Material dissolution reaction monitoring method, monitoring device and material dissolution reaction system

Abstract

The present application belongs to the technical field of industrial control, and discloses a material dissolving reaction monitoring method, a monitoring device and a material dissolving reaction system. The material dissolving reaction monitoring method comprises the following steps: based on a reaction equation, calculating a first gas mass of a gas generated in a dissolving reaction according to the mass of all materials; making the environment in a dissolving tank reach a target environment; in the dissolving reaction, when a preset condition is met, making the vacuum degree in the dissolving tank and the vacuum degree in the dissolving tank before the dissolving reaction be the same, calculating the difference between a first mass before the dissolving reaction and a second mass in the dissolving reaction to obtain a second gas mass, the first mass and the second mass being the sum of the mass of the dissolving tank, a first reaction material and a second reaction material, when the difference between the first gas mass and the second gas mass is less than or equal to a preset threshold, determining that the dissolving reaction is completed, otherwise, determining that the dissolving reaction is not completed. The present application can effectively determine whether the dissolving reaction is completed.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of industrial control, and particularly relates to a material dissolution reaction monitoring method, a monitoring device and a material dissolution reaction system. BACKGROUND

[0002] In chemical reaction and material dissolution process, real-time detection of reaction progress and judgment of whether the reaction is complete is a key problem. If the reaction progress cannot be known in time, the production plan arrangement will not be accurate. Moreover, if the gas generated by the dissolution reaction cannot be discharged in time, the pressure in the dissolution tank will rise, and there is a risk of leaking gas by breaking the sealing structure, which threatens the safety of personnel and equipment.

[0003] At present, whether the dissolution reaction is complete can only be judged by experience or intermittent sampling, which is time-consuming and not accurate enough. The real-time performance and automation degree need to be improved, and it is difficult to meet the needs of efficient and accurate control of the reaction process in industrial production. SUMMARY

[0004] The purpose of the present application is to provide a material dissolution reaction monitoring method, a monitoring device and a material dissolution reaction system, which can effectively judge whether the dissolution reaction is complete, ensure the safety of equipment, and meet the needs of efficient and accurate control of the reaction process in industrial production.

[0005] The present application discloses a material dissolution reaction monitoring method, comprising:

[0006] Based on the reaction equation, the first gas mass generated by the dissolution reaction is calculated according to the mass of all materials;

[0007] The environment in the dissolution tank is brought to the target environment;

[0008] In the dissolution reaction, when the preset condition is met, the vacuum degree in the dissolution tank is the same as the vacuum degree in the dissolution tank before the dissolution reaction, the difference between the first mass before the dissolution reaction and the second mass in the dissolution reaction is calculated to obtain the second gas mass, the first mass and the second mass are the sum of the masses of the dissolution tank, the first reaction material and the second reaction material, when the difference between the first gas mass and the second gas mass is less than or equal to the preset threshold, it is determined that the dissolution reaction is complete, otherwise, it is determined that the dissolution reaction is not complete.

[0009] In some embodiments, the material includes a first reaction material and a second reaction material, and after the environment in the dissolution tank is brought to the target environment, the method further comprises:

[0010] The first reaction material is put into a dissolving tank, the second reaction material is put into a feeding tank installed on the dissolving tank and in pipeline communication with the dissolving tank, the dissolving tank is vacuumized, the vacuum degree in the dissolving tank reaches a first preset value, the dissolving tank is weighed to obtain the first mass, the second reaction material is put into the dissolving tank from the feeding tank, and the dissolving reaction is started;

[0011] The vacuum degree in the dissolving tank and the vacuum degree in the dissolving tank before the dissolving reaction are the same, the difference between the first mass before the dissolving reaction and the second mass in the dissolving reaction is calculated to obtain the second gas mass, which comprises:

[0012] The dissolving tank is vacuumized, the vacuum degree in the dissolving tank reaches the first preset value, and the dissolving tank is weighed to obtain the second mass, the difference between the first mass and the second mass is calculated to obtain the second gas mass.

[0013] In some embodiments, in the dissolving reaction, the vacuum degree in the dissolving tank is detected to obtain a measured value, and when the measured value is less than or equal to a second preset value, it is determined that the preset condition is met.

[0014] In some embodiments, the environment in the dissolving tank is made to reach a target environment, which comprises:

[0015] The dissolving tank is vacuumized, and the water and air in the dissolving tank are replaced with inert gas.

[0016] The second aspect of the present application discloses a material dissolving reaction monitoring device, comprising a memory storing executable program codes and a processor coupled with the memory; the processor calls the executable program codes stored in the memory to execute any of the above-mentioned material dissolving reaction monitoring methods.

[0017] The third aspect of the present application discloses a material dissolving reaction system, comprising a vacuum pump, a dissolving tank, a weighing sensor and a control device, the vacuum pump is connected with the dissolving tank in pipeline, the control device is electrically connected with the vacuum pump and the weighing sensor, the vacuum pump is used to vacuumize the dissolving tank, the dissolving tank is used to carry out material dissolving reaction, the weighing sensor is used to weigh the dissolving tank, and the control device executes any of the above-mentioned material dissolving reaction monitoring methods.

[0018] In some embodiments, a vacuum degree sensor is further included, which is used to detect the vacuum degree in the dissolving tank during the dissolving reaction to obtain a measured value, and transmit the measured value to the control device.

[0019] In some embodiments, the dissolving tank has a stirring shaft, and a motor and a first gear connected with the motor in transmission are further provided, and the first gear and the stirring shaft are connected through a first magnetic coupler.

[0020] In some embodiments, the dissolving tank further comprises a plurality of bubble-removing spirals, and a second gear connected with a motor, and the second gear and the bubble-removing spirals are connected through a second magnetic coupler.

[0021] In some embodiments, the first end of the bubble-removing spiral has a larger radial dimension than the second end of the bubble-removing spiral, the first end is adjacent to the bottom of the dissolving tank, and the second end is adjacent to the top of the dissolving tank.

[0022] The present application has the beneficial effect that in the dissolving reaction, when the preset condition is met, the detection is carried out, by making the vacuum degree in the dissolving tank during the detection and the vacuum degree in the dissolving tank before the dissolving reaction the same, the second gas mass of the generated gas can be represented by the difference between the first mass before the dissolving reaction and the second mass in the dissolving reaction, and then compared with the first gas mass of the theoretical generated gas, so that whether the dissolving reaction is completed can be effectively determined, and the automatic control is realized. BRIEF DESCRIPTION OF DRAWINGS

[0023] The drawings herein show the specific examples of the technical solutions of the present application, and constitute a part of the specification together with the specific embodiments, for explaining the technical solutions, principles and effects of the present application.

[0024] Unless specifically stated or defined otherwise, the same reference signs in different drawings represent the same or similar technical features, and different reference signs can also be used to represent the same or similar technical features.

[0025] Figure 1 is a flow chart of a material dissolving reaction monitoring method disclosed by the embodiments of the present application;

[0026] Figure 2 is a schematic diagram of a material dissolving reaction system disclosed by the embodiments of the present application;

[0027] Figure 3 is Figure 2 is a longitudinal sectional view of the dissolving tank in the embodiments.

[0028] Marking of the drawings:

[0029] 10, dissolving tank, 101, tank body, 102, cover body, 103, liquid inlet, 104, stirring shaft, 105, bubble removing screw, 11, feeding tank, 12, control device, 13, first electric ball valve, 14, first communication pipe, 15, sending bin, 16, first pneumatic ball valve, 17, first gas cylinder, 18, first pneumatic diaphragm valve, 19, liquid inlet pipe, 20, second pneumatic ball valve, 21, gas inlet, 22, gas inlet pipe, 23, second gas cylinder, 24, second pneumatic diaphragm valve, 25, gas outlet, 26, gas outlet pipe, 27, vacuum pump, 28, third pneumatic diaphragm valve, 29, detection pipe, 30, three-way valve, 31, detector, 32, tail gas pipe, 33, tail gas treatment pipe, 34, weighing sensor, 35, vacuum degree sensor, 36, motor, 37, first gear, 38, first magnetic coupler, 39, second gear, 40, second magnetic coupler, 41, second communication pipe. DETAILED DESCRIPTION

[0030] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. In the case of a conflict between the present description and the technical and scientific terms as understood by those skilled in the art, the present description will control. The articles 'a', 'an', and 'the' each followed by 'first','second', etc., refer to 'one or more' of the relevant items. The use of 'and / or' includes any and all combinations of one or more relevant items.

[0031] It should be noted that when an element is considered to be "fixed to" another element, it can be directly fixed to the other element or a middle element can exist; when an element is considered to be "connected to" another element, it can be directly connected to the other element or a middle element can exist; when an element is considered to be "mounted on" another element, it can be directly mounted on the other element or a middle element can exist. When an element is considered to be "provided on" another element, it can be directly provided on the other element or a middle element can exist.

[0032] Unless specifically stated or otherwise as can be apparent from context, "the", "that" and "it" used herein refer to the subject of the immediately preceding reference, whether pronoun or noun. Also, the use of "comprise", "comprises", "comprising", "contain", "contains", "containing", "include", "includes", "including" and any change of form thereof herein is taken as a disclosure of a possible non-exclusive inclusion such that for an element to be considered disclosed herein it suffices that it is stated herein in any form that it is included. For example a process, method, system, product or apparatus that comprises a list of steps or elements is not necessarily limited to only those steps or elements but can include other steps or elements not expressly listed or inherent to such process, method, system, product or apparatus.

[0033] In order to effectively monitor the material dissolution reaction and determine whether the dissolution reaction is completed, the present application provides a material dissolution reaction monitoring method. The method monitors the progress of the dissolution reaction by detecting the vacuum degree in real time, discharging the gas generated by the reaction, maintaining the same vacuum degree before and after the gas is discharged, calculating the mass of the discharged gas by using the mass measured by the weighing sensor, and realizing the monitoring of the dissolution reaction progress. Not only the accuracy and real-time performance of the dissolution reaction detection are improved, but also the automatic control is realized, the manual intervention is reduced, and the production efficiency and safety are improved. The vacuum degree of the container refers to the degree to which the gas pressure in the container is lower than the atmospheric pressure, which is the difference between the absolute pressure in the container and the atmospheric pressure. If the atmospheric pressure is 100 KPa and the absolute pressure in the container is 10 KPa, the pressure difference is -90 KPa, and the vacuum degree is 90 KPa.

[0034] As shown in Figure 1 , the specific steps include:

[0035] Step S100: calculating a first gas mass of the gas generated by the dissolution reaction according to the mass of all materials based on a reaction equation;

[0036] The reaction equation refers to the chemical reaction equation on which the material dissolution reaction is based. Different materials correspond to different reaction equations. The theoretical gas mass can be calculated through the quantitative relationship of the chemical reaction equation. Specifically: the amount-of-substance ratio of reactants and products (i.e. the equation coefficient ratio) is determined by using the quantitative conservation relationship of chemical reactions, based on the balanced reaction equation, to ensure the conservation of the number of atoms of each element; then the amount of substance is converted from the mass or concentration, volume, etc. of all materials by using the molar mass or amount-of-substance concentration formula, and the limiting reactant (i.e. the material that determines the theoretical yield of gas) is determined; finally, the amount-of-substance of the limiting reactant and the coefficient ratio of the gas product in the equation are used to calculate the amount-of-substance of the gas, and the first gas mass is obtained.

[0037] Step S200: achieving a target environment in the dissolution tank;

[0038] The target environment refers to an internal environment formed by air, water and the like in the dissolving tank, which does not affect the dissolving reaction and the quality of the generated gas in the dissolving tank. The environment in the dissolving tank can be made to reach the target environment by air extraction.

[0039] Step S300: When the preset condition is met in the dissolving reaction, the vacuum degree in the dissolving tank and the vacuum degree in the dissolving tank before the dissolving reaction are the same, the difference between the first mass before the dissolving reaction and the second mass in the dissolving reaction is calculated, and the second gas mass is obtained, wherein the first mass and the second mass are the sum of the masses of the dissolving tank, the first reaction material and the second reaction material. When the difference between the first gas mass and the second gas mass is less than or equal to the preset threshold, it is determined that the dissolving reaction is completed, otherwise, it is determined that the dissolving reaction is not completed.

[0040] Before the dissolving reaction, the dissolving tank, the first reaction material and the second reaction material are weighed, and the sum of the masses of the dissolving tank, the first reaction material and the second reaction material is calculated to obtain the first mass.

[0041] In the process of the dissolving reaction, when the preset condition is met, the dissolving reaction in the dissolving tank is detected, and whether the dissolving reaction is completed is determined according to the detection result. The preset condition can be time limit, for example: the time interval between the current time and the last detection time reaches 1 minute, or state limit, for example: the vacuum degree in the dissolving tank reaches a certain value; or the combination of the vacuum degree and the time interval forms the preset condition; or the change rate of the vacuum degree (such as the vacuum degree changes very small in a period of time). The specific process of obtaining the detection result is as follows: first, the vacuum degree in the dissolving tank at the time of detection is made the same as the vacuum degree in the dissolving tank before the dissolving reaction, then the dissolving tank is weighed to obtain the sum of the masses of the dissolving tank, the first reaction material in the dissolving tank and the second reaction material in the dissolving tank at the time of detection, that is, the second mass, the difference between the first mass and the second mass is calculated, and the second gas mass is obtained. Whether the dissolving reaction is completed is determined according to whether the second gas mass is close to the theoretically calculated first gas mass, that is, when the difference between the first gas mass and the second gas mass is less than or equal to the preset threshold, it is determined that the dissolving reaction is completed, otherwise, it is determined that the dissolving reaction is not completed. The preset threshold can be set according to the material, the type of generated gas, or can be set according to the empirical value.

[0042] Therefore, by maintaining the same vacuum degree of the dissolving tank before and after the gas is discharged, the difference between the masses of the dissolving tank before and after the gas is discharged can be equivalent to the mass of the generated gas in the dissolving reaction, so as to compare with the theoretically generated gas mass, realize the monitoring of the dissolving reaction process, determine whether the dissolving reaction is completed, and improve the production efficiency and safety.

[0043] The material dissolution reaction monitoring method is run on a PLC (programmable controller) on a battery production line. The slurry (first reaction material) and the powder (second reaction material) need to be dissolved. The PLC can determine whether the dissolution reaction of the powder and the slurry is completed. It should be noted that the material dissolution reaction monitoring method can also be deployed on other control devices, such as electronic devices, together with the PLC to control production; the dissolution reaction can also occur between more than two materials; and the materials that generate the chemical reaction are not limited to liquid materials and powder materials, but can also be other types of materials, such as liquid materials and solid materials.

[0044] In this embodiment, first, according to the chemical reaction equation of the slurry and the powder, the mass of the theoretically generated gas, i.e., the first gas mass, is calculated based on the mass of the slurry and the mass of the powder participating in the dissolution reaction. Then, the dissolution tank is pumped by a vacuum pump, and inert gases such as helium, argon, and xenon are introduced into the dissolution tank to replace the moisture and air in the dissolution tank. A detector is installed on the gas output pipe of the dissolution tank. When the detector detects that the moisture and air in the dissolution tank are completely replaced, it is determined that the environment in the dissolution tank reaches the target environment, and the replacement process is stopped. Compared with the conventional operation of only pumping, the replacement operation of this embodiment can more effectively ensure that other impurities do not interfere with the dissolution reaction process.

[0045] After the environment in the dissolution tank reaches the target environment, the slurry is pumped into the dissolution tank, and the powder is positively fed into the feed tank, wherein the feed tank is in pipeline communication with the dissolution tank. Then, the dissolution tank is pumped to make the vacuum degree in the dissolution tank reach a first preset value. The dissolution tank is weighed to obtain the sum of the mass of the dissolution tank and the first reaction material, and the mass of the second reaction material is added to obtain a first mass. That is, the first mass is the sum of the mass of the dissolution tank, the first reaction material, and the second reaction material participating in the dissolution reaction. Preferably, as in this embodiment, the feed tank is installed on the dissolution tank, and the dissolution tank and the feed tank can be weighed together, and the first mass can be obtained by weighing once. Then, the second reaction material is fed into the dissolution tank from the feed tank to start the dissolution reaction. By feeding the first reaction material and the second reaction material into the dissolution tank step by step, the first preset value of the vacuum degree and the first mass are not affected by the dissolution reaction, and the detection accuracy is improved. Moreover, since the feed tank is in pipeline communication with the dissolution tank, the pressure of the feed tank and the dissolution tank is the same during vacuum pumping, so that the powder in the feed tank is fed into the dissolution tank without changing the pressure in the dissolution tank, thereby stabilizing the pressure and ensuring the accuracy of the first preset value.

[0046] In the dissolving reaction, the vacuum degree in the dissolving tank is detected to obtain a measured value, when the measured value is less than or equal to a second preset value, or the difference between the measured value and a first preset value is greater than a vacuum degree threshold, or the vacuum degree changing rate in the dissolving tank is less than a preset threshold, it is determined that the preset condition is met. At this time, the second gas mass of the dissolved gas needs to be detected, and whether the dissolving reaction is completed is determined by the first gas mass and the second gas mass. Specifically, during detection, the dissolving tank is first evacuated to make the vacuum degree in the dissolving tank reach the first preset value, and the dissolving tank is weighed to obtain a second mass, and the difference between the first mass and the second mass is calculated to obtain the second gas mass. By evacuating during detection, the vacuum degree in the dissolving tank at the detection time reaches the vacuum degree before the dissolving reaction, so that the mass of the generated gas can be measured by the difference between the first mass and the second mass before and after the dissolving reaction.

[0047] As can be seen from the above, the embodiment realizes that the first mass before the dissolving reaction and the second mass at the detection time can be used as the mass of the generated gas by stepwise feeding, so that the vacuum degree in the dissolving tank before the dissolving reaction is accurate, and in the dissolving reaction, the vacuum degree in the dissolving tank is the same as that before the dissolving reaction, thereby comparing the mass of the generated gas with the theoretically generated gas to determine whether the dissolving reaction is completed.

[0048] Based on the above material dissolving reaction monitoring method, the application also provides a material dissolving reaction monitoring device, which comprises a memory storing executable program codes and a processor coupled with the memory; the processor calls the executable program codes stored in the memory to execute the material dissolving reaction monitoring method.

[0049] The embodiment also provides a material dissolving reaction system, which is deployed in a battery production line, such as Figure 2 As shown in the figure, the material dissolving reaction system mainly comprises a dissolving tank 10, a feeding tank 11 and a control device 12. The dissolving tank 10 comprises a tank body 101 and a cover body 102, the feeding tank 11 is fixedly installed on the cover body 102, the feeding tank 11 is used to store powder for the dissolving reaction, a first electric ball valve 13 is arranged between the dissolving tank 10 and the feeding tank 11, and the powder in the feeding tank 11 falls into the dissolving tank 10 under the action of gravity when the first electric ball valve 13 is opened. In order to make the feeding tank 11 not affect the vacuum degree in the dissolving tank 10 when feeding, and ensure that the vacuum degree before the dissolving reaction is accurate, a first communication pipe 14 is further arranged between the feeding tank 11 and the dissolving tank 10, and the dissolving tank 10 and the feeding tank 11 can be evacuated together through the first communication pipe 14, so that the vacuum degrees of the dissolving tank 10 and the feeding tank 11 are the same. If the powder is directly delivered to the dissolving tank 10 by positive pressure, the vacuum degree in the dissolving tank 10 will be inevitably affected due to the difference between the delivery pressure and the pressure in the dissolving tank 10, resulting in inaccurate determination result.

[0050] The feeding tank 11 is also in pipeline communication with a sending bin 15, and a first pneumatic ball valve 16 is installed on the pipeline between the feeding tank 11 and the sending bin 15. The sending bin 15 is also in pipeline communication with a first gas cylinder 17, and a first pneumatic diaphragm valve 18 is installed on the pipeline between the sending bin 15 and the first gas cylinder 17. The first pneumatic diaphragm valve 18 and the first pneumatic ball valve 16 are opened, and the powder in the sending bin 15 is positively fed into the feeding tank 11 by the pressure of the first gas cylinder 17.

[0051] The pipeline between the sending bin 15 and the first gas cylinder 17 is in communication with the gas outlet pipe 26 through a second communication pipe 41. A pneumatic diaphragm valve is installed on the second communication pipe 41. By providing the second communication pipe 41, the vacuum pump 27 can pump the pipeline between the sending bin 15 and the first gas cylinder 17 and the sending bin 15, so as to ensure that the powder fed into the feeding tank 11 has no other impurities and improve the detection accuracy.

[0052] The cover 102 of the dissolving tank 10 is provided with a liquid inlet 103, and a liquid inlet pipe 19 is connected to the liquid inlet 103. A second pneumatic ball valve 20 is installed on the liquid inlet pipe 19. After the liquid inlet pipe 19 is communicated with a liquid bin (not shown in the figure), the second pneumatic ball valve 20 is opened, and the slurry can be pumped into the dissolving tank 10.

[0053] Since inert gas is used to replace the air and moisture in the dissolving tank 10 before the dissolving reaction, the cover 102 of the dissolving tank 10 is provided with a gas inlet 21, and the gas inlet 21 is communicated with a second gas cylinder 23 through a gas inlet pipe 22. The second gas cylinder 23 is filled with inert gas, and a second pneumatic diaphragm valve 24 is installed on the gas inlet pipe 22. When the second pneumatic diaphragm valve 24 is opened, the inert gas in the second gas cylinder 23 can enter the dissolving tank 10.

[0054] The cover 102 of the dissolving tank 10 is also provided with a gas outlet 25, and a gas outlet pipe 26 is connected to the gas outlet 25. A vacuum pump 27 is installed on one end of the gas outlet pipe 26, and a third pneumatic diaphragm valve 28 is installed on the gas outlet pipe 26. When the third pneumatic diaphragm valve 28 is opened, the vacuum pump 27 works to pump the dissolving tank 10 and maintain the vacuum degree in the dissolving tank 10. The vacuum pump 27 is also connected to a detection pipe 29, one end of the detection pipe 29 is connected to a three-way valve 30, and the three-way valve 30 is also connected to a detector 31 and an exhaust pipe 32. The detector 31 is used to detect the gas replaced in the dissolving tank 10 when the inert gas is used to replace the air and moisture in the dissolving tank 10, and to determine whether the replacement is completed. The exhaust pipe 32 is communicated with an exhaust treatment pipe 33, and the exhaust treatment pipe 33 is used to treat the gas replaced in the dissolving tank 10 and the gas pumped out of the dissolving tank 10 during the dissolving reaction.

[0055] Multiple weighing sensors 34 are installed at intervals on the tank body 101 of the dissolving tank 10. The weighing sensors 34 are used to weigh the dissolving tank 10 and the feed tank 11 together. In this embodiment, the use of the feed tank 11 not only ensures that the vacuum degree of the dissolving tank 10 is not affected when feeding, but also allows the sum of the mass of the dissolving tank 10, the slurry and the powder to be obtained in one weighing, compared to weighing the dissolving tank 10 and the powder separately, resulting in a more accurate first mass.

[0056] A vacuum sensor 35 is installed on the cover 102 of the dissolving vessel 10. In this embodiment, the vacuum sensor 35 is a digital pressure sensor. The vacuum sensor 35 is used to detect the vacuum level inside the dissolving vessel 10 during the dissolving reaction, obtain the measured value, and transmit the measured value to the control device 12.

[0057] The control device 12 is a PLC, which is in the form of a control cabinet. The control device 12 is electrically connected to at least the vacuum pump 27 and the weighing sensor 34, and is used to control the entire system. The control device 12 runs a material dissolution reaction monitoring method.

[0058] like Figure 3 As shown, the dissolving tank 10 has a stirring shaft 104 inside, which accelerates the dissolving reaction by stirring. A motor 36 and a first gear 37 connected to the motor 36 are mounted on the cover 102 of the dissolving tank 10. The motor 36 drives the first gear 37, which in turn drives the stirring shaft 104 to rotate. To ensure accurate and reliable vacuum within the dissolving tank 10, in this embodiment, the first gear 37 and the stirring shaft 104 are connected by a first magnetic coupler 38. Torque is transmitted magnetically, avoiding the risk of leakage at the shaft seal and ensuring the sealing performance of the dissolving tank 10.

[0059] During the reaction, the generated gas may be trapped within the material and unable to escape in time. In this embodiment, multiple defoaming spirals 105 are installed inside the dissolving tank 10. A second gear 39 is installed on the cover 102 of the dissolving tank 10, and the second gear 39 is connected to the motor 36 via a transmission connection. The second gear 39 and the defoaming spirals 105 are connected via a second magnetic coupler 40. The second magnetic coupler 40 also avoids the risk of leakage at the shaft seal, ensuring the sealing of the dissolving tank.

[0060] In this embodiment, the radial dimension of the defoaming spiral 105 near the bottom of the dissolving tank 10 is designed to be larger than the radial dimension of the end near the top of the dissolving tank 10. The defoaming spiral 105 adopts a shape that is larger at the bottom and smaller at the top, which can promptly turn up the bubbles generated below, thereby accelerating the reaction rate; in addition, it can also be used for stirring, making the dissolution reaction more thorough.

[0061] In some embodiments, a jacket (not shown in the figure) can also be installed on the dissolving tank 10, through which the dissolving tank 10 can be heated according to the reaction requirements of the material, so that the dissolving reaction rate is faster.

[0062] The specific process of monitoring the material dissolving reaction using the material dissolving reaction system of the present embodiment is as follows:

[0063] (1) First, open the vacuum pump 27 and the third pneumatic diaphragm valve 28 to vacuumize the dissolving tank 10, then open the second pneumatic diaphragm valve 24 to introduce inert gas to completely displace the moisture and air in the dissolving tank 10 (whether complete displacement is detected by the detector 31), then close the vacuum pump 27, the third pneumatic diaphragm valve 28 and the second pneumatic diaphragm valve 24; ensure that no other impurities interfere with the dissolving reaction process;

[0064] (2) Open the second pneumatic ball valve 20 to pump the slurry participating in the reaction into the dissolving tank 10, and close the second pneumatic ball valve 20 after pumping is completed;

[0065] (3) Open the first pneumatic ball valve 16 and the first pneumatic diaphragm valve 18 to send the powder to the feed tank 11 by positive pressure, and close the first pneumatic ball valve 16 and the first pneumatic diaphragm valve 18 after delivery is completed;

[0066] (4) Open the vacuum pump 27 and the third pneumatic diaphragm valve 28 to vacuumize the dissolving tank 10 and the feed tank 11 (the feed tank 11 and the dissolving tank 10 are connected by the first communication pipe 14), for example, vacuumize to 80 KPa, then close the vacuum pump 27 and the third pneumatic diaphragm valve 28, then weigh by the weighing sensor 34 to obtain the first mass;

[0067] (5) Open the motor 36, then open the first electric ball valve 13, the powder will fall into the dissolving tank 10 by gravity to start the reaction, and can be heated according to the reaction requirements through the jacket;

[0068] (6) The gas generated in the dissolution reaction can cause the vacuum degree in the dissolving tank 10 to decrease. The vacuum degree in the dissolving tank 10 can be detected in real time by the vacuum degree sensor 35. When the vacuum degree decreases to 75 KPa, the vacuum pump 27 is started by PLC control to pump out the gas in the dissolving tank 10 until the vacuum degree in the dissolving tank 10 is pumped to 80 KPa. The total mass of the dissolving tank 10 is weighed by the weighing sensor 34 to obtain a second mass. The difference between the first mass and the second mass is calculated to obtain a second gas mass. Whether the second gas mass is close to the theoretical gas mass (i.e. the first gas mass) is compared. If not, the reaction continues, and the second gas mass is recalculated when the vacuum degree decreases to 75 KPa again. Then the comparison between the second gas mass and the first gas mass is continued until the second gas mass is close to the first gas mass. At this time, it is determined that the dissolution reaction is completed.

[0069] In summary, the material dissolution reaction system of the present embodiment combines vacuum control and real-time weighing technology, and ingeniously integrates real-time detection of reaction gas production into the operation process of the dissolving tank. The data of the weighing sensor can be used to determine whether the dissolution reaction is complete in time.

[0070] The above embodiments are intended to exemplarily reproduce and deduce the technical solutions of the present application, and to completely describe the technical solutions, objects and effects of the present application. The purpose is to make the public more thoroughly and comprehensively understand the disclosed content of the present application, and not to limit the protection scope of the present application.

[0071] The above embodiments are not exhaustive based on the present application. There can be many other unlisted embodiments. Any substitution and improvement made without violating the concept of the present application is within the protection scope of the present application.

Claims

1. A method for monitoring the dissolution reaction of materials, characterized in that, include: Based on the reaction equation, calculate the first gas mass of the gas generated by the dissolution reaction according to the mass of all materials; To bring the environment inside the dissolving tank to the target environment; In the dissolution reaction, when the preset conditions are met, the vacuum degree in the dissolution tank is the same as the vacuum degree in the dissolution tank before the dissolution reaction. The difference between the first mass before the dissolution reaction and the second mass during the dissolution reaction is calculated to obtain the second gas mass. The first mass and the second mass are the sum of the masses of the dissolution tank, the first reactant and the second reactant. When the difference between the first gas mass and the second gas mass is less than or equal to a preset threshold, the dissolution reaction is determined to be completed; otherwise, the dissolution reaction is determined to be incomplete. The materials include a first reactant and a second reactant. After bringing the environment inside the dissolving tank to the target environment, the process further includes: The first reactant is put into the dissolving tank, and the second reactant is put into the feed tank installed on the dissolving tank and connected to the dissolving tank pipeline. The dissolving tank is evacuated to make the vacuum degree inside the dissolving tank reach the first preset value. The dissolving tank is weighed to obtain the first mass. The second reactant is put into the dissolving tank from the feed tank to start the dissolving reaction. The process of ensuring the vacuum level inside the dissolving vessel is the same as the vacuum level before the dissolving reaction, and calculating the difference between the first mass before the dissolving reaction and the second mass during the dissolving reaction to obtain the second gas mass includes: The dissolving vessel is evacuated to a first preset vacuum level, and the dissolving vessel is weighed to obtain the second mass. The difference between the first mass and the second mass is calculated to obtain the second gas mass.

2. The method for monitoring material dissolution reactions as described in claim 1, characterized in that, During the dissolution reaction, the vacuum level inside the dissolution vessel is detected to obtain a measured value. When the measured value is less than or equal to a second preset value, it is determined that the preset condition is met.

3. The method for monitoring material dissolution reactions as described in claim 1 or 2, characterized in that, The process of bringing the environment inside the dissolving tank to the target environment includes: The dissolving tank is evacuated, and inert gas is used to replace the water and air inside the tank.

4. A material dissolution reaction monitoring device, characterized in that, It includes a memory storing executable program code and a processor coupled to the memory; the processor calls the executable program code stored in the memory to execute the material dissolution reaction monitoring method according to any one of claims 1 to 3.

5. A material dissolution reaction system, characterized in that, include: The system includes a vacuum pump, a dissolving tank, a weighing sensor, and a control device. The vacuum pump is connected to the dissolving tank via a pipeline, and the control device is electrically connected to the vacuum pump and the weighing sensor. The vacuum pump is used to evacuate the dissolving tank, the dissolving tank is used to carry out a material dissolving reaction, the weighing sensor is used to weigh the dissolving tank, and the control device executes the material dissolving reaction monitoring method as described in any one of claims 1-3.

6. The material dissolution reaction system as described in claim 5, characterized in that, It also includes a vacuum sensor, which is used to detect the vacuum level in the dissolution tank during the dissolution reaction, obtain the measured value, and transmit the measured value to the control device.

7. The material dissolution reaction system as described in claim 5, characterized in that, The dissolving tank has a stirring shaft, a motor, and a first gear connected to the motor. The first gear and the stirring shaft are connected by a first magnetic coupler.

8. The material dissolution reaction system as described in claim 7, characterized in that, The dissolving tank also has multiple defoaming spirals and a second gear connected to the motor drive. The second gear and the defoaming spirals are connected by a second magnetic coupler.

9. The material dissolution reaction system as described in claim 8, characterized in that, The radial dimension of the first end of the defoaming spiral is greater than the radial dimension of the second end of the defoaming spiral. The first end is adjacent to the bottom of the dissolving tank, and the second end is adjacent to the top of the dissolving tank.

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