Integrated hydrogenation reaction apparatus

Abstract

The utility model relates to hydrogenation reaction equipment field discloses an integrated hydrogenation reaction equipment, including gas storage tank, the bottom fixedly connected with support frame of gas storage tank, the top of gas storage tank is provided with gas pipe, the gas pipe is provided with two groups, one group gas pipe is fixedly connected with reation kettle away from the one end of gas storage tank, another group gas pipe is fixedly connected with hydrogen generator away from the one end of gas storage tank, the outer wall of gas pipe is provided with replacement dilution mechanism, replacement dilution mechanism includes gas exchange subassembly. In the utility model, through setting up gas exchange subassembly, utilize electric push rod drive and move to connect the passage of plugging block and lead, cooperate gas pump and inject nitrogen into gas pipeline, form positive pressure and push residual high concentration hydrogen gas to move, reduce the residence time and contact area of high concentration hydrogen gas in pipeline, avoid its and pipeline metal material hydrogen embrittlement reaction, effectively prolong the overall service life of hydrogenation reaction equipment.

Description

Technical Field

[0001] This utility model relates to the field of hydrogenation reaction equipment, and in particular to an integrated hydrogenation reaction equipment. Background Technology

[0002] Hydrogenation is a common and critical process in chemical, pharmaceutical, and fine chemical industries. It typically involves a chemical reaction between hydrogen and raw materials under high pressure and in a hydrogen-rich environment, facilitated by a catalyst. A complete hydrogenation reactor usually includes units for hydrogen production, hydrogen storage, hydrogen transportation, and the hydrogenation reaction itself.

[0003] In existing technologies, when equipment is temporarily shut down, maintained, or the process is switched, a high concentration of hydrogen may remain in the gas pipeline connecting the gas storage tank and the reactor. The residual hydrogen may undergo hydrogen embrittlement with the pipeline metal material under high temperature or specific conditions, affecting the equipment life. At the same time, when the pipeline needs to be repaired or maintained, the residual hydrogen inside the pipeline may easily explode when it encounters a source of ignition after reaching a certain concentration in the air, posing a significant safety hazard. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides an integrated hydrogenation reaction device, which aims to solve the problem in the prior art that "when the equipment is temporarily shut down, maintained or the process is switched, a high concentration of hydrogen will remain in the gas pipeline connecting the gas storage tank and the reactor, which will reduce the service life of the pipeline".

[0005] To achieve the above objectives, the present invention adopts the following technical solution: an integrated hydrogenation reaction device, comprising a gas storage tank, a support frame fixedly connected to the bottom of the gas storage tank, a gas delivery pipe provided at the top of the gas storage tank, two sets of gas delivery pipes, one set of gas delivery pipes fixedly connected to a reaction vessel at the end away from the gas storage tank, and the other set of gas delivery pipes fixedly connected to a hydrogen generator at the end away from the gas storage tank, a displacement and dilution mechanism provided on the outer wall of the gas delivery pipe, the displacement and dilution mechanism including a gas exchange component, the gas exchange component including a splicing pipe, the splicing pipe fixedly connected to the end of the gas delivery pipe near the gas storage tank, a sealing block piston connected to the inner wall of the splicing pipe, a connection channel opened in the inner wall of the sealing block, a pusher fixedly connected to the top of the sealing block, a gas supply pipe fixedly connected to the top outer wall of the splicing pipe, a gas pump fixedly connected to the end of the gas supply pipe away from the splicing pipe, and an electric push rod installed on the top of the splicing pipe.

[0006] As a further description of the above technical solution: The displacement and dilution mechanism further includes a dilution and release assembly, which includes a control valve. The control valve is fixedly connected to the outer wall of the gas supply pipe. A dilution pipe is fixedly connected to the outer wall of the control valve. An exhaust pipe is fixedly connected to the top of the dilution pipe. A dilution nozzle is fixedly connected to the inner wall of the dilution pipe. A nozzle is fixedly connected to the upper surface of the dilution nozzle.

[0007] As a further description of the above technical solution: The splicing pipe is fixedly connected to the upper surface of the gas storage tank, the output shaft of the electric push rod is fixedly connected to the upper surface of the push frame, and the output shaft of the electric push rod passes through and is slidably connected to the inner wall of the splicing pipe.

[0008] As a further description of the above technical solution: The air delivery pipe is fixedly connected to the outer wall of the dilution nozzle.

[0009] As a further description of the above technical solution: The reactor is fixedly connected to the upper surface of the support frame, the hydrogen generator is fixedly connected to the upper surface of the support frame, and the gas pump is fixedly connected to the upper surface of the support frame.

[0010] As a further description of the above technical solution: The connecting channel is L-shaped.

[0011] As a further description of the above technical solution: The dilution nozzle is annular in shape, and the dilution tube is an inverted frustum shape.

[0012] As a further description of the above technical solution: The nozzle is provided in multiple sets, and the multiple sets of nozzles are arranged in a rotating array with the center line of the dilution nozzle as the rotation axis.

[0013] This utility model has the following beneficial effects: 1. In this utility model, by setting up a gas exchange component, the sealing block is moved by an electric push rod to open the connection channel. In conjunction with the gas pump, nitrogen is injected into the gas pipeline to form positive pressure to push the residual high-concentration hydrogen gas to move, thereby reducing the residence time and contact area of ​​high-concentration hydrogen gas in the pipeline, avoiding hydrogen embrittlement reaction with the pipeline metal material, and effectively extending the overall service life of the hydrogenation reaction equipment.

[0014] 2. In this utility model, by setting up a dilution and release component, nitrogen gas is uniformly injected into the residual hydrogen gas through multiple sets of nozzles via an annular dilution nozzle to dilute it. The inverted frustum-shaped dilution tube can expand the gas flow space and accelerate the diffusion of the diluted gas to the exhaust pipe, so that the hydrogen gas is safely discharged in a low concentration state. This avoids the hidden danger of residual hydrogen gas reaching explosive concentration and causing an explosion when it encounters an ignition source, which is present in the prior art. It greatly improves the operational safety during equipment shutdown, maintenance and process switching. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the overall device in this utility model; Figure 2 This is a three-dimensional structural diagram of the ventilation component and the dilution and release component in this utility model; Figure 3 This is a three-dimensional cross-sectional view of the ventilation component in this utility model; Figure 4 This is a three-dimensional cross-sectional view of the dilution and release component in this utility model.

[0016] Legend: 1. Gas storage tank; 2. Gas pipeline; 3. Reactor; 4. Hydrogen generator; 5. Gas exchange assembly; 51. Splicing pipe; 52. Sealing block; 53. Connecting channel; 54. Push frame; 55. Gas supply pipe; 56. Gas pump; 57. Electric push rod; 6. Dilution and release assembly; 61. Control valve; 62. Dilution pipe; 63. Exhaust pipe; 64. Dilution nozzle; 65. Nozzle; 7. Support frame. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Reference Figure 1 , Figure 2 and Figure 3This utility model provides an embodiment of an integrated hydrogenation reaction device, comprising a gas storage tank 1 for storing hydrogen produced by a hydrogen generator 4. A support frame 7 for mounting other components is fixedly connected to the bottom of the gas storage tank 1. A gas delivery pipe 2 for gas transport is provided at the top of the gas storage tank 1. Two sets of gas delivery pipes 2 are provided; one set, located on the left side away from the gas storage tank 1, is fixedly connected to a reaction vessel 3 for hydrogenation reaction; the other set, located on the right side away from the gas storage tank 1, is fixedly connected to the hydrogen generator 4 for producing hydrogen. A displacement and dilution mechanism is provided on the outer wall of the gas delivery pipe 2, including a gas exchange component 5 and a splicing pipe 51. The splicing pipe 51 is used to install other components. The splicing pipe 51 is fixedly connected to the end of the gas supply pipe 2 near the gas storage tank 1. The inner wall of the splicing pipe 51 is piston-connected with a sealing block 52 for blocking the gas supply pipe 2. The inner wall of the sealing block 52 has a connecting channel 53, which allows the gas supply pipe 55 to communicate with the gas supply pipe 2. The top of the sealing block 52 is fixedly connected with a pusher 54 for supporting the sealing block 52. The top outer wall of the splicing pipe 51 is fixedly connected with a gas supply pipe 55 for supplying nitrogen. The end of the gas supply pipe 55 away from the splicing pipe 51 is fixedly connected with a gas pump 56 for providing nitrogen to pressurize the gas supply pipe 2. The top of the splicing pipe 51 is equipped with an electric push rod 57 for pushing the sealing block 52 to move.

[0019] Reference Figure 1 , Figure 2 and Figure 4 The displacement and dilution mechanism also includes a dilution and release component 6, which includes a control valve 61. The control valve 61 controls the connection between the gas supply pipe 2 and the dilution pipe 62. The control valve 61 is fixedly connected to the outer wall of the gas supply pipe 2. During gas supply, the gas supply pipe 2 is connected to the reactor 3. When it is necessary to remove hydrogen from the gas supply pipe 2, the gas supply pipe 2 is connected to the dilution pipe 62, allowing the hydrogen inside the gas supply pipe 2 to be diluted with nitrogen before being discharged, thus preventing the hydrogen from reacting with the pipe when the pipe is closed. The dilution pipe 62 is fixedly connected to the outer wall of the control valve 61. The dilution pipe 62 is used to dilute the hydrogen pushed out by the gas exchange component 5. The dilution tube 62 is fixedly connected to an exhaust pipe 63 at its top for discharging hydrogen gas diluted to a certain concentration. A dilution nozzle 64 is fixedly connected to the inner wall of the dilution tube 62. The dilution nozzle 64, in conjunction with a nozzle 65, allows the hydrogen gas to be uniformly mixed with nitrogen gas. A nozzle 65 for spraying nitrogen gas is fixedly connected to the upper surface of the dilution nozzle 64. The shape of the dilution nozzle 64 is annular, and the shape of the dilution tube 62 is an inverted frustum, which expands the gas flow space and allows the gas to move toward the exhaust pipe 63. Multiple sets of nozzles 65 are provided, and the multiple sets of nozzles 65 are arranged in a rotating array around the center line of the dilution nozzle 64 as the rotation axis.

[0020] Reference Figure 2 and Figure 3The splicing pipe 51 is fixedly connected to the upper surface of the gas storage tank 1. The output shaft of the electric push rod 57 is fixedly connected to the upper surface of the push frame 54 to drive the sealing block 52 to move. The output shaft of the electric push rod 57 passes through and is slidably connected to the inner wall of the splicing pipe 51. Another gas supply pipe 55 is fixedly connected to the outer wall of the dilution nozzle 64. The dilution nozzle 64 is connected to the gas supply pipe 55. Under the action of the gas pump 56, the hydrogen inside the dilution pipe 62 is rapidly diluted and discharged. The reactor 3 is fixedly connected to the upper surface of the support frame 7 and is supported and fixed by the support frame 7. The hydrogen generator 4 is fixedly connected to the upper surface of the support frame 7. The gas pump 56 is fixedly connected to the upper surface of the support frame 7. The shape of the connecting channel 53 is set to L-shape. When not in use, the sealing block 52 moves up to block the connection between the pipe wall of the splicing pipe 51 and the connecting channel 53.

[0021] Working Principle: During normal hydrogenation reaction, hydrogen generator 4 continuously produces hydrogen. The hydrogen is transported to storage tank 1 through a set of gas delivery pipes 2. When reactor 3 needs to undergo hydrogenation, the hydrogen stored in storage tank 1 is transported to reactor 3 through another set of gas delivery pipes 2 to provide a hydrogen source for the hydrogenation reaction. At this time, the displacement and dilution mechanism is in a non-working state. Control valve 61 maintains the connection path between gas delivery pipe 2 and reactor 3, while the sealing block 52 of gas exchange component 5 is in the upper position under the action of electric push rod 57, sealing the pipe wall of splicing pipe 51 and connecting channel 53 to prevent gas leakage. When it is necessary to remove hydrogen from inside gas delivery pipe 2, the displacement and dilution mechanism is activated. Electric push rod 57 pushes push frame 54 downward, causing sealing block 52 to move downward inside splicing pipe 51, so that connecting channel 53 and gas delivery pipe 2 are connected. Simultaneously, the gas pump 56 starts, delivering nitrogen through the gas supply pipe 55 to the connecting channel 53 and injecting it into the gas supply pipe 2. The nitrogen creates positive pressure in the gas supply pipe 2, pushing the residual hydrogen towards the dilution and release component 6. At this time, the control valve 61 switches its state, connecting the gas supply pipe 2 with the dilution pipe 62 and cutting off the connection with the reactor 3. After the mixed gas of hydrogen and nitrogen enters the dilution pipe 62, the dilution nozzle 64 sprays nitrogen evenly through multiple sets of nozzles 65, further mixing and diluting it with hydrogen. Since the dilution pipe 62 has an inverted frustum-shaped structure, the gas flow space gradually expands, accelerating the diffusion of gas towards the exhaust pipe 63, ensuring that the hydrogen concentration decreases evenly. Finally, the diluted low-concentration hydrogen is safely discharged through the exhaust pipe 63, effectively avoiding the risk of hydrogen reacting with or accumulating on the pipe wall in the closed state of the gas supply pipe 2.

[0022] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An integrated hydrogenation reaction device, comprising a gas storage tank (1), characterized in that: The bottom of the gas storage tank (1) is fixedly connected to a support frame (7), and the top of the gas storage tank (1) is provided with a gas transmission pipe (2). There are two sets of gas transmission pipes (2). One set of gas transmission pipes (2) is fixedly connected to a reaction vessel (3) at the end away from the gas storage tank (1), and the other set of gas transmission pipes (2) is fixedly connected to a hydrogen generator (4) at the end away from the gas storage tank (1). The outer wall of the gas transmission pipe (2) is provided with a displacement dilution mechanism, which includes a gas exchange component (5). The ventilation assembly (5) includes a splicing pipe (51), which is fixedly connected to one end of the gas supply pipe (2) near the gas storage tank (1). A sealing block (52) is piston-connected to the inner wall of the splicing pipe (51). A connection channel (53) is opened on the inner wall of the sealing block (52). A pusher (54) is fixedly connected to the top of the sealing block (52). An air supply pipe (55) is fixedly connected to the top outer wall of the splicing pipe (51). An air pump (56) is fixedly connected to the end of the air supply pipe (55) away from the splicing pipe (51). An electric push rod (57) is installed on the top of the splicing pipe (51).

2. The integrated hydrogenation reaction equipment according to claim 1, characterized in that: The displacement dilution mechanism further includes a dilution release component (6), which includes a control valve (61). The control valve (61) is fixedly connected to the outer wall of the gas supply pipe (2). A dilution pipe (62) is fixedly connected to the outer wall of the control valve (61). An exhaust pipe (63) is fixedly connected to the top of the dilution pipe (62). A dilution nozzle (64) is fixedly connected to the inner wall of the dilution pipe (62). A nozzle (65) is fixedly connected to the upper surface of the dilution nozzle (64).

3. The integrated hydrogenation reaction equipment according to claim 1, characterized in that: The splicing pipe (51) is fixedly connected to the upper surface of the gas storage tank (1), the output shaft of the electric push rod (57) is fixedly connected to the upper surface of the push frame (54), and the output shaft of the electric push rod (57) passes through and is slidably connected to the inner wall of the splicing pipe (51).

4. The integrated hydrogenation reaction equipment according to claim 1, characterized in that: The air delivery pipe (55) is fixedly connected to the outer wall of the dilution nozzle (64).

5. The integrated hydrogenation reaction equipment according to claim 1, characterized in that: The reactor (3) is fixedly connected to the upper surface of the support frame (7), the hydrogen generator (4) is fixedly connected to the upper surface of the support frame (7), and the gas pump (56) is fixedly connected to the upper surface of the support frame (7).

6. The integrated hydrogenation reaction equipment according to claim 1, characterized in that: The connecting channel (53) is L-shaped.

7. The integrated hydrogenation reaction equipment according to claim 2, characterized in that: The dilution nozzle (64) is annular in shape, and the dilution tube (62) is an inverted frustum in shape.

8. The integrated hydrogenation reaction equipment according to claim 2, characterized in that: The nozzle (65) is provided in multiple sets, and the multiple sets of nozzles (65) are arranged in a rotating array with the center line of the dilution nozzle (64) as the rotation axis.

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