Titanium sponge high-temperature reactor

Abstract

The utility model discloses a titanium sponge high-temperature reactor, and belongs to the technical field of reaction containers. The reaction container comprises at least one composite plate, the composite plate comprises a stainless steel layer on the outer side / a carbon steel layer on the inner side and a connecting structure, and the connecting structure comprises a first groove formed in the end face of the carbon steel layer and a second groove formed in the end face of the stainless steel layer. The first grooves and the second grooves are in transition connection through connecting faces, a first welding area is formed between every two adjacent first grooves, a second welding area is formed between every two adjacent second grooves, and a transition layer is formed between every two adjacent connecting faces. The composite board forming the main body structure adopts the outer stainless steel layer and the inner carbon steel layer, so that the quality of the sponge titanium is effectively ensured, meanwhile, the joint of the composite board adopts a connecting structure, the welding strength of the joint is improved as much as possible, and the safe use of the reactor is ensured.

Description

Technical Field

[0001] The utility model belongs to the technical field of reaction containers, and in particular relates to a sponge titanium high-temperature reactor. Background Art

[0002] "Titanium sponge" generally refers to sponge-like titanium metal produced by, for example, a metal reduction method. Its purity is generally 99.1-99.7% by weight, the total amount of impurity elements is 0.3-0.9% by weight, and the hardness (HB) is 100-157. It is divided into five grades according to the purity. Due to its excellent performance, titanium and titanium alloys are currently widely used in various industries. Currently, titanium sponge is mainly produced by the magnesium method. The reduction distillation step in the production of titanium sponge by the magnesium method requires the use of a reaction vessel. In order to reduce the impact on the quality of titanium sponge, there are certain restrictions on the choice of material for the reaction vessel in the existing technology. Carbon steel plates are generally used to make reactors.

[0003] Currently, to produce such high-purity titanium sponge, the reaction vessel has a two-layer structure, with the inner surface made of carbon steel containing almost no Ni or Cr, and the outer surface made of austenitic stainless steel such as SUS304 or SUS316. Japanese Patent Application No. JP08490896 discloses a reaction vessel for producing titanium sponge, wherein a thickened portion is provided on part or all of the outer periphery of the upper half of the reaction vessel. The thickness of the thickened portion is 1 mm or more and is less than 30% of the thickness of the reaction vessel body, and the thickened portion is made of stainless steel or heat-resistant steel containing 22% or more Cr. Japanese Patent Application No. JP2001169835 discloses a titanium sponge manufacturing apparatus, wherein the vessel body of the reaction vessel A is made of a composite material of carbon steel on the inner surface side and stainless steel on the outer surface side. The lid is provided with a forced cooling mechanism, and at least part or all of the components of the lid that come into contact with the reaction atmosphere are made of a composite material of carbon steel on the front surface and carbon steel on the back surface, with the back surface facing the reaction atmosphere. Chinese patent application number CN202210171040.7 discloses a composite plate and a titanium sponge reactor. The composite plate includes a stainless steel layer and a carbon steel layer. There is a connecting layer between the stainless steel layer and the carbon steel layer to composite the two. The ratio between the thickness of the stainless steel layer and the thickness of the carbon steel layer is 4:1-1:20, and the thickness of the stainless steel layer and the carbon steel layer is 28-50 mm.

[0004] However, the composite plate disclosed above needs to be manufactured to obtain the container body of the reactor. For the composite plate, the welding strength at its joints cannot be lower than the strength of the reactor body, resulting in the service life of the reactor failing to meet the use requirements, which has become an urgent problem to be solved. Summary of the Invention

[0005] 1. Problems to be solved

[0006] In response to the above technical problems, the purpose of the present invention is to provide a sponge titanium high-temperature reactor so that the overall structure has a consistent strength, thereby ensuring that the service life reaches the expected design.

[0007] 2. Technical solution

[0008] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0009] The purpose of the first aspect of the present utility model is to provide a sponge titanium high-temperature reactor, comprising at least one composite plate, wherein the composite plate includes an outer stainless steel layer, an inner carbon steel layer and a connecting structure, wherein the connecting structure includes a first groove formed on the end face of the carbon steel layer and a second groove formed on the end face of the stainless steel layer, the first groove and the second groove are transitionally connected through a connecting surface, a first welding area is formed between the two adjacent first grooves, a second welding area is formed between the two adjacent second grooves, and a transition layer is formed between the adjacent connecting surfaces.

[0010] According to any embodiment of the first aspect of the purpose of the present utility model, the connecting surface is a step surface formed at the upper end of the back side of the first groove, the height of the step surface is 1-2mm, the width is 3-4mm, and the transition layer at the step surface is basically flush with the mating surface of the stainless steel layer.

[0011] In the present invention, unless otherwise stated, the “carbon steel” used herein refers to an iron-carbon alloy having a carbon mass fraction of less than 2.11%, which generally also contains a small amount of silicon, manganese, sulfur, phosphorus and other elements, and may also be referred to as carbon steel.

[0012] According to the composite plate of the present invention, the stainless steel and carbon steel are both in the form of plates.

[0013] Unless otherwise specified, the "welding" in the present invention refers to conventional welding processes other than explosive welding, and conventional welding processes may include at least one of gas welding, manual arc welding, resistance welding, arc welding, argon arc welding, induction welding and laser welding.

[0014] According to any implementation scheme of the first aspect of the purpose of the present utility model, the first bevel and the second bevel are arranged opposite to each other, and the second bevel is connected to the step surface.

[0015] According to any embodiment of the first aspect of the present invention, the slopes of the first groove and the second groove are the same or different.

[0016] According to any implementation scheme of the first aspect of the present utility model, the slope of the first groove is 32±2.5°, and the slope of the second groove is 32±2.5°.

[0017] According to any embodiment of the first aspect of the present invention, the connecting surface is a straight surface extending from the first groove to the second groove, the height of the straight surface is 1-2 mm, and the transition layer at the straight surface is basically flush with the matching surface of the stainless steel layer.

[0018] According to any implementation scheme of the first aspect of the purpose of the present utility model, the two adjacent first grooves and the two adjacent second grooves are symmetrically arranged.

[0019] According to any embodiment of the first aspect of the present invention, in order to reduce production costs, increase the service life of a high-temperature reactor manufactured using the composite plate, and enhance the deformation resistance of the high-temperature reactor, the carbon steel layer has a thickness of 5-15 mm and the stainless steel layer has a thickness of 12-25 mm. Preferably, the carbon steel layer has a thickness of 12 mm and the stainless steel layer has a thickness of 20 mm.

[0020] According to any implementation scheme of the first aspect of the purpose of the present utility model, the transition layer is arc welded, and the arc welding wire is made of ER309 stainless steel or wear-resistant flux-cored gas shielded welding wire HRJY-101.

[0021] According to any embodiment of the first aspect of the purpose of the present utility model, the material of the stainless steel layer is selected from one of SUS321, SUS310, SUS304, SUS31, and HRJY1, and the material of the carbon steel layer is selected from one of Q245R, Q345D, Q345E, and Q345R.

[0022] The above materials are all commercially available products, where "HR" refers to heat-resistant steel, JY refers to the abbreviation of Jiuyi Company, and HRJY-101 and HRJY1 are both models of commercially available products.

[0023] 3. Beneficial effects

[0024] Compared with the prior art, the beneficial effects of the present invention are:

[0025] (1) The composite plate constituting the main structure of the titanium sponge high-temperature reactor of the present invention adopts an outer stainless steel layer and an inner carbon steel layer, which effectively ensures the quality of the titanium sponge. At the same time, the joints of the composite plate adopt a connection structure to improve the welding strength of the joints as much as possible, so that the use strength of the overall structure tends to be consistent, thereby ensuring that the service life reaches the expected design and the safe use of the reactor;

[0026] (2) The sponge titanium high-temperature reactor of the present invention forms a step surface on the carbon steel layer, and forms a transition layer on the step surface, and then welds the groove. The transition layer can improve the dilution rate. The second welding area is first welded, and then the first welding area is welded. This not only reduces the workload, but also reduces the heat output, and minimizes the influence of the welding sequence on the joint strength, thereby ensuring the safety strength of the joint and enabling the reactor to be safely produced for a long time. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The technical solution of the present invention 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 the present invention. Furthermore, unless otherwise specified, these drawings are intended only to conceptually illustrate the structures described herein and are not necessarily drawn to scale.

[0028] Figure 1 This is a schematic structural diagram of a titanium sponge high-temperature reactor according to Example 1 of the present utility model;

[0029] Figure 2 This is a partial schematic diagram of the composite plate of the titanium sponge high temperature reactor of Example 1 of the present utility model;

[0030] Figure 3 This is a schematic structural diagram of a titanium sponge high-temperature reactor according to Example 2 of the present utility model;

[0031] Figure 4 This is a partial schematic diagram of the composite plate of the titanium sponge high temperature reactor of Example 2 of the present utility model;

[0032] Description of reference numerals:

[0033] 10. Composite plate; 11. Stainless steel layer; 12. Carbon steel layer;

[0034] 20. Connection structure; 21. First groove; 22. Second groove; 23. Joint surface; 24. First welding area; 25. Second welding area; 26. Transition layer. DETAILED DESCRIPTION

[0035] The present disclosure may be more readily understood by reference to the following description in conjunction with the accompanying drawings and examples, all of which constitute a part of this disclosure. It should be understood that the present disclosure is not limited to the specific products, methods, conditions, or parameters described and / or illustrated herein. Further, the terms used herein are for the purpose of describing specific embodiments by way of example only and are not intended to be limiting unless otherwise indicated.

[0036] It should also be understood that, for the sake of clarity, certain features of the present disclosure may be described herein in the context of separate embodiments, but may also be provided in combination with each other in a single embodiment. That is, unless clearly incompatible or specifically not included, each separate embodiment is considered to be combinable with any other embodiment, and the combination is considered to represent another different embodiment. Conversely, for the sake of simplicity, various features of the present disclosure described in the context of a single embodiment may also be provided individually or in any sub-combination. Finally, although a particular embodiment may be described as part of a series of steps or part of a more general structure, each step or sub-structure itself may also be considered to be an independent embodiment.

[0037] Unless otherwise indicated, it should be understood that each individual element in a list and each combination of individual elements in that list will be interpreted as a different embodiment. For example, a list of embodiments expressed as "A, B, or C" should be interpreted to include embodiments "A," "B," "C," "A or B," "A or C," "B or C," or "A, B, or C."

[0038] In this disclosure, the singular forms of the articles "a," "an," and "the" also include the corresponding plural reference, and a reference to a specific value includes at least that specific value unless the context clearly dictates otherwise. Thus, for example, a reference to "a substance" is a reference to at least one of that substance and equivalents thereof.

[0039] Terms including ordinal numbers such as "first" and "second" may be used to explain various components or fluids, but these components and fluids are not limited by these terms. Therefore, without departing from the teachings of the present disclosure, these terms are only used to distinguish the component / fluid from another component / fluid.

[0040] When items are described by using the conjunction terms "... and / or..." etc., the description should be understood to include any one and all combinations of one or more of the associated listed items.

[0041] In general, the use of the term "about" indicates an approximate value that can vary depending on the desired properties obtained by the disclosed subject matter and will be interpreted in a context-dependent manner based on function. Therefore, one of ordinary skill in the art will be able to interpret a certain degree of difference on a case-by-case basis. In some cases, the number of important 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 in a range of values ​​can be used to determine the range of differences allowed by the term "about". Further, all ranges in this disclosure are inclusive and combinable, and reference to a value stated in a range includes every value within that range.

[0042] 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; any and all combinations of terms and / or terms used herein include one or more of the associated listed items.

[0043] Example 1

[0044] like Figures 1 to 2 As shown, the sponge titanium high-temperature reactor of this embodiment includes two composite plates 10, wherein the composite plates 10 include an outer stainless steel layer 11, an inner carbon steel layer 12 and a connecting structure 20, wherein the connecting structure 20 includes a first groove 21 formed on the end face of the carbon steel layer 12 and a second groove 22 formed on the end face of the stainless steel layer 11, wherein the first groove 21 and the second groove 22 are transitionally connected via a connecting surface 23, a first welding area 24 is formed between the two adjacent first grooves 21, a second welding area 25 is formed between the two adjacent second grooves 22, and a transition layer 26 is formed between the adjacent connecting surfaces 23.

[0045] exist Figure 2 In the embodiment, the connecting surface 23 is a stepped surface formed at the upper end of the back side of the first groove 21. The stepped surface has a height of 2 mm and a width of 3 mm. The transition layer 26 at the stepped surface is substantially flush with the mating surface of the stainless steel layer 11. Substantially flush here means that there may be pits and local unevenness.

[0046] In this embodiment, the first bevel 21 and the second bevel 22 are arranged opposite to each other, and the second bevel 22 is connected to the step surface. The first bevel 21 and the second bevel 22 have the same or different slopes. Preferably, the slope a of the first bevel 21 is 33°, and the slope a of the second bevel 22 is 33°.

[0047] The transition layer 26 is formed by arc welding, and the material of the arc welding wire is 309 or 619.

[0048] In this embodiment, the stainless steel and carbon steel are both in the form of plates. Unless otherwise specified, the term "welding" in this utility model refers to conventional welding processes other than explosive welding, and conventional welding processes may include at least one of gas welding, manual arc welding, resistance welding, arc welding, argon arc welding, induction welding, and laser welding.

[0049] Preferably, according to the composite plate 10 described in this embodiment, in order to reduce production costs, ensure that the service life of the reactor prepared using the composite plate 10 described in the utility model is increased, and ensure that the reactor's anti-deformation ability is enhanced, the thickness L2 of the carbon steel layer 12 is 12 mm.

[0050] Preferably, according to the composite plate 10 described in the present invention, in order to ensure that the service life of the reactor prepared using the composite plate 10 described in the present invention is increased, ensure that the reactor's anti-deformation ability is enhanced, and improve the "peeling" phenomenon of the reactor, the thickness L1 of the stainless steel layer 11 is 20 mm.

[0051] In the embodiments of the present invention, unless otherwise specified, the carbon steel plate used is of model Q235A, purchased from Chongqing Iron and Steel Company; the stainless steel plate used is of model 316 stainless steel, purchased from Taiyuan Iron and Steel Company.

[0052] The outer stainless steel layer 11 and the inner carbon steel layer 12 are composited by explosion. The specific preparation method includes the following steps: the material of the stainless steel layer 11 is stainless steel HRJY1, and the material of the carbon steel layer 12 is Q235A. The steps include: (1) surface polishing; (2) explosive welding and surface protection.

[0053] Example 2

[0054] like Figure 3 and Figure 4 As shown, the sponge titanium high-temperature reactor of this embodiment includes two composite plates 10, wherein the composite plates 10 include an outer stainless steel layer 11 / an inner carbon steel layer 12 and a connecting structure 20, wherein the connecting structure 20 includes a first groove 21 formed on the end face of the carbon steel layer 12 and a second groove 22 formed on the end face of the stainless steel layer 11, wherein the first groove 21 and the second groove 22 are transitionally connected via a connecting surface 23, a first welding area 24 is formed between the two adjacent first grooves 21, a second welding area 25 is formed between the two adjacent second grooves 22, and a transition layer 26 is formed between the adjacent connecting surfaces 23.

[0055] exist Figure 4 In the embodiment, the connecting surface 23 is a straight surface extending from the first groove 21 to the second groove 22 , the height of the straight surface is 2 mm, and the transition layer 26 at the straight surface is substantially flush with the matching surface of the stainless steel layer 11 .

[0056] Furthermore, the two adjacent first grooves 21 and the two adjacent second grooves 22 are symmetrically arranged.

[0057] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. A titanium sponge high temperature reactor comprising at least one composite plate (10), wherein the composite plate (10) comprises an outer stainless steel layer (11) and an inner carbon steel layer (12), characterized in that: Also included is a connecting structure (20), The connection structure (20) includes a first groove (21) formed on the end surface of the carbon steel layer (12) and a second groove (22) formed on the end surface of the stainless steel layer (11), wherein the first groove (21) and the second groove (22) are transitionally connected via a connecting surface (23); A first welding area (24) is formed between two adjacent first grooves (21), a second welding area (25) is formed between the two adjacent second grooves (22), and a transition layer (26) is formed between the adjacent connecting surfaces (23).

2. The titanium sponge high temperature reactor according to claim 1, characterized in that: The connecting surface (23) is a step surface formed at the upper end of the back side of the first groove (21), the height of the step surface is 1-2 mm, the width is 3-4 mm, and the transition layer (26) at the step surface is substantially flush with the matching surface of the stainless steel layer (11).

3. The titanium sponge high temperature reactor according to claim 2, characterized in that: The first bevel (21) and the second bevel (22) are arranged opposite to each other, and the second bevel (22) is connected to the step surface.

4. The titanium sponge high temperature reactor according to claim 3, characterized in that: The first groove (21) and the second groove (22) have the same or different inclinations.

5. The titanium sponge high temperature reactor according to claim 4, characterized in that: The slope of the first groove (21) is 32±2.5°, and the slope of the second groove (22) is 32±2.5°.

6. The titanium sponge high temperature reactor according to claim 1, characterized in that: The connecting surface (23) is a straight surface extending from the first groove (21) to the second groove (22), the height of the straight surface is 1-2 mm, and the transition layer (26) at the straight surface is substantially flush with the matching surface of the stainless steel layer (11).

7. The titanium sponge high temperature reactor according to claim 6, characterized in that: The two adjacent first bevels (21) and the two adjacent second bevels (22) are symmetrically arranged.

8. The titanium sponge high temperature reactor according to any one of claims 1 to 7, characterized in that: The thickness of the carbon steel layer (12) is 12 mm, and the thickness of the stainless steel layer (11) is 20 mm.

9. The titanium sponge high temperature reactor according to claim 8, characterized in that: The transition layer (26) is formed by arc welding, and the material of the arc welding wire is 309 or 619.

10. The titanium sponge high temperature reactor according to claim 9, characterized in that: The material of the stainless steel layer (11) is selected from one of SUS321, SUS310, SUS304, and SUS316, and the material of the carbon steel layer (12) is selected from one of Q245R, Q345D, Q345E, and Q345R.

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