Gas-liquid separation tubular reactor

Abstract

The utility model discloses a gas-liquid separation tubular reactor, which belongs to the technical field of reactors and comprises an inner cylinder with two ends plugged and transversely arranged, an outer cylinder is coaxially arranged outside the inner cylinder, and an annular space between the inner cylinder and the outer cylinder is of a plugged structure; a stirrer is arranged in the inner cylinder body; a gas-liquid separation tank which upwards penetrates out of the outer barrel in the vertical direction is arranged on the inner barrel, a defoaming device is arranged in the gas-liquid separation tank, and a gas phase outlet is formed in the top end of the gas-liquid separation tank; a feeding hole is formed in one axial end of the inner cylinder body, and a discharging hole is formed in the other axial end of the inner cylinder body; a heat exchange medium inlet is formed in one axial end of the outer cylinder, and a heat exchange medium outlet is formed in the other axial end. According to the utility model, the gas-liquid separation tank and the gas phase buffer tank are arranged on the inner cylinder body, so that a gas storage buffer space is provided for generated gas, and the liquid holdup in the inner cylinder body and the retention time of materials are ensured.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of reactor, specifically relates to a gas-liquid separation tubular reactor. BACKGROUND

[0002] The tubular reactor is more and more applied to chemical production currently, and is used for handling some reactions with gas generation. When the reaction generates gas, the existing tubular reactor only discharges gas through the exhaust pipe arranged on the inner cylinder, and when the gas is not discharged in time, the gas not discharged in time will be mixed with the material in the inner cylinder of the reactor due to the absence of additional gas storage buffer space, thereby causing the material in the reactor to be seriously entrained by foam, affecting the heat transfer of the reactor, and the foam occupies the material space, reduces the liquid holdup of the reactor, and causes insufficient residence time. SUMMARY

[0003] To solve the problem that the existing tubular separator does not have additional gas storage buffer space, the utility model provides a gas-liquid separation tubular reactor.

[0004] A gas-liquid separation tubular reactor, comprising an inner cylinder blocked at both ends and placed horizontally, an outer cylinder coaxially arranged outside the inner cylinder, and an annular space between the inner cylinder and the outer cylinder in a blocking structure.

[0005] An agitator is arranged inside the inner cylinder.

[0006] A gas-liquid separation tank is arranged on the inner cylinder and penetrates the outer cylinder upwards along the vertical direction, a defoaming device is arranged in the gas-liquid separation tank, and a gas phase outlet is arranged at the top end of the gas-liquid separation tank.

[0007] A feed inlet is arranged at one axial end of the inner cylinder, and a discharge outlet is arranged at the other axial end.

[0008] A heat exchange medium inlet is arranged at one axial end of the outer cylinder, and a heat exchange medium outlet is arranged at the other axial end.

[0009] Preferably, the inner cylinder is fixedly provided with a cover plate at both axial ends, and the feed inlet and the discharge outlet are arranged on the corresponding cover plates.

[0010] Preferably, the agitator comprises an agitator shaft extending along the axial direction of the inner cylinder, both axial ends of the agitator shaft are rotationally connected to the corresponding cover plates, and a plurality of agitator blades are uniformly arranged on the agitator shaft along the axial direction.

[0011] Preferably, the height of the bottom edge of the discharge outlet is higher than the height of the top edge of the agitator shaft.

[0012] Preferably, the axial both ends of the outer wall of the inner cylinder are fixedly provided with annular connecting plates, the annular connecting plates are fixedly connected with corresponding cover plates, and the axial both ends of the outer cylinder are fixedly connected with corresponding annular connecting plates.

[0013] Preferably, a baffle assembly is arranged in the annular space between the inner cylinder and the outer cylinder, the baffle assembly is a baffle plate spirally wound around the outer wall of the inner cylinder, and the radially inner side of the baffle plate is fixedly connected with the outer side wall of the inner cylinder.

[0014] Preferably, a plurality of defoamers arranged in the height direction are arranged in the gas-liquid separation tank.

[0015] Preferably, a gas-liquid separation tank is arranged on the inner cylinder and extends in the axial direction of the inner cylinder.

[0016] Preferably, at least two gas-liquid separation tanks arranged in the axial direction of the inner cylinder are arranged on the inner cylinder.

[0017] Preferably, the top end of the gas-liquid separation tank is open as a gas phase outlet, the gas phase outlets of all the gas-liquid separation tanks are communicated to a gas phase buffer tank, and an exhaust port is arranged at the top of the gas phase buffer tank.

[0018] The beneficial effects of the utility model are as follows:

[0019] (1) The utility model discloses a gas-liquid separation tank and a gas phase buffer tank arranged on the inner cylinder, thereby providing a gas storage buffer space for the generated gas, reducing the probability of the serious working condition that the foam of the material in the reactor is seriously entrained due to the mixing of the gas accumulated in the inner cylinder and the material in the reactor, and ensuring the liquid holdup in the inner cylinder and the residence time of the material.

[0020] (2) The defoamer arranged in the gas-liquid separation tank can separate and remove the foam carried in the gas. ACCURATE DRAWINGS

[0021] The drawings accompanying the specification of the present application form a part of the present application and serve to provide further understanding of the present application, and the illustrative embodiments of the present application and their descriptions serve to explain the present application, and do not constitute improper limitations on the present application.

[0022] Figure 1 is a structural schematic view of a gas-liquid separation tubular reactor in the utility model embodiment 2.

[0023] Figure 2 is a structural schematic view of a gas-liquid separation tubular reactor in the utility model embodiment 3.

[0024] Figure 3 is a structural schematic view of a gas-liquid separation tubular reactor in the utility model embodiment 4.

[0025] Figure 4 This is a schematic top view of the gas-liquid separation tubular reactor in Embodiment 4 of this utility model;

[0026] Figure 5 This is a schematic diagram of the structure of the gas-liquid separator of this utility model, in which two defoamers are installed along the height direction.

[0027] in:

[0028] 1-Inner cylinder, 2-Outer cylinder, 3-Gas-liquid separator, 4-Defoamer, 5-Gas phase outlet, 6-Inlet, 7-Outlet, 8-Heat exchange medium inlet, 9-Heat exchange medium outlet, 10-Cover plate, 11-Agitator shaft, 12-Agitator blade, 13-Annular connecting plate, 14-Gas phase buffer tank, 15-Exhaust port, 16-Baffle plate. Detailed Implementation

[0029] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0030] Example 1:

[0031] A gas-liquid separation tubular reactor includes an inner cylinder 1 that is sealed at both ends and placed horizontally, and an outer cylinder 2 that is coaxially arranged outside the inner cylinder 1. The annular space between the inner cylinder 1 and the outer cylinder 2 is a sealed structure.

[0032] An agitator is installed inside the inner cylinder 1;

[0033] The inner cylinder 1 is provided with a gas-liquid separator 3 that extends vertically upward through the outer cylinder 2. The gas-liquid separator 3 is equipped with a defoamer 4, and the top of the gas-liquid separator 3 is provided with a gas phase outlet 5. The gas carrying foam is separated and removed at the defoamer 4, ensuring that most of the gas passing through the defoamer 4 is in the gas phase. The gas-liquid separator 3 on the inner cylinder 1 provides a gas storage buffer space for the generated gas, thereby reducing the probability of severe foam entrainment in the reactor caused by the gas accumulating in the inner cylinder 1 and mixing with the material in the reactor.

[0034] The inner cylinder 1 is provided with a feed inlet 6 at one axial end and a discharge outlet 7 at the other axial end. The position of the gas-liquid interface in the reactor is controlled by adjusting the height of the discharge outlet 7.

[0035] The outer cylinder 2 is provided with a heat exchange medium inlet 8 at one axial end and a heat exchange medium outlet 9 at the other axial end.

[0036] Preferably, the inner cylinder 1 is fixedly provided with cover plates 10 at both axial ends to achieve plugging of the inner cylinder 1, and the feeding port 6 and the discharging port 7 are arranged on the corresponding cover plates 10.

[0037] Preferably, the stirrer comprises a stirring shaft 11 extending in the axial direction of the inner cylinder 1, both axial ends of the stirring shaft 11 are rotationally connected with the corresponding cover plates 10, and a plurality of stirring blades 12 are uniformly arranged on the stirring shaft 11 in the axial direction.

[0038] In the present application, the stirring shaft 11 is connected with a motor for driving the rotation thereof, and the motor can be installed inside or outside the inner cylinder 1. The stirring shaft 11 drives the stirring blades 12 to rotate to achieve stirring of the reaction materials in the inner cylinder 1.

[0039] Preferably, the height of the bottom edge of the discharging port 7 is higher than the height of the top edge of the stirring shaft 11.

[0040] Preferably, annular connecting plates 13 are fixedly arranged at both axial ends of the outer side wall of the inner cylinder 1, the annular connecting plates 13 are fixedly connected with the corresponding cover plates 10, and both axial ends of the outer cylinder 2 are fixedly connected with the corresponding annular connecting plates 13.

[0041] Preferably, a baffle assembly is arranged in the annular space between the inner cylinder 1 and the outer cylinder 2, the baffle assembly comprises baffle plates 16 spirally wound around the outer wall of the inner cylinder 1, and the radially inner side of the baffle plates 16 is fixedly connected with the outer side wall of the inner cylinder 1.

[0042] In the present application, the radially inner side of the baffle plates 16 is welded with the outer side wall of the inner cylinder 1, and a 2-3mm assembly gap is left between the radially outer side of the baffle plates 16 and the inner side wall of the outer cylinder 2.

[0043] The gas-liquid separation tank 3 in the present application occupies a part of the annular space between the inner cylinder 1 and the outer cylinder 2, so the baffle plates 16 need to be prevented from interfering with the gas-liquid separation tank 3 during installation. In order to facilitate installation, a plurality of baffle plates 16 can be arranged.

[0044] Preferably, a plurality of defoamers 4 arranged in the height direction are arranged in the gas-liquid separation tank 3, which can separate the gas step by step to ensure the effect of gas-liquid separation. When two defoamers 4 are arranged in the gas-liquid separation tank 3 in the height direction, the structure is as shown in Figure 5

[0045] Example 2:

[0046] Based on example 1, as Figure 1 ​As shown, the inner cylinder 1 is provided with a gas-liquid separation tank 3 extending along the axial direction of the inner cylinder 1 to increase the gas storage space as much as possible, wherein the length of the gas-liquid separation tank 3 extending along the axial direction of the inner cylinder 1 is as large as possible, as long as the installation space of the heat exchange medium inlet 8 and the heat exchange medium outlet 9 is reserved.

[0047] The gas generated in the gas-liquid separation tubular reactor in Example 2 overflows into the gas-liquid separation tank 3 from the space above the gas-liquid interface, and in the process of moving upward, the gas with a small amount of liquid / foam is separated from the foam / liquid at the position of the foam separator 4, ensuring that most of the gas enters the upper space of the gas-liquid separation tank 3, and the separated gas phase is discharged from the gas phase outlet 5.

[0048] Example 3:

[0049] Based on Example 1, as shown in Figure 2 The inner cylinder 1 is provided with at least two gas-liquid separation tanks 3 arranged along the axial direction of the inner cylinder 1.

[0050] The gas generated in the gas-liquid separation tubular reactor in Example 3 overflows into each gas-liquid separation tank 3 from the space above the gas-liquid interface, and in the process of moving upward, the gas with a small amount of liquid / foam is separated from the foam / liquid at the position of the foam separator 4, ensuring that most of the gas enters the upper space of the gas-liquid separation tank 3, and the separated gas phase is discharged from the gas phase outlet 5.

[0051] Example 4:

[0052] Based on Example 2 or 3, as shown in Figures 3-4 The top end of the gas-liquid separation tank 3 is open as a gas phase outlet 5, and the gas phase outlets 5 of all gas-liquid separation tanks 3 are communicated to a gas phase buffer tank 14, and the top of the gas phase buffer tank 14 is provided with a gas discharge port 15. In this application, the gas phase buffer tank 14 is used for gas collection and discharge, the bottom of the gas phase buffer tank 14 is communicated with a plurality of gas-liquid separation tanks 3, and the number of gas discharge ports 15 on the gas phase buffer tank 14 can be appropriately adjusted according to the working condition. The setting of the gas phase buffer tank 14 further increases the gas storage buffer space.

[0053] The gas generated in the gas-liquid separation tubular reactor in Example 4 overflows into the gas-liquid separation tank 3 from the space above the gas-liquid interface, and in the process of moving upward, the gas with a small amount of liquid / foam is separated from the foam / liquid at the position of the foam separator 4, ensuring that most of the gas enters the gas phase buffer tank 14, and the separated gas phase is collected in the gas phase buffer tank 14 and discharged from the gas discharge port 15.

[0054] The utility model discloses above although the specific embodiment of the utility model has been described in conjunction with the drawing, is not the limitation of the utility model, and the person skilled in the art should understand that on the basis of the technical scheme of the utility model, various modifications or deformation that the person skilled in the art does not need to pay creative labour still is within the protection scope of the utility model.

Claims

1. A gas-liquid separation tubular reactor, characterized by, The application relates to a vertical stirring device for a chemical reaction tank, which comprises a closed inner cylinder (1) arranged transversely, an outer cylinder (2) coaxially arranged outside the inner cylinder (1), and an annular space between the inner cylinder (1) and the outer cylinder (2) in a closed structure. An agitator is arranged inside the inner cylinder (1). A gas-liquid separation tank (3) is arranged on the inner cylinder (1) and penetrates the outer cylinder (2) upwards in the vertical direction, a defoaming device (4) is arranged in the gas-liquid separation tank (3), and a gas phase outlet (5) is arranged at the top end of the gas-liquid separation tank (3). A feeding port (6) is arranged at one axial end of the inner cylinder (1), and a discharging port (7) is arranged at the other axial end. A heat exchange medium inlet (8) is arranged at one axial end of the outer cylinder (2), and a heat exchange medium outlet (9) is arranged at the other axial end.

2. The gas-liquid separation tubular reactor of claim 1, wherein, Cover plates (10) are fixedly arranged at the two axial ends of the inner cylinder (1), and the feeding port (6) and the discharging port (7) are arranged on the corresponding cover plates (10).

3. The gas-liquid separation tubular reactor of claim 2, wherein, The agitator comprises an agitator shaft (11) extending in the axial direction of the inner cylinder (1), the two axial ends of the agitator shaft (11) are rotationally connected with the corresponding cover plates (10), and a plurality of agitating blades (12) are uniformly arranged on the agitator shaft (11) in the axial direction.

4. The gas-liquid separation tubular reactor according to claim 3, wherein The height of the bottom edge of the discharging port (7) is higher than the height of the top edge of the agitator shaft (11).

5. The gas-liquid separation tubular reactor of claim 2, wherein, Annular connecting plates (13) are fixedly arranged at the two axial ends of the outer side wall of the inner cylinder (1), the annular connecting plates (13) are fixedly connected with the corresponding cover plates (10), and the two axial ends of the outer cylinder (2) are fixedly connected with the corresponding annular connecting plates (13).

6. The gas-liquid separation tubular reactor of claim 1, wherein, A baffle assembly is arranged in the annular space between the inner cylinder (1) and the outer cylinder (2), the baffle assembly is a baffle plate (16) spirally wound around the outer wall of the inner cylinder (1), and the radial inner side of the baffle plate (16) is fixedly connected with the outer side wall of the inner cylinder (1).

7. The gas-liquid separation tubular reactor of claim 1, wherein, A plurality of defoaming devices (4) are arranged in the gas-liquid separation tank (3) in the height direction.

8. The gas-liquid separation tubular reactor of claim 1, wherein, One gas-liquid separation tank (3) is arranged on the inner cylinder (1) and extends in the axial direction of the inner cylinder (1).

9. The gas-liquid separation tubular reactor of claim 1 wherein, At least two gas-liquid separation tanks (3) are arranged on the inner cylinder (1) in the axial direction of the inner cylinder (1).

10. The gas-liquid separation tubular reactor according to claim 8 or 9, characterized in that The top end of the gas-liquid separation tank (3) is open as a gas phase outlet (5), the gas phase outlets (5) of all the gas-liquid separation tanks (3) are communicated to a gas phase buffer tank (14), and an exhaust port (15) is arranged at the top of the gas phase buffer tank (14).

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