Tail gas outlet structure, cold hydrogenation reactor and assembly method thereof

Abstract

The present invention discloses an exhaust gas outlet structure, a cold hydrogenation reactor and an assembly method thereof, comprising a separation shell, wherein a gas discharge pipe is arranged on the separation shell, and a gas discharge flange is arranged on the gas discharge pipe; an installation pipe is arranged in the separation shell, and the installation pipe is communicated with the inner cavity of the separation shell; a conical top is arranged on the separation shell, and a plurality of groups of penetrating filter holes are provided on the surface of the conical top; the conical top and the installation pipe are coaxially arranged so that the mixed gas is separated at the filter holes; the beneficial effect of the present invention is that through the conical top arranged in the above-mentioned separation shell, when the mixed gas contacts the conical top, the flow velocity of the mixed gas can be effectively reduced, so that the high-speed flowing mixed gas can be prevented from corroding the inner wall of the pipeline of the subsequent gas, and the service life of the pipeline can be increased.

Description

Technical Field

[0001] The invention relates to a tail gas outlet structure, a cold hydrogenation reactor and an assembling method thereof. Background Art

[0002] In recent years, the contradiction between the ever-increasing demand for energy and the ever-decreasing non-renewable energy has intensified, giving rise to a boom in the development and utilization of renewable energy. As a rich, clean, renewable new energy, solar energy has attracted widespread attention. In the utilization of solar energy, polysilicon plays a huge role.

[0003] In the prior art, for example, a Chinese patent with announcement number CN115007066A discloses a cold hydrogenation reactor, which belongs to the field of polysilicon production equipment, including an inner cylinder for cold hydrogenation reaction, and a pressure-bearing shell covered outside the inner cylinder, between the pressure-bearing shell and the inner cylinder is an annular cavity filled with balancing gas to balance the internal and external pressures of the inner cylinder; it also includes a gas material inlet that penetrates the bottom of the pressure-bearing shell and is inserted into the bottom of the inner cylinder, and a material outlet that penetrates the top of the pressure-bearing shell and is inserted into the top of the inner cylinder, and the material outlet is located at the end of the inner cylinder and is connected to a cyclone separator; it also includes a silicon powder inlet for replenishing silicon powder to the inner cylinder, and the silicon powder inlet penetrates the lower part of the pressure-bearing shell and is inserted into the lower part of the inner cylinder. The present invention reduces the requirements for the material of the cold hydrogenation reactor, so that the material of the cold hydrogenation reactor can meet the requirements by using ordinary alloy steel, and the thickness is also reduced, which greatly reduces the cost and processing difficulty of the equipment.

[0004] However, during the use of the above scheme, a mixed gas containing silicon powder will be discharged from the material outlet, and the mixed gas is in a high-speed moving state. If the mixed gas is not treated, the high-speed moving mixed gas will collide with other subsequent pipelines, causing serious corrosion to other subsequent pipelines. In view of this, the present invention proposes an exhaust gas outlet structure, a cold hydrogenation reactor and an assembly method thereof to solve the above problems. Summary of the invention

[0005] The object of the present invention is to provide a tail gas outlet structure, a cold hydrogenation reactor and an assembly method thereof, so as to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] An exhaust gas outlet structure comprises a separation shell, a gas discharge pipe is arranged on the separation shell, and a gas discharge flange is arranged on the gas discharge pipe;

[0008] An installation pipe is arranged in the separation shell, and the installation pipe is connected with the inner cavity of the separation shell. A conical top is arranged on the separation shell, and a plurality of groups of penetrating filter holes are provided on the surface of the conical top. The conical top and the installation pipe are arranged coaxially, so that the mixed gas is separated at the filter holes.

[0009] As an improvement of the above technical solution, the installation pipe is provided with an installation pipe inner hole, the diameter of the installation pipe inner hole is smaller than the diameter of the gas discharge pipe, and the installation pipe inner hole is coaxially arranged with the conical top.

[0010] As an improvement of the above technical solution, a particle discharge pipe is provided on the separation shell;

[0011] The separation shell is provided with a dispersion slope, a rotation arc surface and a collection slope. The dispersion slope coincides with a side of the conical top facing the installation pipeline, and the slope foot of the collection slope is arranged toward the particle discharge pipeline.

[0012] As an improvement of the above technical solution, the conical top is provided with a thickened conical portion, the thickened conical portion is coaxially arranged with the installation pipe, the inner cavity of the separation shell is provided with a material introduction slope, the foot of the material introduction slope is arranged toward the direction of the particle discharge pipe, and the installation pipe passes through the material introduction slope.

[0013] As an improvement of the above technical solution, guide grooves are provided at both ends of the inner hole of the installation pipe, and the guide grooves are provided on the installation pipe, and the diameter of the guide grooves is larger than the diameter of the inner hole of the installation pipe.

[0014] As an improvement of the above technical solution, a plurality of buffer pipes are provided on the installation pipe, the buffer pipes are communicated with the inner cavity of the inner hole of the installation pipe, and the buffer pipes are opened in the wall thickness of the installation pipe.

[0015] As an improvement of the above technical solution, the buffer pipe is provided with a buffer straight portion and a buffer arc portion, the buffer straight portion is communicated with the inner cavity of the buffer arc portion, and the buffer arc portion is arranged above the buffer straight portion.

[0016] A cold hydrogenation reactor comprises a reactor shell, wherein a plurality of groups of material outlet pipes are arranged on the reactor shell, each group of the material outlet pipes is provided with an exhaust gas outlet structure as described in the above item, and the material outlet pipes are provided with an outlet pipe inner hole, wherein the outlet pipe inner hole diameter is smaller than the installation pipe inner hole diameter.

[0017] As an improvement of the above technical solution, a material return pipe is provided at the center of the reactor shell, and the material return pipe is connected to the inner cavity of the reactor shell;

[0018] A plurality of groups of material collecting pipes are arranged on the material return pipe, and a connecting hose is arranged between each group of the material collecting pipes and each group of the particle discharging pipes.

[0019] A method for assembling a tail gas outlet structure, used in a cold hydrogenation reactor, comprises the following steps:

[0020] S1. Fluid test:

[0021] Insert the installation pipe into the inner cavity of the separation shell, and place the installation pipe at the air outlet of the fan. The fan provides a fluid with a certain flow rate to enter the installation pipe, and the fluid flow rate of the gas discharge pipe is detected. If the fluid flow rate is higher than the specified fluid flow rate, replace the installation pipe until the fluid flow rate of the gas discharge pipe reaches the specified flow rate;

[0022] S2. Welding installation:

[0023] After the fluid flow rate is qualified in S1, the fluid test, the qualified installation pipe is inserted into the inner cavity of the separation shell, and the gap between the installation pipe and the separation shell is welded until the installation pipe and the separation shell are connected as a whole;

[0024] S3, flange fixing:

[0025] Align the installation pipe with the material outlet pipe and connect them to the flanges of the two sets of pipes by bolts, while ensuring the sealing performance;

[0026] S4. Pipeline alignment:

[0027] In S3, flange fixing, when installing the pipe for connection, rotate the installed pipe until the particle discharge pipe is aligned with the material collection pipe, and then proceed to S3, flange fixing;

[0028] S5, hose connection:

[0029] After S4, the pipeline alignment is completed, a connecting hose is installed between the particle discharge pipeline and the corresponding material collection pipeline until the multiple sets of connecting hoses are connected.

[0030] Compared with the prior art, the present invention has the following beneficial effects:

[0031] When the mixed gas is processed, the mixed gas enters the inner cavity of the installation pipeline through the installation pipeline, and the mixed gas is guided to the bottom of the conical top through the installation pipeline, and dispersed when the mixed gas contacts the conical top, that is, the gas in the mixed gas flows toward the gas discharge pipeline through the filter hole, and the particulate matter in the mixed gas flows along the conical top and is retained in the inner cavity of the separation shell, thereby completing the separation of the mixed gas and the deceleration process;

[0032] The conical top provided in the separation shell can effectively reduce the flow velocity of the mixed gas when the mixed gas contacts the conical top, thereby preventing the high-speed mixed gas from corroding the inner wall of the pipeline of the subsequent gas, thereby increasing the service life of the pipeline;

[0033] By means of the conical top provided in the above-mentioned separation shell, when the mixed gas contacts the conical top, the gas in the mixed gas can continue to flow through the filter holes, and the particulate matter can be separated from the gas through the filter holes, which can facilitate the recovery and reuse of the particulate matter in the mixed gas and reduce the cost expenditure. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is a schematic diagram of the connection between the outlet structure and the reactor shell of the present invention;

[0035] Figure 2 It is a structural schematic diagram of the cold hydrogenation reactor of the present invention;

[0036] Figure 3 For the present invention Figure 1 A schematic diagram of the enlarged structure at A in the middle;

[0037] Figure 4 It is a schematic diagram of the outlet structure of the present invention;

[0038] Figure 5 For the present invention Figure 4 Front view of

[0039] Figure 6 For the present invention Figure 5 Cross-sectional view of the middle BB;

[0040] Figure 7 It is a schematic diagram of the structure of the pipeline installed in the present invention;

[0041] Figure 8 It is a schematic structural diagram of the separation shell of the present invention.

[0042] In the figure: 10, reactor shell; 11, material outlet pipe; 111, inner hole of outlet pipe; 12, material return pipe; 13, material collection pipe; 20, separation shell; 21, particle discharge pipe; 22, installation pipe; 221, buffer pipe; 2211, buffer arc portion; 2212, buffer straight portion; 222, inner hole of installation pipe; 223, guide groove; 23, conical top; 24, filter hole; 25, thickened conical portion; 26, dispersion slope; 27, rotation arc surface; 28, collection slope; 29, material guide slope; 30, gas discharge pipe; 31, gas discharge flange; 40, connecting hose. DETAILED DESCRIPTION

[0043] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0044] Example:

[0045] like Figure 1-8 As shown, this embodiment proposes an exhaust gas outlet structure, including a separation shell 20, on which a gas discharge pipe 30 is provided, and on which a gas discharge flange 31 is provided;

[0046] An installation pipe 22 is provided in the separation shell 20, and the installation pipe 22 is connected to the inner cavity of the separation shell 20. A conical top 23 is provided on the separation shell 20, and a plurality of groups of penetrating filter holes 24 are provided on the surface of the conical top 23. The conical top 23 is coaxially arranged with the installation pipe 22, so that the mixed gas is separated at the filter holes 24.

[0047] In this embodiment, when the mixed gas is processed, the mixed gas enters the inner cavity of the installation pipe 22 through the installation pipe 22, and the mixed gas is guided to the bottom of the conical top 23 through the installation pipe 22. When the mixed gas contacts the conical top 23, it is dispersed, that is, the gas in the mixed gas flows toward the gas discharge pipe 30 through the filter hole 24, and the particulate matter in the mixed gas flows along the conical top 23 and is retained in the inner cavity of the separation shell 20, thereby completing the separation of the mixed gas and the deceleration process;

[0048] The conical top 23 provided in the separation shell 20 can effectively reduce the flow velocity of the mixed gas when the mixed gas contacts the conical top 23, thereby preventing the high-speed mixed gas from corroding the inner wall of the pipeline of the subsequent gas, thereby increasing the service life of the pipeline;

[0049] By means of the conical top 23 provided in the above-mentioned separation shell 20, when the mixed gas contacts the conical top 23, the gas in the mixed gas can continue to flow through the filter holes 24, and the particulate matter can be separated from the gas through the filter holes 24, which can facilitate the recovery and reuse of the particulate matter in the mixed gas and reduce the cost expenditure.

[0050] Specifically, the installation pipe 22 is provided with an installation pipe inner hole 222 , the diameter of the installation pipe inner hole 222 is smaller than the diameter of the gas discharge pipe 30 , and the installation pipe inner hole 222 is coaxially arranged with the conical top 23 .

[0051] In this embodiment, by setting the diameter of the inner hole 222 of the installation pipe to be smaller than the diameter of the gas discharge pipe 30, the flow speed of the gas after the mixed gas is separated can be reduced.

[0052] Specifically, the separation shell 20 is provided with a particle discharge pipe 21;

[0053] The separation shell 20 is provided with a dispersion slope 26, a rotation arc surface 27 and a collection slope 28. The dispersion slope 26 coincides with a side of the conical top 23 facing the installation pipe 22, and the foot of the collection slope 28 is arranged toward the particle discharge pipe 21.

[0054] In this case, the separation shell 20 is formed by the dispersion slope 26, the rotation arc surface 27 and the collection slope 28 rotating along the axis of the installation pipe 22. Of course, the separation shell 20 is provided with a wall thickness, and the wall thickness is not less than 1 cm.

[0055] In this embodiment, when the mixed gas contacts the conical top 23, the particulate matter in the mixed gas first contacts the dispersion slope 26, and then the particulate matter contacts the rotating arc surface 27 under inertia, and is guided by the rotating arc surface 27 to move to the collecting slope 28 and placed in the inner cavity of the separation shell 20, so as to facilitate the recovery and reuse of the particulate matter.

[0056] Specifically, the conical top 23 is provided with a thickened conical portion 25, and the thickened conical portion 25 is coaxially arranged with the installation pipe 22. The inner cavity of the separation shell 20 is provided with a material introduction slope 29, and the slope foot of the material introduction slope 29 is arranged toward the particle discharge pipe 21, and the installation pipe 22 passes through the material introduction slope 29.

[0057] In this embodiment, the thickened conical portion 25 can increase the service life of the conical top 23;

[0058] Of course, through the guide slope 29, when the particulate matter is placed in the inner cavity of the separation shell 20 through the collecting slope 28, the particulate matter placed in the inner cavity of the separation shell 20 can flow to the particle discharge pipe 21 through the guide slope 29, so as to recycle and reuse the particulate matter.

[0059] Specifically, guide grooves 223 are provided at both ends of the inner hole 222 of the installation pipe. The guide grooves 223 are provided on the installation pipe 22 , and the diameter of the guide grooves 223 is larger than the diameter of the inner hole 222 of the installation pipe.

[0060] In this embodiment, the guide groove 223 can facilitate the mixed gas to flow in the inner hole 222 of the installation pipe.

[0061] Specifically, a plurality of buffer pipes 221 are provided on the installation pipe 22 . The buffer pipes 221 are communicated with the inner cavity of the inner hole 222 of the installation pipe. The buffer pipes 221 are opened in the wall thickness of the installation pipe 22 .

[0062] In this case, the number and position of the buffer pipes 221 are set according to actual conditions to achieve the best deceleration effect.

[0063] Specifically, the buffer pipe 221 is provided with a buffer straight portion 2212 and a buffer arc portion 2211 . The buffer straight portion 2212 is communicated with the inner cavity of the buffer arc portion 2211 , and the buffer arc portion 2211 is provided above the buffer straight portion 2212 .

[0064] In this embodiment, when the mixed gas passes through the inner hole 222 of the installation pipe, the mixed gas is diverted through the buffer pipe 221, and when the mixed gas passes through the buffer arc portion 2211, the mixed gas flips to impact the mixed gas flowing in the inner hole 222 of the installation pipe, thereby reducing the flow speed of the mixed gas in the inner hole 222 of the installation pipe, thereby decelerating the mixed gas so that the mixed gas is separated at the conical top 23.

[0065] A cold hydrogenation reactor comprises a reactor shell 10, wherein the reactor shell 10 is provided with a plurality of groups of material outlet pipes 11, each group of the material outlet pipes 11 is provided with an exhaust gas outlet structure described in any one of the above items, and the material outlet pipes 11 are provided with an outlet pipe inner hole 111, wherein the diameter of the outlet pipe inner hole 111 is smaller than the diameter of the installation pipe inner hole 222.

[0066] In this embodiment, the diameter of the outlet pipe inner hole 111 is smaller than the diameter of the installation pipe inner hole 222, which can facilitate the flow of the mixed gas and prevent the mixed gas from entering a narrow space for acceleration and affecting the efficiency of deceleration and separation.

[0067] Specifically, a material return pipe 12 is disposed at the center of the reactor shell 10, and the material return pipe 12 is communicated with the inner cavity of the reactor shell 10;

[0068] The material return pipe 12 is provided with a plurality of groups of material collecting pipes 13 , and a connecting hose 40 is provided between each group of the material collecting pipes 13 and each group of the particle discharging pipes 21 .

[0069] In this embodiment, the material outlet pipe 11 is the air outlet of the cyclone separator in the cold hydrogenation reactor. For details, reference may be made to the structure of a cold hydrogenation reactor disclosed in Chinese patent publication number CN115007066A.

[0070] Of course, through the connection of the above-mentioned multiple pipelines, after the silicon powder in the mixed gas is separated, the separated silicon powder can be introduced into the cold hydrogen reactor for direct treatment, which can improve the treatment efficiency.

[0071] A method for assembling an exhaust gas outlet structure comprises the following steps:

[0072] S1. Fluid test:

[0073] Insert the installation pipe 22 into the inner cavity of the separation shell 20, and place the installation pipe 22 at the air outlet of the fan, and the fan provides a fluid with a certain flow rate to enter the installation pipe 22, and detect the fluid flow rate of the gas discharge pipe 30. If the fluid flow rate is higher than the specified fluid flow rate, replace the installation pipe 22 until the fluid flow rate of the gas discharge pipe 30 reaches the specified flow rate;

[0074] S2. Welding installation:

[0075] After the fluid flow rate is qualified in S1, the fluid test, the qualified installation pipe 22 is inserted into the inner cavity of the separation shell 20, and the gap between the installation pipe 22 and the separation shell 20 is welded until the installation pipe 22 and the separation shell 20 are connected as a whole;

[0076] S3, flange fixing:

[0077] Align the installation pipe 22 with the material outlet pipe 11 and connect them to the flanges of the two sets of pipes by bolts, while ensuring the sealing performance;

[0078] S4. Pipeline alignment:

[0079] In S3, flange fixing, when the installation pipe 22 is connected, the installation pipe 22 is rotated until the particle discharge pipe 21 is aligned with the material collection pipe 13, and then S3, flange fixing is performed;

[0080] S5, hose connection:

[0081] After the pipeline alignment is completed in S4, the connecting hose 40 is installed between the particle discharge pipeline 21 and the corresponding material collection pipeline 13 until the connection of multiple groups of connecting hoses 40 is completed.

[0082] In this embodiment, the above-mentioned assembly method can facilitate the processing of the mixed gas at the material outlet of the cold hydrogenation reactor during operation, separate the particulate matter in the mixed gas while reducing the flow rate of the mixed gas, and introduce the separated particulate matter into the cold hydrogenation reactor for recycling and reuse.

[0083] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An exhaust gas outlet structure, characterized in that: It comprises a separation shell (20), the separation shell (20) is provided with a gas discharge pipeline (30), and the gas discharge pipeline (30) is provided with a gas discharge flange (31); The separation shell (20) is provided with a mounting pipe (22), the mounting pipe (22) being in communication with the inner cavity of the separation shell (20), the separation shell (20) being provided with a conical top (23), the surface of the conical top (23) being provided with a plurality of groups of filter holes (24) penetrating therethrough, the conical top (23) being coaxially arranged with the mounting pipe (22), so that the mixed gas is separated at the filter holes (24); The installation pipe (22) is provided with an installation pipe inner hole (222), the diameter of the installation pipe inner hole (222) is smaller than the diameter of the gas discharge pipe (30), and the installation pipe inner hole (222) is coaxially arranged with the conical top (23); The separation shell (20) is provided with a particle discharge pipe (21); The separation shell (20) is provided with a dispersion slope (26), a rotation arc surface (27) and a collection slope (28), the dispersion slope (26) coincides with a side of the conical top (23) facing the installation pipe (22), and the foot of the collection slope (28) is arranged towards the particle discharge pipe (21); The conical top (23) is provided with a thickened conical portion (25), the thickened conical portion (25) is coaxially arranged with the mounting pipe (22), the inner cavity of the separation shell (20) is provided with a material introduction slope (29), the slope foot of the material introduction slope (29) is arranged in the direction of the particle discharge pipe (21), and the mounting pipe (22) passes through the material introduction slope (29); Both ends of the inner hole (222) of the installation pipe are provided with guide grooves (223), the guide grooves (223) are provided on the installation pipe (22), and the diameter of the guide grooves (223) is larger than the diameter of the inner hole (222) of the installation pipe; The installation pipe (22) is provided with a plurality of buffer pipes (221), the buffer pipes (221) are in communication with the inner cavity of the inner hole (222) of the installation pipe, and the buffer pipes (221) are opened in the wall thickness of the installation pipe (22); The buffer pipe (221) is provided with a buffer straight portion (2212) and a buffer arc portion (2211); the buffer straight portion (2212) is communicated with an inner cavity of the buffer arc portion (2211); and the buffer arc portion (2211) is arranged above the buffer straight portion (2212).

2. A cold hydrogenation reactor, characterized in that: The invention comprises a reactor shell (10), wherein a plurality of groups of material outlet pipes (11) are arranged on the reactor shell (10), each group of the material outlet pipes (11) is provided with an exhaust gas outlet structure according to claim 1, and the material outlet pipes (11) are provided with an outlet pipe inner hole (111), wherein the diameter of the outlet pipe inner hole (111) is smaller than the diameter of the installation pipe inner hole (222).

3. A cold hydrogenation reactor according to claim 2, characterized in that: A material return pipe (12) is provided at the center of the reactor shell (10), and the material return pipe (12) is communicated with the inner cavity of the reactor shell (10); The material return pipe (12) is provided with a plurality of groups of material collection pipes (13), and a connecting hose (40) is provided between each group of the material collection pipes (13) and each group of the particle discharge pipes (21).

4. The assembly method of the tail gas outlet structure according to claim 1 is used in a cold hydrogenation reactor according to any one of claims 2 to 3, characterized in that: The following steps are involved: S1. Fluid test: Inserting the installation pipe (22) into the inner cavity of the separation shell (20), and placing the installation pipe (22) at the air outlet of the fan, the fan provides a fluid with a certain flow rate to enter the installation pipe (22), and the fluid flow rate of the gas outlet pipe (30) is detected. If the fluid flow rate is higher than the specified fluid flow rate, the installation pipe (22) is replaced until the fluid flow rate of the gas outlet pipe (30) reaches the specified flow rate; S2. Welding installation: After the fluid flow rate in the fluid test is qualified in S1, inserting the qualified installation pipe (22) into the inner cavity of the separation shell (20), and welding the gap between the installation pipe (22) and the separation shell (20) until the installation pipe (22) and the separation shell (20) are connected as a whole; S3, flange fixing: Align the installation pipe (22) with the material outlet pipe (11), and connect them to the flanges of the two sets of pipes by bolts, while ensuring the sealing performance; S4. Pipeline alignment: In S3, flange fixing, when the installation pipe (22) is connected, the installation pipe (22) is rotated until the particle discharge pipe (21) is aligned with the material collection pipe (13), and then S3, flange fixing is performed; S5, hose connection: After S4, the pipeline alignment is completed, a connecting hose (40) is installed between the particle discharge pipeline (21) and the corresponding material collection pipeline (13) until the connection of multiple sets of connecting hoses (40) is completed.

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