Gas distribution pipe and reaction device thereof

Abstract

The gas distribution pipe provided by the utility model is used for introducing reaction gas into a barrel of a reaction device to carry out gas-liquid mixing reaction, and comprises a mounting and fixing part and a gas distribution part connected with the mounting and fixing part, the gas distribution part is bent into an arc shape, and the gas distribution part is provided with vent holes. And the gas distribution part is bent to form an arc concentric with the cylinder body. And the sweeping angle of the gas distribution part relative to the axis of the cylinder body is less than 180 degrees. By adopting the gas distribution pipe disclosed by the utility model, the reaction gas in the reaction device can be distributed more uniformly, so that the gas-liquid mixing reaction efficiency can be improved.

Description

Technical Field

[0001] This utility model relates to a gas distribution pipe and its reaction device. Specifically, it relates to a gas distribution pipe used in reaction equipment that requires the introduction of reaction gases in industries such as biology, medicine, and chemical engineering, such as bioreactors, and to a reaction device using the gas distribution pipe. Background Technology

[0002] Currently, in industries such as biology, medicine, and chemicals, reaction equipment that requires the introduction of reaction gases is commonly used. Most of these reaction equipment are equipped with stirring devices. The gas distribution pipe, which constitutes the gas distribution device for introducing reaction gases, is generally arranged below the stirring blades at the bottom of the stirring device, close to the bottom of the reaction equipment. Since the cylindrical part of the reaction equipment near the bottom of the equipment is the welded part of the cylindrical structure, it is usually impossible to insert the gas distribution pipe through the hole in the cylindrical part with the welded part. Therefore, the insertion port on the cylindrical part of the gas distribution pipe is opened above the aforementioned welded part. This position is usually at the same level as or slightly higher than the level of the stirring blades at the bottom of the stirring device.

[0003] On the other hand, gas distribution pipes in existing reaction equipment typically consist of steel pipes with numerous vent holes drilled into them. These holes are located at the top, middle, and bottom of the pipe's cross-section, arranged in a staggered pattern to facilitate uniform gas distribution within the reaction apparatus. However, the holes in the steel pipes are very small in diameter and densely packed, requiring removal for cleaning after a period of use. Therefore, the gas distribution pipes need to be designed for easy disassembly. For this reason, existing gas distribution pipes are generally straight pipes, facilitating insertion and removal. However, in applications requiring high gas-liquid mixing and large ventilation volumes, a straight gas distribution pipe, due to its limited length, may not meet the ventilation requirements under reactor operating conditions. Furthermore, a straight pipe can result in uneven gas distribution. Utility Model Content

[0004] This invention is a solution to the problems existing in the prior art, aiming to provide a gas distribution pipe that makes the reaction gas distribution more uniform, thereby improving the efficiency of gas-liquid mixing reaction, and a reaction device using such a gas distribution pipe.

[0005] This utility model provides a gas distribution pipe for introducing reaction gas into the cylinder of a reaction device for gas-liquid mixing reaction. It includes a mounting and fixing part and a gas distribution part connected to the mounting and fixing part. The gas distribution part is curved into an arc shape and has a vent hole.

[0006] Preferably, the gas distribution section is curved into an arc shape concentric with the cylinder.

[0007] More preferably, the sweep angle of the gas distribution section relative to the axis of the cylinder is less than 180°.

[0008] More preferably, the sweep angle of the gas distribution section relative to the axis of the cylinder is greater than or equal to 130° and less than or equal to 165°.

[0009] In addition, preferably, the connection between the gas distribution section and the mounting and fixing section is curved.

[0010] Preferably, the gas distribution section is provided with vent holes in all directions.

[0011] This utility model also provides a reaction device, which includes the above-mentioned gas distribution pipe, cylinder and stirring part, the stirring part is disposed in the cylinder, the gas distribution pipe extends from the outside of the cylinder into the cylinder, the mounting and fixing part passes through the cylinder and is detachably connected to the cylinder, and the gas distribution part avoids the stirring part.

[0012] Preferably, the reaction apparatus is provided with two gas distribution pipes.

[0013] More preferably, the two gas distribution pipes are arranged in a 180° circumferential array relative to the axis of the cylinder.

[0014] More preferably, the distance between the gas distribution pipe and the inner wall of the cylinder is less than or equal to half the radius of the cylinder.

[0015] By using the gas distribution pipe and reaction device provided by this utility model, the distribution of reaction gas in the reaction device can be more uniform, thereby improving the efficiency of gas-liquid mixing reaction. Attached Figure Description

[0016] Figure 1 This is an elevation view showing the positional relationship between the gas distribution pipe and the components of the reaction device of this utility model;

[0017] Figure 2 This is a planar schematic diagram showing the positional relationship between the gas distribution pipe and the reaction device components of this utility model.

[0018] Figure 3 This is an enlarged schematic diagram showing the installation assembly of the gas distribution pipe of this utility model. Detailed Implementation

[0019] The technical solution and effects of this utility model are described in detail below through specific embodiments. The following embodiments are for illustrative purposes only, and the utility model is not limited to the described embodiments or examples. Simple modifications made to this utility model based on the concept of this utility model are all within the scope of protection claimed by this utility model.

[0020] The gas distribution device 10 provided by this utility model, such as Figure 1 and Figure 2 As shown, it is a gas distribution device that is installed on the cylinder 11 of a biomedical-grade reaction device, which serves as a reaction apparatus, with a portion inserted into the cylinder 11.

[0021] The gas distribution device 10 includes a gas distribution pipe 12 and a mounting component 13 for detachably mounting and fixing the gas distribution pipe 12 onto the cylinder 11.

[0022] The gas distribution pipe 12 includes a mounting and fixing part 12a, a bending part 12b, a gas distribution part 12c, and an end cap 12d. The bending part 12b creates a curved transition at the connection between the gas distribution part 12c and the mounting and fixing part 12a. The gas distribution pipe 12 is formed by bending a steel pipe. The mounting and fixing part 12a has a flared flat connector 12e at its end, which connects to a pipeline (not shown) supplying the reaction gas. The bending part 12b is formed by bending the gas distribution part 12c according to the relative position of the stirring blade 14a, which forms the lowermost layer of the stirring section 14 inside the cylinder 11 of the reaction apparatus. In other words, by bending the gas distribution pipe 12 to form the bending part 12b, the gas distribution part 12c is positioned precisely below the stirring blade 14a of the lowermost layer of the stirring section 14 when the mounting and fixing part 12a is mounted and fixed to the cylinder 11.

[0023] The gas distribution section 12c is formed in an arc shape. Specifically, in this embodiment, the cylinder 11 is a cylinder, and the gas distribution section 12c is formed as a semi-annular shape with concentric circles to the cylinder 11. Wherein, as... Figure 2 As shown, the sweep angle α of the gas distribution section 12c relative to the axis L of the cylinder 11 is less than 180°. Preferably, the sweep angle α of the gas distribution section 12c relative to the axis L of the cylinder 11 is greater than or equal to 130° and less than or equal to 165°.

[0024] In addition, the gas distribution section 12c has multiple vent holes 12f on its outer peripheral surface. The drilling positions of the vent holes 12f are staggered at the upper, middle, and lower parts of the cross-section of the gas distribution section 12c. This arrangement facilitates the uniform distribution of the reaction gas delivered through the gas distribution pipe 12 within the reaction device. The specific drilling positions and the number of vent holes 12f are determined based on different reaction devices and related processes. They are usually determined through calculation and simulation to ensure a more uniform gas distribution within the reaction device and to promote gas-liquid mixing. No particular limitation is made here. The end cap 12d is fixed (e.g., welded) to the end of the gas distribution pipe 12 near the gas distribution section 12c, acting as a plug.

[0025] In addition, the gas distribution device 10 of this utility model also includes a sleeve 15 fitted around the outer periphery of the gas distribution pipe 12. The sleeve 15 serves to reinforce and protect the gas distribution pipe 12, and its material can be the same as or different from that of the gas distribution pipe 12. The sleeve 15 is pre-fitted onto the end of the gas distribution pipe 12 near the mounting and fixing part 12a. Its length is set to at least cover a part of the mounting and fixing part 12a and a part of the bend 12b. Alternatively, its length can be set to cover the entire mounting and fixing part 12a and the entire bend 12b, or the length of the sleeve 15 can be set so as not to cover the gas distribution part 12c where the vent hole 12f is provided. The end of the sleeve 15 near the bend 12b is provided with a cap 15a. Specifically, the cap 15a has a hole, and the gas distribution pipe 12 with the sleeve 15 is passed through the cap 15a and then the cap 15a is welded to the sleeve 15. The sleeve 15 is bent and deformed together with the gas distribution pipe 12 while it is pre-fitted onto the gas distribution pipe 12. In other words, the sleeve 15 and the gas distribution pipe 12 are bent and formed together.

[0026] In addition, the gas distribution device 10 of this utility model, such as Figures 1 to 3As shown, the device is mounted and fixed to the cylinder 11 by an installation assembly 16. Specifically, the installation assembly 16 includes a flange 16a, a gland 16b, an end cap 16c, a positioning plate 16d, and a sealing ring 16e. The gland 16b is a flat cap with bolt mounting holes. The flange 16a has a tapered slope on its inner surface, and its cut is cut to the same shape as the inner surface of the cylinder 11. The end cap 16c has a sealing groove for installing and tightening the sealing ring 16e. Furthermore, the flange 16a is connected to the gland 16b and the end cap 16c by screws 17 and cap nuts 18 to tighten the sealing ring 16e and seal the entire device. The positioning plate 16d is welded to the flange 16a for positioning during the installation of the gas distribution pipe 12. The sleeve 15 is welded to the end cap 16c to seal the gap between the sleeve 15 and the gas distribution pipe 12, preventing media from entering.

[0027] The gas distribution device 10 of this utility model, such as Figure 2 As shown, one gas distribution pipe 12 is provided on each side of the stirring blade 14a, sandwiching it between the blades. That is, the reaction apparatus has two gas distribution pipes 12. Furthermore, the two gas distribution pipes 12 are arranged in a 180° circumferential array relative to the axis of the cylinder 11. Additionally, the distance between the gas distribution pipe 12 and the inner wall of the cylinder 11 is set to be less than or equal to half the radius of the cylinder 11.

[0028] When cleaning the inside of the reaction device, the stirring blade 14a is soaked in cleaning solution. After soaking, the cleaning solution on the gas distribution pipe 12 flows down the angle to the bottom of the reaction device and is discharged into an external pipe (not shown).

[0029] On the other hand, after the internal cleaning is completed, the gas distribution device 10 is extracted from the reaction device, and the gas distribution pipe 12 is cleaned separately. After cleaning, it is purged with compressed air to prevent the vent from being blocked. After cleaning, the positioning plate 16d on the flange 16a is located first, and after positioning, the gas distribution pipe 12 is slowly installed into the distribution device according to the installation sequence. Finally, the fasteners are tightened to seal, and the flange 16a and the pressure cap 16b are pressed together to prevent leakage.

[0030] The gas distribution device 10, gas distribution pipe 12, and reaction device of this utility model have the following advantages:

[0031] 1) The gas distribution pipe 12 constituting the gas distribution device 10 of this utility model has a gas distribution section 12c formed as an arc-shaped semi-circle and concentric with the cylinder 11. Compared with the prior art where the gas distribution section 12c is formed as a straight line, the length of the gas distribution section 12c is increased, which can make the distribution of reaction gas in the reaction device more uniform and thus improve the efficiency of gas-liquid mixing reaction.

[0032] 2) The sweep angle α of the gas distribution section 12c relative to the axis L of the cylinder 11 is less than 180°. Preferably, the sweep angle α of the gas distribution section 12c relative to the axis L of the cylinder 11 is greater than or equal to 130° and less than or equal to 165°. This allows for easy extraction of the gas distribution pipe 12 during cleaning and ensures that the gas distribution section 12c is as long as possible and has as many vents 12f as possible, thereby improving the efficiency of the gas-liquid mixing reaction.

[0033] 3) The specific location and number of vent holes 12f opened in the gas distribution section 12c of the gas distribution pipe 12 of this utility model are determined according to different reaction devices and their related processes (usually through calculation and simulation). This makes the distribution of reaction gas inside the reaction device more uniform and more conducive to gas-liquid mixing.

[0034] The implementation scheme of the gas distribution device 10 of this utility model can be further modified as follows.

[0035] In the above embodiment, the gas distribution section 12c is formed in an arc shape. Specifically, in this embodiment, the cylinder 11 is a cylinder, and the gas distribution section 12c is formed in a semi-annular shape with concentric circles to the cylinder 11. However, the gas distribution section 12c may also be formed in an arc shape other than a semi-annular shape.

[0036] In the above embodiment, the end cap 12d is formed separately and fixed to one end of the gas distribution section 12c of the gas distribution pipe 12 by welding. However, the end cap 12d can also be formed integrally with the gas distribution pipe 12 (the gas distribution section 12c). In addition, multiple vent holes 12f can also be provided on the end cap 12d.

[0037] In the above embodiment, the gas distribution device 10 is provided on each side of the stirring blade 14a, sandwiching the stirring blade 14a. However, only one set may be provided.

[0038] In the above embodiments, this invention is applied to biomedical-grade sanitary reaction equipment. It can also be applied to other reaction equipment in the biological, pharmaceutical, and chemical industries.

[0039] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction.

Claims

1. A gas distribution pipe for introducing reactive gases into the cylinder of a reaction apparatus for gas-liquid mixing reaction, characterized in that, It includes a mounting and fixing part and a gas distribution part connected to the mounting and fixing part. The gas distribution part is curved into an arc shape and has a vent hole.

2. The gas distribution pipe as described in claim 1, characterized in that, The gas distribution section is curved into an arc shape concentric with the cylinder.

3. The gas distribution pipe as described in claim 1, characterized in that, The sweep angle of the gas distribution section relative to the axis of the cylinder is less than 180°.

4. The gas distribution pipe as described in claim 3, characterized in that, The sweep angle of the gas distribution section relative to the axis of the cylinder is greater than or equal to 130° and less than or equal to 165°.

5. The gas distribution pipe according to any one of claims 1 to 4, characterized in that, The connection between the gas distribution section and the mounting and fixing section is curved and transitioned.

6. The gas distribution pipe according to any one of claims 1 to 4, characterized in that, The gas distribution section is provided with vent holes in all directions.

7. A reaction apparatus, characterized in that, The device includes a gas distribution pipe, a cylinder, and a stirring part as described in any one of claims 1 to 4, wherein the stirring part is disposed in the cylinder, the gas distribution pipe extends from the outside of the cylinder into the cylinder, the mounting and fixing part passes through the cylinder and is detachably connected to the cylinder, and the gas distribution part avoids the stirring part.

8. The reaction apparatus as described in claim 7, characterized in that, The reaction apparatus is equipped with two gas distribution pipes.

9. The reaction apparatus as described in claim 7, characterized in that, The two gas distribution pipes are arranged in a 180° circumferential array relative to the axis of the cylinder.

10. The reaction apparatus according to any one of claims 7 to 9, characterized in that, The distance between the gas distribution pipe and the inner wall of the cylinder is less than or equal to half the radius of the cylinder.

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