Combined fluidized bed distribution plate

Abstract

The utility model provides a combined fluidized bed distribution plate. The combined fluidized bed distribution plate comprises a fluidized bed distribution plate body and a plurality of breather pipes, a plurality of gas distribution holes are formed in the fluidized bed distribution plate body at intervals. The ventilation pipes are detachably arranged on the fluidized bed distribution plate body and correspond to the gas distribution holes one to one, and the ventilation holes of the ventilation pipes are communicated with the gas distribution holes. According to the detachable breather pipe disclosed by the utility model, the damaged breather pipe can be quickly replaced and repaired, the maintenance efficiency of the fluidized bed distribution plate body is improved, and meanwhile, the breather pipe and the gas distribution holes can be kept in an optimal state. The detachable breather pipe is combined with the original gas distribution holes of the fluidized bed distribution plate body for use, so that reverse mixing of materials and gas in a bed layer can be effectively reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of titanium tetrachloride production such as the titanium dioxide chloride industry or the titanium sponge industry, and in particular to a combined fluidized bed distribution plate component. Background Art

[0002] Titanium tetrachloride is the main raw material for industrial products such as titanium dioxide and titanium sponge produced by the chloride process. The main production methods at home and abroad are boiling chlorination and molten salt chlorination. The chlorination furnace used for boiling chlorination generally adopts a fluidized bed. The gas distribution plate is a key component in the fluidized bed reactor. Its functions are mainly reflected in the following three aspects: (1) Uniformly distribute the gas and make the gas pressure drop at both ends of the gas distribution plate channel consistent. (2) Support the material. (3) Rectification and stability, so that the fluidized bed reactor has a good initial fluidization state and forms a good gas-solid contact atmosphere near the distribution plate.

[0003] The gas distribution holes set on the gas distribution plate are easily affected by the fluidizing gas flow and the materials in the bed and are easily worn. The gas distribution plate is an integral part. Once the gas distribution holes are worn, it is very difficult to repair them. Once the gas distribution holes are damaged, their functions will be limited, which will seriously affect the uniform distribution of the fluidizing gas.

[0004] Therefore, there is much room for improvement in the technical solutions of the gas distribution plates in the prior art. Utility Model Content

[0005] In view of the deficiencies in the prior art, the purpose of the utility model is to provide a combined fluidized bed distribution plate assembly, in which a detachable ventilation pipe is arranged on the gas distribution hole of the fluidized bed distribution plate body to prevent the gas distribution hole from directly contacting the material in the bed layer and causing wear and tear that is difficult to repair. When the detachable ventilation pipe is worn, it can be replaced in time and can continue to be used.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] The utility model provides a combined fluidized bed distribution plate assembly, comprising:

[0008] A fluidized bed distribution plate body, wherein a plurality of gas distribution holes are arranged at intervals on the fluidized bed distribution plate body;

[0009] A plurality of ventilation pipes are detachably arranged above the gas distribution holes of the fluidized bed distribution plate body, wherein the ventilation pipes are arranged to correspond one to one with the gas distribution holes, and the ventilation holes of the ventilation pipes are connected with the gas distribution holes.

[0010] In an embodiment of the combined fluidized bed distribution plate assembly of the utility model, a receiving groove is respectively arranged around each of the gas distribution holes on the fluidized bed distribution plate body, and the ventilation pipe is embedded in the receiving groove.

[0011] In an embodiment of the combined fluidized bed distribution plate assembly of the present invention, the upper surface of the ventilation pipe is flush with the upper surface of the fluidized bed distribution plate body.

[0012] In an embodiment of the combined fluidized bed distribution plate assembly of the present invention, the upper portion of the ventilation pipe protrudes upward by a certain distance relative to the upper surface of the fluidized bed distribution plate body.

[0013] In an embodiment of the combined fluidized bed distribution plate assembly of the utility model, the combined fluidized bed distribution plate assembly further comprises a gas delivery pipeline connected to each of the gas distribution holes and the ventilation holes of each of the ventilation pipes, wherein:

[0014] The gas delivery pipeline includes a main pipeline and a plurality of branch pipelines connected to the main pipeline, and one end of the plurality of branch pipelines is connected to the plurality of gas distribution holes in a one-to-one correspondence.

[0015] In an embodiment of the combined fluidized bed distribution plate assembly of the present invention, the other ends of the plurality of branch pipes are configured to be operably opened and closed.

[0016] In an embodiment of the combined fluidized bed distribution plate assembly of the utility model, the inner wall of the ventilation pipe is formed with a gas dispersion member in the shape of an inverted cone, and the gas dispersion member is connected to the ventilation hole of the ventilation pipe and the gas distribution hole, and the top cone angle of the gas dispersion member is 30°-60°.

[0017] In an embodiment of the combined fluidized bed distribution plate assembly of the present invention, the inner diameter of the ventilation hole of the ventilation pipe is smaller than the inner diameter of the gas distribution hole.

[0018] In an embodiment of the combined fluidized bed distribution plate assembly of the present invention, the gas distribution holes are arranged in a matrix distributed manner.

[0019] In an embodiment of the combined fluidized bed distribution plate assembly of the utility model, the fluidized bed distribution plate body and the ventilation pipe are both made of corrosion-resistant alloy.

[0020] Compared with the prior art, the beneficial technical effects of the utility model are:

[0021] The combined fluidized bed distribution plate assembly of the utility model is additionally designed with a plurality of separate detachable vent pipes, which are placed on the gas distribution holes of the fluidized bed distribution plate body and thus cover the gas distribution holes, so as to prevent the original gas distribution holes of the fluidized bed distribution plate body from being worn out due to direct contact with the materials in the bed layer and being difficult to repair. Since the detachable vent pipe is in direct contact with the materials in the bed layer, in the case where the detachable vent pipe is worn out due to the influence of the airflow and the materials in the bed layer, the worn vent pipe can be replaced and can continue to be used.

[0022] The detachable vent pipe of the utility model is conducive to the rapid replacement and repair of the damaged vent pipe, improves the maintenance efficiency of the fluidized bed distribution plate body, and ensures that the vent pipe and the gas distribution hole can be kept in the best state. The detachable vent pipe of the utility model is used in combination with the original gas distribution hole of the fluidized bed distribution plate body, which can also effectively reduce the backflow of materials and gases in the bed layer. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the utility model. For ordinary technicians in this field, other embodiments can be obtained based on these drawings without paying creative work.

[0024] Figure 1 A schematic top view of a fluidized bed distribution plate body of a combined fluidized bed distribution plate assembly provided in one embodiment of the utility model;

[0025] Figure 2 A schematic cross-sectional view of a combined fluidized bed distribution plate assembly provided in accordance with an embodiment of the present invention;

[0026] Figure 3 A schematic cross-sectional view of a combined fluidized bed distribution plate assembly provided in another embodiment of the utility model;

[0027] Figure 4 A schematic cross-sectional view of a ventilation pipe of a combined fluidized bed distribution plate assembly provided in accordance with an embodiment of the utility model. DETAILED DESCRIPTION

[0028] The following is a further detailed description of the embodiments of the present disclosure in conjunction with the accompanying drawings and examples. The detailed description of the following embodiments and the accompanying drawings are used to exemplarily illustrate the principles of the present disclosure, but cannot be used to limit the scope of the present disclosure. The present disclosure can be implemented in many different forms and is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

[0029] The present disclosure provides these embodiments to make the present disclosure thorough and complete, and to fully express the scope of the present disclosure to those skilled in the art. It should be noted that unless otherwise specifically stated, the relative arrangement of the parts and steps, the composition of the materials, the numerical expressions and the numerical values ​​set forth in these embodiments should be interpreted as being merely exemplary, and not as limiting.

[0030] It should be noted that, in the description of the present disclosure, unless otherwise specified, the meaning of "multiple" is greater than or equal to two; the terms "upper", "lower", "left", "right", "inner", "outer", etc., indicating the orientation or positional relationship, are only for the convenience of describing the present disclosure and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present disclosure. When the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0031] In addition, the words "first", "second" and similar words used in the present disclosure do not indicate any order, quantity or importance, but are only used to distinguish different parts. "Vertical" does not mean vertical in the strict sense, but is within the tolerance range. "Parallel" does not mean parallel in the strict sense, but is within the tolerance range. "Include" or "comprising" and similar words mean that the elements before the word include the elements listed after the word, and do not exclude the possibility of including other elements.

[0032] It should also be noted that in the description of the present disclosure, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present disclosure can be understood according to the specific circumstances. When a specific device is described as being located between a first device and a second device, there may or may not be an intermediate device between the specific device and the first device or the second device.

[0033] All terms used in the present disclosure have the same meanings as those understood by those of ordinary skill in the art to which the present disclosure belongs, unless otherwise specifically defined. It should also be understood that terms defined in general dictionaries, for example, should be interpreted as having meanings consistent with their meanings in the context of the relevant technology, and should not be interpreted in an idealized or extremely formal sense, unless explicitly defined as such herein.

[0034] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered part of the specification.

[0035] Example 1

[0036] like Figure 1 and Figure 2 As shown, the utility model provides a combined fluidized bed distribution plate assembly, including a fluidized bed distribution plate body 1 and a plurality of ventilation pipes 2. A plurality of gas distribution holes 3 are arranged at intervals on the fluidized bed distribution plate body 1. The ventilation pipes 2 are detachably arranged above the gas distribution holes 3 of the fluidized bed distribution plate body 1. Among them, the ventilation pipes 2 are arranged to correspond one to one with the gas distribution holes 3, and the ventilation holes 4 of the ventilation pipes 2 are connected to the gas distribution holes 3 on the one hand, and are connected to the outside of the fluidized bed distribution plate body 1 on the other hand, so as not to affect the normal gas circulation of the combined fluidized bed distribution plate assembly.

[0037] In the case where the vent pipe 2 of the utility model is not provided, during use, the gas distribution holes 3 on the fluidized bed distribution plate body 1 will be in direct contact with the material in the bed layer. As time goes by, part or most of the gas distribution holes 3 will be worn due to the influence of the airflow and the material in the bed layer, resulting in the inability to evenly distribute the fluidized gas, which may cause the entire fluidized bed distribution plate body 1 to lose its use value and have to be discarded. This embodiment of the utility model sets the gas distribution holes 3 that are in direct contact with the material in the bed layer below the detachable vent pipe 2, and the gas distribution holes 3 are thus covered by the vent pipe 2, thereby avoiding the situation where the gas distribution holes 3 are in direct contact with the material in the bed layer and wear. Since the vent pipe 2 is set above the gas distribution holes 3 and is in direct contact with the material in the bed layer, when a part of the vent pipe 2 is worn due to the influence of the airflow and the material in the bed layer, only the damaged vent pipe 2 can be processed, for example, the damaged vent pipe 2 is replaced with a new vent pipe 2, and then the original fluidized bed distribution plate body 1 can continue to be used.

[0038] In a preferred embodiment, a receiving groove 5 is provided around each gas distribution hole 3 on the fluidized bed distribution plate body 1, and the vent pipe 2 is embedded in the receiving groove 5. After the vent pipe 2 is placed in the receiving groove 5, it is located above the gas distribution hole 3 and covers the gas distribution hole 3, thereby ensuring that the gas distribution hole 3 is no longer in direct contact with the material in the bed layer, avoiding the situation of being worn due to direct contact with the material. By providing the receiving groove 5, the vent pipe 2 can be easily embedded in the fluidized bed distribution plate body 1, and only simple fastening measures such as spot welding are required to fix the vent pipe 2 to the outer surface of the fluidized bed distribution plate body 1. On the one hand, the spot welding fixation can prevent the fluidized gas from blowing the vent pipe 2 out of the receiving groove 5, and on the other hand, it is convenient to disassemble the damaged vent pipe 2 and replace it with a new one.

[0039] In a preferred embodiment, the combined fluidized bed distribution plate assembly further comprises a gas delivery pipeline connected to each gas distribution hole 3 and each ventilation hole 4 of the ventilation pipe 2. Figure 2 As shown, the gas delivery pipeline includes a main pipeline 6 and a plurality of branch pipelines 7 connected to the main pipeline 6, and one end 8 of the plurality of branch pipelines 7 is connected to the plurality of gas distribution holes 3 and the vent holes 4 in a one-to-one correspondence. In contrast to the vent pipe 2, one end 8 of the plurality of branch pipelines 7 extends from the lower surface of the fluidized bed distribution plate body 1 into the fluidized bed distribution plate body 1, and is arranged to be connected to each gas distribution hole 3. The fluidizing gas flows into the main pipeline 6 along the direction indicated by the arrow 11, and then, the fluidizing gas flows into each branch pipeline 7 along the direction indicated by the arrow 12, and then flows into the gas distribution holes 3 of the fluidized bed distribution plate body 1 and the vent holes 4 of the vent pipe 2 in sequence.

[0040] In a preferred embodiment, if Figure 2 As shown, the upper surface of the ventilation pipe 2 is flush with the upper surface of the fluidized bed distribution plate body 1. In a preferred embodiment, the other end 9 of the plurality of branch pipes 7 is configured to be operably opened and closed. During normal production, the other end 9 of the branch pipe 7 is closed to prevent the fluidizing gas from flowing out of the other end 9. When the ventilation pipe 2 needs to be replaced, after stopping production, the combined fluidized bed distribution plate assembly of the utility model is removed, the other end 9 of the branch pipe 7 is opened, and a tool such as a crowbar is passed into the branch pipe 7 through the other end 9 to push the worn ventilation pipe 2 out of the receiving groove 5 from bottom to top, and then the damaged ventilation pipe 2 is removed, and then the spare ventilation pipe 2 is embedded in the receiving groove 5 and can be reused for production.

[0041] In a preferred embodiment, if Figure 4 As shown, the inner wall of the vent pipe 2 is formed with a gas dispersion member 10 in the shape of an inverted cone, and the gas dispersion member 10 is connected to the vent holes 4 and the gas distribution holes 3 of the vent pipe 2, and is also connected to the outside of the fluidized bed distribution plate body 1. The gas dispersion member 10 has an enlarged end located at the upper part and a reduced end located at the lower part, and the top cone angle α of the gas dispersion member 10 is 30°-60°. This design allows the fluidizing gas to be dispersed into a fan shape when it flows into the reduced end of the gas dispersion member 10 through the gas distribution holes 3 and the vent holes 4 of the vent pipe 2, thereby dispersing the fluidizing gas in the fan-shaped area in a short time, and achieving a more uniform fluidizing gas flow. In addition, the gas dispersion member 10 can be formed integrally with the inner wall of the vent pipe 2, or it can be welded to the inner wall of the vent pipe 2 by a metal wire.

[0042] In a preferred embodiment, the inner diameter of the vent hole 4 of the vent pipe 2 is smaller than the inner diameter of the gas distribution hole 3. Figure 2 As shown, such a design makes the inner wall of the ventilation pipe 2 step-shaped relative to the inner wall of the gas distribution hole 3, thereby facilitating the use of tools such as a crowbar to push the ventilation pipe 2 out of the receiving groove 5.

[0043] In a preferred embodiment, the gas distribution holes 3 are arranged in a matrix distribution. In a preferred embodiment, the fluidized bed distribution plate body 1 and the ventilation pipe 2 are both made of corrosion-resistant alloy.

[0044] The use process of the combined fluidized bed distribution plate assembly of the utility model is as follows: before production, the fluidizing gas is turned on, and then the material is introduced, and the fluidizing gas flows into each gas distribution hole 3 and the vent pipe 2 through the gas delivery pipeline. After stopping production, the combined fluidized bed distribution plate assembly of the utility model is removed from the furnace body, and after checking and confirming the damaged vent pipe 2, the other end 9 of the branch pipe 7 is opened, and the detachable vent pipe 2 is removed using a tool such as a crowbar. Finally, the spare detachable vent pipe 2 is embedded in the fluidized bed distribution plate body 1, and production can be resumed after reinstallation.

[0045] Example 2

[0046] like Figure 1 and Figure 2 As shown, the utility model provides a combined fluidized bed distribution plate assembly, including a fluidized bed distribution plate body 1 and a plurality of ventilation pipes 2. A plurality of gas distribution holes 3 are arranged at intervals on the fluidized bed distribution plate body 1. The ventilation pipes 2 are detachably arranged above the gas distribution holes 3 of the fluidized bed distribution plate body 1. The ventilation pipes 2 are arranged to correspond one to one with the gas distribution holes 3, and the ventilation holes 4 of the ventilation pipes 2 are connected to the gas distribution holes 3.

[0047] In the case where the vent pipe 2 of the utility model is not provided, during use, the gas distribution holes 3 on the fluidized bed distribution plate body 1 will be in direct contact with the material in the bed layer. As time goes by, part or most of the gas distribution holes 3 will be worn due to the influence of the airflow and the material in the bed layer, resulting in the inability to evenly distribute the fluidized gas, which may cause the entire fluidized bed distribution plate body 1 to lose its use value and have to be discarded. This embodiment of the utility model sets the gas distribution holes 3 that are in direct contact with the material in the bed layer below the detachable vent pipe 2, and the gas distribution holes 3 are thus covered by the vent pipe 2, thereby avoiding the situation where the gas distribution holes 3 are in direct contact with the material in the bed layer and wear. Since the vent pipe 2 is set above the gas distribution holes 3 and is in direct contact with the material in the bed layer, when a part of the vent pipe 2 is worn due to the influence of the airflow and the material in the bed layer, only the damaged vent pipe 2 can be processed, for example, the damaged vent pipe 2 is replaced with a new vent pipe 2, and then the original fluidized bed distribution plate body 1 can continue to be used.

[0048] In a preferred embodiment, a receiving groove 5 is provided around each gas distribution hole 3 on the fluidized bed distribution plate body 1, and the vent pipe 2 is embedded in the receiving groove 5. By providing the receiving groove 5, the vent pipe 2 can be easily embedded in the fluidized bed distribution plate body 1, and only simple fastening measures such as spot welding are required to fix the vent pipe 2 to the outer surface of the fluidized bed distribution plate body 1, so it is easy to disassemble and replace the new vent pipe 2. In a preferred embodiment, the inner diameter of the vent hole 4 of the vent pipe 2 is smaller than the inner diameter of the gas distribution hole 3. Figure 2 As shown, such a design makes the inner wall of the ventilation pipe 2 step-shaped relative to the inner wall of the gas distribution hole 3, thereby facilitating the use of tools such as a crowbar to push the ventilation pipe 2 out of the receiving groove 5.

[0049] In a preferred embodiment, if Figure 3 As shown, the upper part of the ventilation pipe 2 protrudes upward a certain distance relative to the upper surface of the fluidized bed distribution plate body 1. In a preferred embodiment, the other end 9 of the plurality of branch pipes 7 is configured to be operably opened and closed. During normal production, the other end 9 of the branch pipe 7 is closed to prevent the fluidizing gas from flowing out of the other end 9. When the ventilation pipe 2 needs to be replaced, after stopping production, the combined fluidized bed distribution plate assembly of the utility model is removed, and then the spot welding connection points between the ventilation pipe 2 and the outer surface of the fluidized bed distribution plate body 1 are first removed, and then the protruding part of the ventilation pipe 2 is clamped with a tool to pull it out of the receiving groove 5, thereby removing it. It should be understood by those skilled in the art that the ventilation pipe 2 can also be pushed out of the receiving groove 5 using tools such as a crowbar, as in Example 1.

[0050] Those skilled in the art should understand that the difference between Example 2 and Example 1 is only the positional relationship of the upper surface (upper part) of the ventilation pipe 2 relative to the upper surface of the fluidized bed distribution plate body 1. In addition, the technical solutions of Example 2 and Example 1 are the same, and more identical parts are not repeated here.

[0051] So far, various embodiments of the present disclosure have been described in detail. In order to avoid obscuring the concept of the present disclosure, some details known in the art are not described. Based on the above description, those skilled in the art can fully understand how to implement the technical solution disclosed here.

[0052] Although some specific embodiments of the present disclosure have been described in detail by way of examples, it should be understood by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the present disclosure. It should be understood by those skilled in the art that the above embodiments may be modified or some technical features may be replaced by equivalents without departing from the scope and spirit of the present disclosure. In particular, the various technical features mentioned in the various embodiments may be combined in any manner as long as there is no structural conflict.

Claims

1. A combined fluidized bed distribution plate, characterized in that: include: A fluidized bed distribution plate body, wherein a plurality of gas distribution holes are arranged at intervals on the fluidized bed distribution plate body; A plurality of ventilation pipes are detachably arranged above the gas distribution holes of the fluidized bed distribution plate body, wherein the ventilation pipes are arranged to correspond one to one with the gas distribution holes, and the ventilation holes of the ventilation pipes are connected with the gas distribution holes.

2. The combined fluidized bed distribution plate according to claim 1, characterized in that: On the fluidized bed distribution plate body, a receiving groove is respectively arranged around each of the gas distribution holes, and the ventilation pipe is embedded in the receiving groove.

3. The combined fluidized bed distribution plate according to claim 2, characterized in that: The upper surface of the ventilation pipe is flush with the upper surface of the fluidized bed distribution plate body.

4. The combined fluidized bed distribution plate according to claim 2, characterized in that: The upper portion of the ventilation pipe protrudes upward by a certain distance relative to the upper surface of the fluidized bed distribution plate body.

5. The combined fluidized bed distribution plate according to claim 3 or 4, characterized in that: It also includes a gas delivery pipeline connected to each of the gas distribution holes and the ventilation hole of each of the ventilation pipes, wherein: The gas delivery pipeline includes a main pipeline and a plurality of branch pipelines connected to the main pipeline, and one end of the plurality of branch pipelines is connected to the plurality of gas distribution holes in a one-to-one correspondence.

6. The combined fluidized bed distribution plate according to claim 5, characterized in that: The other ends of the plurality of branch pipes are configured to be operably opened and closed.

7. The combined fluidized bed distribution plate according to claim 1, characterized in that: The inner wall of the ventilation pipe is formed with a gas dispersion member in the shape of an inverted cone, the gas dispersion member is connected with the ventilation hole and the gas distribution hole of the ventilation pipe, and the top cone angle of the gas dispersion member is 30°-60°.

8. The combined fluidized bed distribution plate according to claim 1, characterized in that: The inner diameter of the ventilation hole of the ventilation pipe is smaller than the inner diameter of the gas distribution hole.

9. The combined fluidized bed distribution plate according to claim 1, characterized in that: The gas distribution holes are arranged in a matrix distributed manner.

10. The combined fluidized bed distribution plate according to claim 1, characterized in that: The fluidized bed distribution plate body and the ventilation pipe are both made of corrosion-resistant alloy.

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