Hafnium tetrachloride gas purification device

Abstract

The utility model discloses a hafnium tetrachloride gas purification device which comprises a box body, a heating assembly, a feeding assembly, a discharging assembly and a condensing assembly, the feeding assembly and the discharging assembly are both arranged on the box body, the condensing assembly is communicated with the box body, and the heating assembly is arranged on the box body. The box body is detachably nested in the heating assembly, and a dehumidifier is arranged between the box body and the condensation assembly. According to the invention, the heating assembly is detachably arranged, so that the heating assembly can be conveniently detached to be replaced or maintained.

Description

Technical Field

[0001] The utility model relates to the technical field of purification devices, in particular to a hafnium tetrachloride gas purification device. Background Art

[0002] Hafnium tetrachloride, colorless crystal, melting point 320℃, inorganic compound, chemical formula HfCl4. This colorless solid is the precursor of most organic hafnium compounds. It can be used for a variety of specific purposes, mainly in materials science, or as a catalyst. It can react strongly with water, has strong hygroscopicity, and is very easy to hydrolyze. The method of preparing hafnium tetrachloride is to add hafnium oxide into a chlorination furnace and chlorinate it with carbon tetrachloride, and then introduce the generated hafnium tetrachloride gas into a condenser to condense to obtain crude hafnium tetrachloride solid. The crude hafnium tetrachloride solid contains more impurities and must be purified to obtain qualified refined hafnium tetrachloride.

[0003] The purification of hafnium tetrachloride is to utilize the difference between the boiling point of hafnium tetrachloride and the boiling point of impurities to control a certain temperature to remove impurities in crude hafnium tetrachloride. The purification device in the prior art needs to heat the crude hafnium tetrachloride in a fixed position, and the heating component cannot be disassembled conveniently and quickly. Therefore, the present application aims to provide a hafnium tetrachloride gas purification device that can overcome the above-mentioned defects. Utility Model Content

[0004] The utility model aims to overcome the shortcomings of the prior art and provide a hafnium tetrachloride gas purification device.

[0005] The purpose of the utility model is achieved through the following technical scheme: a hafnium tetrachloride gas purification device, comprising a box, a heating component, a feed component, a discharge component and a condensation component, the feed component and the discharge component are both arranged on the box, the condensation component is connected to the box, the box is nested in the heating component in a detachable manner, wherein a dehumidifier is arranged between the box and the condensation component.

[0006] Preferably, the heating assembly comprises a mounting tube, a plurality of heating plates arranged on the inner wall of the mounting tube, and a buckle arranged on the mounting tube, and the box body can be nested in the mounting tube.

[0007] Preferably, a first slide groove and a second slide groove connected to each other are provided on the outer wall of the box body, the first slide groove extends along the circumference of the mounting tube, and the second slide groove extends along the axial direction of the mounting tube, and the buckle can be nested in the first slide groove or the second slide groove.

[0008] Preferably, the feed assembly is arranged in the condensing assembly in a manner so as to be able to exchange heat with the condensing assembly, and the feed assembly includes a storage box and a feed pipe, and the storage box is connected to the box body via the feed pipe.

[0009] Preferably, the discharge assembly comprises a barrel and a discharge pipe, one end of the discharge pipe is connected to the barrel, and the other end of the discharge pipe is communicated with the box.

[0010] Preferably, the condensing assembly comprises a containing box and a heat exchange spiral tube disposed in the containing box, the containing box is disposed in the containing box, and the heat exchange spiral tube abuts against and contacts the containing box.

[0011] The utility model has the following advantages:

[0012] (1) By arranging the heating component to be detachable, the heating component can be easily disassembled for replacement or maintenance.

[0013] (2) The crude hafnium tetrachloride solid in the container 3a can exchange heat with the heat exchange spiral tube, and the temperature in the container rises to, for example, 57°C, thereby evaporating SiCl4. The SiCl4 vapor is discharged to remove the impurities, thereby improving the purity of the crude hafnium tetrachloride. The extraction effect can be increased by pre-treatment in advance. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of a hafnium tetrachloride gas purification device;

[0015] Figure 2 It is a schematic diagram of the arrangement of the first chute and the second chute in a cross-sectional view.

[0016] In the figure, 1-box, 2-heating component, 3-feeding component, 4-discharge component, 5-condensing component, 6-dehumidifier, 2a-installation cylinder, 2b-heating plate, 2c-clip, 7-first slide groove, 8-second slide groove, 3a-material storage box, 3b-feeding pipe, 4a-material barrel, 4b-discharge pipe, 5a-receiving box, 5b-heat exchange spiral tube. DETAILED DESCRIPTION

[0017] The utility model is further described below in conjunction with the accompanying drawings, and the protection scope of the utility model is not limited to the following:

[0018] like Figure 1 and Figure 2As shown, the present application provides a hafnium tetrachloride gas purification device, including a box 1, a heating component 2, a feed component 3, a discharge component 4 and a condensation component 5, the feed component 3 and the discharge component 4 are both arranged on the box 1, the condensation component 5 is connected to the box 1, and the box 1 is nested in the heating component 2 in a detachable manner, wherein a dehumidifier 6 is arranged between the box 1 and the condensation component 5. The heating component 2 is used to heat the box 1 so that the box 1 can reach a set temperature. Hafnium tetrachloride gas can be generated after heating in the box 1, and the hafnium tetrachloride gas can remove water vapor through the dehumidifier 6, and finally enter the condensation component 5 to condense to obtain crystalline hafnium tetrachloride. By detachably arranging the heating component 2, it is easy to disassemble the heating component 2 for replacement or maintenance. Specifically, the heating component 2 includes a mounting tube 2a, a plurality of heating plates 2b arranged on the inner wall of the mounting tube 2a, and a buckle 2c arranged on the mounting tube 2a, and the box 1 can be nested in the mounting tube 2a. A first slide groove 7 and a second slide groove 8 connected to each other are arranged on the outer wall of the box body 1. The first slide groove 7 extends along the circumference of the mounting tube 2a, and the second slide groove 8 extends along the axial direction of the mounting tube 2a. The buckle 2c can be nested in the first slide groove 7 or the second slide groove 8.

[0019] Preferably, the feed assembly 3 is arranged in the condensation assembly 5 in a manner that heat exchange can occur with the condensation assembly 5. The feed assembly 3 includes a container box 3a and a feed pipe 3b. The container box 3a is connected to the housing 1 via the feed pipe 3b. The condensation assembly 5 includes a container box 5a and a heat exchange spiral tube 5b arranged in the container box 5a. The container box 3a is arranged in the container box 5a, and the heat exchange spiral tube 5b abuts against the container box 5a. The crude hafnium tetrachloride solid in the container box 3a can exchange heat with the heat exchange spiral tube 5b, and the temperature in the container box 3a rises to, for example, 57°C, so that SiCl4 evaporates, and the SiCl4 vapor is discharged to remove the impurities, so that the purity of the crude tetrachloride is improved, and the extraction effect can be increased by pre-treatment in advance.

[0020] Preferably, the discharge assembly 4 includes a barrel 4a and a discharge pipe 4b, one end of the discharge pipe 4b is connected to the barrel 4a, and the other end of the discharge pipe 4b is connected to the box 1. It can be understood that an adsorbent can be provided in the barrel 4a for adsorbing harmful gases, and an exhaust port (not shown) is provided at the top of the barrel 4a so that the gas after adsorption and filtration can be discharged through the exhaust port.

[0021] Preferably, the dehumidifier is connected to the box body 1 through a first pipe, and the receiving box 5a is connected to the box body 1 through a second pipe. The first pipe, the second pipe, and the discharge pipe can be provided with a solenoid valve that can be manually controlled to open or close. The bottom of the receiving box 5a can be provided with a drain hole (not shown) to discharge the condensed liquid hafnium tetrachloride.

[0022] The working principle of the present application is as follows: crude hafnium tetrachloride solid is placed in a housing 1, and after proper heat exchange, the temperature rises, SiCl4 evaporates, and after the purity is improved, the solenoid valve is opened to allow the crude hafnium tetrachloride solid to enter the housing 1. The housing 1 adopts a segmented heating method, for example, maintaining 138°C for a period of time to remove TiCl4. Maintaining 183°C for a period of time to remove AlCl3. Finally, heating to 315°C to obtain HfCl4 vapor. The solenoid valve of the discharge pipe 4b is opened at 138°C and 183°C, so that TiCl4 and AlCl3 are adsorbed and removed. At 315°C, the dehumidifier is connected to the housing 1, so that the HfCl4 vapor can enter the holding box 5a to be condensed and purified.

[0023] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A hafnium tetrachloride gas purification device, characterized in that: The invention comprises a housing (1), a heating component (2), a feed component (3), a discharge component (4) and a condensation component (5), wherein the feed component (3) and the discharge component (4) are both arranged on the housing (1), the condensation component (5) is connected to the housing (1), and the housing (1) is nested in the heating component (2) in a detachable manner, wherein a dehumidifier (6) is arranged between the housing (1) and the condensation component (5).

2. The hafnium tetrachloride gas purification device according to claim 1, characterized in that: The heating component (2) comprises a mounting tube (2a), a plurality of heating plates (2b) arranged on the inner wall of the mounting tube (2a), and a buckle (2c) arranged on the mounting tube (2a), and the box body (1) can be nested in the mounting tube (2a).

3. The hafnium tetrachloride gas purification device according to claim 2, characterized in that: A first slide groove (7) and a second slide groove (8) connected to each other are arranged on the outer wall of the box body (1); the first slide groove (7) extends along the circumference of the mounting tube (2a); the second slide groove (8) extends along the axial direction of the mounting tube (2a); and the buckle (2c) can be nested in the first slide groove (7) or the second slide groove (8).

4. The hafnium tetrachloride gas purification device according to claim 1, characterized in that: The feed assembly (3) is arranged in the condensing assembly (5) in a manner capable of heat exchange with the condensing assembly (5), and the feed assembly (3) comprises a material storage box (3a) and a feed pipe (3b), and the material storage box (3a) is connected to the box body (1) via the feed pipe (3b).

5. The hafnium tetrachloride gas purification device according to claim 1, characterized in that: The discharge assembly (4) comprises a barrel (4a) and a discharge pipe (4b), one end of the discharge pipe (4b) is connected to the barrel (4a), and the other end of the discharge pipe (4b) is in communication with the box (1).

6. The hafnium tetrachloride gas purification device according to claim 4, characterized in that: The condensing assembly (5) comprises a containing box (5a) and a heat exchange spiral tube (5b) arranged in the containing box (5a); the material containing box (3a) is arranged in the containing box (5a); and the heat exchange spiral tube (5b) abuts against and contacts the containing box (5a).

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