A high-purity hexafluoroethane production unit

Abstract

This specification provides one or more embodiments of a high-purity hexafluoroethane production apparatus, including a main body, a reaction chamber installed outside the main body, and a separation tube for separating hexafluoroethane and hydrogen chloride, with the separation tube located inside the main body. Heating equipment is matched within the main body, and a storage chamber is provided within the reaction chamber outside the main body. The storage chamber has a mesh structure around its periphery to allow the reactants to contact the internal solid particles and to provide heating during the internal reaction. After passing through the reaction chamber and the corresponding separation chamber, the reactants can enter the separation chamber for separation processing. During separation, the pressure and water flow are controlled to ensure that the reaction product, hydrogen chloride, is completely dissolved in water, significantly improving the purity of the final product, hexafluoroethane. The entire reaction process and effect are completed within the equipment, reducing the requirements of traditional equipment processing in terms of large amounts of equipment and space, and significantly improving the purity of the product during re-separation.

Description

Technical Field

[0001] This specification relates to the field of hexafluoroethane production technology, and more particularly to a high-purity hexafluoroethane production apparatus. Background Art

[0002] Hexafluoroethane, also known as perfluoroethane, is an organic compound that is produced by replacing all six hydrogen atoms in ethane with fluorine atoms. Its chemical formula is C2F6. It is a colorless gas at room temperature and pressure and is mainly used as an insulating gas, a plasma etching agent, and a high dielectric strength coolant.

[0003] Existing technologies for hexafluoroethane generation equipment, such as the Chinese invention patent with patent name: Hexafluoroethane production process and patent application number: 2012104087787, propose a production process and equipment that are bulky, inefficient, and unable to achieve rapid processing or improve purity during rapid processing. Summary of the Invention

[0004] In view of this, the purpose of one or more embodiments of this specification is to provide a high-purity hexafluoroethane production apparatus to solve the problems of low working efficiency and purification during rapid processing in the prior art.

[0005] For the purposes described above, one or more embodiments of this specification provide a high-purity hexafluoroethane production apparatus, including a main body, a reaction chamber installed outside the main body, and a separation tube for separating hexafluoroethane and hydrogen chloride, wherein the separation tube is located inside the main body.

[0006] The main body is equipped with a heating device, and a storage cavity is set in the reaction chamber outside the main body. The storage cavity has a mesh structure around it to allow other reactants to contact the internal solid particles. A corresponding heating facility is also set outside the reaction chamber to heat the internal reaction.

[0007] In this process, pentafluorochloroethane and vaporized anhydrous hydrogen fluoride are introduced into the reaction chamber. With the addition of a catalyst and heating, the catalytic reaction efficiency is improved. The catalyst selected is a Cr catalyst, a Cr-Mg catalyst, a Cr-Al catalyst, or a Cr-Mg-Al catalyst, and the catalyst also contains indium and / or zinc.

[0008] The impurity content of the selected raw material, pentafluorochloroethane, is less than 2%.

[0009] The reaction chamber is provided with air inlets at both ends, and the reaction chamber is connected to the interior of the main body through an exhaust pipe, and a pressure valve is also provided in the exhaust pipe.

[0010] Both ends of the main body are fixed with external tubes by bolts.

[0011] Preferably, the separating tube includes: an inner cavity, an aluminum tube disposed inside the separating tube, and top caps disposed at both ends of the aluminum tube corresponding to the separating tube, and connecting holes are uniformly formed on the upper surface of the separating tube;

[0012] The top cover is used to seal both ends of the aluminum tube, which is used to circulate cold water to cool the interior during use.

[0013] Preferably, two sets of through pipes are provided on both sides below the separation pipe;

[0014] The two sets of connecting pipes pass through the external inlet pipes on both sides, and the corresponding connecting pipes of the external inlet pipes are sealed by a sealing component. One of the two sets of connecting pipes is a liquid inlet pipe and the other is a liquid outlet pipe.

[0015] Preferably, three sets of conveying pipes are respectively arranged inside the connecting hole and the separation pipe;

[0016] The three sets of conveying pipes are respectively connected to the reaction chambers in three directions via flexible hoses.

[0017] Preferably, the conveying pipeline consists of a ring pipe and a guide pipe;

[0018] A guide tube is fixedly installed above the top of the annular tube, and the guide tube is fixedly embedded in the corresponding connecting hole and is connected to the exhaust pipe through a flexible tube.

[0019] Preferably, air holes are uniformly formed at the bottom inner side of the annular tube.

[0020] Preferably, a one-way valve is provided in the connecting hole.

[0021] Preferably, the external guide tube is fixedly mounted on a bracket.

[0022] Preferably, an isolation plate is fixedly installed on the inner wall of the main body, and a connecting pipe is provided on the isolation plate corresponding to the exhaust pipe. Three sets of heating plates are embedded inside the main body.

[0023] The heating plate is used to heat and maintain the internal temperature.

[0024] As can be seen from the above, the device provided in one or more embodiments of this specification, after passing through the reaction chamber and the corresponding separation chamber, can enter the separation chamber for separation processing after the reaction. During separation, the pressure and water flow are controlled to ensure that the reaction product hydrogen chloride is completely dissolved in water, which greatly improves the purity of the final product hexafluoroethane. Moreover, the entire reaction process and effect are completed in the device, reducing the requirements of traditional equipment processing in terms of large amounts of equipment and space, and greatly improving the purity of the product during re-separation. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in one or more embodiments of this specification or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only one or more embodiments of this specification. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention;

[0027] Figure 2 This is a schematic cross-sectional view of the overall structure of the present invention;

[0028] Figure 3 This is a schematic diagram of the three-dimensional structure of the annular tube of the present invention;

[0029] Figure 4 This is a schematic diagram of the separation tube part of the present invention.

[0030] In the diagram: 1. Main body; 11. External lead pipe; 12. Support; 13. Through pipe; 14. Heating plate; 15. Isolation plate; 16. Reaction chamber; 17. Storage chamber; 18. Exhaust pipe; 19. Connecting pipe; 110. Air inlet; 2. Separation pipe; 21. Inner cavity; 22. Aluminum pipe; 23. Connecting hole; 24. Top cover; 3. Ring pipe; 31. Guide pipe. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of this disclosure clearer, the following detailed description is provided in conjunction with specific embodiments.

[0032] It should be noted that, unless otherwise defined, the technical or scientific terms used in one or more embodiments of this specification should have the ordinary meaning understood by one of ordinary skill in the art to which this disclosure pertains. The terms "first," "second," and similar words used in one or more embodiments of this specification do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly. Example 1:

[0033] like Figure 1-4As shown, a high-purity hexafluoroethane production apparatus is provided, including a main body 1, a reaction chamber 16 installed outside the main body 1, and a separation tube 2 for separating hexafluoroethane and hydrogen chloride, wherein the separation tube 2 is located inside the main body 1.

[0034] The main body 1 is equipped with a heating device, and a storage cavity 17 is provided in the reaction cavity 16 outside the main body 1. The storage cavity 17 has a mesh structure around it to allow the reaction to contact the internal solid particles. The reaction cavity 16 is also equipped with a corresponding heating device to heat the internal reaction.

[0035] In particular, by setting up heating facilities in the reaction chamber 16 during use, a more perfect heating effect is achieved, which helps the internal reaction effect during use.

[0036] The reaction chamber 16 is provided with air inlets 110 at both ends. The reaction chamber 16 is connected to the interior of the main body 1 through an exhaust pipe 18, and a pressure valve is also provided in the exhaust pipe 18.

[0037] The installation of a pressure valve greatly enhances the reaction effect within the reaction chamber, reducing the likelihood of incomplete reactions during use.

[0038] Both ends of the main body 1 are fixedly installed with external lead pipes 11 by bolts.

[0039] The external conveying pipe 11 connects to the external conveying pipe, enabling conveying from both sides and increasing the conveying effect.

[0040] In the reaction chamber 16, pentafluorochloroethane and vaporized anhydrous hydrogen fluoride are introduced. With the addition of a catalyst and heating, the catalytic reaction efficiency is improved. The selected catalyst is a Cr catalyst, a Cr-Mg catalyst, a Cr-Al catalyst, or a Cr-Mg-Al catalyst, and the catalyst also contains indium and / or zinc.

[0041] The impurity content of the selected raw material, pentafluorochloroethane, is less than 2%. Example 2:

[0042] like Figure 1-4 As shown, a high-purity hexafluoroethane production apparatus is provided, including a main body 1, a reaction chamber 16 installed outside the main body 1, and a separation tube 2 for separating hexafluoroethane and hydrogen chloride, wherein the separation tube 2 is located inside the main body 1.

[0043] The main body 1 is equipped with a heating device, and a storage cavity 17 is provided in the reaction cavity 16 outside the main body 1. The storage cavity 17 has a mesh structure around it to allow the reaction to contact the internal solid particles. The reaction cavity 16 is also equipped with a corresponding heating device to heat the internal reaction.

[0044] In particular, by setting up heating facilities in the reaction chamber 16 during use, a more perfect heating effect is achieved, which helps the internal reaction effect during use.

[0045] The reaction chamber 16 is provided with air inlets 110 at both ends. The reaction chamber 16 is connected to the interior of the main body 1 through an exhaust pipe 18, and a pressure valve is also provided in the exhaust pipe 18.

[0046] The installation of a pressure valve greatly enhances the reaction effect within the reaction chamber, reducing the likelihood of incomplete reactions during use.

[0047] Both ends of the main body 1 are fixedly installed with external lead pipes 11 by bolts.

[0048] The external conveying pipe 11 connects to the external conveying pipe, enabling conveying from both sides and increasing the conveying effect.

[0049] In the reaction chamber 16, pentafluorochloroethane and vaporized anhydrous hydrogen fluoride are introduced. With the addition of a catalyst and heating, the catalytic reaction efficiency is improved. The selected catalyst is a Cr catalyst, a Cr-Mg catalyst, a Cr-Al catalyst, or a Cr-Mg-Al catalyst, and the catalyst also contains indium and / or zinc.

[0050] The impurity content of the selected raw material, pentafluorochloroethane, is less than 2%.

[0051] The separation tube 2 includes: an inner cavity 21, an aluminum tube 22 is provided inside the separation tube 2, and top covers 24 are provided at both ends of the aluminum tube 22 corresponding to the separation tube 2. The upper surface of the separation tube 2 is uniformly provided with connecting holes 23.

[0052] The top cover 24 is used to seal both ends of the aluminum tube 22, which is used to circulate cold water to cool the interior during use.

[0053] The internal cooling system helps to lower the temperature of the distilled water, thereby reducing its volatility during use and preventing water vapor from affecting the purity of other components of hexafluoroethane. At the same time, the cooling process also helps to further reduce the water content of hexafluoroethane, which is slightly soluble in water.

[0054] Two sets of through pipes 13 are provided on both sides below the separation pipe 2;

[0055] Among them, the two sets of connecting pipes 13 pass through the external inlet pipes 11 on both sides respectively, and the external inlet pipes 11 are sealed by the sealing assembly at the corresponding connecting pipes 13. One of the two sets of connecting pipes 13 is a liquid inlet pipe and the other is a liquid outlet pipe.

[0056] The internal distilled water is kept in a flowing state by the flow pipe 13, which makes it more efficient to maintain the efficiency of other water-soluble substances during use, thereby greatly increasing the purity of hexafluoroethane.

[0057] The connecting hole 23 corresponds to three sets of conveying pipes in the separation pipe 2;

[0058] The three sets of conveying pipes are respectively connected to the reaction chambers 16 in three directions via flexible hoses. Example 3:

[0059] like Figure 1-4 As shown, a high-purity hexafluoroethane production apparatus is provided, including a main body 1, a reaction chamber 16 installed outside the main body 1, and a separation tube 2 for separating hexafluoroethane and hydrogen chloride, wherein the separation tube 2 is located inside the main body 1.

[0060] The main body 1 is equipped with a heating device, and a storage cavity 17 is provided in the reaction cavity 16 outside the main body 1. The storage cavity 17 has a mesh structure around it to allow the reaction to contact the internal solid particles. The reaction cavity 16 is also equipped with a corresponding heating device to heat the internal reaction.

[0061] In particular, by setting up heating facilities in the reaction chamber 16 during use, a more perfect heating effect is achieved, which helps the internal reaction effect during use.

[0062] The reaction chamber 16 is provided with air inlets 110 at both ends. The reaction chamber 16 is connected to the interior of the main body 1 through an exhaust pipe 18, and a pressure valve is also provided in the exhaust pipe 18.

[0063] The installation of a pressure valve greatly enhances the reaction effect within the reaction chamber, reducing the likelihood of incomplete reactions during use.

[0064] Both ends of the main body 1 are fixedly installed with external lead pipes 11 by bolts.

[0065] The external conveying pipe 11 connects to the external conveying pipe, enabling conveying from both sides and increasing the conveying effect.

[0066] In the reaction chamber 16, pentafluorochloroethane and vaporized anhydrous hydrogen fluoride are introduced. With the addition of a catalyst and heating, the catalytic reaction efficiency is improved. The selected catalyst is a Cr catalyst, a Cr-Mg catalyst, a Cr-Al catalyst, or a Cr-Mg-Al catalyst, and the catalyst also contains indium and / or zinc.

[0067] The impurity content of the selected raw material, pentafluorochloroethane, is less than 2%.

[0068] The separation tube 2 includes: an inner cavity 21, an aluminum tube 22 is provided inside the separation tube 2, and top covers 24 are provided at both ends of the aluminum tube 22 corresponding to the separation tube 2. The upper surface of the separation tube 2 is uniformly provided with connecting holes 23.

[0069] The top cover 24 is used to seal both ends of the aluminum tube 22, which is used to circulate cold water to cool the interior during use.

[0070] The internal cooling system helps to lower the temperature of the distilled water, thereby reducing its volatility during use and preventing water vapor from affecting the purity of other components of hexafluoroethane. At the same time, the cooling process also helps to further reduce the water content of hexafluoroethane, which is slightly soluble in water.

[0071] Two sets of through pipes 13 are provided on both sides below the separation pipe 2;

[0072] Among them, the two sets of connecting pipes 13 pass through the external inlet pipes 11 on both sides respectively, and the external inlet pipes 11 are sealed by the sealing assembly at the corresponding connecting pipes 13. One of the two sets of connecting pipes 13 is a liquid inlet pipe and the other is a liquid outlet pipe.

[0073] The internal distilled water is kept in a flowing state by the flow pipe 13, which makes it more efficient to maintain the efficiency of other water-soluble substances during use, thereby greatly increasing the purity of hexafluoroethane.

[0074] The connecting hole 23 corresponds to three sets of conveying pipes in the separation pipe 2;

[0075] The three sets of conveying pipes are respectively connected to the reaction chambers 16 in three directions via flexible hoses.

[0076] The conveying pipeline consists of a ring pipe 3 and a guide pipe 31;

[0077] A guide pipe 31 is fixedly installed above the top of the annular pipe 3, and the guide pipe 31 is fixedly embedded in the corresponding connecting hole 23, and is connected to the exhaust pipe 18 through a flexible tube.

[0078] The annular tube 3 has air holes evenly distributed at the bottom inner side.

[0079] The ring pipe 3 facilitates effective ventilation during use, and a corresponding pressure gauge is installed in the reaction chamber 16 to control the internal pressure and indirectly control the amount of gas output per unit time. Example 4:

[0080] A one-way valve is installed inside the connecting hole 23.

[0081] The external guide tube 11 is fixedly mounted on the bracket 12.

[0082] The mounting bracket 12 is used to effectively install and fix the whole unit during use.

[0083] An isolation plate 15 is fixedly installed on the inner wall of the main body 1. A connecting pipe 19 is provided on the isolation plate 15 at the location corresponding to the exhaust pipe 18. Three sets of heating plates 14 are embedded inside the main body 1.

[0084] The heating plate 14 is used to heat and maintain the internal temperature.

[0085] The heating plate 14 provides more effective heating to the interior during use, which is beneficial for the overall reaction of the materials.

[0086] Working principle: During use, pentafluorochloroethane and vaporized anhydrous hydrogen fluoride are introduced into the three reaction chambers 16 from both ends. A catalyst is placed inside to facilitate a more efficient reaction. Heating facilities on the outside provide heat for the catalytic reaction. After the reaction, the gas flows through the exhaust pipe 18, and as the internal pressure increases, it is forced into the separation pipe 2 inside the main body 1. At this time, a suitable amount of distilled water is injected into the separation pipe 2 through the connecting pipe 13 to maintain a flowing state. After the reaction in the corresponding annular pipe 3, hydrogen chloride gas and trace amounts of hexafluoroethane dissolve in the water. To ensure complete dissolution of the hydrogen chloride in the water, a one-way valve in the connecting hole 23 controls the internal wall pressure, resulting in optimal purity of the purified hexafluoroethane.

[0087] Furthermore, the apparatus in the above embodiments is used to implement the corresponding methods in the foregoing embodiments and has the beneficial effects of the corresponding method embodiments, which will not be repeated here.

[0088] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of this disclosure (including the claims) is limited to these examples; within the framework of this disclosure, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of different aspects of one or more embodiments of this specification as described above, which are not provided in detail for the sake of brevity.

[0089] Although this disclosure has been described in conjunction with specific embodiments thereof, many substitutions, modifications and variations of these embodiments will be apparent to those skilled in the art from the foregoing description.

[0090] One or more embodiments of this specification are intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of one or more embodiments of this specification should be included within the scope of protection of this disclosure.

Claims

1. A high-purity hexafluoroethane production apparatus, comprising a main body (1), a reaction chamber (16) installed outside the main body (1), and a separation tube (2) for separating hexafluoroethane and hydrogen chloride, wherein the separation tube (2) is located inside the main body (1), characterized in that: The main body (1) is equipped with a heating device, and a storage cavity (17) is provided in the reaction cavity (16) outside the main body (1). The storage cavity (17) has a mesh structure around it for contacting the reaction with the internal solid particles. A corresponding heating facility is also provided outside the reaction cavity (16) for heating during the internal reaction. The reaction chamber (16) is provided with air inlets (110) at both ends. The reaction chamber (16) and the interior of the main body (1) are connected through an exhaust pipe (18). A pressure valve is also provided in the exhaust pipe (18). Both ends of the main body (1) are fixed with external lead pipes (11) by bolts; The separation tube (2) includes: an inner cavity (21), the inner cavity (21) is opened inside the separation tube (2), an aluminum tube (22) is installed inside the separation tube (2), and top caps (24) are installed at both ends of the aluminum tube (22) corresponding to the separation tube (2), and connecting holes (23) are evenly opened on the upper surface of the separation tube (2). The top cover (24) is used to seal both ends of the aluminum tube (22), which is used to cool the interior by circulating cold water during use.

2. The high-purity hexafluoroethane production apparatus according to claim 1, characterized in that, Two sets of through pipes (13) are provided on both sides below the separation pipe (2); Among them, the two sets of connecting pipes (13) pass through the external inlet pipes (11) on both sides respectively, and the external inlet pipes (11) are sealed by the sealing assembly at the corresponding connecting pipes (13). One of the two sets of connecting pipes (13) is an inlet pipe and the other is a drain pipe.

3. The high-purity hexafluoroethane production apparatus according to claim 1, characterized in that, The connecting hole (23) corresponds to three sets of conveying pipes in the separation pipe (2); The three sets of conveying pipes are respectively connected to the reaction chambers (16) in three directions through flexible hoses.

4. The high-purity hexafluoroethane production apparatus according to claim 3, characterized in that, The conveying pipeline consists of a ring pipe (3) and a guide pipe (31); A guide tube (31) is fixedly installed above the top of the annular tube (3), and the guide tube (31) is fixedly embedded in the corresponding connecting hole (23) and is connected to the exhaust pipe (18) through a flexible tube.

5. A high-purity hexafluoroethane production apparatus according to claim 4, characterized in that, The annular tube (3) has uniformly opened air holes at the bottom of its inner side.

6. The high-purity hexafluoroethane production apparatus according to claim 5, characterized in that, A one-way valve is installed inside the connecting hole (23).

7. The high-purity hexafluoroethane production apparatus according to claim 1, characterized in that, The external guide tube (11) is fixedly mounted on the external bracket (12).

8. A high-purity hexafluoroethane production apparatus according to claim 1, characterized in that, An isolation plate (15) is fixedly installed on the inner wall of the main body (1). A connecting pipe (19) is provided on the isolation plate (15) at the location corresponding to the exhaust pipe (18). Three sets of heating plates (14) are embedded inside the main body (1). The heating plate (14) is used to heat and maintain the internal temperature.

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