Coal liquefaction reactor inlet gas distribution structure anti-coke optimization device

Abstract

The utility model provides a kind of anti-accumulation carbon optimization device of coal liquefaction reactor gas inlet distribution structure belongs to coal chemical technology field, the device includes gas distribution mechanism, spoiler mechanism, bearing mechanism and reinforcing ring, hydrogen enters coal slurry tank by distributor in working, since spoiler and distributor are set one by one, and spoiler is set obliquely relative to the plane where mounting ring one and mounting ring two are located, so that hydrogen can push spoiler, to drive spoiler mechanism whole to rotate, several spoilers can fully mix hydrogen and coal slurry in reaction tank, fully contact with catalyst block, enhance the mixing effect between hydrogen, coal slurry and catalyst block, the rotation of spoiler mechanism and bearing mechanism can make reaction more fully and evenly, reduce the possibility of local carbon deposition, at the same time, airflow and liquid flow change produced by rotation also help to take away the substance that may form carbon deposition in time, further reduce the risk of carbon deposition.

Description

Technical Field

[0001] This utility model relates to the field of coal chemical technology, and in particular to an anti-carbon deposition optimization device for the gas inlet distribution structure of a coal liquefaction reactor. Background Technology

[0002] Chinese Patent CN210994229U discloses a reactor for coal liquefaction, including a reaction tank, a gas-liquid separation mechanism for separating reaction products and coal slurry, a feeding mechanism for feeding materials, and a catalytic mechanism. The gas-liquid separation mechanism is connected to one side of the reaction tank, the catalytic mechanism is installed on the reaction tank, and the feeding mechanism is located below the reaction tank. The reactor also includes a circulation mechanism for circulating the reaction and a stirring mechanism for stirring the reactants. The circulation mechanism includes a circulation pipe, a circulation hood, a circulation pump, a circulation outlet, and a circulation inlet. The circulation pipe passes through the reaction tank and connects to the circulation pump on one side. A circulation inlet and a circulation outlet are respectively located at both ends of the circulation pipe. A circulation hood is fitted over the circulation inlet. The stirring mechanism is installed above the reaction tank. This design avoids sedimentation or coking in the reactor during the liquefaction reaction, ensuring the stability of the device and improving efficiency.

[0003] The shortcomings of the above-mentioned existing technical solutions are as follows: by introducing the catalyst at the catalyst inlet at the top, and setting the gas distribution mechanism and feed pipe in the lower part of the reaction tank, the coal slurry and hydrogen react insufficiently at the gas distribution mechanism and are prone to generating by-products. At high temperature, the carbon polymerization is accelerated, causing the surface of the gas distribution mechanism to carbonize with a gel, which will affect the normal operation of the device in the long run. Utility Model Content

[0004] To address the aforementioned problems, this invention provides an anti-carbon deposition optimization device for the gas inlet distribution structure of a coal liquefaction reactor, thereby resolving the problems existing in the prior art.

[0005] According to a first aspect of this utility model, an anti-carbon deposition optimization device for the gas inlet distribution structure of a coal liquefaction reactor is provided, comprising:

[0006] The gas distribution mechanism includes a gas distribution plate, on which several distributors are evenly distributed in a ring.

[0007] The turbulence mechanism is rotatably mounted on the air distribution plate and is located on the same side as the distributor. The turbulence mechanism includes several turbulence plates that are evenly distributed in a ring. Each turbulence plate is corresponding to one of the distributors. Each turbulence plate has a mounting ring 1 and a mounting ring 2 at its two ends. The turbulence plate is inclined relative to the plane where the mounting ring 1 and the mounting ring 2 are located. A support ring is coaxially arranged inside the mounting ring 1.

[0008] Several supporting mechanisms are evenly distributed in a ring on the supporting ring. Each supporting mechanism includes a supporting plate with a catalyst block embedded in it. One end of the supporting plate is fixedly connected to a connecting block one, and the other end of the supporting plate is fixedly connected to a connecting block two.

[0009] As a further embodiment of this utility model: a number of supporting mechanisms are provided with reinforcing rings, and a number of connecting holes are evenly distributed on the reinforcing rings.

[0010] As a further embodiment of this utility model: several connecting studs are evenly distributed and fixedly connected on the supporting ring, a connecting screw hole 1 is provided on the connecting block 1, and a connecting screw hole 2 is provided on the connecting block 2.

[0011] As a further embodiment of this utility model: the first connecting block is threadedly connected to the first connecting screw hole and the second connecting block is provided with a connecting screw rod between the second connecting block and the reinforcing ring, and the connecting screw rod passes through the connecting hole and is threadedly connected to the second connecting screw hole on the second connecting block.

[0012] As a further embodiment of this utility model: a connecting sleeve is fixedly connected to the air distribution plate, and an insertion hole is provided on the side end of the connecting sleeve.

[0013] As a further embodiment of this utility model: a connecting plate is coaxially arranged inside the supporting ring, a connecting shaft is fixedly connected to the bottom surface of the connecting plate, and a pin hole is opened on the side end of the connecting shaft.

[0014] As a further embodiment of this utility model: the connecting shaft is sleeved inside the connecting sleeve, and a pin is provided between the connecting shaft and the connecting sleeve, with the pin penetrating the insertion hole and being inserted into the pin hole.

[0015] As a further embodiment of this utility model: a support rod is connected between the mounting ring, the support ring, and the connecting plate.

[0016] The beneficial effects of this utility model are:

[0017] In operation, hydrogen enters the coal slurry tank through a distributor. Because the baffles are positioned in a one-to-one correspondence with the distributor and are inclined relative to the plane of mounting rings one and two, the hydrogen can push the baffles, causing the entire baffle mechanism to rotate. Several baffles can thoroughly mix the hydrogen and coal slurry within the reaction tank, ensuring full contact with the catalyst blocks and enhancing the mixing effect. The rotation of the baffle mechanism and the supporting mechanism makes the reaction more complete and uniform, reducing the possibility of localized carbon buildup. Simultaneously, the changes in airflow and liquid flow generated by the rotation also help to promptly remove substances that may form carbon deposits, further reducing the risk of carbon buildup. Attached Figure Description

[0018] Figure 1This is a three-dimensional structural schematic diagram of an anti-carbon deposition optimization device for the gas inlet distribution structure of a coal liquefaction reactor according to the present invention;

[0019] Figure 2 This is a partial three-dimensional structural schematic diagram of an anti-carbon deposition optimization device for the gas inlet distribution structure of a coal liquefaction reactor according to the present invention.

[0020] Figure 3 This invention provides an anti-carbon deposition optimization device for the gas inlet distribution structure of a coal liquefaction reactor. Figure 2 Enlarged structural diagram at point A in the middle;

[0021] Figure 4 This is a three-dimensional structural schematic diagram of the turbulence mechanism of an anti-carbon deposition optimization device for the gas inlet distribution structure of a coal liquefaction reactor according to the present invention;

[0022] Figure 5 This is a three-dimensional structural schematic diagram of the gas distribution mechanism of an anti-carbon deposition optimization device for a coal liquefaction reactor gas distribution structure according to the present invention.

[0023] Figure 6 This is a three-dimensional structural diagram of the support mechanism of an anti-carbon deposition optimization device for an air inlet distribution structure of a coal liquefaction reactor according to the present invention.

[0024] List of reference numerals in the attached diagram:

[0025] 1. Gas distribution mechanism; 11. Gas distribution plate; 12. Distributor; 13. Connecting sleeve; 14. Insertion hole; 2. Baffle mechanism; 21. Mounting ring one; 22. Mounting ring two; 23. Baffle plate; 24. Connecting rod one; 25. Connecting rod two; 26. Connecting shaft; 27. Pin hole; 28. Support rod; 29. ​​Connecting plate; 210. Supporting ring; 211. Connecting stud; 3. Bearing mechanism; 31. Bearing plate; 32. Catalyst block; 33. Connecting block one; 34. Connecting block two; 4. Reinforcing ring; 5. Connecting hole. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0027] In the description of this utility model, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0028] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0029] Reference Figures 1 to 6 This utility model provides an anti-carbon deposition optimization device for the gas inlet distribution structure of a coal liquefaction reactor, comprising:

[0030] The air distribution mechanism 1 and the turbulence mechanism 2 are provided. The air distribution mechanism 1 includes an air distribution plate 11, on which a plurality of distributors 12 are evenly distributed in a ring. The turbulence mechanism 2 is rotatably mounted on the air distribution plate 11 and is located on the same side as the distributors 12. The turbulence mechanism 2 includes a plurality of turbulence plates 23 evenly distributed in a ring. Each turbulence plate 23 corresponds to one of the distributors 12. Each end of the turbulence plate 23 is provided with a mounting ring 1 21 and a mounting ring 22. The turbulence plate 23 is inclined relative to the plane in which the mounting ring 1 21 and the mounting ring 22 are located. Each end of the turbulence plate 23 is fixedly connected to a connecting rod 1 24 and a connecting rod 25. The turbulence plate 23 is fixedly connected to the mounting ring 1 21 and the mounting ring 22 through the connecting rod 25 and the connecting rod 1 24, respectively. A support ring 210 is coaxially arranged inside the mounting ring 1 21.

[0031] Several support mechanisms 3 are evenly distributed in a ring on the support ring 210. Each support mechanism 3 includes a support plate 31, on which a catalyst block 32 is embedded. The catalyst block 32 uses iron oxide-containing minerals (such as pyrite), iron salts, or natural pyrite from coal as the active component, exhibiting good catalytic performance and effectively promoting the coal liquefaction reaction. The catalyst block 32 is tightly embedded in the support plate 31, ensuring its stability during the reaction process and preventing displacement or detachment in high-speed airflow and complex reaction environments. Simultaneously, the support plate 31 provides good support and protection for the catalyst block 32, enabling it to better exert its catalytic effect.

[0032] In the actual coal liquefaction reaction, the gas distribution mechanism 1 is installed inside the reaction tank. The catalyst block 32 cooperates with the gas distribution mechanism 1 and the turbulence mechanism 2. Hydrogen enters the coal slurry tank through the distributor 12. Since the turbulence plates 23 are arranged in a one-to-one correspondence with the distributor 12, and the turbulence plates 23 are inclined relative to the plane of the mounting ring 21 and the mounting ring 22, the hydrogen can push the turbulence plates 23, thereby driving the entire turbulence mechanism 2 to rotate. Several turbulence plates 23 can fully mix the hydrogen and coal slurry in the reaction tank, and fully contact the catalyst block 32 to enhance the hydrogen-coal mixing effect. The mixing effect between the slurry and the catalyst block 32 improves the reaction efficiency. At the same time, the supporting mechanism 3 rotates synchronously with the rotation of the turbulence mechanism 2, making the distribution of the catalyst block 32 in the reaction tank more uniform. The original situation of excessively high or low local catalyst concentration is improved, making the catalytic environment in the entire reaction tank more stable and balanced. During the rotation, the supporting plate 31 can further stabilize the catalyst block 32. Even under the dual action of hydrogen propulsion and coal slurry flow, it can be ensured that the catalyst block 32 will not easily detach from the supporting plate 31.

[0033] When hydrogen and coal slurry are fully mixed and react with catalyst block 32, if the reaction is uneven, carbon deposits can easily form in some parts of the reaction vessel, thus affecting the normal progress of the reaction. The rotation of the turbulence mechanism 2 and the support mechanism 3 can make the reaction more complete and uniform, reducing the possibility of local carbon deposits. At the same time, the changes in airflow and liquid flow generated by the rotation can also help to remove substances that may form carbon deposits in time, further reducing the risk of carbon deposits.

[0034] Because catalyst block 32 uses iron oxide-containing minerals, iron salts, or natural pyrite from coal as the active component, its surface area in contact with hydrogen and coal slurry changes continuously during rotation, thus maintaining high activity. The constant exposure of new surfaces to the reactants allows the catalytic reaction to proceed continuously and efficiently. The rotation also provides a degree of self-cleaning, promptly removing impurities or reaction byproducts adhering to the surface, ensuring the long-term stability of catalyst block 32.

[0035] The active components of catalyst block 32 are gradually consumed during the reaction. In order to ensure the continuous and efficient reaction, catalyst block 32 needs to be replaced regularly. Therefore, several supporting mechanisms 3 are provided with reinforcing rings 4. Several connecting holes 5 are evenly distributed and opened on the reinforcing rings 4. Several connecting studs 211 are evenly distributed and fixedly connected on the supporting ring 210. One end of the supporting plate 31 is fixedly connected to connecting block 1 33 and the other end of the supporting plate 31 is fixedly connected to connecting block 2 34. Connecting block 1 33 is provided with connecting screw hole 1 and connecting block 2 34 is provided with connecting screw hole 2. Connecting block 1 33 is threadedly connected to connecting stud 211 through connecting screw hole 1. A connecting screw is provided between connecting block 2 34 and reinforcing ring 4. The connecting screw passes through the connecting hole 5 and is threadedly connected to connecting screw hole 2 on connecting block 2 34.

[0036] The above connection method allows the supporting mechanism 3 to be securely installed between the supporting ring 210 and the reinforcing ring 4. When the catalyst block 32 needs to be replaced, simply unscrew the connecting screw from the connecting hole 5 and the second connecting screw hole, and unscrew the connecting block 33 from the connecting stud 211 to remove the supporting mechanism 3 from the entire device. This is convenient and quick. The reinforcing ring 4 not only improves the stability of the supporting mechanism 3 installation but also makes the various supporting mechanisms 3 form a whole, enhancing the structural strength. After replacing the catalyst block 32, the supporting mechanism 3 is reinstalled between the supporting ring 210 and the reinforcing ring 4 in reverse order, and it can be put into use again. This method offers great convenience in actual operation, greatly reducing the difficulty and cost of equipment maintenance, and ensuring that the coal liquefaction reaction can proceed continuously, stably, and efficiently. At the same time, because the installation and disassembly of the supporting mechanism 3 are relatively simple, the number and distribution of the catalyst blocks 32 can be flexibly adjusted according to the actual reaction conditions to further optimize the reaction effect. This device allows for convenient and quick replacement of the catalyst blocks 32, reducing equipment downtime and maintenance costs.

[0037] To facilitate the assembly and disassembly of the air distribution mechanism 1 and the turbulence mechanism 2, a connecting sleeve 13 is fixedly connected to the air distribution plate 11. The connecting sleeve 13 has a insertion hole 14 on its side. A connecting plate 29 is coaxially arranged inside the support ring 210. A support rod 28 is connected between the mounting ring 21, the support ring 210 and the connecting plate 29. A connecting shaft 26 is fixedly connected to the bottom surface of the connecting plate 29. A pin hole 27 is opened on the side of the connecting shaft 26. The connecting shaft 26 is sleeved inside the connecting sleeve 13. A pin is provided between the connecting shaft 26 and the connecting sleeve 13. The pin passes through the insertion hole 14 and is inserted into the pin hole 27.

[0038] The detachable connection between the gas distribution mechanism 1 and the flow disturbance mechanism 2 is achieved through the engagement of the pin with the insertion hole 14 and the pin hole 27. When individual maintenance, repair, or replacement of the gas distribution mechanism 1 or the flow disturbance mechanism 2 is required, the operator can easily separate them by simply pulling out the pin, making the operation very convenient. Furthermore, the pin connection method ensures the connection stability of the gas distribution mechanism 1 and the flow disturbance mechanism 2 during normal operation, ensuring that gas can enter the flow disturbance mechanism 2 evenly from the gas distribution mechanism 1, providing good gas distribution conditions for the coal liquefaction reaction. During installation, simply insert the connecting shaft 26 accurately into the connecting sleeve 13, align the pin hole 27 with the insertion hole 14, and then insert the pin to complete the connection between the gas distribution mechanism 1 and the flow disturbance mechanism 2. This further improves the efficiency and flexibility of the equipment, and reduces the operating cost and maintenance difficulty.

[0039] Workflow:

[0040] The gas distribution mechanism 1 is installed inside the reaction tank. The catalyst block 32 cooperates with the gas distribution mechanism 1 and the turbulence mechanism 2. Hydrogen enters the coal slurry tank through the distributor 12. Since the turbulence plates 23 are arranged in a one-to-one correspondence with the distributor 12, and the turbulence plates 23 are inclined relative to the plane where the mounting ring 1 21 and mounting ring 22 are located, the hydrogen can push the turbulence plates 23, thereby driving the entire turbulence mechanism 2 to rotate. Several turbulence plates 23 can fully mix the hydrogen and coal slurry in the reaction tank and fully contact the catalyst block 32, enhancing the mixing effect between hydrogen, coal slurry and catalyst block 32. The turbulence mechanism 2 and the supporting mechanism 3... Rotation ensures a more complete and uniform reaction, reducing the possibility of localized carbon buildup. Simultaneously, the changes in air and liquid flow generated by rotation help remove potential carbon-forming substances, further mitigating the risk of carbon buildup. When catalyst block 32 needs replacement, simply unscrew the connecting screw from connecting hole 5 and connecting screw hole 2, and unscrew connecting block 33 from connecting stud 211 to easily and quickly remove the supporting mechanism 3 from the entire device. The reinforcing ring 4 not only improves the stability of the supporting mechanism 3 installation but also forms a unified whole among the various supporting mechanisms 3, enhancing structural strength. After replacing catalyst block 32, the supporting mechanism 3 is reinstalled between the support ring 210 and reinforcing ring 4 following the reverse steps for continued operation. This design offers excellent convenience in practical operation, significantly reducing the difficulty and cost of equipment maintenance and ensuring the continuous, stable, and efficient operation of the coal liquefaction reaction. Meanwhile, since the installation and disassembly of the support mechanism 3 are relatively simple, the number and distribution of catalyst blocks 32 can be flexibly adjusted according to the actual reaction conditions to further optimize the reaction effect. This device can easily and quickly replace the catalyst blocks 32, reducing equipment downtime and maintenance costs.

[0041] It should be noted that not all steps and modules in the above processes and system structure diagrams are mandatory; some steps or modules can be omitted as needed. The execution order of each step is not fixed and can be adjusted as required. The system structure described in the above embodiments can be a physical structure or a logical structure. That is, some modules may be implemented by the same physical entity, or some modules may be implemented by multiple physical entities, or they may be jointly implemented by certain components in multiple independent devices.

[0042] In the above embodiments, the hardware modules can be implemented mechanically or electrically. The present invention has been described and illustrated in detail above with reference to the accompanying drawings and preferred embodiments. However, the present invention is not limited to these disclosed embodiments. Based on the above embodiments, those skilled in the art will understand that more embodiments of the present invention can be obtained by combining the code review methods in the different embodiments described above, and these embodiments are also within the protection scope of the present invention.

Claims

1. A device for optimizing the air inlet distribution structure of a coal liquefaction reactor to prevent carbon buildup, characterized in that, include: The gas distribution mechanism (1) includes a gas distribution plate (11), on which a number of distributors (12) are evenly distributed in a ring. The turbulence mechanism (2) is rotatably mounted on the air distribution plate (11). The turbulence mechanism (2) is mounted on the same side as the distributor (12). The turbulence mechanism (2) includes several turbulence plates (23) evenly distributed in a ring. The turbulence plates (23) are arranged one-to-one with the distributor (12). The two ends of the turbulence plates (23) are respectively provided with mounting ring one (21) and mounting ring two (22). The turbulence plates (23) are inclined relative to the plane where the mounting ring one (21) and mounting ring two (22) are located. The mounting ring one (21) is coaxially provided with a support ring (210). Several support mechanisms (3) are evenly distributed in a ring on the support ring (210). Each support mechanism (3) includes a support plate (31), a catalyst block (32) is embedded in the support plate (31), a connecting block one (33) is fixedly connected to one end of the support plate (31), and a connecting block two (34) is fixedly connected to the other end of the support plate (31).

2. The anti-carbon deposition optimization device for the gas inlet distribution structure of a coal liquefaction reactor according to claim 1, characterized in that, Several load-bearing mechanisms (3) are provided with reinforcing rings (4), and several connecting holes (5) are evenly distributed on the reinforcing rings (4).

3. The anti-carbon deposition optimization device for the gas inlet distribution structure of a coal liquefaction reactor according to claim 1, characterized in that, A number of connecting studs (211) are evenly distributed and fixedly connected on the supporting ring (210). Connecting block one (33) has a connecting screw hole one, and connecting block two (34) has a connecting screw hole two.

4. The anti-carbon deposition optimization device for the gas inlet distribution structure of a coal liquefaction reactor according to claim 3, characterized in that, Connecting block one (33) is threaded to connecting stud (211) through connecting screw hole one. Connecting block two (34) is provided with connecting screw between it and reinforcing ring (4). The connecting screw passes through connecting hole (5) and is threaded to connecting screw hole two on connecting block two (34).

5. The anti-carbon deposition optimization device for the gas inlet distribution structure of a coal liquefaction reactor according to claim 1, characterized in that, A connecting sleeve (13) is fixedly connected to the air distribution plate (11), and a plug hole (14) is opened on the side end of the connecting sleeve (13).

6. The anti-carbon deposition optimization device for the gas inlet distribution structure of a coal liquefaction reactor according to claim 1, characterized in that, A connecting plate (29) is coaxially arranged inside the supporting ring (210). A connecting shaft (26) is fixedly connected to the bottom surface of the connecting plate (29). A pin hole (27) is opened on the side end of the connecting shaft (26).

7. The anti-carbon deposition optimization device for the gas inlet distribution structure of a coal liquefaction reactor according to claim 6, characterized in that, The connecting shaft (26) is fitted inside the connecting sleeve (13), and a pin is provided between the connecting shaft (26) and the connecting sleeve (13). The pin passes through the insertion hole (14) and is inserted into the pin hole (27).

8. The anti-carbon deposition optimization device for the gas inlet distribution structure of a coal liquefaction reactor according to claim 6, characterized in that, A support rod (28) is connected between the mounting ring (21), the support ring (210), and the connecting plate (29).

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