Aeration system for producing a composite material
By using a composition production aeration system during DL-panolactone hydrolysis, using gas flow to drive the propeller for stirring and gas recycling, the problem of low bioenzyme utilization is solved, and efficient hydrolysis reaction is achieved and Cost reduction.
Patent Information
- Application Number
- CN202310788401.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2023-06-30
- Publication Date
- 2024-12-10
- Estimated Expiration
- 2043-06-30
AI Technical Summary
In the prior art, the stirring method of biological enzymes when participating in the decomposition of DL-panolactone leads to low enzyme utilization and high production costs.
A composition production aeration system, including a reactor, an aeration fan and an aeration disc, drive the propeller to stir through the airflow, form a turbulent flow to fully contact the reactants and biological enzymes, and to stabilize the gas recycling and The pressure circuit reduces the ammonia gas usage to avoid enzyme damage and excessive pressure.
It improves the utilization rate of biological enzymes, reduces production costs, ensures hydrolysis efficiency and stability of the reaction environment, avoids enzyme inactivation and excessive pressure in the reactor.
Smart Images
Figure CN117448153B_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the field of aeration equipment, and in particular to an aeration system for composition production. Background Art
[0002] D-Pantothenate calcium, or vitamin B5, is currently synthesized by calcium β-alanine and D-pantolactone. Its main raw material D-pantolactone is usually obtained by hydrolysis (chiral splitting) of DL-pantolactone in production. During the hydrolysis of DL-pantolactone, D-pantolactone enzyme (biological enzyme) is used in the industry for chiral splitting in a weakly alkaline or weakly acidic environment.
[0003] For example, the weak base-assisted splitting method of pantolactone disclosed in application number CN202010405713.1 has a high splitting efficiency, but it uses stirring to fully mix the biological enzyme and the reactants. In large-scale production, due to the large reaction vessel, multiple or large motors are required to drive the stirring paddle for stirring, which is costly.
[0004] In actual production, since biological enzymes are used for the reaction, the enzymes appear in the form of flocs in the reactants. When a stirring paddle is used for stirring, if the stirring force is too strong, the enzymes will be dispersed or even inactivated, and the enzymes cannot be collected again for reuse after the reaction. New biological enzymes need to be added during the reaction, which is costly. If the stirring force is too weak or the stirring time is too short, it will affect the stirring time and stirring effect. Summary of the invention
[0005] The present invention is intended to provide an aeration system for composition production, which is used for the hydrolysis of DL-pantoic acid lactone, specifically to solve the problem of high cost caused by low utilization rate of biological enzymes in the stirring method when biological enzymes participate in the decomposition of DL-pantoic acid lactone in the prior art.
[0006] In order to solve the above-mentioned problem, an aeration system for producing a composition is disclosed. The present invention adopts the following technical scheme: an aeration system for producing a composition, comprising a reactor, wherein the reactor is used for installing the aeration system, and the reactor is respectively provided with an air inlet, an air collecting port, a liquid inlet and a liquid outlet, and the aeration system comprises an aeration fan and an aeration plate, wherein the aeration plate is fixedly arranged in the reactor, and a plurality of aeration pipes are fixedly arranged on the outside of the aeration plate, and the aeration pipes are arranged along the tangent direction of the aeration plate; the air inlet end of the aeration fan is connected to the air through a pipeline, and the output end of the aeration fan is connected to the aeration pipe through a pipeline; a propeller is rotatably arranged in the middle of the aeration plate, and the blade surface of the propeller blade corresponds to the pipe mouth of the aeration pipe.
[0007] The principles and advantages of this solution are as follows: the aeration fan drives the gas from the aeration disk into the reactor. Due to the aeration pipe arrangement on the aeration disk, the gas will be ejected from the tangential direction of the aeration disk, wherein the propeller and the aeration pipe opening are arranged correspondingly, the airflow directly impacts the propeller and then drives the propeller to rotate, and turbulence is formed under the joint action of the airflow and the propeller, which can better enable the reactants and the biological enzyme to fully contact; at the same time, because the stirring paddle is driven by the airflow, the impact force is small, and the enzyme will not be destroyed under the premise of fully mixing the reactants; the propeller can also reduce the impact of the airflow on the enzyme, avoid the enzyme from being dispersed, and ensure the hydrolysis efficiency.
[0008] In actual application, ammonia gas is introduced into the air inlet, which can keep the reaction liquid in a weak alkaline environment and ensure the hydrolysis rate. During the reaction, the gas collecting port facilitates the discharge of undissolved ammonia gas and other gases introduced to prevent excessive pressure in the reactor. Ammonia gas is introduced into the air inlet to fully mix it with the solution in the reactants, so that the reaction environment remains weakly alkaline and the hydrolysis efficiency is ensured.
[0009] As an improvement, the pipeline connected to the air inlet end of the aeration fan is provided with a first one-way valve; a gas circulation pipeline is also provided outside the reactor, one end of the gas circulation pipeline is connected to the gas collecting port, and the other end is connected between the first one-way valve and the aeration fan; the beneficial effect of this improvement is that the gas in the reactor, such as ammonia and air, enters the gas circulation pipeline through the gas collecting port, and then the mixed gas is re-introduced into the reactor under the action of the aeration fan, wherein the recycling of ammonia can reduce the amount of ammonia used and the cost is lower, wherein the setting of the first one-way valve can effectively prevent ammonia from entering the air.
[0010] As an improvement, the gas circulation pipeline also includes a pressure stabilizing circuit, which includes a gas storage tank, the air inlet of the gas storage tank is connected to the side of the gas circulation pipeline where the gas collecting port is located, and the air outlet of the gas storage tank is connected to the side connected to the aeration fan; the beneficial effect of this improvement is that: due to the setting of the first one-way valve, it is not conducive to the discharge of the mixed gas of ammonia and the introduced air, the pressure value in the reactor will gradually increase during the reaction, and the gas storage tank can be used to collect gas when the pressure in the gas circulation pipeline reaches the set value. When the pressure in the gas storage tank reaches the set value, the aeration fan stops working and the aeration gas is provided by the gas storage tank.
[0011] As an improvement, a second one-way valve is further provided on the gas circulation pipeline, and the second one-way valve is located between the air inlet and the air outlet of the gas storage tank and the connection point with the gas circulation pipeline; the beneficial effect of this improvement is that when the aeration fan stops working, the gas provided by the gas storage tank has the problem of entering the reaction gas from the gas collecting port, which makes the mixing efficiency of the reactants low. The setting of the second one-way valve can effectively avoid gas reflux.
[0012] As an improvement, an overflow valve is provided on the side where the air inlet of the gas storage tank is located; the beneficial effect of this improvement is that when the pressure value in the circulation pipeline is low, the overflow valve is normally closed, and when the pressure reaches the opening value of the overflow valve, part of the gas will enter the gas storage tank through the overflow valve for storage, and the overflow valve can play a good role in stabilizing the pressure of the circulation pipeline.
[0013] As an improvement, the propeller includes a hub, blades and a rotating shaft, one end of the rotating shaft is fixedly connected to the middle of the aeration disk, the blades are evenly arranged around the hub, and the hub is rotatably connected to the rotating shaft through a bearing; the beneficial effect of this improvement is that the blades are evenly arranged on the hub, and the blades correspond to the aeration pipe opening, when the airflow goes out from the aeration pipe opening, the blades rotate on the rotating shaft driven by the airflow to form turbulence, and the arrangement of the bearing can facilitate the rotation of the blades.
[0014] As an improvement, a tube is further provided in the reactor; the aeration plate is arranged in the middle of the tube; the beneficial effect of this improvement is that although the airflow has weakened part of the force of the airflow when driving the blades to rotate, when the airflow force is large, it is still possible to impact the biological enzyme and disperse it, and the tube can also weaken the impact force of the airflow to prevent the biological enzyme from being impacted by a large airflow.
[0015] As an improvement, the liquid outlet is provided with a filter screen; the beneficial effect of this improvement is that since the ammonia introduced during the reaction may form bubbles and exist in the bubbles, when the reaction is completed, the bubbles can be removed when passing through the filter screen and a certain screening effect can also be played. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 This is a schematic diagram of the structure of the aeration system for producing the composition of Example 1 of the present invention. DETAILED DESCRIPTION
[0017] The following is further described in detail through specific implementation methods:
[0018] The figure marks in the drawings of the specification include: reactor 10, air inlet 11, air collecting port 12, liquid inlet 13, liquid outlet 14; aeration plate 20, aeration pipe 21, rotating shaft 22, propeller 23, tube 24, aeration fan 25, first one-way valve 30, air storage tank 31, second one-way valve 32, overflow valve 33, filter screen 34.
[0019] The embodiment is basically as shown in the attached Figure 1 As shown:
[0020] The present invention provides an aeration system for producing a composition, which is mainly used for hydrolyzing DL-pantolactone and comprises a reactor 10. In this embodiment, the reactor 10 is provided with an air inlet 11, an air collecting port 12, a liquid inlet 13 and a liquid outlet 14.
[0021] During implementation, the air inlet 11 is used for the introduction of ammonia, and the introduced ammonia can maintain the reaction environment in a weak alkaline state, ensuring that the hydrolysis rate of DL-pantoic acid lactone is not affected; during implementation, the air inlet 11 is opened at the bottom of the reactor 10. When ammonia is introduced, it rises in the reactor 10 and is absorbed by solutions at different liquid level heights, so the absorption efficiency is higher and more ammonia is dissolved.
[0022] During implementation, the gas collecting port 12 is used to collect the introduced ammonia and the air for aeration. In this implementation, the gas collecting port 12 is opened at the top of the reactor 10, and the air and the undissolved ammonia will separate from the reaction solution and reach the top of the reactor 10 to enter the gas collecting port 12; the liquid inlet 13 is opened at the top of the reactor 10, and is used to add the DL-pantoic acid lactone solution participating in the hydrolysis, and the liquid outlet 14 is opened at the bottom of the reactor 10, and is used to discharge the solution after the hydrolysis reaction is completed.
[0023] During implementation, an aeration plate 20 is fixedly provided inside the reactor 10. In this embodiment, the aeration plate 20 is a metal aeration plate 20, which is fixed to the bottom of the reactor 10 by welding, wherein the aeration plate 20 is fixed with a plurality of aeration tubes 21. In this embodiment, there are 6 aeration tubes 21, which are evenly spaced and welded on the outer side of the aeration plate 20 in the tangential direction upward, and can also be fixed by other methods such as bonding. During implementation, a rotating shaft 22 is fixed to the middle of the aeration plate 20, and one end of the rotating shaft 22 is fixed to the middle of the aeration plate 20, which can be fixed by threaded connection or welding. During implementation, a propeller 23 is fixed to the upper end of the rotating shaft 22 through a bearing, wherein the propeller 23 consists of a hub and a blade. During implementation, the pipe mouth of the aeration tube 21 is consistent with the rotation direction of the blade of the propeller 23, and the impact force of the airflow can drive the propeller 23 to rotate on the rotating shaft 22, thereby achieving the purpose of fully contacting the reactants and the biological enzyme.
[0024] During implementation, although part of the force of the gas is used to drive the propeller 23 to rotate, there may still be a part of the airflow with a large force that may impact the biological enzyme. Therefore, a tube 24 is fixed to the outside of the aeration plate 20. The remaining impact force of the airflow is weakened or offset when it impacts the tube 24. At the same time, it can also produce a synergistic effect with the propeller 23, so that the reactants and the biological enzyme are mixed more evenly.
[0025] During implementation, an aeration fan 25 is further provided outside the reactor 10, wherein the air inlet end of the aeration fan 25 is connected to the air, and the air outlet end of the aeration fan 25 is connected to the aeration pipe 21 on the aeration plate 20, wherein the aeration pipe 21 can be connected to the air outlet end by means of multiple joints; a gas circulation pipeline is also connected to the outside of the reactor 10 through a pipeline, wherein one end of the gas circulation pipeline is connected to the gas collecting port 12, and the other end of the three-dimensional circulation pipeline is connected to the air inlet end of the aeration fan 25, so as to facilitate the recycling of the introduced ammonia and air; during implementation, since the circulation pipeline is connected to the air inlet end, there may be ammonia leakage, and connecting the first one-way valve 30 on the air inlet end can prevent the gas from entering the air from the air inlet end.
[0026] During implementation, since ammonia gas is introduced into the reactor 10 and aeration is performed during the reaction, this may cause excessive pressure inside the reactor 10; in this embodiment, the gas circulation pipeline is also connected to a pressure stabilizing circuit, which is composed of a pipeline and a gas storage tank 31; specifically, the side where the air inlet 11 of the gas storage tank 31 is located is connected to the gas circulation pipeline on the side of the gas collecting port 12, and the air outlet of the gas storage tank 31 is connected to the side where the aeration fan 25 is located; when the pressure inside the device is too high, the gas storage tank 31 can absorb gas to balance the pressure. When the pressure inside the gas storage tank 31 reaches the set value, the aeration fan 25 can be turned off and the gas provided by the gas storage tank 31 for aeration.
[0027] During implementation, the gas circulation pipeline is also connected to a second one-way valve 32 at one end connected to the pressure stabilizing circuit. The second one-way valve 32 can prevent the gas from flowing back and entering the reaction vessel from the gas collecting port 12, thereby affecting the mixing efficiency of the reactants; wherein, an overflow valve 33 is also connected to the gas inlet 11 of the gas storage tank 31. When the pressure in the circuit is too high, the overflow valve 33 opens the gas to flow into the gas storage tank 31, thereby preventing the pressure in the entire circuit or the reactor 10 from being too high.
[0028] During implementation, a filter screen 34 is welded at the liquid outlet 14. Since gas is introduced into the reactants, bubbles may appear. The filter screen 34 can remove the gas in the product and intercept the flocculent enzymes.
[0029] The above is only an embodiment of the present invention, and the common knowledge such as the known specific technical solutions and / or characteristics in the solution is not described in detail here. It should be pointed out that for those skilled in the art, without departing from the technical solution of the present invention, several modifications and improvements can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.
Claims
1. An aeration system for producing a composition, comprising a reactor, the reactor being used for installing the aeration system, the reactor being respectively provided with an air inlet, an air collecting port, a liquid inlet and a liquid outlet, the aeration system comprising an aeration fan, Features: The aeration system also includes an aeration plate and an aeration fan. The aeration plate is fixedly arranged in the reactor. A plurality of aeration tubes are fixedly arranged on the outside of the aeration plate, and the aeration tubes are arranged along the tangent direction of the aeration plate. The air inlet end of the aeration fan is connected to the air through a pipeline, and the output end of the aeration fan is connected to the aeration tube through a pipeline. A propeller is rotatably arranged in the middle of the aeration plate, and the blade surface of the propeller blade corresponds to the pipe opening of the aeration tube. A tube is also arranged in the reactor; the aeration plate is arranged in the middle of the tube.
2. The aeration system for producing the composition according to claim 1, Features: The pipeline connected to the air inlet end of the aeration fan is provided with a first one-way valve; a gas circulation pipeline is also provided outside the reactor, one end of the gas circulation pipeline is connected to the gas collecting port, and the other end is connected between the first one-way valve and the aeration fan.
3. The aeration system for producing the composition according to claim 2, Features: The gas circulation pipeline also includes a pressure stabilizing circuit, which includes a gas storage tank. The gas inlet of the gas storage tank is connected to the side where the gas collection port of the gas circulation pipeline is located, and the gas outlet of the gas storage tank is connected to the side where the aeration fan is connected.
4. The aeration system for producing the composition according to claim 3, Features: The gas circulation pipeline is also provided with a second one-way valve, which is located between the gas inlet and gas outlet of the gas storage tank and the connection between the gas circulation pipeline.
5. The aeration system for producing the composition according to claim 4, Features: An overflow valve is arranged on one side of the gas storage tank where the gas inlet is located.
6. The aeration system for producing the composition according to claim 1, Features: The propeller comprises a hub, blades and a rotating shaft. One end of the rotating shaft is fixedly connected to the middle of the aeration disk. The blades are evenly arranged around the hub. The hub is rotatably connected to the rotating shaft through a bearing.
7. The aeration system for producing a composition according to claim 1, Features: The liquid outlet is provided with a filter screen.