Titanium sponge reactor end socket assembly and titanium sponge reactor

Abstract

The utility model discloses a titanium sponge reactor end socket assembly and a titanium sponge reactor, and belongs to the technical field of reactors. The end socket assembly comprises a stainless steel layer and a carbon steel layer, wherein the thickness L2 of the stainless steel layer is greater than the thickness L1 of the carbon steel layer; the carbon steel layer is arranged on the inner side of the stainless steel layer and compounded into an integrated structure, and an outer surface and an inner surface are formed; wherein the inner surface is symmetrical with respect to a central point F, the inner surface comprising a central profile and curved profiles extending from the central profile, the central profile having a central radius of curvature R1 and the curved profiles each having a profile radius of curvature R2, the central radius of curvature R1 being greater than the profile radius of curvature R2; and the outline shapes of the outer surface and the inner surface tend to be consistent. According to the structure, the surface of the sealing head tends to be smooth, and the shape of the outer surface and the shape of the inner surface tend to be consistent, so that heat absorption of a reactor in a heating furnace is facilitated, and the reaction is accelerated.

Description

Technical Field

[0001] This utility model belongs to the field of reactor technology, specifically relating to a sponge titanium reactor head assembly and a sponge titanium reactor. Background Technology

[0002] In the production of sponge titanium, titanium tetrachloride and metallic magnesium react at high temperature to produce sponge titanium and magnesium chloride, with further addition of magnesium chloride and unreacted metallic magnesium. One cycle of the two separation processes—high-temperature heating and simultaneous vacuum separation from the sponge titanium—is (times). Although both steps are carried out continuously using the same reaction vessel, the reaction vessel is exposed to various harsh environments and undergoes deformation or corrosion during the series of steps. For example, the outer surface wears due to high-temperature oxidation, while the inner surface wears due to the reaction with molten metallic magnesium, corrosion from molten magnesium chloride, and interdiffusion with the produced sponge titanium.

[0003] Currently used sponge titanium reactors include a cylindrical body with a cap at the bottom. However, the existing cap directly affects the reactor's service life. For example, Chinese patent application CN201020630088.2 discloses a sponge titanium reductive distillation reactor that extends from the bottom to the top of the cylindrical body and is connected to a connecting pipe at the top of the cylindrical body. The cylindrical body has a double-layer structure, with an inner layer of carbon steel and an outer layer of stainless steel. However, the cap at the bottom is made of carbon steel through pressing, and its service life is much shorter than that of the cylindrical body, thus limiting the reactor's service life. Summary of the Invention

[0004] 1. The problem to be solved

[0005] To address the aforementioned technical problems, the purpose of this utility model is to provide a sponge titanium reactor head assembly and a sponge titanium reactor, thereby extending the service life of the reactor.

[0006] 2. Technical Solution

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] The first aspect of this utility model is to provide a sponge titanium reactor head assembly, including a stainless steel layer and a carbon steel layer, wherein the thickness L2 of the stainless steel layer is greater than the thickness L1 of the carbon steel layer; the carbon steel layer is placed inside the stainless steel layer and is integrated into a single structure, forming an outer surface and an inner surface.

[0009] The inner surface is symmetrical about the center point F, and includes a central profile and curved profiles extending from the central profile. The central profile has a central radius of curvature R1, and each of the curved profiles has a profile radius of curvature R2. The central radius of curvature R1 is greater than the profile radius of curvature R2. The outer surface has a profile shape that is similar to that of the inner surface.

[0010] The aforementioned inner side refers to the interior of the reactor, meaning that during use, the carbon steel layer is in contact with the reactants.

[0011] According to any embodiment of the first aspect of the present invention, the radius of curvature R2 of the contour gradually increases from both sides toward the center point F.

[0012] According to any embodiment of the first aspect of the present invention, the ratio of the thickness L2 of the stainless steel layer to the thickness L1 of the carbon steel layer is (1.5-1.8):1, and the preferred ratio is 1.6:1. The large composite ratio of the stainless steel layer and the carbon steel layer effectively solves the delamination problem between the two.

[0013] According to any embodiment of the first aspect of the present invention, the thickness L2 of the stainless steel layer is 20 mm, and the thickness L1 of the carbon steel layer is 12 mm.

[0014] The second aspect of this utility model is to provide a sponge titanium reactor, comprising: a cylindrical body for reaction, wherein the cylindrical body has a connection hole; a connecting assembly disposed on the cylindrical body, the connecting assembly including an upper flange, a lower flange and a stiffener plate, the upper flange and the lower flange being connected to both ends of the stiffener plate, and a lifting lug being connected to the outer end of the stiffener plate; a magnesium chloride tube disposed on the inner wall of the reactor cylindrical body; and a head assembly disposed at the bottom of the cylindrical body, wherein the magnesium chloride tube extends to the inner side of the head assembly;

[0015] The end cap assembly includes a stainless steel layer and a carbon steel layer, wherein the thickness L2 of the stainless steel layer is greater than the thickness L1 of the carbon steel layer; the carbon steel layer is placed inside the stainless steel layer and is integrated into a single structure, forming an outer surface and an inner surface.

[0016] The inner surface is symmetrical with respect to the center point F. The inner surface includes a central profile and curved profiles extending from the central profile. The central profile has a central radius of curvature R1, and each of the curved profiles has a profile radius of curvature R2. The central radius of curvature R1 is greater than the profile radius of curvature R2. The outer surface has a shape that is similar to that of the inner surface.

[0017] According to any embodiment of the second aspect of the present invention, the contour curvature radius R2 gradually increases from both sides toward the center point F.

[0018] According to any embodiment of the second aspect of the present invention, the ratio of the thickness L2 of the stainless steel layer to the thickness L1 of the carbon steel layer is (1.5-1.8):1.

[0019] According to any embodiment of the second aspect of the present invention, the thickness L2 of the stainless steel layer is 20 mm, and the thickness L1 of the carbon steel layer is 12 mm.

[0020] 3. Beneficial effects

[0021] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0022] (1) The end cap assembly of the sponge titanium reactor of this utility model not only makes the reactor have better heat resistance and extend its service life, but also makes the end cap surface smoother. In addition, the outer surface and the inner surface are more consistent, which is conducive to the heat absorption of the reactor in the heating furnace, thereby accelerating the smooth progress of the reaction.

[0023] (2) In the head assembly of the sponge titanium reactor of this utility model, the ratio of the thickness L2 of the stainless steel layer to the thickness L1 of the carbon steel layer is (1.5-1.8):1. The large composite ratio of the stainless steel layer and the carbon steel layer effectively solves the delamination problem between the two. Attached Figure Description

[0024] The technical solution of this utility model will be further described in detail below with reference to the accompanying drawings and embodiments. However, it should be understood that these drawings are designed for illustrative purposes only and are not intended to limit the scope of this utility model. In addition, unless otherwise specified, these drawings are intended only to conceptually illustrate the structural construction described herein and are not necessarily drawn to scale.

[0025] Figure 1 This is a schematic diagram of the structure of the sponge titanium reactor of this utility model;

[0026] Figure 2 This is a top view of the head assembly of the sponge titanium reactor of this utility model;

[0027] Figure 3 This is a partial cross-sectional view of the head assembly of the sponge titanium reactor of this utility model.

[0028] Explanation of reference numerals in the attached figures:

[0029] 10. Shell; 11. Head assembly; 111. Carbon steel layer; 112. Stainless steel layer; 113. Inner surface; 114. Outer surface; 12. Magnesium chloride tube; 13. Connecting assembly. Detailed Implementation

[0030] This disclosure will be more readily understood by referring to the following description, taken in conjunction with the accompanying drawings and examples, all of which form part of this disclosure. It should be understood that this disclosure is not limited to the specific products, methods, conditions, or parameters described and / or illustrated herein. Furthermore, the terminology used herein is for the purpose of describing particular embodiments by way of example only and is not intended to be limiting, unless otherwise stated.

[0031] It should also be understood that, for clarity, certain features of this disclosure may be described herein in the context of individual embodiments, but may also be provided in combination with each other in individual embodiments. That is, unless obviously incompatible or specifically excluded, each individual embodiment is considered to be combinable with any other embodiment, and such combination is considered to represent another different embodiment. Conversely, for brevity, various features of this disclosure described in the context of individual embodiments may also be provided individually or in any sub-combination. Finally, while a particular embodiment may be described as part of a series of steps or part of a more general structure, each step or substructure may also be considered an independent embodiment in itself.

[0032] Unless otherwise stated, it should be understood that each individual element in the list and each combination of individual elements in the list will be interpreted as a different embodiment. For example, a list of embodiments denoted as "A, B, or C" should be interpreted as including embodiments "A", "B", "C", "A or B", "A or C", "B or C", or "A, B, or C".

[0033] In this disclosure, the singular forms of the articles “a,” “one,” and “the” also include the corresponding plural references, and references to a particular value include at least that particular value, unless the context clearly indicates otherwise. Thus, for example, a reference to “substance” is a reference to at least one of such substance and its equivalents.

[0034] Ordinal terms such as “first” and “second” may be used to describe various components or fluids, but these components and fluids are not limited by these terms. Therefore, without departing from the teachings of this disclosure, these terms are used only to distinguish one component / fluid from another.

[0035] When an item is described using the combined terms “...and / or ...", the description should be understood to include any one of the listed items and all combinations thereof.

[0036] Generally, the use of the term "about" indicates an approximation that can vary depending on the desired characteristics obtained from the disclosed subject matter and will be interpreted in a context-dependent manner based on function. Therefore, those skilled in the art will be able to interpret a degree of difference on a case-by-case basis. In some cases, the number of significant figures used when expressing a particular value can be a representative technique for determining the difference allowed by the term "about." In other cases, a gradient within a range of values ​​can be used to determine the range of differences allowed by the term "about." Furthermore, all ranges in this disclosure are inclusive and composable, and references to values ​​described within a range include every value within that range.

[0037] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains; the terms used herein and / or include any and all combinations of one or more of the associated listed items.

[0038] like Figures 1 to 3 As shown, the sponge titanium reactor of this embodiment includes: a cylindrical body 10 for reaction, wherein the cylindrical body 10 has a connection hole; a connecting assembly 13 disposed on the cylindrical body 10, the connecting assembly 13 including an upper flange, a lower flange and a stiffener plate, the two ends of the stiffener plate being connected to the upper flange and the lower flange, and a lifting lug being connected to the outer end of the stiffener plate; the stiffener plate, in addition to reinforcing the upper flange and the lower flange, can also distribute part of the weight of the cylindrical body 10 supported by the lower flange onto the upper flange, and a lifting lug being connected to the outer end of the stiffener plate for lifting the cylindrical body 10 of the reactor; a magnesium chloride tube 12 disposed on the inner wall of the reactor cylindrical body 10; a head assembly 11 disposed at the bottom of the cylindrical body 10, and the magnesium chloride tube 12 extending to the inner side of the head assembly 11.

[0039] Among them, combined Figure 2 and Figure 3 As shown, the head assembly 11 includes a stainless steel layer 112 and a carbon steel layer 111. The carbon steel layer 111 is placed inside the stainless steel layer 112 and is integrally formed, creating an outer surface 114 and an inner surface 113. This head assembly has good bending and forming performance and high-temperature heat resistance. Furthermore, the head assembly 11 can be welded to the existing composite steel plate of the reactor body, ensuring the normal operation of the reactor.

[0040] The stainless steel layer 112 is made of a material selected from SUS321, SUS310, SUS304, SUS31, and HRJY1. In this embodiment, the stainless steel layer 112 is made of HRJY1. The carbon steel layer 111 is made of a material selected from Q245R, Q345D, Q345E, and Q345R, with Q345R being preferred. All of the above materials are commercially available products. "HR" refers to heat-resistant steel, "JY" is an abbreviation for Jiuyi Company, and HRJY1 is the model number of the commercially available product.

[0041] like Figure 2 As shown, the thickness L2 of the stainless steel layer 112 is greater than the thickness L1 of the carbon steel layer 111; specifically, the ratio of the thickness L2 of the stainless steel layer 112 to the thickness L1 of the carbon steel layer 111 is (1.5-1.8):1. Preferably, the thickness L2 of the stainless steel layer 112 is 20 mm, and the thickness L1 of the carbon steel layer 111 is 12 mm.

[0042] It should be noted that the carbon steel layer 111 and the stainless steel layer 112 are composited using explosive welding, which can be performed according to the process specified in the industry standard "Composite Steel Plates for Pressure Vessels 2019". The composite plate is then processed and manufactured using the following process:

[0043] 1) Natural gas furnace heating is used, and the furnace atmosphere is weakly oxidizing: When loading the billet, ensure that the surface of the billet is dry. Place the Q345R carbon steel layer 111 side upwards, with the bottom raised by 300mm. The raised fixture should be of a hollow design to ensure effective air convection. Separate the contact parts of the refractory bricks and billets with refractory cotton. The lateral distance between billets should be ≥200mm to ensure that they do not come into contact with each other when exiting the furnace to prevent scratches. The billet should be at least 500mm away from the flame to prevent the flame from directly heating the billet. If necessary, place a fire wall between the billet and the flame.

[0044] 2) Heating process: The material sheet is put into the furnace at ≤500°C, and the temperature is raised with the furnace. The holding temperature is 950°C and the total holding time is 60 minutes. After being taken out of the furnace, it is quickly pressed to form the inner surface 113 and the outer surface 114. The final pressing temperature is ≥800°C. After pressing, it is stationary and air-cooled.

[0045] 3) The number of molding times is ≤2. The first molding heating is carried out according to the above process. The second molding is put into the furnace while it is hot, and the temperature is rapidly increased. The holding temperature is 950℃ and the holding time is ≥10min. After the furnace is removed and pressed, the final pressing is air-cooled to obtain the end cap, which makes the end cap have better thermal permeability and reduces composite stress.

[0046] Among them, Figure 3Among them, the inner surface 113 is symmetric with respect to the center point F. The inner surface 113 includes a central contour and a curved contour extending from the central contour. The central contour has a central curvature radius R1, and each of the curved contours has a contour curvature radius R2. The central curvature radius R1 is greater than the contour curvature radius R2. The design of the above structure makes the head surface tend to be smooth. Coupled with the fact that the shapes of the outer surface 114 and the inner surface 113 tend to be the same, it is beneficial for the reactor to absorb heat in the heating furnace, thereby accelerating the progress of the reaction.

[0047] As Figure 3 shown, the contour curvature radius R2 gradually increases from both sides towards the center point F, that is, R2' < R2'' < R2''' < R2''''. The inner surface 113 converges from both sides towards the center point F, tending to be smooth and having good consistency, providing a reliable bottom reaction for the production of titanium sponge.

[0048] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be encompassed within the present invention. Any reference signs in the claims should not be regarded as limiting the claimed rights.

Claims

1. A sponge titanium reactor head assembly (11), characterized in that, It includes a stainless steel layer (112) and a carbon steel layer (111), wherein the thickness L2 of the stainless steel layer (112) is greater than the thickness L1 of the carbon steel layer (111); the carbon steel layer (111) is placed inside the stainless steel layer (112) and is integrated into a single structure, forming an outer surface (114) and an inner surface (113). The inner surface (113) is symmetrical about the center point F. The inner surface (113) includes a central profile and curved profiles extending from the central profile. The central profile has a central radius of curvature R1, and each of the curved profiles has a profile radius of curvature R2. The central radius of curvature R1 is greater than the profile radius of curvature R2. The outer surface (114) has a profile shape that is similar to that of the inner surface (113).

2. The sponge titanium reactor head assembly (11) according to claim 1, characterized in that, The radius of curvature R2 of the contour gradually increases from both sides toward the center point F.

3. The sponge titanium reactor head assembly (11) according to claim 1, characterized in that, The ratio of the thickness L2 of the stainless steel layer (112) to the thickness L1 of the carbon steel layer (111) is (1.5-1.8):

1.

4. The sponge titanium reactor head assembly (11) according to claim 2, characterized in that, The thickness L2 of the stainless steel layer (112) is 20 mm, and the thickness L1 of the carbon steel layer (111) is 12 mm.

5. A sponge titanium reactor, comprising: A reaction vessel (10) having a connection hole; a connection assembly (13) disposed on the vessel (10); a magnesium chloride tube (12) disposed on the inner wall of the reactor vessel (10); a cap assembly (11) disposed at the bottom of the vessel (10), the magnesium chloride tube (12) extending to the inside of the cap assembly (11); characterized in that, The end cap assembly (11) includes a stainless steel layer (112) and a carbon steel layer (111), wherein the thickness L2 of the stainless steel layer (112) is greater than the thickness L1 of the carbon steel layer (111); the carbon steel layer (111) is placed inside the stainless steel layer (112) and is integrated into a single structure, forming an outer surface (114) and an inner surface (113); The inner surface (113) is symmetrical about the center point F. The inner surface (113) includes a central profile and curved profiles extending from the central profile. The central profile has a central radius of curvature R1, and each of the curved profiles has a profile radius of curvature R2. The central radius of curvature R1 is greater than the profile radius of curvature R2. The outer surface (114) has a shape that is similar to that of the inner surface (113).

6. The sponge titanium reactor according to claim 5, characterized in that, The radius of curvature R2 of the contour gradually increases from both sides toward the center point F.

7. The sponge titanium reactor according to claim 5, characterized in that, The ratio of the thickness L2 of the stainless steel layer (112) to the thickness L1 of the carbon steel layer (111) is (1.5-1.8):

1.

8. The sponge titanium reactor according to claim 5, characterized in that, The thickness L2 of the stainless steel layer (112) is 20 mm, and the thickness L1 of the carbon steel layer (111) is 12 mm.

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