Tube bundle type novel propionaldehyde hydrogenation reactor

Abstract

The utility model discloses a tube bundle type novel propionaldehyde hydrogenation reactor, which comprises a reaction tank, a shell and a connecting tube, the shell is arranged on the right side of the reaction tank, a communicating tube is inserted and fixed on the left side of the shell, the left side of the communicating tube is inserted and fixed on the outer wall of the reaction tank and is communicated with the inner cavity of the reaction tank, and the left side of the communicating tube is communicated with the inner cavity of the reaction tank. During use, through the arrangement of the single communicating pipe, when hot hydrogen and cold hydrogen need to be introduced separately, the movable cover can be clamped and fixed by pulling the corresponding pulling plate and driving the movable cover to move towards the corresponding pipeline direction and inserting the locking rod on the adjacent side into the inner cavity of the adjacent blind hole; and then cold hydrogen or hot hydrogen is injected into the reaction tank, two kinds of hydrogen can be directly introduced through one communicating pipe, the sealing performance of the reaction tank is improved, the leakage risk of the reaction tank is reduced, and the safety of workers is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of acetone preparation, in particular to a tube-in-tube bundle type novel propionaldehyde hydrogenation reactor. Background Art

[0002] The industrial production of acetone is mainly based on the cumene method. Acetone is mainly used as a solvent in the explosives, plastics, rubber, fiber, leather, oil, paint and other industries. It can also be used as an important raw material for synthesizing ketene, acetic anhydride, iodoform, polyisoprene rubber, methyl methacrylate, chloroform, epoxy resin and other substances.

[0003] In the existing acetone preparation process, propionaldehyde hydrogenation is a key step. However, when the existing propionaldehyde hydrogenation reactor is in use, two pipes are used to control the entry of hot hydrogen and cold hydrogen respectively. The hydrogen has only different temperatures and other properties are the same. However, the reaction tank also needs to have more through holes. On the one hand, the processing technology of the reaction tank increases and the cost increases. On the other hand, there are more through holes, and the leakage probability of each through hole of the reaction tank is the same. Multiple through holes will increase the leakage probability, endangering the life safety of employees. Therefore, we propose a new propionaldehyde hydrogenation reactor of tube bundle type. Utility Model Content

[0004] One of the purposes of the utility model is achieved by the following technical solution:

[0005] A novel propionaldehyde hydrogenation reactor of tube bundle type comprises a reaction tank, a shell and a connecting pipe, wherein the shell is arranged on the right side of the reaction tank, and a connecting pipe is inserted and fixed on the left side of the shell, and the left side of the connecting pipe is inserted and fixed on the outer wall of the reaction tank and communicated with the inner cavity of the reaction tank, seven shells are arranged, and the seven shells are equidistantly distributed from top to bottom, the connecting pipe is inserted on the outer wall of the reaction tank and communicated with the inner cavity of the reaction tank, and a cold hydrogen pipe and a hot hydrogen pipe are respectively inserted and fixed on the right side of the shell from front to back, the inner cavity of the shell is provided with a movable cover, and a through hole is opened on the right side of the movable cover, square rods are fixedly connected to the front and rear sides of the movable cover, square holes matching the square rods are opened on the front and rear sides of the shell, and the other end of the square rod passes through the inner cavity of the adjacent square holes and is fixedly connected to a pull plate, and the outer walls of the two square rods are sleeved with a first spring, and the two ends of the first spring are respectively fixedly connected to the movable cover and the inner wall of the shell.

[0006] Furthermore, a circular sealing pad is fixedly connected to the left side of the movable cover, and the left side of the circular sealing pad is arranged in close contact with the left side wall of the inner cavity of the shell.

[0007] Furthermore, the right side of the movable cover is fitted with the cold hydrogen pipe and the hot hydrogen pipe.

[0008] Furthermore, two blind holes arranged front and back are opened on the right side of the movable cover, and two through holes arranged front and back are opened on the right side of the shell, and a locking rod with the same size as the blind hole is movably penetrated through the inner cavity of the through hole, the right ends of the two locking rods are fixedly connected with pull rings, and the outer walls of the two locking rods are sleeved and fixed with fixing rings, the outer sides of the two locking rods are sleeved with second springs, and the two ends of the second spring are respectively fixedly connected to the fixing ring and the inner wall of the shell.

[0009] Furthermore, pressure sensors are fixedly installed on both the front and rear sides of the inner cavity of the shell, and a first warning light and a second warning light are fixedly installed on the top of the shell near the front and rear sides respectively, and a controller is fixedly installed on the top of the shell near the right side.

[0010] Furthermore, the number of the connecting pipes is consistent with that of the shell.

[0011] Furthermore, the cold hydrogen tube and the hot hydrogen tube are symmetrically arranged front to back with the central axis of the movable cover as the symmetry axis, and the inner diameter lengths of the cold hydrogen tube and the hot hydrogen tube are consistent with the inner diameter length of the through hole.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] 1. Through the arrangement of the connecting pipe, shell, cold hydrogen pipe, hot hydrogen pipe, movable cover, square rod, pull plate, first spring, round-shaped sealing pad, blind hole, locking rod, fixing ring, second spring and pull ring, through the arrangement of a single connecting pipe, when it is necessary to introduce hot hydrogen and cold hydrogen separately, the corresponding pull plate can be pulled to drive the movable cover to move in the direction of the corresponding pipeline, and the locking rod on the adjacent side can be inserted into the adjacent blind hole cavity, so that the movable cover can be clamped and fixed, so that the through hole is aligned with the cold hydrogen pipe or the hot hydrogen pipe, and then, cold hydrogen or hot hydrogen can be injected into the reaction tank. Two kinds of hydrogen can be directly introduced using one connecting pipe, the sealing of the reaction tank is improved, the risk of leakage of the reaction tank is reduced, and the safety of workers is increased;

[0014] 2. Through the setting of the pressure sensor, the controller, the first warning light and the second warning light, after the movable cover is pulled to move, pressure is applied to the pressure sensor through the movable cover, so that the pressure sensor sends a signal to the controller, and the controller starts the first warning light or the second warning light at the corresponding position. When the first warning light is on, it indicates that the connecting pipe is connected to the cold hydrogen pipe, and when the second warning light is on, it indicates that the connecting pipe is connected to the hot hydrogen pipe, which makes it convenient for the staff to accurately inject cold hydrogen or hot hydrogen into the reaction tank, thereby effectively improving the safety of the staff's operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a three-dimensional diagram of this embodiment;

[0016] Figure 2 It is the front view of this embodiment;

[0017] Figure 3 This is a schematic diagram of the top view of the shell structure of this embodiment;

[0018] Figure 4 is a schematic diagram of the three-dimensional structure of the shell of this embodiment;

[0019] Figure 5 is a three-dimensional diagram of the housing of this embodiment;

[0020] Figure 6 for Figure 2 A magnified view of the structure at center.

[0021] In the figure: 1. reaction tank; 2. connecting pipe; 3. connecting pipe; 4. shell; 5. cold hydrogen pipe; 6. hot hydrogen pipe; 7. movable cover; 8. circular sealing gasket; 9. through hole; 10. square rod; 11. first spring; 12. pull plate; 13. blind hole; 14. locking rod; 15. pull ring; 16. fixing ring; 17. second spring; 18. pressure sensor; 19. controller; 20. first warning light; 21. second warning light. DETAILED DESCRIPTION

[0022] See also Figures 1 to 6 , the utility model provides the following technical solutions:

[0023] Embodiment 1:

[0024] A novel propionaldehyde hydrogenation reactor of tube bundle type, comprising a reaction tank 1, a shell 4 and a connecting pipe 2, wherein the shell 4 is arranged on the right side of the reaction tank 1, and a connecting pipe 3 is plugged and fixed on the left side of the shell 4, and the left side of the connecting pipe 3 is plugged and fixed on the outer wall of the reaction tank 1 and communicated with the inner cavity of the reaction tank 1, seven shells 4 are arranged, and the seven shells 4 are equidistantly distributed from top to bottom, the connecting pipe 2 is plugged on the outer wall of the reaction tank 1 and communicated with the inner cavity of the reaction tank 1, the number of the connecting pipe 2 is the same as that of the shell 4, and the connecting pipe 2 is connected to the inner cavity of the reaction tank 1. For each reaction layer, the right side of the shell 4 is respectively plugged and fixed with a cold hydrogen tube 5 and a hot hydrogen tube 6 from front to back, the inner cavity of the shell 4 is provided with a movable cover 7, and a through hole 9 is opened on the right side of the movable cover 7, and a circular sealing gasket 8 is fixedly connected to the left side of the movable cover 7, and the left side of the circular sealing gasket 8 is arranged in affixed with the left side wall of the inner cavity of the shell 4 to improve the sealing effect of the movable cover 7, the right side of the movable cover 7 is arranged in affixed with the cold hydrogen tube 5 and the hot hydrogen tube 6, the front and rear sides of the movable cover 7 are fixedly connected with a square rod 10, and the front and rear sides of the shell 4 are opened with square rods 10 is matched with a square hole, and the other end of the square rod 10 passes through the inner cavity of the adjacent square hole and is fixedly connected with a pull plate 12. The outer walls of the two square rods 10 are sleeved with a first spring 11, and the two ends of the first spring 11 are respectively fixedly connected to the movable cover 7 and the inner wall of the shell 4. The right side of the movable cover 7 is provided with two front and rear blind holes 13, and the right side of the shell 4 is provided with two front and rear through holes, and the inner cavity of the through hole is movably penetrated with a locking rod 14 of the same size as the blind hole 13, and the right ends of the two locking rods 14 are fixedly connected with a pull ring 15, and The outer walls of the two locking rods 14 are both sleeved and fixed with a fixing ring 16, and the outer sides of the two locking rods 14 are both sleeved with a second spring 17, and the two ends of the second spring 17 are respectively fixedly connected to the fixing ring 16 and the inner wall of the shell 4, which can fully ensure the stability of the cold hydrogen and hot hydrogen during transportation. The cold hydrogen pipe 5 and the hot hydrogen pipe 6 are symmetrically arranged front and back with the central axis of the movable cover 7 as the symmetry axis, and the inner diameter length of the cold hydrogen pipe 5 and the hot hydrogen pipe 6 is consistent with the inner diameter length of the through hole 9, so that when the reactor is not injected with hydrogen, the sealing effect of the inner cavity of the shell 4 is guaranteed.

[0025] Working principle: When the utility model is in use, when cold hydrogen needs to be introduced into the reaction tank 1 to adjust the temperature, the front side pull plate 12 is pulled and the movable cover 7 is driven to overcome the resistance of the first spring 11 and move forward horizontally and longitudinally through the square rod 10. When the movable cover 7 moves forward, the pull ring 15 on the adjacent side is pulled to move horizontally to the right, and the locking rod 14 is driven to overcome the resistance of the second spring 17 and move horizontally to the right. After the movable cover 7 touches the adjacent pressure sensor 18, the pull ring 15 is released, so that the locking rod 14 is reset to the left under the action of the rebound force of the second spring 17, so that The left end of the locking rod 14 is inserted into the inner cavity of the blind hole 13 on the adjacent side, so that the movable cover 7 can be clamped and fixed. At this time, the through hole 9 is connected with the cold hydrogen pipe 5, and the connecting pipe 3 and the cold hydrogen pipe 5 form a passage, so that the cold hydrogen can be injected into the reaction tank 1. In addition, when the rear pull plate 12 is pulled to drive the movable cover 7 to move backward and the above operation is repeated, the hot hydrogen can be injected into the reaction tank 1 from the hot hydrogen pipe 6. Two kinds of hydrogen can be directly introduced using one connecting pipe 3, the sealing of the reaction tank 1 is improved, the risk of leakage of the reaction tank 1 is reduced, and the safety of workers is increased.

[0026] Embodiment 2:

[0027] Pressure sensors 18 are fixedly installed on both the front and rear sides of the inner cavity of the shell 4, and a first warning light 20 and a second warning light 21 are fixedly installed on the top of the shell 4 near the front and rear sides respectively, and a controller 19 is fixedly installed on the top of the shell 4 near the right side.

[0028] Working principle: When the utility model is in use, after pulling the movable cover 7 to move, pressure is applied to the pressure sensor 18 through the movable cover 7, so that the pressure sensor 18 sends a signal to the controller 19, and the controller 19 starts the first warning light 20 or the second warning light 21 at the corresponding position. When the first warning light 20 is on, it indicates that the connecting pipe 3 is connected to the cold hydrogen pipe 5 at this time, and when the second warning light 21 is on, it indicates that the connecting pipe 3 is connected to the hot hydrogen pipe 6 at this time, so that it is convenient for the staff to accurately inject cold hydrogen or hot hydrogen into the reaction tank 1, thereby effectively improving the safety of the staff's operation.

Claims

1. A novel propionaldehyde hydrogenation reactor of tube-in-tube bundle type, comprising a reaction tank (1), a shell (4) and a connecting pipe (2), characterized in that: The shell (4) is arranged on the right side of the reaction tank (1), and a connecting pipe (3) is inserted and fixed on the left side of the shell (4). The left side of the connecting pipe (3) is inserted and fixed on the outer wall of the reaction tank (1) and is connected to the inner cavity of the reaction tank (1). Seven shells (4) are provided, and the seven shells (4) are equidistantly distributed from top to bottom. The connecting pipe (2) is inserted on the outer wall of the reaction tank (1) and is connected to the inner cavity of the reaction tank (1). The right side of the shell (4) is respectively inserted and fixed with a cold hydrogen pipe (5) and a hot hydrogen pipe (6) from front to back. The inner cavity of the shell (4) is provided with a movable cover (7), and a through hole (9) is opened on the right side of the movable cover (7), and square rods (10) are fixedly connected to the front and rear sides of the movable cover (7), and square holes matching the square rods (10) are opened on the front and rear sides of the shell (4), and the other end of the square rod (10) passes through the inner cavity of the adjacent square hole and is fixedly connected to a pull plate (12), and the outer walls of the two square rods (10) are sleeved with a first spring (11), and the two ends of the first spring (11) are respectively fixedly connected to the movable cover (7) and the inner wall of the shell (4).

2. A novel propionaldehyde hydrogenation reactor of tube-in-tube type as claimed in claim 1, characterized in that: A circular sealing pad (8) is fixedly connected to the left side of the movable cover (7), and the left side of the circular sealing pad (8) is arranged in close contact with the left side wall of the inner cavity of the shell (4).

3. A novel propionaldehyde hydrogenation reactor of tube-in-tube type as claimed in claim 1, characterized in that: The right side of the movable cover (7) is arranged in close contact with the cold hydrogen pipe (5) and the hot hydrogen pipe (6).

4. A novel propionaldehyde hydrogenation reactor of tube-in-tube type as claimed in claim 1, characterized in that: The right side of the movable cover (7) is provided with two blind holes (13) arranged front and back, the right side of the shell (4) is provided with two through holes arranged front and back, and the inner cavity of the through hole is movably penetrated by a locking rod (14) of the same size as the blind hole (13), the right ends of the two locking rods (14) are fixedly connected to a pull ring (15), and the outer walls of the two locking rods (14) are sleeved and fixed with a fixing ring (16), the outer sides of the two locking rods (14) are sleeved with a second spring (17), and the two ends of the second spring (17) are respectively fixedly connected to the fixing ring (16) and the inner wall of the shell (4).

5. A novel propionaldehyde hydrogenation reactor of tube-in-tube type as claimed in claim 1, characterized in that: Pressure sensors (18) are fixedly mounted on both the front and rear sides of the inner cavity of the shell (4), and a first warning light (20) and a second warning light (21) are fixedly mounted on the top of the shell (4) near the front and rear sides, respectively, and a controller (19) is fixedly mounted on the top of the shell (4) near the right side.

6. A novel propionaldehyde hydrogenation reactor of tube-in-tube type as claimed in claim 1, characterized in that: The number of the connecting pipes (2) is the same as the number of the housing (4).

7. A novel propionaldehyde hydrogenation reactor of tube-in-tube type as claimed in claim 1, characterized in that: The cold hydrogen tube (5) and the hot hydrogen tube (6) are arranged front-to-back symmetrically with the central axis of the movable cover (7) as the symmetry axis, and the inner diameter lengths of the cold hydrogen tube (5) and the hot hydrogen tube (6) are consistent with the inner diameter length of the through hole (9).

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