Quartz reaction kettle for impurity analysis of high-purity gallium

Abstract

The utility model relates to the technical field of chemical experiment instruments, and particularly discloses a quartz reaction kettle for high-purity gallium impurity analysis, which comprises a top cover, a gas inlet pipe and a gas outlet pipe are arranged on the top cover, a hemispherical inner cavity is arranged in the top cover, the gas inlet pipe is communicated with the inner cavity, and the gas outlet pipe is communicated with the outside of the inner cavity; and three branch pipes are arranged at the bottom of the inner cavity at intervals in the circumferential direction. As the three branch pipes are uniformly arranged at the bottom of the inner cavity in the circumferential direction, when gas enters the inner cavity, the right lower part of the gas flow movement direction does not correspond to any branch pipe, so that a large amount of hydrogen chloride is prevented from directly circulating from a certain branch pipe, and as the whole inner cavity is of a hemispherical structure, when the gas entering the inner cavity impacts the bottom of the inner cavity, the hydrogen chloride is prevented from entering the inner cavity. And the gas is dispersed in the inner cavity and then uniformly enters the three branch pipes, so that the gas entering amount in each branch pipe is ensured to be the same.

Description

Technical Field

[0001] This application relates to the field of chemical experimental instrument technology, and in particular to a quartz reaction vessel for high-purity gallium impurity analysis. Background Technology

[0002] Gallium is a grayish-blue or silvery-white metal with a melting point of 29.8°C. In nature, it is often found in trace amounts dispersed in ores such as bauxite and zinc sphalerite. High-purity gallium is further purified through methods such as electrolysis, vacuum distillation, distributed crystallization, and zone melting. It can be used to manufacture semiconductor dopants such as gallium nitride, gallium arsenide, and gallium phosphide, as well as heat exchange media for nuclear reactions.

[0003] The quantitative analysis of impurity elements in high-purity gallium currently relies heavily on inductively coupled plasma mass spectrometry (ICP-MS). The principle involves the reaction of gallium with hydrogen chloride gas at 200°C to generate gallium trichloride gas. This gallium trichloride gas is then volatilized, separating the main gallium component while enriching the impurities. In this process, hydrogen chloride gas reacts with the gallium in the sample (containing impurities) in the crucible within a quartz reactor (vaporizer). After the reaction is complete, the impurity content in the crucible is measured, thus obtaining the impurity content in the sample. This method has certain advantages. However, in the aforementioned experiment, the inner cavity of the quartz crucible has a conical top and three branches arranged in a straight line at the bottom, connecting to three crucibles respectively. When hydrogen chloride gas enters the inner cavity, a large amount of gas flows through the branch located in the middle, directly opposite the top of the inner cavity, while a smaller amount flows through the branches on either side. This results in inconsistent amounts of hydrogen chloride gas flowing through the crucibles, making it impossible to guarantee a single variable and further affecting the accuracy of the experiment. Utility Model Content

[0004] The purpose of this application is to provide a quartz reactor for high-purity gallium impurity analysis in order to solve the above-mentioned problems.

[0005] To achieve the above objectives, the technical solution of this application is as follows:

[0006] A quartz reactor for high-purity gallium impurity analysis includes a top cover, an inlet pipe and an outlet pipe on the top cover, a hemispherical inner cavity inside the top cover, the inlet pipe communicating with the inner cavity, and the outlet pipe communicating with the outside of the inner cavity; and three circumferentially spaced branch pipes at the bottom of the inner cavity.

[0007] Preferably, the three branch pipes are arranged at even intervals around the periphery.

[0008] Preferably, the top wall of the inner cavity is a spherical structure; the bottom wall of the inner cavity is a planar structure, and the branch pipe is disposed on the bottom wall of the inner cavity.

[0009] Preferably, the end of the branch pipe away from the inner cavity is inclined outward.

[0010] Preferably, the inclination angle of the end of the branch pipe is 15°.

[0011] Preferably, the vertical portion and the inclined portion of the branch pipe have the same length.

[0012] Preferably, the reactor further includes a pot body, and the top cover is disposed on the upper edge of the pot body.

[0013] The quartz reactor for high-purity gallium impurity analysis disclosed in this application has three branch pipes evenly arranged circumferentially at the bottom of the inner cavity. When gas enters the inner cavity, the direction of gas flow does not directly correspond to any one branch pipe, thus preventing a large amount of hydrogen chloride from flowing directly from one branch pipe. Furthermore, since the inner cavity is hemispherical in shape, when the gas entering the inner cavity impacts the bottom of the inner cavity, the gas disperses in the inner cavity and then enters the three branch pipes evenly, thus ensuring that the amount of gas entering each branch pipe is the same. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this application;

[0015] Figure 2 This is a cross-sectional view of the overall structure of this application;

[0016] Figure 3 This is a perspective view of the top cover structure in this application;

[0017] Figure 4 This is another perspective view of the top cover structure in this application;

[0018] Figure 5 This is a schematic diagram of the pot body structure in this application.

[0019] In the picture:

[0020] 1. Top cover; 10. Outer edge; 2. Air inlet pipe; 3. Air outlet pipe; 4. Pot body; 40. Upper edge; 5. Inner cavity; 6. Branch pipe. Detailed Implementation

[0021] The present application will now be described in further detail with reference to the accompanying drawings. The drawings are simplified schematic diagrams, illustrating only the basic structure of the present application, and therefore only show the components relevant to the present application.

[0022] like Figure 1-5 As shown, a quartz reactor for high-purity gallium impurity analysis includes a top cover 1, an inlet pipe 2 and an outlet pipe 3 on the top cover 1, a hemispherical inner cavity 5 inside the top cover 1, the inlet pipe 2 communicating with the inner cavity 5, and the outlet pipe 3 communicating with the outside of the inner cavity 5; and three circumferentially spaced branch pipes 6 at the bottom of the inner cavity 5.

[0023] The top cover 1 is made entirely of quartz, and has an inner cavity 5 inside, where hydrogen chloride gas will first enter the inner cavity 5.

[0024] The inner cavity 5 has an outer edge 10, which is used to dock with the bottom part of the reactor.

[0025] The top of the inner cavity 5 is connected to the air inlet pipe 2, and the bottom of the inner cavity 5 is connected to the branch pipe 6. The gas entering the inner cavity 5 will flow evenly through the three branch pipes 6.

[0026] Since the three branch pipes 6 are evenly arranged around the bottom of the inner cavity 5, when the gas enters the inner cavity 5, the direction of airflow does not directly correspond to any one of the branch pipes 6, thus preventing a large amount of hydrogen chloride from flowing directly from one of the branch pipes 6. Furthermore, since the inner cavity 5 has a hemispherical structure, when the gas entering the inner cavity 5 impacts the bottom of the inner cavity 5, the gas disperses in the inner cavity 5 and then enters the three branch pipes 6 evenly, thus ensuring that the amount of gas entering each branch pipe 6 is the same.

[0027] Furthermore, since the three branch pipes 6 are arranged circumferentially, the distance between any two branch pipes 6 can be maximized, thereby avoiding the crucibles at the ends of the branch pipes 6 being too close together and causing mutual contamination, which would affect the experimental results.

[0028] In some further embodiments, the three branch pipes are arranged at uniform intervals around the perimeter.

[0029] Preferably, the three branch pipes 6 are evenly spaced circumferentially to ensure that the distance between any two adjacent branch pipes 6 is the same, thus avoiding differences in the inflow of hydrogen chloride gas due to different spacing.

[0030] In some further embodiments, the top wall of the inner cavity 5 is a spherical structure; the bottom wall of the inner cavity 5 is a planar structure, and the branch pipe 6 is disposed on the bottom wall of the inner cavity 5.

[0031] The top wall of the inner cavity 5 is a spherical structure. When the inner cavity 5 is filled with gas, the gas can move towards the bottom wall of the inner cavity 5 under the action of the spherical structure, so as to simultaneously meet the requirements of gas diffusion and re-aggregation, and then enter the branch pipe 6 in equal and uniform amounts.

[0032] In some further embodiments, the end of the branch pipe 6 away from the inner cavity 5 is inclined outward.

[0033] To further ensure that the ends of the three branch pipes 6, i.e. the ends furthest from the inner cavity 5, do not contaminate each other, the ends of the branch pipes 6 are specially designed to be inclined outward, i.e., one end of the branch pipe 6 is bent outward, so that the distance between the crucibles corresponding to the ends of the three branch pipes 6 is greater.

[0034] In some further embodiments, the inclination angle of the end of branch pipe 6 is 15°.

[0035] Preferably, in this embodiment, the inclination angle of the end of the branch pipe 6 is 15°, which ensures proper bending while avoiding excessive bending that could affect the connection with the crucible.

[0036] In some further embodiments, the vertical portion of the branch pipe 6 has the same length as the inclined portion.

[0037] Preferably, the vertical portion and the bent portion of the branch pipe 6 are equidistant. When the inclined portion is too long, the gas has a relatively long flow time in the inclined portion, which will make the gas flow too turbulent when it exits from the end of the branch pipe 6, thus causing a large impact on the sample in the crucible and affecting the normal conduct of the experiment. When the inclined portion is too short, the gas flow direction changes abruptly near the end, which will also cause the entire gas flow to be unstable and unable to react effectively with the sample in the crucible, thus affecting the normal conduct of the experiment.

[0038] Therefore, in this embodiment, the vertical part and the inclined part of the branch pipe 6 have the same length, so as to both buffer the gas and ensure that the airflow at the end is more stable.

[0039] In some further embodiments, the reactor also includes a pot body 4, with a top cover 1 disposed along the upper edge 40 of the pot body 4.

[0040] The entire top cover 1 is placed on top of the pot body 4. Specifically, the outer edge 10 of the top cover 1 is connected to the upper edge 40 of the pot body 4.

[0041] The crucible is located at the bottom of the pot body 4.

[0042] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the scope of protection of this application.

Claims

1. A quartz reaction vessel for high-purity gallium impurity analysis, characterized in that, Includes a top cover (1), on which an air inlet pipe (2) and an air outlet pipe (3) are provided. The top cover (1) has a hemispherical inner cavity (5) inside. The air inlet pipe (2) is connected to the inner cavity (5), and the air outlet pipe (3) is connected to the outside of the inner cavity (5). The bottom of the inner cavity (5) is provided with three circumferentially spaced branch pipes (6).

2. The quartz reaction vessel for high-purity gallium impurity analysis according to claim 1, characterized in that, The three branch pipes (6) are arranged evenly spaced around the perimeter.

3. The quartz reaction vessel for high-purity gallium impurity analysis according to claim 1, characterized in that, The top wall of the inner cavity (5) is a spherical structure; the bottom wall of the inner cavity (5) is a planar structure, and the branch pipe (6) is located on the bottom wall of the inner cavity (5).

4. The quartz reaction vessel for high-purity gallium impurity analysis according to claim 2, characterized in that, The branch pipe (6) is inclined outward at the end away from the inner cavity (5).

5. The quartz reaction vessel for high-purity gallium impurity analysis according to claim 4, characterized in that, The inclination angle of the end of the branch pipe (6) is 15°.

6. The quartz reaction vessel for high-purity gallium impurity analysis according to claim 5, characterized in that, The vertical and inclined portions of the branch pipe (6) have the same length.

7. The quartz reaction vessel for high-purity gallium impurity analysis according to claim 1, characterized in that, The reactor also includes a pot body (4), and the top cover (1) is disposed on the upper edge (40) of the pot body (4).

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