Desublimation device for refining iodine

Abstract

The utility model relates to the field of desublimation devices, particularly discloses a desublimation device for refining iodine, and solves the technical problem that iodine is easy to attach to a heat exchange coil in the use process of the conventional desublimation device for refining iodine, so that the normal operation of a system is influenced. Comprising an inner kettle body which is provided with a cold air inlet pipe, a hot air inlet pipe and a first accommodating cavity; the outer kettle body is arranged on the outer side of the inner kettle body in a sleeving manner, is provided with a liquid inlet pipe and a liquid outlet pipe, and is provided with a second accommodating cavity isolated from the first accommodating cavity; the collecting tank is arranged close to the bottom of the inner kettle body and is provided with a third accommodating cavity which is not communicated with the outside, and the third accommodating cavity is communicated with the first accommodating cavity. According to the desublimation device disclosed by the utility model, structures such as a heat exchange coil pipe in the desublimation device are omitted, and the adhesion of materials in the device is reduced.

Description

Technical Field

[0001] This utility model relates to the field of sublimation technology, and more specifically, to a sublimation device for refining iodine. Background Technology

[0002] A refined iodine sublimation apparatus is a device specifically designed for the separation and purification of iodine from gaseous or liquid mixtures. Utilizing the unique physical property of iodine—its ability to directly transform from a gaseous state to a solid state (i.e., sublimation) under specific temperature conditions without an intermediate liquid stage—it can efficiently and accurately separate iodine from other substances. Specifically, during the refining process, by precisely controlling temperature and other conditions, only iodine undergoes sublimation at the set temperature, transforming into a solid and depositing on a specially designed condensation surface. Other impurities, lacking the same sublimation properties, remain in a gaseous state, thus achieving the effective extraction of high-purity iodine.

[0003] Existing refined iodine sublimators typically introduce a mixed gas and compressed gas source through a three-way gas inlet. Simultaneously, a volute structure guides the cold air to form a top-down rotating airflow. This design not only increases the contact area and time between gases but also promotes thorough mixing of the mixed gas and cold air, improving sublimation efficiency. Furthermore, the sublimator is equipped with heat exchange coils connected to an external coolant circulation system to assist in cooling, ensuring the entire process operates in an ideal low-temperature environment.

[0004] However, in existing technologies, as the sublimation process proceeds, iodine gradually adheres to the heat exchange coils. Over time, these deposits affect heat exchange efficiency. To maintain optimal operating performance, these deposits need to be cleaned periodically, increasing maintenance costs and complexity. Furthermore, for materials with high sublimation points, the three-way inlet design may cause the material to begin sublimating before entering the sublimator, especially during long-term operation. This can lead to gas path blockage and affect the normal operation of the system. Utility Model Content

[0005] The purpose of this invention is to provide a sublimator for refined iodine, which solves the technical problem that iodine easily adheres to the heat exchange coil during the use of current sublimators for refined iodine, affecting the normal operation of the system.

[0006] This utility model provides a sublimation device for refining iodine, comprising: an inner vessel body with a cold air inlet pipe and a hot air inlet pipe, the inner vessel body having a first receiving cavity; an outer vessel body sleeved outside the inner vessel body, with a liquid inlet pipe and a liquid outlet pipe, the outer vessel body having a second receiving cavity isolated from the first receiving cavity; and a collection tank located near the bottom of the inner vessel body, having a third receiving cavity not connected to the outside, the third receiving cavity being connected to the first receiving cavity.

[0007] According to one embodiment of the present invention, the angle between the cold air intake pipe and the hot air intake pipe is set.

[0008] According to one embodiment of the present invention, the bottom of the inner vessel is provided with a first discharge pipe, and the first discharge pipe is provided with a first discharge cover connected by a thread.

[0009] According to one embodiment of the present invention, the bottom of the collection tank is provided with a second discharge pipe, and the second discharge pipe is provided with a second discharge cover connected by a thread.

[0010] According to one embodiment of the present invention, a thermometer for detecting the temperature of the coolant in the second receiving cavity is also provided.

[0011] According to one embodiment of the present invention, the collection tank is equipped with a pressure gauge and a pressure relief valve.

[0012] According to one embodiment of the present invention, the outer vessel body is provided with an ear-type support.

[0013] According to one embodiment of the present invention, both the inner vessel and the collecting tank are provided with enamel linings.

[0014] The technical solution of this utility model has at least the following advantages and beneficial effects:

[0015] This invention discloses a sublimator for refining iodine. Firstly, its integrated design simplifies the equipment structure, eliminating traditional heat exchange plates or fins, enhancing overall sealing, reducing leakage risks, and significantly decreasing the likelihood of iodine adhesion to the heat exchange device. This makes material collection more convenient and facilitates cleaning and maintenance of the reactor. Secondly, by introducing a cold gas inlet pipe positioned at the hot gas inlet pipe, this invention allows for continuous and efficient heat exchange between low-temperature gas and iodine vapor entering from the hot gas inlet pipe within the inner reactor, greatly improving iodine sublimation efficiency. This process ensures that iodine rapidly transforms from a gaseous to a solid state, improving production efficiency and product quality. Thirdly, the first discharge pipe at the bottom of the reactor and the threaded first discharge cover facilitate safe material discharge, simplifying the operation process and helping to maintain system cleanliness and stable operation. Finally, in this invention, iodine vapor and the mixed gas only exchange heat within the reactor, avoiding heat exchange in the piping, effectively reducing pipe blockage caused by iodine sublimation and ensuring long-term reliable operation of the entire system. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of a sublimator for refining iodine provided in Embodiment 1 of this utility model;

[0018] Figure 2 This is a schematic diagram of the structure of a sublimator for refining iodine provided in Embodiment 3 of this utility model;

[0019] icon:

[0020] 100. Inner vessel body; 110. Cold air inlet pipe; 120. Hot air inlet pipe; 130. First discharge pipe;

[0021] 200. Outer vessel body; 210. Liquid inlet pipe; 220. Liquid outlet pipe;

[0022] 300. Collection tank; 310. Second discharge pipe;

[0023] 400. Thermometer;

[0024] 500, Ear-type support. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0026] Example 1

[0027] This utility model provides a sublimator for refining iodine, which eliminates the need for internal heat exchange coils and other structures, thereby reducing the adhesion of materials inside the device.

[0028] Please see Figure 1The sublimation device for refining iodine provided in this embodiment includes: an inner vessel 100, which is provided with a cold air inlet pipe 110 and a hot air inlet pipe 120, and the inner vessel 100 is provided with a first receiving cavity; an outer vessel 200, which is sleeved on the outside of the inner vessel 100, and is provided with a liquid inlet pipe 210 and a liquid outlet pipe 220, and the outer vessel 200 is provided with a second receiving cavity isolated from the first receiving cavity; and a collection tank 300, which is located near the bottom of the inner vessel 100 and is provided with a third receiving cavity that is not connected to the outside, and the third receiving cavity is connected to the first receiving cavity. The device adopts an integrated design, which eliminates traditional heat exchange plates or heat exchange fins and other components, which not only simplifies the equipment structure and enhances the overall sealing performance and reduces the risk of leakage, but also significantly reduces the probability of iodine adhering to the heat exchange device, making material collection more convenient and facilitating the cleaning and maintenance of the reaction vessel.

[0029] In this embodiment, the cold air inlet pipe 110 and the hot air inlet pipe 120 are angled to facilitate a full reaction between the low-temperature gas and iodine vapor during the introduction of the low-temperature gas. This allows for continuous and efficient heat exchange between the low-temperature gas and the iodine vapor entering from the hot air inlet pipe 120 within the inner vessel 100, ensuring that iodine can rapidly transform from a gaseous state to a solid state, thereby improving production efficiency and product quality. In this embodiment, the cold air inlet pipe 110 and the hot air inlet pipe 120 are set at 90 degrees.

[0030] In this embodiment, the bottom of the inner vessel 100 is provided with a first discharge pipe 130, and the first discharge pipe 130 is provided with a threaded first discharge cover, which facilitates the safe discharge of materials and the cleaning and maintenance of the system. Solid iodine is taken out directly from the bottom, which simplifies the operation process and helps to maintain the cleanliness and stable operation of the system.

[0031] In this embodiment, the bottom of the collection tank 300 is provided with a second discharge pipe 310, and the second discharge pipe 310 is provided with a threaded second discharge cover, which makes it convenient for some solid iodine to be safely removed directly from the bottom, simplifying the operation process and helping to maintain the cleanliness and stable operation of the system.

[0032] In this embodiment, a thermometer 400 is also provided for detecting the temperature of the coolant in the second accommodating cavity, so as to monitor the coolant temperature in real time and ensure optimal operating conditions.

[0033] In this embodiment, the collection tank 300 is equipped with a pressure gauge and a pressure relief valve to monitor the internal pressure and prevent overpressure, thus ensuring operational safety.

[0034] In this embodiment, the outer vessel body 200 is provided with an ear-type support 500, which provides stable support and facilitates equipment installation and positioning.

[0035] In this embodiment, the inner vessel 100, the outer vessel 200, and the collection tank 300 are all lined with enamel. Specifically, the parts that come into direct contact with iodine vapor are lined with enamel. As an inert barrier, the enamel layer can effectively prevent iodine and other corrosive substances from corroding the metal substrate, extend the service life of the equipment, and reduce the possibility of iodine and other substances adhering to it. This makes it easy to clean and maintain, and also reduces the risk of material residue.

[0036] In this embodiment, the collection tank 300 is connected to the inner vessel 100 through an inclined connecting pipe, and the height of one end of the connecting pipe connected to the inner vessel 100 is higher than the height of one end connected to the collection tank 300, so that cold air can be introduced into the collection tank 300 by gravity.

[0037] In this embodiment, the collection tank 300 is connected to the exhaust gas absorption device.

[0038] The following is a detailed description of the use of the sublimator for refining iodine in Embodiment 1 of this utility model:

[0039] In use, firstly, coolant is introduced into the second containment cavity to initially cool the material inside the inner vessel 100. At the same time, some cold air is introduced through the cold air inlet pipe 110 to further reduce the temperature inside the inner vessel 100. When the thermometer 400 on the outer vessel 200 shows that the temperature has reached the ideal range for iodine sublimation, iodine vapor mixture is introduced. The iodine vapor mixture enters the inner vessel 100 through the hot gas inlet pipe 120. At the same time, cooling gas is injected simultaneously through the cold gas inlet pipe 110. The two gases come into full contact and exchange heat in the inner vessel 100, causing the iodine vapor to quickly sublimate into a solid and settle to the bottom of the inner vessel 100. The cooling gas after heat exchange is discharged through the pressure relief valve of the collection tank 300 and is safely introduced into the tail gas absorption device for further treatment to ensure environmental compliance. After the material sublimation process is completed, the sublimation product can be safely discharged through the first discharge pipe 130 at the lower end of the inner vessel 100. For the part of the material sublimated in the collection tank 300, it can be discharged through the second discharge pipe 310 at the lower end of the collection tank 300 to ensure that all sublimation products can be effectively recovered.

[0040] Example 2

[0041] This utility model provides a sublimator for refining iodine, which eliminates the need for heat exchange coils inside the sublimator and reduces the adhesion of materials inside the device.

[0042] The sublimator for refining iodine provided in Embodiment 2 of this utility model differs from Embodiment 1 only in that, in this embodiment, an insulating sleeve is also provided outside the outer vessel body 200 to further reduce heat loss.

[0043] Example 3

[0044] This utility model provides a sublimator for refining iodine, which eliminates the need for heat exchange coils inside the sublimator and reduces the adhesion of materials inside the device.

[0045] Please see Figure 2 The sublimator for refining iodine provided in Embodiment 2 of this utility model differs from Embodiment 1 only in that, in this embodiment, there are two collection tanks 300, one of which is connected to the inner vessel 100 and is close to the bottom of the inner vessel 100, and the other is connected to the inner vessel 100 and is close to the middle of the inner vessel 100, so as to ensure complete recovery of gas at different levels.

[0046] The embodiments of this utility model have at least the following advantages:

[0047] This invention discloses a sublimator for refining iodine. Firstly, its integrated design simplifies the equipment structure, eliminating traditional heat exchange plates or fins, enhancing overall sealing, reducing leakage risks, and significantly decreasing the likelihood of iodine adhesion to the heat exchange device. This makes material collection more convenient and facilitates cleaning and maintenance of the reactor. Secondly, by introducing a cold gas inlet pipe positioned at the hot gas inlet pipe, this invention allows for continuous and efficient heat exchange between low-temperature gas and iodine vapor entering from the hot gas inlet pipe within the inner reactor, greatly improving iodine sublimation efficiency. This process ensures that iodine rapidly transforms from a gaseous to a solid state, improving production efficiency and product quality. Thirdly, the first discharge pipe at the bottom of the reactor and the threaded first discharge cover facilitate safe material discharge, simplifying the operation process and helping to maintain system cleanliness and stable operation. Finally, in this invention, iodine vapor and the mixed gas only exchange heat within the reactor, avoiding heat exchange in the piping, effectively reducing pipe blockage caused by iodine sublimation and ensuring long-term reliable operation of the entire system.

[0048] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A desiccator for refining iodine, characterized in that, The utility model relates to a double-walled kettle, comprising: an inner kettle body provided with a cold air inlet pipe and a hot air inlet pipe, the inner kettle body being provided with a first containing cavity; an outer kettle body sleeved outside the inner kettle body and provided with a liquid inlet pipe and a liquid outlet pipe, the outer kettle body being provided with a second containing cavity isolated from the first containing cavity; a collecting groove arranged close to the bottom of the inner kettle body and provided with a third containing cavity not communicated with the outside, the third containing cavity being communicated with the first containing cavity.

2. The desiccator for refining iodine according to claim 1, wherein The cold air inlet pipe and the hot air inlet pipe are arranged at an angle.

3. The desiccator for refining iodine according to claim 1 or 2, characterized by, The bottom of the inner kettle body is provided with a first discharge pipe provided with a screw-connected first discharge cover.

4. The desiccator for refining iodine according to claim 1 or 2, characterized by The bottom of the collecting groove is provided with a second discharge pipe provided with a screw-connected second discharge cover.

5. The desiccator for refining iodine according to claim 1 or 2, characterized by A thermometer for detecting the temperature of the cooling liquid in the second containing cavity is further arranged.

6. The desiccator for refining iodine according to claim 1 or 2, characterized by The collecting groove is provided with a pressure gauge and a pressure relief valve.

7. The desiccator for refining iodine according to claim 1 or 2, characterized by The outer kettle body is provided with an ear-type support.

8. The desiccator for refining iodine according to claim 1 or 2, characterized by The inner kettle body and the collecting groove are both internally provided with an enamel lining.

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