Preparation device for chemical surfactant

Abstract

The invention relates to the technical field of preparation of chemical surfactants, in particular to a preparation device for a chemical surfactant. The device comprises a laying module, a pressure detection module, an analysis module and a control module. According to the invention, when the neutralization reaction of the surfactant is carried out, the pressure distribution and change in the reaction kettle are accurately analyzed, and the pressure data monitored by the pressure detection module is analyzed, so that problems are found in time, corresponding measures are taken, and when the pressure distribution is not uniform, the pressure is accurately detected through the plurality of pressure sensors in the reaction kettle. Pressure readings at different positions are obtained in real time, the pressure is compared with a threshold value, when the pressure is small, the interval of the sensors is increased, so that the pressure change in the reaction kettle is monitored more accurately, it is ensured that the pressure change can be found in time, and when the pressure is large, the pressure change can be accurately detected by analyzing reasons, checking the stirring speed and the bubble generation condition and adjusting operation conditions in time. Therefore, uniform pressure distribution in the reaction kettle is ensured, and the reaction safety and efficiency are ensured.

Description

Technical Field

[0001] The invention relates to the technical field of chemical active agent preparation, in particular to a preparation device for chemical surfactant. Background Art

[0002] Chemical surfactants are a class of substances widely used in the chemical industry. They have the characteristics of reducing the surface tension of liquids, enhancing the interaction between liquids, and stabilizing emulsions and foams. There are many methods for preparing chemical surfactants. The general preparation method is through chemical synthesis. By selecting appropriate raw materials and reagents and reacting under appropriate conditions, the desired surfactant can be synthesized. It can also be prepared by biosynthesis, which uses the biosynthetic pathway in organisms to produce surfactants. How to ensure the accuracy of pressure detection during the preparation of chemical surfactants is very important.

[0003] Patent document with publication number CN112326366A discloses a stratified sampling detection device for oilfield surfactant preparation, including a detection box, a lifting plate rotatably connected inside the detection box, the top of the lifting plate rotatably connected to a lifting column, the lifting column passes through the top of the detection box, a lifting drive device is provided on one side of the lifting column at the top of the detection box, a rotating drive device is provided on one side of the bottom of the lifting column, the bottom end of the detection box is fixedly connected to a fixed column, and multiple sampling devices are provided on both sides of the lifting column from top to bottom; it can be seen that the existing chemical surfactant preparation technology lacks a device for real-time monitoring of the surfactant preparation process and automatic control of the pressure in the reactor to save manpower. Summary of the invention

[0004] To this end, the present invention provides a device for preparing a chemical surfactant, so as to overcome the problem of low reaction efficiency due to the lack of accurate monitoring of the pressure distribution in the reactor in the prior art.

[0005] To achieve the above object, the present invention provides a device for preparing a chemical surfactant, comprising:

[0006] A layout module, which divides the monitoring area in the reactor into a plurality of equal grids using a grid to obtain corresponding unit monitoring areas, wherein the side length of the grid includes a preset interval height and a preset interval width;

[0007] A pressure detection module, comprising pressure detection devices respectively arranged in each of the unit monitoring areas, any one of the pressure detection devices being used to collect the real-time pressure of the corresponding unit monitoring area;

[0008] An analysis module is used to obtain the real-time pressures at preset collection intervals for analysis, determine whether the pressure distribution in the reactor is uniform according to the analysis results, and obtain the pressure value to be analyzed when the pressure distribution is uneven, compare the pressure value to be analyzed with the standard pressure, and determine whether to obtain the stirring speed and bubble generation conditions for analysis according to the comparison results;

[0009] The control module is used to adjust the operating state in the reactor or the preset interval height according to the analysis result of the analysis unit.

[0010] Furthermore, the analysis module includes a pressure distribution analysis unit and a pressure magnitude analysis unit, wherein:

[0011] The pressure distribution analysis unit is used to calculate the maximum pressure fluctuation difference in the reactor according to each of the real-time pressures, and determine whether the pressure distribution in the reactor is uniform according to the maximum pressure fluctuation difference in the reactor;

[0012] The pressure magnitude analysis unit is used to obtain the real-time pressure corresponding to the maximum pressure fluctuation difference in the reactor when the pressure distribution in the reactor is uneven, obtain the pressure value to be analyzed, and compare the pressure value to be analyzed with the standard pressure.

[0013] Furthermore, the analysis module also includes a stirring speed analysis unit and a bubble generation analysis unit, wherein:

[0014] The stirring speed analysis unit is used to obtain the position of the pressure detection device corresponding to the pressure value to be analyzed for analysis when the pressure value to be analyzed is determined by the pressure magnitude analysis unit to be greater than the standard pressure, so as to determine whether the control module adjusts the preset stirring speed;

[0015] The bubble generation analysis unit is used to obtain a bubble image taken by a camera arranged on the top of the reactor when the pressure detection device is in the upper area of ​​the reactor, and analyze the bubble image.

[0016] Furthermore, the control module includes a state control unit,

[0017] The state control unit is used to adjust the preset stirring speed to a first corrected stirring speed when the stirring speed analysis unit determines that the pressure detection device is in the middle area of ​​the reactor, and to adjust the preset stirring speed to a second corrected stirring speed when the real-time area ratio is between the first standard area ratio and the second standard area ratio;

[0018] Wherein, when the pressure detection device is in the lower area of ​​the reactor, the state control unit does not adjust the operating state in the reactor.

[0019] Furthermore, the bubble generation analysis unit includes a second calculation subunit and a second determination subunit, wherein:

[0020] The second calculation subunit obtains the percentage of the bubble area in the bubble image to the unit monitoring area corresponding to the pressure detection device, and obtains the real-time area ratio;

[0021] The second determination subunit determines the real-time area ratio according to the first standard area ratio and the second standard area ratio, and determines whether the control module adjusts the operating state in the reactor according to the determination result.

[0022] Furthermore, the control module also includes an exhaust control unit,

[0023] The exhaust control unit is used to increase the preset valve opening to a corrected valve opening when the real-time area ratio is greater than the second standard area ratio;

[0024] Wherein, when the real-time area ratio is less than the first standard area ratio, the state control unit does not adjust the operating state in the reactor.

[0025] Furthermore, the pressure distribution analysis unit includes a first calculation subunit, a first comparison subunit and a first determination subunit, wherein:

[0026] The first calculation subunit is used to calculate the maximum pressure fluctuation difference in the kettle;

[0027] The first comparison subunit is used to compare the standard pressure fluctuation difference in the kettle with the maximum pressure fluctuation difference in the kettle;

[0028] The first determination subunit is used to determine that the pressure distribution in the reactor is uneven when the maximum pressure fluctuation difference in the reactor is greater than the standard pressure fluctuation difference in the reactor.

[0029] Furthermore, the device also includes:

[0030] A feed port, which is arranged at the top of the reactor and is used to introduce reactants into the reactor;

[0031] An exhaust port is provided on the side of the reactor to discharge foam, gas or volatile substances generated during the reaction;

[0032] A stirring unit, used to mix the reactants;

[0033] A heating unit is used to provide the required reaction temperature.

[0034] Furthermore, the control module also includes a deployment control unit,

[0035] The arrangement control unit adjusts the preset interval height to a corrected interval height when the pressure value to be analyzed is less than the standard pressure.

[0036] Furthermore, the first calculation subunit obtains the real-time pressure of each unit monitoring area, adds up the real-time pressures and divides them by the number of unit monitoring areas to obtain the average pressure, subtracts the average pressure from each real-time pressure to obtain a number of real-time pressure fluctuation differences, takes the absolute value of each real-time pressure fluctuation difference, obtains the value with the largest absolute value, and obtains the maximum pressure fluctuation difference in the kettle.

[0037] Compared with the prior art, the beneficial effect of the present invention lies in that, by accurately analyzing the pressure distribution and changes in the reactor during the neutralization reaction of sodium dodecyl sulfate, and analyzing the pressure data monitored by the pressure detection module, problems can be discovered in time and corresponding measures can be taken. If the pressure is uneven, by comparing the pressure sizes, when the pressure is small, the density and spacing of the sensors are increased to more accurately monitor the pressure changes in the reactor to ensure that the pressure changes can be discovered in time. When the pressure is high, by analyzing the causes, checking the stirring speed and bubble generation, the operating conditions are adjusted in time to ensure that the pressure distribution in the reactor is uniform, thereby ensuring the safety and efficiency of the reaction.

[0038] Furthermore, by monitoring the pressure distribution in the reactor, when the pressure distribution is uneven, the pressure readings at different positions are obtained in real time through several pressure sensors in the reactor, and the pressure is compared with the threshold. If the pressure is greater than the threshold, the position of the corresponding pressure detection device is analyzed. If the position is in the upper area of ​​the reactor, it means that the bubbles are generated too quickly and cannot be discharged in time, or the water vapor release causes the instantaneous pressure to rise. Then, by obtaining the bubble image, the area ratio of the bubble distribution area falling near the pressure detection device is obtained according to the image. Since the appearance of bubbles will cause the pressure in the local area to increase, that is, the pressure detected in the corresponding unit monitoring area is greater than the threshold. Therefore, by analyzing whether the pressure detected by the pressure detection device is caused by a large number of bubbles and water vapor or a small number of bubbles, the operating state in the reactor is accurately controlled. If it is determined that the real-time area ratio is greater than the second standard area ratio, it means that the local pressure is large due to the large amount of bubbles, and the valve opening is increased to discharge in time. If it is determined that the real-time area ratio is between the first standard area ratio and the second standard area ratio, it means that the bubble generation is small, and the preset stirring speed is reduced to reduce turbulence and bubble generation, avoid unnecessary pressure fluctuations, and ensure the safety and efficiency of the reaction.

[0039] Furthermore, by analyzing the position of the detection equipment with large pressure value fluctuations, if the pressure detection equipment is in the lower area of ​​the reactor, the pressure at the bottom will increase due to the influence of liquid gravity. Therefore, it is normal for the maximum pressure fluctuation difference detected in the reactor to be at the bottom of the reactor, and there is no need to adjust the operating state of the reactor. If the pressure detection equipment is in the middle area of ​​the reactor, since the middle area is the area near the liquid surface, in the middle area, if there is obvious uneven liquid flow and turbulence, different pressure readings will be generated at different positions, that is, the maximum pressure fluctuation difference in the reactor will appear, indicating that the stirring speed is too fast, resulting in uneven liquid flow. Therefore, the preset stirring speed is reduced in time to ensure the smooth progress of the reaction, improve efficiency and ensure the safety performance of the reactor. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 This is a schematic structural diagram of a device for preparing a chemical surfactant according to an embodiment of the present invention;

[0041] Figure 2 This is a connection diagram of an analysis module according to an embodiment of the present invention;

[0042] Figure 3 This is a connection diagram of a control module according to an embodiment of the present invention;

[0043] Figure 4 Schematic diagram of the connection of the pressure distribution analysis unit according to an embodiment of the present invention. DETAILED DESCRIPTION

[0044] In order to make the objects and advantages of the present invention more clearly understood, the present invention is further described below in conjunction with embodiments; it should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0045] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the protection scope of the present invention.

[0046] It should be noted that, in the description of the present invention, terms such as "up", "down", "left", "right", "inside" and "outside" indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings. This is merely for the convenience of description and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present invention.

[0047] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0048] See also Figure 1 As shown, it is a schematic diagram of the structure of a preparation device for a chemical surfactant according to an embodiment of the present invention. The present invention provides a preparation device for a chemical surfactant, including: 1-feeding port, 2-exhaust port, 3-stirring unit, 4-heating unit, 5-pressure detection equipment, 6-camera;

[0049] A feed port 1 is provided at the top of the reactor and is used to introduce reactants into the reactor;

[0050] An exhaust port 2 is provided on the side of the reactor to discharge foam, gas or volatile substances generated during the reaction;

[0051] A stirring unit 3, used to mix the reactants;

[0052] A heating unit 4 is used to provide the required reaction temperature;

[0053] A layout module, which divides the monitoring area in the reactor into a plurality of equal grids using a grid to obtain corresponding unit monitoring areas, wherein the side length of the grid includes a preset interval height and a preset interval width;

[0054] A pressure detection module, comprising pressure detection devices 5 respectively arranged in each of the unit monitoring areas, any one of the pressure detection devices is used to collect the real-time pressure of the corresponding unit monitoring area;

[0055] An analysis module is used to obtain the real-time pressures at preset collection intervals for analysis, determine whether the pressure distribution in the reactor is uniform according to the analysis results, and obtain the pressure value to be analyzed when the pressure distribution is uneven, compare the pressure value to be analyzed with the standard pressure, and determine whether to obtain the stirring speed and bubble generation conditions for analysis according to the comparison results;

[0056] The control module is used to adjust the operating state in the reactor or the preset interval height according to the analysis result of the analysis unit.

[0057] In this embodiment, based on the preparation device in this embodiment, a preparation method of chemical surfactant sodium dodecyl sulfate is provided, comprising:

[0058] Step S1, adding 200 g of dodecanol and 50 mL of 98% concentrated sulfuric acid into a reaction kettle for mixing to carry out an esterification reaction, the temperature provided by the heating unit is 150° C.-180° C., and the reaction time is 2 hours;

[0059] Step S2, dissolving the generated dodecyl sulfate in 500 mL of water to form an emulsion;

[0060] Step S3, gradually adding 80 g of sodium hydroxide solution into the reaction kettle, controlling the pH value within the range of 7-8, to carry out a neutralization reaction;

[0061] Step S5, monitoring the neutralization reaction in real time, analyzing whether the pressure distribution in the reactor is uniform according to the pressure data monitored in real time by the pressure detection module, and analyzing the stirring speed and bubble generation when the pressure distribution is uneven, so as to perform corresponding regulation;

[0062] Step S4, cooling the reaction mixture, waiting for precipitation, filtering, concentrating and drying the filtrate to obtain solid sodium dodecyl sulfate.

[0063] By accurately analyzing the pressure distribution and changes in the reactor during the neutralization reaction of sodium dodecyl sulfate, and analyzing the pressure data monitored by the pressure detection module, problems can be discovered in time and corresponding measures can be taken. If the pressure is uneven, by comparing the pressure sizes, when the pressure is small, the density and spacing of the sensors can be increased to more accurately monitor the pressure changes in the reactor to ensure that pressure changes can be discovered in time. When the pressure is high, by analyzing the causes, checking the stirring speed and bubble generation, the operating conditions can be adjusted in time to ensure uniform pressure distribution in the reactor and ensure the safety and efficiency of the reaction.

[0064] See also Figure 2 As shown, it is a connection diagram of the analysis module according to an embodiment of the present invention;

[0065] Specifically, the analysis module includes a pressure distribution analysis unit and a pressure magnitude analysis unit, wherein:

[0066] The pressure distribution analysis unit is used to calculate the maximum pressure fluctuation difference in the reactor according to each of the real-time pressures, and determine whether the pressure distribution in the reactor is uniform according to the maximum pressure fluctuation difference in the reactor;

[0067] The pressure magnitude analysis unit is used to obtain the real-time pressure corresponding to the maximum pressure fluctuation difference in the reactor when the pressure distribution in the reactor is uneven, obtain the pressure value to be analyzed, and compare the pressure value to be analyzed with the standard pressure.

[0068] The standard pressure in this embodiment is 80% of the maximum working pressure of the reactor, which is generally set to 8 bar. When the pressure approaches the maximum working pressure, the safety measures are triggered in advance to ensure that the reactor operates within a safe range.

[0069] The preset stirring speed can be set to 300-600 rpm. In the early stage of the reaction, a higher stirring speed is set to ensure that the reactants are fully mixed. In the later stage of the reaction, the stirring speed is reduced to reduce bubble generation.

[0070] The preset interval height is 10 cm, and it can be adjusted according to the size of the reactor and the accuracy required for monitoring;

[0071] Specifically, the analysis module also includes a stirring speed analysis unit and a bubble generation analysis unit, wherein:

[0072] The stirring speed analysis unit is used to obtain the position of the pressure detection device corresponding to the pressure value to be analyzed for analysis when the pressure value to be analyzed is greater than the standard pressure, so as to determine whether to adjust the preset stirring speed;

[0073] The bubble generation analysis unit is used to obtain a bubble image taken by a camera arranged on the top of the reactor when the pressure detection device is in the upper area of ​​the reactor, and analyze the bubble image.

[0074] By monitoring the pressure distribution in the reactor, when the pressure distribution is uneven, the pressure readings at different positions are obtained in real time through several pressure sensors in the reactor, and the pressure is compared with the threshold. If the pressure is greater than the threshold, the position of the corresponding pressure detection device is analyzed. If the position is in the upper area of ​​the reactor, it means that the bubbles are generated too quickly and cannot be discharged in time, or the water vapor release causes the instantaneous pressure to rise. Then, by obtaining the bubble image, the area ratio of the bubble distribution area falling near the pressure detection device is obtained according to the image. Since the appearance of bubbles will cause the pressure in the local area to increase, that is, the pressure detected in the corresponding unit monitoring area is greater than the threshold. Therefore, by analyzing whether the pressure detected by the pressure detection device is caused by a large number of bubbles and water vapor or a small number of bubbles, the operating state in the reactor is accurately controlled. If it is determined that the real-time area ratio is greater than the second standard area ratio, it means that the local pressure is large due to the large amount of bubbles, and the valve opening is increased to discharge in time. If it is determined that the real-time area ratio is between the first standard area ratio and the second standard area ratio, it means that the bubble generation is small, and the preset stirring speed is reduced to reduce turbulence and bubble generation, avoid unnecessary pressure fluctuations, and ensure the safety and efficiency of the reaction.

[0075] See also Figure 3 As shown, it is a connection diagram of the control module according to an embodiment of the present invention;

[0076] Specifically, the control module includes a state control unit,

[0077] The state control unit is used to adjust the preset stirring speed to a first corrected stirring speed when the stirring speed analysis unit determines that the pressure detection device is in the middle area of ​​the reactor, and to adjust the preset stirring speed to a second corrected stirring speed when the real-time area ratio is between the first standard area ratio and the second standard area ratio;

[0078] Wherein, Vc1'=max{Vc×0.95,Vmin}Vc1' is the first corrected stirring speed, and Vc is the preset stirring speed;

[0079] Vc2'=max{Vc×[1-(Qs-Qb1) / Qs], Vmin}, Vc2' is the second corrected stirring speed, Qs is the real-time area ratio, Qb1 is the first standard area ratio, Qb2 is the second standard area ratio, and Vmin is the minimum rotation speed;

[0080] Wherein, when the pressure detection device is in the lower area of ​​the reactor, the state control unit does not adjust the operating state in the reactor.

[0081] By analyzing the position of the detection equipment with large pressure value fluctuations, if the pressure detection equipment is in the lower area of ​​the reactor, the pressure at the bottom will increase due to the influence of liquid gravity. Therefore, it is normal for the maximum pressure fluctuation difference in the reactor to be detected at the bottom of the reactor, and there is no need to adjust the operating state of the reactor. If the pressure detection equipment is in the middle area of ​​the reactor, since the middle area is the area near the liquid surface, in the middle area, if there is obvious uneven liquid flow and turbulence, different pressure readings will be generated at different positions, that is, the maximum pressure fluctuation difference in the reactor will appear, indicating that the stirring speed is too fast, resulting in uneven liquid flow. Therefore, the preset stirring speed should be reduced in time to ensure the smooth progress of the reaction, improve efficiency and ensure the safety performance of the reactor.

[0082] Specifically, the bubble generation analysis unit includes a second calculation subunit and a second determination subunit, wherein:

[0083] The second calculation subunit obtains the percentage of the bubble area in the bubble image to the unit monitoring area corresponding to the pressure detection device, and obtains the real-time area ratio;

[0084] The second determination subunit determines the real-time area ratio according to the first standard area ratio and the second standard area ratio, and determines whether the control module adjusts the operating state in the reactor according to the determination result.

[0085] Specifically, the control module also includes an exhaust control unit and a layout control unit.

[0086] The exhaust control unit is used to increase the preset valve opening to a corrected valve opening when the real-time area ratio is greater than the second standard area ratio;

[0087] Wherein, when the real-time area ratio is less than the first standard area ratio, the state control unit does not adjust the operating state in the reactor;

[0088] The arrangement control unit adjusts the preset interval height to a corrected interval height when the pressure value to be analyzed is less than the standard pressure;

[0089] Wherein, Kc'=Kc×[1+(Qs-Qb2) / Qs]], Kc' is the corrected valve opening, Kc is the preset valve opening, Qs is the real-time area ratio, and Qb2 is the second standard area ratio;

[0090] Hc'=Hc×[1-(Pb-Ps) / Pb], Hc' is the corrected interval height, Pb is the standard pressure, and Ps is the pressure value to be analyzed;

[0091] In this embodiment, the first standard area ratio is 5%, and the second standard area ratio is set to 80%. The standard area ratio indicates the number of bubbles in the unit monitoring area where the corresponding pressure detection equipment is located, and represents the number of bubbles generated. If the real-time area ratio is greater than the second standard area ratio, it means that there are many bubbles, and the discharge mechanism is controlled to discharge the bubbles in time. If the real-time area ratio is less than the first standard area ratio, it means that there are almost no bubbles. At this time, the bubbles are discharged in time. If the real-time area ratio is within the range of the first standard area ratio and the second standard area ratio, it means that there are many bubbles generated. The generation of bubbles is reduced by reducing the stirring rate. The pressure distribution in the reactor is monitored in real time and combined with bubble image analysis to accurately judge the impact of bubble generation on local pressure. By effectively managing the generation and discharge of bubbles, the reaction process can be optimized and the occurrence of abnormal situations can be reduced.

[0092] See also Figure 4 As shown, it is a connection diagram of the pressure distribution analysis unit according to an embodiment of the present invention;

[0093] Specifically, the pressure distribution analysis unit includes a first calculation subunit, a first comparison subunit and a first determination subunit, wherein:

[0094] The first calculation subunit is used to calculate the maximum pressure fluctuation difference in the kettle;

[0095] The first calculation subunit obtains the real-time pressure of each unit monitoring area, adds up the real-time pressures and divides them by the number of unit monitoring areas to obtain an average pressure, subtracts the average pressure from each real-time pressure to obtain a number of real-time pressure fluctuation differences, takes the absolute value of each real-time pressure fluctuation difference, obtains the value with the largest absolute value, and obtains the maximum pressure fluctuation difference in the kettle;

[0096] The first comparison subunit is used to compare the standard pressure fluctuation difference in the kettle with the maximum pressure fluctuation difference in the kettle;

[0097] The first determination subunit is used to determine that the pressure distribution in the reactor is uneven when the maximum pressure fluctuation difference in the reactor is greater than the standard pressure fluctuation difference in the reactor.

[0098] In this embodiment, the standard pressure fluctuation difference in the kettle represents the error value between the allowable standard pressure and the actually detected pressure. When the actual pressure fluctuation difference is smaller than the standard pressure fluctuation difference in the kettle, it indicates that the pressure in the kettle is uniform. The standard pressure fluctuation difference in the kettle is generally set to between 3% and 5% of the standard pressure, and is adjusted according to the actual reaction requirements.

[0099] So far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

[0100] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A preparation device for chemical surfactants, characterized in that: include, A layout module, which divides the monitoring area in the reactor into a plurality of equal grids using a grid to obtain corresponding unit monitoring areas, wherein the side length of the grid includes a preset interval height and a preset interval width; A pressure detection module, comprising pressure detection devices respectively arranged in each of the unit monitoring areas, any one of the pressure detection devices being used to collect the real-time pressure of the corresponding unit monitoring area; An analysis module is used to obtain the real-time pressures at preset collection intervals for analysis, determine whether the pressure distribution in the reactor is uniform according to the analysis results, and obtain the pressure value to be analyzed when the pressure distribution is uneven, compare the pressure value to be analyzed with the standard pressure, and determine whether to obtain the stirring speed and bubble generation conditions for analysis according to the comparison results; The control module is used to adjust the operating state in the reactor or the preset interval height according to the analysis result of the analysis unit.

2. The preparation device for chemical surfactant according to claim 1, characterized in that: The analysis module includes a pressure distribution analysis unit and a pressure magnitude analysis unit, wherein: The pressure distribution analysis unit is used to calculate the maximum pressure fluctuation difference in the reactor according to each of the real-time pressures, and determine whether the pressure distribution in the reactor is uniform according to the maximum pressure fluctuation difference in the reactor; The pressure magnitude analysis unit is used to obtain the real-time pressure corresponding to the maximum pressure fluctuation difference in the reactor when the pressure distribution in the reactor is uneven, obtain the pressure value to be analyzed, and compare the pressure value to be analyzed with the standard pressure.

3. The preparation device for chemical surfactant according to claim 2, characterized in that: The analysis module also includes a stirring speed analysis unit and a bubble generation analysis unit, wherein: The stirring speed analysis unit is used to obtain the position of the pressure detection device corresponding to the pressure value to be analyzed for analysis when the pressure value to be analyzed is determined by the pressure magnitude analysis unit to be greater than the standard pressure, so as to determine whether the control module adjusts the preset stirring speed; The bubble generation analysis unit is used to obtain a bubble image taken by a camera arranged on the top of the reactor when the pressure detection device is in the upper area of ​​the reactor, and analyze the bubble image.

4. The preparation device for chemical surfactant according to claim 3, characterized in that: The control module includes a state control unit, The state control unit is used to adjust the preset stirring speed to a first corrected stirring speed when the stirring speed analysis unit determines that the pressure detection device is in the middle area of ​​the reactor, and to adjust the preset stirring speed to a second corrected stirring speed when the real-time area ratio is between the first standard area ratio and the second standard area ratio; Wherein, when the pressure detection device is in the lower area of ​​the reactor, the state control unit does not adjust the operating state in the reactor.

5. The preparation device for chemical surfactant according to claim 3, characterized in that: The bubble generation analysis unit includes a second calculation subunit and a second determination subunit, wherein: The second calculation subunit obtains the percentage of the bubble area in the bubble image to the unit monitoring area corresponding to the pressure detection device, and obtains the real-time area ratio; The second determination subunit determines the real-time area ratio according to the first standard area ratio and the second standard area ratio, and determines whether the control module adjusts the operating state in the reactor according to the determination result.

6. The preparation device for chemical surfactant according to claim 5, characterized in that: The control module further includes an exhaust control unit, The exhaust control unit is used to increase the preset valve opening to a corrected valve opening when the real-time area ratio is greater than the second standard area ratio; Wherein, when the real-time area ratio is less than the first standard area ratio, the state control unit does not adjust the operating state in the reactor.

7. The preparation device for chemical surfactant according to claim 2, characterized in that: The pressure distribution analysis unit includes a first calculation subunit, a first comparison subunit and a first determination subunit, wherein: The first calculation subunit is used to calculate the maximum pressure fluctuation difference in the kettle; The first comparison subunit is used to compare the standard pressure fluctuation difference in the kettle with the maximum pressure fluctuation difference in the kettle; The first determination subunit is used to determine that the pressure distribution in the reactor is uneven when the maximum pressure fluctuation difference in the reactor is greater than the standard pressure fluctuation difference in the reactor.

8. The device for preparing chemical surfactant according to claim 1, characterized in that: The device also includes, A feed port, which is arranged at the top of the reactor and is used to introduce reactants into the reactor; An exhaust port is provided on the side of the reactor to discharge foam, gas or volatile substances generated during the reaction; A stirring unit, used to mix the reactants; A heating unit is used to provide the required reaction temperature.

9. The device for preparing chemical surfactant according to claim 1, characterized in that: The control module also includes a layout control unit, The arrangement control unit adjusts the preset interval height to a corrected interval height when the pressure value to be analyzed is less than the standard pressure.

10. The device for preparing chemical surfactant according to claim 2, characterized in that: The first calculation subunit obtains the real-time pressure of each unit monitoring area, adds up the real-time pressures and divides them by the number of unit monitoring areas to obtain the average pressure, subtracts the average pressure from each real-time pressure to obtain a number of real-time pressure fluctuation differences, takes the absolute value of each real-time pressure fluctuation difference, obtains the value with the largest absolute value, and obtains the maximum pressure fluctuation difference in the kettle.

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