamber is provided with a feed inlet and a discharge port; the feed inlet is sealed by a flange; the discharge port leads to the reactor; 2) Flushing pipeline: at least a part of which is arranged in the sublimation chamber; a flushing control valve is arranged on the flushing pipeline; 3) Heating jacket: connected to the preheated carrier gas through a pipeline; a heating jacket control valve is provided on the pipeline; 4) The heating jacket and the flushing pipeline share a set of preheating carrier gas source.

2. The sublimation device according to claim 1, characterized in that: The inlet end of the flushing pipeline is connected to the preheating carrier gas source, and the pipeline inlet end of the heating jacket is also connected to the preheating carrier gas source.

3. The sublimation device according to claim 1, characterized in that: The preheated carrier gas source includes a preheater, which is used to preheat the carrier gas to a set temperature and then transport it to the heating jacket and the flushing pipeline.

4. The sublimation device according to claim 1, characterized in that: A temperature sensor is provided on the pipeline of the heating jacket for monitoring the temperature of the preheated carrier gas.

5. The sublimation device according to claim 1, characterized in that: The outer wall of the heating jacket is provided with a heat insulation layer to reduce heat loss.

6. The sublimation device according to claim 1, characterized in that: The sublimation tank is provided with a controller outside, and the flushing control valve and the heating jacket control valve are opened and closed, and the controller realizes automatic control and regulation.

7. A method for sublimation using the sublimation device according to claim 1, characterized in that: The following steps are involved: 1) Add the material into the sublimation chamber from the feed port and seal the feed port with a flange; 2) Introducing the preheated carrier gas into the heating jacket to heat the material in the sublimation chamber to sublime the material; 3) The preheated carrier gas is introduced into the discharge port through the flushing pipe, mixed with the sublimated gaseous material, and then transported from the discharge port to the reactor; 4) In case of abnormal operation or at the end of reaction, close the heating jacket control valve to interrupt the preheating carrier gas supply to the jacket layer, and keep the flushing control valve open to flush out the remaining gaseous sublimation material before closing the flushing branch.

8. The method according to claim 6, characterized in that: The temperature of the preheated carrier gas is monitored by a temperature sensor and adjusted by a control valve.

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