Device for preventing precipitation at bottom of reaction kettle

Abstract

The utility model belongs to the field of reaction kettle equipment, and particularly relates to a device for preventing precipitation at the bottom of a reaction kettle. According to the utility model, by arranging the connecting pipe and the blowback piece, gas is introduced into the connecting pipe from the ventilation interface, so that the gas enters the connecting pipe and is discharged from the ventilation hole formed in the bottom of the blowback piece communicated with the connecting pipe, and the sintering net at the bottom of the reaction kettle is purged, and sediments on the sintering net are difficult to gather by utilizing airflow; further, the sodium hyaluronate is effectively prevented from being accumulated on the surface of the sintering net to form a sticky substance, the sodium hyaluronate is further promoted to be completely dissociated, and the product yield is improved. The device for preventing precipitation at the bottom of the reaction kettle effectively solves the problems that materials on a sintering net at the bottom of the reaction kettle are accumulated and are difficult to disperse, and a solution in the reaction kettle is difficult to discharge, is favorable for improving the mixing uniformity between the materials and a solvent in the reaction kettle, and further improves the yield of a product.

Description

Technical Field

[0001] The utility model belongs to the field of reactor equipment, and particularly relates to a device for preventing sedimentation at the bottom of a reactor. Background Art

[0002] In the sodium hyaluronate production and preparation process, one of the process steps is to have a sintered wire reactor at the bottom, where sodium hyaluronate solution and quaternary ammonium salt undergo a complex reaction. Due to the large viscosity of the sediment in the reactor after the complex reaction, stirring by a stirring paddle alone cannot remove the sediment from the sintered wire, causing the sintered wire at the bottom of the reactor to form a very sticky substance. Further, the sticky substance formed on the sintered wire very easily causes the sintered wire to be blocked, causing the solution in the reactor to be discharged from the bottom sintered wire poorly, resulting in drainage difficulties. In addition, in subsequent process steps, when sodium hyaluronate is subjected to a dissociation reaction, the sticky substance adhering to the sintered wire cannot be dissociated, further reducing the output of sodium hyaluronate.

[0003] Therefore, a new type of anti-sedimentation device is urgently needed to solve the current problem. Utility Model Content

[0004] The utility model aims to overcome the defects in the prior art of sodium hyaluronate production process in which the sintered mesh at the bottom of the reactor is easily clogged, resulting in poor drainage of the solution in the reactor from the bottom sintered mesh, difficulty in draining the liquid, and inability to dissociate the sticky substance adhered to the sintered mesh. A device for preventing precipitation at the bottom of the reactor is provided to overcome the above defects.

[0005] In order to achieve the above-mentioned purpose of the invention, the present invention is implemented through the following technical solutions:

[0006] A device for preventing sedimentation at the bottom of a reaction kettle, comprising:

[0007] A connecting pipe is provided inside the reactor, a sintered mesh is provided at the bottom of the reactor, and an upper end of the connecting pipe passes through the top of the reactor and extends upward to be provided with a ventilation interface;

[0008] The back-flush component is arranged at the lower end of the connecting pipe and is connected thereto, and the back-flush component is located above the sintered mesh. A plurality of vent holes are arranged at the bottom of the back-flush component.

[0009] The utility model includes a connecting pipe disposed within a reactor. A sintered mesh is disposed at the bottom of the reactor. The upper end of the connecting pipe passes through the top of the reactor and extends upward to provide a ventilation port. The utility model also includes a backflush component. The backflush component is disposed at the lower end of the connecting pipe and communicates with the connecting pipe, and is located above the sintered mesh. A plurality of ventilation holes are provided at the bottom of the backflush component.

[0010] The utility model provides a connecting pipe and a back-blowing part, and introduces gas from the vent interface into the connecting pipe, so that the gas enters the connecting pipe and is discharged from the vent hole provided at the bottom of the back-blowing part connected thereto, thereby purging the sintered mesh at the bottom of the reactor, and utilizing the air flow to make it difficult for the precipitate on the sintered mesh to gather, thereby effectively preventing it from accumulating on the surface of the sintered mesh to form a sticky substance, further promoting the complete dissociation of sodium hyaluronate and improving the product yield. The device for preventing precipitation at the bottom of the reactor in the utility model effectively solves the problems of material accumulation on the sintered mesh at the bottom of the reactor, difficulty in dispersion, and difficulty in draining the solution in the reactor, helps to improve the mixing uniformity between the material and the solvent in the reactor, and further improves the product yield. The device for preventing precipitation at the bottom of the reactor in the utility model has a simple structure and low cost, is applicable to most reactors, and is conducive to promotion and application in production practice.

[0011] Preferably, the ventilation interface is connected to external compressed air.

[0012] Through the above arrangement, compressed air is used to apply pressure, so that air enters the connecting pipe from the ventilation interface and is discharged from the ventilation hole provided at the bottom of the back-flushing part connected to the connecting pipe, thereby purging the sintered mesh at the bottom of the reactor. The air flow is used to make it difficult for the precipitates on the sintered mesh to accumulate, thereby effectively preventing them from accumulating on the surface of the sintered mesh to form a sticky substance.

[0013] Preferably, the number of the connecting pipe is at least one.

[0014] As a further preference, the number of the connecting pipes is two.

[0015] When there are two or more connecting tubes, when compressed air is introduced into the vent port located above one of the connecting tubes, the vent ports located above the other or all remaining connecting tubes are simultaneously sealed, thereby ensuring that air always enters the connecting tubes through only one vent port. This helps to precisely control the direction and transmission path of the airflow, thereby meeting the requirements of the process preparation and improving the overall sealing and safety of the device.

[0016] Preferably, the backflush member is in the shape of a circular ring.

[0017] This arrangement effectively ensures that the air entering the vent port is evenly distributed within the backflush element. This allows the air to be discharged from the vent holes at the bottom of the backflush element to more evenly impact and sweep the sintered mesh at the bottom of the reactor, effectively breaking up any accumulated material adhering to the mesh. Furthermore, the annular structure of the backflush element provides a larger backflush area. Furthermore, the annular design facilitates evenly ejecting air along the circumference of the ring, forming an annular airflow that promotes the flow of material at the bottom of the reactor, ensuring thorough mixing within the reactor. This enhances mixing, improves reaction efficiency, and further increases product yield.

[0018] Preferably, a plurality of vent holes are arranged radially and evenly at intervals on the bottom of the backflush member.

[0019] The radially arranged air holes ensure that the air ejected from the backflush element forms an evenly distributed flow at the bottom of the reactor, effectively impacting and breaking up any accumulated material on the sintering grid. This effectively prevents localized accumulation on the grid, which can lead to drainage difficulties and uneven mixing. Furthermore, the air ejected from these radially arranged air holes forms a circular, diffuse airflow, promoting material flow at the bottom of the reactor and further enhancing material mixing.

[0020] Preferably, 3 to 6 rows of ventilation holes are provided at the bottom of the backflush member.

[0021] Providing multiple rows of vent holes helps to increase the backflush area, allowing air to blow to more areas at the bottom of the reactor, further improving the backflush efficiency.

[0022] Preferably, the angle formed between the center of the longitudinal section of the backflush component and the two vent holes located at the end is 90-135°.

[0023] By controlling the angle formed between the center of the longitudinal section of the back-blowing piece and the two vents located at the end, the amount of air discharged from the vents can be flexibly adjusted, thereby controlling the amount of air flow and the impact force for blowing the sintered mesh, thereby ensuring that the distance between the bottom of the back-blowing piece and the sintered mesh is adapted.

[0024] Preferably, the connecting pipe and the backflush component are both made of stainless steel.

[0025] Stainless steel has excellent corrosion resistance, wear resistance, and thermal insulation properties, which helps to extend the overall service life of the device.

[0026] Therefore, the utility model has the following beneficial effects:

[0027] (1) The utility model provides a connecting pipe and a back-flushing component, and introduces gas from the vent interface into the connecting pipe, so that the gas enters the connecting pipe and is discharged from the vent hole provided at the bottom of the back-flushing component connected thereto, thereby purging the sintered mesh at the bottom of the reactor, and utilizing the air flow to make it difficult for the precipitates on the sintered mesh to accumulate, thereby effectively preventing the precipitates from accumulating on the surface of the sintered mesh to form a sticky substance, further promoting the complete dissociation of sodium hyaluronate and improving the product yield;

[0028] (2) The device for preventing sedimentation at the bottom of the reactor in the present invention effectively solves the problem of material accumulation on the sintered mesh at the bottom of the reactor, difficulty in dispersion, and difficulty in draining the solution in the reactor, which helps to improve the mixing uniformity between the material and the solvent in the reactor and further improve the yield of the product;

[0029] (3) The device for preventing sedimentation at the bottom of the reactor in the utility model has a simple structure and low cost, is applicable to most reactors, and is conducive to its promotion and application in production practice. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 Schematic diagram of the overall structure of the device to prevent precipitation at the bottom of the reactor.

[0031] Figure 2 This is a schematic diagram of the backflush component when viewed from above.

[0032] Figure 3 Schematic diagram of the assembly structure of the device for preventing precipitation at the bottom of the reactor and the reactor.

[0033] Figure 4 This is a schematic diagram when the angle formed between the center of the longitudinal section of the backflush component and the two vent holes located at the end is 90°.

[0034] Figure 5 This is a schematic diagram when the angle formed between the center of the longitudinal section of the backflush component and the two vent holes located at the end is 135°.

[0035] In the figure: connecting pipe 1; reactor 2; sintered mesh 3; ventilation interface 4; backflush part 5; ventilation hole 6. DETAILED DESCRIPTION

[0036] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments. Based on these descriptions, a person skilled in the art will be able to implement the present invention. Furthermore, the embodiments of the present invention described below generally represent only a portion of the present invention, rather than all of the embodiments. Therefore, all other embodiments derived by a person skilled in the art based on the embodiments of the present invention without inventive effort should fall within the scope of protection of the present invention.

[0037] Example 1

[0038] like Figure 1-3 As shown, the present invention includes a connecting pipe 1 disposed within a reactor 2. A sintered mesh 3 is disposed at the bottom of the reactor 2. The upper end of the connecting pipe 1 passes through the top of the reactor 2 and extends upward to provide a vent port 4. The present invention also includes a backflush member 5. The backflush member 5 is disposed at the lower end of the connecting pipe 1 and communicates with the connecting pipe 1. The backflush member 5 is positioned above the sintered mesh 3. A plurality of vent holes 6 are provided at the bottom of the backflush member 5.

[0039] The utility model provides a connecting pipe 1 and a back-blowing part 5, and introduces gas into the connecting pipe 1 from the vent interface 4, so that the gas enters the connecting pipe 1 and is discharged from the vent hole 6 provided at the bottom of the back-blowing part 5 connected thereto, thereby purging the sintered mesh 3 at the bottom of the reactor 2, and utilizing the air flow to make it difficult for the precipitate on the sintered mesh 3 to accumulate, thereby effectively preventing it from accumulating on the surface of the sintered mesh 3 to form a sticky substance, further promoting the complete dissociation of sodium hyaluronate and improving the product yield. The device for preventing precipitation at the bottom of the reactor 2 in the utility model effectively solves the problems of material accumulation on the sintered mesh 3 at the bottom of the reactor 2, difficulty in dispersion, and difficulty in draining the solution in the reactor 2, helps to improve the mixing uniformity between the material and the solvent in the reactor 2, and further improves the product yield. The device for preventing precipitation at the bottom of the reactor 2 in the utility model has a simple structure and low cost, is applicable to most reactors 2, and is conducive to promotion and application in production practice.

[0040] As an implementation manner, the ventilation interface 4 is externally connected to compressed air.

[0041] Through the above arrangement, compressed air is pressurized to force air into the connecting pipe 1 from the vent interface 4 and out from the vent hole 6 provided at the bottom of the backflush member 5 connected to the connecting pipe 1, thereby purging the sintered mesh 3 at the bottom of the reactor 2. The airflow makes it difficult for the precipitates on the sintered mesh 3 to accumulate, thereby effectively preventing the precipitates from accumulating on the surface of the sintered mesh 3 to form a sticky substance.

[0042] As an embodiment, the number of the connecting pipe 1 is at least one.

[0043] As another embodiment, the number of connecting pipes 1 is two.

[0044] When there are two or more connecting tubes 1, when compressed air is introduced into the vent port 4 provided above one of the connecting tubes 1, the vent ports 4 provided above the other or all remaining connecting tubes 1 are sealed simultaneously, thereby ensuring that air always enters the connecting tube 1 from only one vent port 4. This helps to precisely control the direction and transmission path of the airflow, thereby meeting the requirements of process preparation and helping to improve the overall sealing and safety of the device.

[0045] As an embodiment, the backflush member 5 is in the shape of a circular ring.

[0046] This arrangement effectively ensures that the air introduced through the vent port 4 is evenly distributed within the backflush member 5. This allows the air to be discharged from the vent holes 6 provided at the bottom of the backflush member 5 to more evenly impact and sweep the sintered mesh 3 at the bottom of the reactor 2, thereby more effectively breaking up any material adhering to or accumulating on the sintered mesh 3. Furthermore, the annular structure of the backflush member 5 helps provide a larger backflush area. Furthermore, the annular design facilitates the uniform ejection of air along the circumference of the ring, forming an annular airflow that promotes the flow of material at the bottom of the reactor 2, thereby ensuring sufficient mixing of the material within the reactor 2, enhancing the mixing effect, improving reaction efficiency, and further increasing product yield.

[0047] As an embodiment, a plurality of vent holes 6 are arranged radially and evenly at intervals on the bottom of the back-flushing member 5 .

[0048] The radially arranged air holes 6 help ensure that the air ejected from the backflush element 5 forms a uniformly distributed airflow at the bottom of the reactor 2, thereby more effectively impacting and breaking up material accumulated on the sintering mesh 3, effectively avoiding localized accumulation on the sintering mesh 3 that can lead to drainage difficulties and uneven mixing. Furthermore, the air ejected from the radially arranged air holes 6 forms a circular airflow that diffuses in all directions, helping to promote material flow at the bottom of the reactor 2 and further enhancing material mixing.

[0049] As an embodiment, 3 to 6 rows of vent holes 6 are provided at the bottom of the backflush member 5 .

[0050] Providing multiple rows of vent holes 6 helps to increase the backflushing area, allowing air to be blown to more areas at the bottom of the reactor 2, further improving the backflushing efficiency.

[0051] As an embodiment, the angle formed between the center of the longitudinal section of the back-blowing member 5 and the two vent holes 6 located at the end is 90-135°.

[0052] By controlling the angle formed between the center of the longitudinal section of the back-blowing piece 5 and the two vents 6 located at the end, the amount of air discharged from the vents 6 can be flexibly adjusted, thereby controlling the amount of air used to purge the sintered mesh 3 and the impact force, thereby ensuring that the distance between the bottom of the back-blowing piece 5 and the sintered mesh 3 is adapted.

[0053] As an embodiment, the connecting pipe 1 and the backflush component 5 are both made of stainless steel.

[0054] Stainless steel has excellent corrosion resistance, wear resistance, and thermal insulation properties, which helps to extend the overall service life of the device.

[0055] The working principle of this utility model is:

[0056] Ensure that one of the vent ports 4 is connected to the external compressed air, and seal all the remaining vent ports 4 so that the subsequent compressed air enters the backflush component 5 connected to the lower end of the stainless steel connecting pipe 1. The bottom of the backflush component 5 is provided with 3 to 6 rows of vent holes 6 of the same aperture size. The angle formed between the center of the longitudinal section of the backflush component 5 and the two vent holes 6 at the end is 90 to 135 degrees (such as Figure 4-5 When the distance between the bottom of the backflush member 5 and the sintered mesh 3 at the bottom of the reactor 2 is large, fewer rows of vent holes 6 can be provided at the bottom of the backflush member 5. This reduces the angle between the center of the longitudinal section of the backflush member 5 and the two vent holes 6 at the ends, thereby increasing the impact force of the backflush member 5 and concentrating the purge of the sintered mesh 3. When the distance between the bottom of the backflush member 5 and the sintered mesh 3 at the bottom of the reactor 2 is small, more rows of vent holes 6 can be provided at the bottom of the backflush member 5. This reduces the angle between the center of the longitudinal section of the backflush member 5 and the two vent holes 6 at the ends, thereby increasing the purge area of the backflush member 5. When the complexation precipitation operation begins in the reactor 2, compressed air is turned on. When the compressed air passes through the vent holes 6 at the bottom of the backflush member 5, it purges the sintered mesh 3 at the bottom of the reactor 2 from all angles, preventing the accumulation of precipitated material on the sintered mesh 3 at the bottom of the reactor 2.

Claims

1. A device for preventing precipitation at the bottom of a reactor, characterized in that: include: A connecting pipe (1) is arranged inside the reactor (2), a sintered mesh (3) is provided at the bottom of the reactor (2), and the upper end of the connecting pipe (1) passes through the top of the reactor (2) and extends upward to be provided with a ventilation interface (4); A backflush member (5) is provided at the lower end of the connecting pipe (1) and is in communication therewith, and the backflush member (5) is located above the sintered mesh (3), and a plurality of vent holes (6) are provided at the bottom of the backflush member (5).

2. The device for preventing sedimentation at the bottom of a reactor according to claim 1, characterized in that: The ventilation interface (4) is externally connected to compressed air.

3. The device for preventing sedimentation at the bottom of a reactor according to claim 1, characterized in that: The number of the connecting pipe (1) is at least one.

4. The device for preventing sedimentation at the bottom of a reactor according to claim 1, characterized in that: The backflush member (5) is in the shape of a circular ring.

5. The device for preventing sedimentation at the bottom of a reaction kettle according to claim 1, characterized in that: The bottom of the back-flushing member (5) has a plurality of vent holes (6) arranged radially and at equal intervals.

6. A device for preventing sedimentation at the bottom of a reactor according to claim 1 or 5, characterized in that: The bottom of the backflush member (5) is provided with 3 to 6 rows of vent holes (6).

7. The device for preventing sedimentation at the bottom of a reaction kettle according to claim 6, characterized in that: The angle formed between the center of the longitudinal section of the backflush member (5) and the two vent holes (6) located at the end is 90-135°.

8. The device for preventing sedimentation at the bottom of a reactor according to claim 1, characterized in that: The connecting pipe (1) and the backflush component (5) are both made of stainless steel.

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