Intelligent control method for continuous production of cerium ammonium nitrate precipitation process and application
By using intelligent control methods to adjust the dripping rates of hydrogen peroxide and ammonia in real time, the problem of unstable quality in the cerium ammonium nitrate precipitation process was solved, achieving stability and continuity in the production process and avoiding the generation of unqualified products.
Patent Information
- Application Number
- CN202511394148.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-28
- Publication Date
- 2025-12-23
- Estimated Expiration
- 2045-09-28
AI Technical Summary
The existing continuous production control methods for the cerium ammonium nitrate precipitation process suffer from unstable quality, difficulty in controlling sampling time, and slow analysis speed, resulting in a high frequency of product quality defects.
The system employs an intelligent control method, using a potential sensor to monitor the reaction process in real time. The server adjusts the dripping rate of hydrogen peroxide and ammonia based on the potential deviation, and combined with heating and valve control, it achieves automatic adjustment of reaction conditions.
This ensured stable quality in the cerium ammonium nitrate precipitation process, preventing substandard products from entering the next process. Furthermore, it enabled timely adjustments and resumption of production in case of abnormal situations, guaranteeing production continuity and quality.
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Figure CN120871797B_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the field of intelligent production control, and more particularly, to an intelligent control method for continuous production of a cerium ammonium nitrate precipitation process and application. BACKGROUND
[0002] The existing cerium ammonium nitrate precipitation process is mostly intermittent, that is, hydrogen peroxide is first added in the reaction kettle for reaction, and then ammonia water is added for reaction. There are also very few continuous reactions using a tubular reactor.
[0003] The existing few continuous reaction production methods control production by setting the flow of trivalent Ce ion solution per unit time, calculating the drop speed of hydrogen peroxide and the drop speed of ammonia water according to the theoretical value, sampling and chemically analyzing the discharge pipe of the tubular reactor, and adjusting the drop speed of hydrogen peroxide and the drop speed of ammonia water according to the chemical analysis results. On the one hand, the sampling time is not easy to control, and on the other hand, the analysis speed is slow, resulting in unstable quality of the product entering the subsequent process, and a high frequency of unqualified products.
[0004] The above background is for the convenience of understanding the present application, and is not the known technology publicly disclosed to the public before the present application. SUMMARY
[0005] In view of the above problems, the present application provides an intelligent control method for continuous production of a cerium ammonium nitrate precipitation process, which intelligently controls the reaction process and adjusts the process in a timely manner to avoid unqualified products entering the next process and ensure the quality stability of the entire process.
[0006] An intelligent control method for continuous production of a cerium ammonium nitrate precipitation process, comprising a hydrogen peroxide section intelligent control method and an ammonia water section intelligent control method, wherein:
[0007] The hydrogen peroxide section intelligent control method comprises the following steps:
[0008] S1, the server receives a set hydrogen peroxide section post-reaction target potential value, denoted as V2;
[0009] S2, the second potential sensor sends a first real-time potential value of the second potential sensor to the server, and the server receives the first real-time potential value of the second potential sensor, denoted as V2"; the server sets X2 = V2"-V2, if the absolute value of X2 is within the threshold value, the production continues, and if the absolute value of X2 is outside the threshold value, an alarm instruction is output;
[0010] The ammonia water section intelligent control method comprises the following steps:
[0011] M1, the server receives the set ammonia section after the reaction site target potential value, ammonia section after the reaction site target potential value is recorded as V3;
[0012] M2, the third potential sensor sends the first real-time potential value of the third potential sensor to the server, the server receives the first real-time potential value of the third potential sensor, the first real-time potential value of the third potential sensor is recorded as V3", the server makes X3 = V3"-V3, if the absolute value of X3 is within the threshold value, the production continues, if the absolute value of X3 is outside the threshold value, an alarm instruction is output.
[0013] Optionally, the second potential sensor is used to detect the potential of the mixed solution after the hydrogen peroxide section reaction, and the third potential sensor is used to detect the potential of the mixed solution after the ammonia section reaction.
[0014] Optionally, in S1, the server also receives the set hydrogen peroxide section before the reaction site target potential value, which is recorded as V1; in S2, the first potential sensor sends the real-time potential value of the first potential sensor to the server, which is recorded as V1", and the server makes X1 = V1"-V1, if the absolute value of X1 is within the threshold value, the production continues, if the absolute value of X1 is outside the threshold value, an alarm instruction is output.
[0015] Optionally, the intelligent control method of the hydrogen peroxide section further comprises the following steps:
[0016] S3, when the absolute value of X2 is outside the threshold value, if X2 is positive, the server sends a lower hydrogen peroxide drop speed instruction to the hydrogen peroxide drop speed execution mechanism, and the server also sends a heating instruction to the heater execution mechanism of the liquid storage opening tank installed on the intermediate discharge pipe, the hydrogen peroxide drop speed execution mechanism executes the lower hydrogen peroxide drop speed instruction after receiving the instruction, and the heater execution mechanism executes the heating instruction after receiving the instruction; if X2 is negative, the server sends a higher hydrogen peroxide drop speed instruction to the hydrogen peroxide drop speed execution mechanism, and the server sends a closing instruction to the first valve execution mechanism installed on the intermediate discharge pipe and an opening instruction to the second valve execution mechanism installed on the first reflux pipe, the first valve execution mechanism executes the instruction after receiving the instruction, the second valve execution mechanism executes the instruction after receiving the instruction, and the hydrogen peroxide drop speed execution mechanism executes the higher hydrogen peroxide drop speed instruction after receiving the instruction;
[0017] S4, the second potential sensor continues to send the second real-time potential value of the second potential sensor to the server, the second real-time potential value of the second potential sensor is recorded as V2"", the server receives the second real-time potential value of the second potential sensor, the server makes X2"= V2""-V2; if the absolute value of X2" is within the threshold value, if it is a production abnormality caused by X2 being positive, a heating implement mechanism is sent a heating instruction, after the implement mechanism receives the instruction, the heating implement mechanism closes the heating, if it is a production abnormality caused by X2 being negative, a first valve implement mechanism is sent an opening instruction, a second valve implement mechanism is sent a closing instruction, after the first valve implement mechanism receives the instruction, the first valve implement mechanism executes the instruction, after the second valve implement mechanism receives the instruction, the second valve implement mechanism executes the instruction; if the absolute value of X2" is outside the threshold value, under the condition of lowering the hydrogen peroxide drop speed, if X2" is positive, the server sends a further hydrogen peroxide drop speed lowering instruction to the hydrogen peroxide drop speed implement mechanism; if X2" is negative, the server sends a hydrogen peroxide drop speed increasing instruction to the hydrogen peroxide drop speed implement mechanism, a closing instruction to the first valve implement mechanism, an opening instruction to the second valve implement mechanism, and a closing instruction to the heating implement mechanism; under the condition of increasing the hydrogen peroxide drop speed, if X2" is positive, the server sends a hydrogen peroxide drop speed lowering instruction to the hydrogen peroxide drop speed implement mechanism, an opening instruction to the first valve implement mechanism, a closing instruction to the second valve implement mechanism, and a heating instruction to the heating implement mechanism; if X2" is negative, the server sends a further hydrogen peroxide drop speed increasing instruction to the hydrogen peroxide drop speed implement mechanism;
[0018] S4 is repeated until X2" is within the threshold value, and normal production is resumed under the new balance, at this time, the first valve is in an open state, the second valve is in a closed state, and the heater is in a closed state.
[0019] Optionally, when the liquid returns to the hydrogen peroxide section of the tubular reactor due to insufficient hydrogen peroxide, the increasing amplitude of the hydrogen peroxide drop speed implement mechanism increasing the hydrogen peroxide drop speed is positively correlated with the amount of hydrogen peroxide required to supplement the returned portion of the liquid and the absolute value of X2; when there is excessive hydrogen peroxide, the decreasing amplitude of the hydrogen peroxide drop speed implement mechanism decreasing the hydrogen peroxide drop speed is positively correlated with X2.
[0020] Optionally, in M2, when the absolute value of X3 is outside the threshold value, if X3 is positive, the server sends an ammonia water drop speed increasing instruction to the ammonia water drop speed implement mechanism, and at the same time, the server also sends a closing instruction to the third valve implement mechanism installed on the discharge pipe and an opening instruction to the fourth valve implement mechanism installed on the second reflux pipe, the third valve implement mechanism receives the instruction and executes it, the fourth valve implement mechanism receives the instruction and executes it, and the ammonia water drop speed implement mechanism receives the instruction and executes the ammonia water drop speed increasing instruction; if X3 is negative, the server sends an ammonia water drop speed decreasing instruction to the ammonia water drop speed implement mechanism, and at the same time, the server sends an acid addition instruction to the acid liquid drop addition implement mechanism installed on the discharge pipe, and the acid liquid drop addition implement mechanism receives the instruction and executes it.
[0021] The intelligent control method of the ammonia water section further comprises the following steps: M3, the third potential sensor continues to send the second real-time potential value of the third potential sensor to the server, the second real-time potential value of the third potential sensor is recorded as V3"", the server receives the second real-time potential value of the third potential sensor, the server makes X3"= V3""-V3; if the absolute value of X3" is within the threshold value, the abnormality ends, and the reaction reaches balance in the new state; if the production abnormality is caused by excessive ammonia water, a closing dropping instruction is sent to the acid liquid dropping actuator, the acid liquid dropping actuator stops dropping the acid liquid after receiving the instruction, if the rare earth ions are not completely precipitated, an opening instruction is sent to the third valve actuator and a closing instruction is sent to the fourth valve actuator, the third valve actuator executes the instruction after receiving the instruction, and the fourth valve actuator executes the instruction after receiving the instruction; if the absolute value of X3" is outside the threshold value, under the condition of lowering the ammonia water dropping speed, if X3" is positive, the server sends a high-oxygen water dropping speed instruction to the ammonia water dropping speed actuator, a closing instruction to the third valve actuator, an opening instruction to the fourth valve actuator, and a stopping instruction to the acid liquid dropping actuator; if X3" is negative, the server sends a further lowering ammonia water dropping speed instruction to the ammonia water dropping speed actuator; under the condition of increasing the ammonia water dropping speed, if X3" is positive, the server sends a continue to increase ammonia water dropping speed instruction to the ammonia water dropping speed actuator; if X3" is negative, the server sends a high-oxygen water dropping speed instruction to the ammonia water dropping speed actuator, an opening instruction to the third valve actuator, a closing instruction to the fourth valve actuator, and an acid liquid dropping instruction to the acid liquid dropping actuator;
[0022] M3 is repeated until X3" is within the threshold value, and normal production is resumed under the new balance, at this time, the third valve is in the opening state, the fourth valve is in the closing state, and the acid liquid dropper is in the closing state.
[0023] Optionally, when the ammonia water section tubular reactor is caused by insufficient ammonia water, the increasing amplitude of the ammonia water dropping speed actuator increasing the ammonia water dropping speed is positively correlated with the amount of ammonia water required to be added by the returned part of the liquid and the absolute value of X3; when there is excessive ammonia water, the lowering amplitude of the ammonia water dropping speed actuator lowering the high-oxygen water dropping speed is positively correlated with X3.
[0024] Optionally, in M1, the server receives a set ammonia water section reaction target pH value, and the target pH value is recorded as Q.
[0025] In M2, the pH sensor sends a first real-time pH value to the server, the server receives the first real-time pH value, the first real-time pH value is recorded as Q'', when the absolute value of X3 is within the threshold value, the server sets Y=Q''-Q, if Y is within the threshold value, the production continues; if Y is outside the threshold value, the server sends an ammonia water drop speed reducing instruction to the ammonia water drop speed executing mechanism, and simultaneously sends an acid adding instruction to the acid drop executing mechanism, the acid drop executing mechanism receives the instruction and executes the instruction; the pH sensor continues to send a second real-time pH value to the server, the server receives the second real-time pH value, the second real-time pH value is recorded as Q''', when the absolute value of X3 is within the threshold value, the server sets Y''=Q'''-Q, if Y'' is within the threshold value, the server sends a stop adding acid instruction to the acid drop executing mechanism, the acid drop executing mechanism receives the instruction and executes the instruction, if Y'' is outside the threshold value, the server continues to send an ammonia water drop speed reducing instruction to the acid drop executing mechanism until Y'' is within the threshold value; when the absolute value of X3 is outside the threshold value, the operation of the absolute value of X3 being outside the threshold value is executed.
[0026] Optionally, the second potential sensor is installed at the intersection of the hydrogen peroxide section tubular reactor and the intermediate discharge pipe, the third potential sensor is installed at the intersection of the ammonia water section tubular reactor and the discharge pipe, and the pH sensor is installed at the intersection of the ammonia water section tubular reactor and the discharge pipe.
[0027] The application further provides an electronic device.
[0028] An electronic device comprises a memory, a processor, and a computer program stored in the memory and executable on the processor, and the processor implements the steps of the intelligent control method for continuous production of the ammonium ceric nitrate precipitation process as described above when executing the program.
[0029] Compared with the prior art, the application has the following beneficial effects:
[0030] The application intelligently controls the reaction process, timely adjusts the process, avoids the unqualified products from entering the next process, ensures the quality stability of the whole process, continuously produces when the production is abnormal, intelligently recovers the production abnormality, and solves the gelatin problem caused by the too fast ammonia water drop speed due to misjudgment. BRIEF DESCRIPTION OF DRAWINGS
[0031] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without any creative labor.
[0032] Fig. 1is the interactive diagram of the hydrogen peroxide section of the present application;
[0033] Fig. 2 is the interactive diagram of the ammonia water section of the present application;
[0034] Fig. 3 is the installation position schematic diagram of the potential sensor and the pH sensor of the present application;
[0035] Legend: 1, first potential sensor, 2, second potential sensor, 3, third potential sensor, 4, pH sensor, 11, hydrogen peroxide section tubular reactor, 12, trivalent Ce ion solution feeding pipe, 13, intermediate discharge pipe, 14, ammonia water section tubular reactor, 15, discharge pipe, 16, liquid storage open tank, 17, heater actuator, 18, first valve actuator, 19, second valve actuator, 10, hydrogen peroxide drop speed actuator, 20, ammonia water drop speed actuator, 21, third valve actuator, 22, fourth valve actuator, 23, acid liquid drop adding actuator. DETAILED DESCRIPTION
[0036] The present application will be further described below in conjunction with the accompanying drawings.
[0037] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms “mounting”, “connection”, “linking” should be understood in a broad sense, for example, it can be fixed connection, or indirect connection through an intermediate medium, or internal communication of two elements or interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.
[0038] In the description of the present application, it should be understood that the terms “up”, “down”, “front”, “back”, “vertical”, “horizontal”, “top”, “bottom”, “inner”, “outer” and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation on the present application. In the description of the present application, the meaning of “multiple” is two or more, unless otherwise specified and limited.
[0039] The terms "first", "second", "third", "fourth" and the like in the description and in the claims of the present application, if any, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the use of these terms herein is to be construed to cover a generalised use of these terms to describe the embodiments of the application, unless explicitly stated otherwise. Furthermore, the terms "comprising", "having", "including" and "containing" and any variations thereof used herein are intended to cover a non-exclusive inclusion, such that a process, method, system, product or apparatus that comprises, has, includes or contains a list of elements is not necessarily limited to those elements, but can include other elements not expressly listed or inherent to such process, method, system, product or apparatus.
[0040] For the purpose of clarity, technical solutions in the embodiments of the present application will be described below in connection with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present application.
[0041] Please refer to Figs. 1-3 , Fig. 1 is the interactive diagram of the hydrogen peroxide section of the present application, Fig. 2 is the interactive diagram of the ammonia water section of the present application, Fig. 3 is a schematic diagram of the installation position of the potential sensor and the pH sensor.
[0042] In the application, the continuous reaction device of the cerium ammonium nitrate precipitation process comprises a hydrogen peroxide section pipe reactor 11, an ammonia section pipe reactor 14, a first reflux pipe and a second reflux pipe, the hydrogen peroxide section pipe reactor 11 is communicated with the ammonia section pipe reactor 14 through an intermediate discharge pipe 13, a discharge pipe 15 is connected at the tail of the ammonia section pipe reactor 14, one end of the first reflux pipe is connected with the intermediate discharge pipe 13, the other end is connected with the hydrogen peroxide section pipe reactor 11, one end of the second reflux pipe is connected with the discharge pipe 15, the other end is connected with the ammonia section pipe reactor 14, a trivalent Ce ion solution feeding pipe 12 is connected at the head of the hydrogen peroxide section pipe reactor 11, a liquid storage open tank 16 is installed on the intermediate discharge pipe 13, a second valve actuator 19 is installed on the liquid storage open tank 16, a first valve actuator 18 is installed on the intermediate discharge pipe 13, located in front of the liquid storage open tank 16 and behind the first reflux pipe, the second valve actuator 19 is installed on the first reflux pipe, a hydrogen peroxide drop speed actuator 10 is installed at the head of the hydrogen peroxide section pipe reactor 11, an ammonia water drop speed actuator 20 is installed at the head of the ammonia section pipe reactor 14, a third valve actuator 21 and an acid liquid drop adding actuator 23 are installed on the discharge pipe 15, the third valve actuator 21 is located in front of the acid liquid drop adding actuator 23 and behind the second reflux pipe, a fourth valve actuator 22 is installed on the second reflux pipe; a first potential sensor 1 is installed at the intersection of the hydrogen peroxide section pipe reactor 11 and the trivalent Ce ion solution feeding pipe 12, a second potential sensor 2 is installed at the intersection of the hydrogen peroxide section pipe reactor 11 and the intermediate discharge pipe 13, a third potential sensor 3 is installed at the intersection of the ammonia section pipe reactor 14 and the discharge pipe 15, and a pH sensor 4 is installed at the intersection of the ammonia section pipe reactor 14 and the discharge pipe 15.
[0043] An intelligent control method for continuous production of cerium ammonium nitrate precipitation process, comprising hydrogen peroxide section intelligent control method and ammonia section intelligent control method, wherein:
[0044] The hydrogen peroxide section intelligent control method comprises the following steps:
[0045] S1, in the calibration stage: the server receives the set hydrogen peroxide section pre-reaction site target potential value and the hydrogen peroxide section post-reaction site target potential value, wherein the hydrogen peroxide section pre-reaction site target potential value is denoted as V1, and the hydrogen peroxide section post-reaction site target potential value is denoted as V2.
[0046] S2, in the production stage: the first potential sensor 1 sends the first potential sensor real-time potential value to the server, the second potential sensor 2 sends the second potential sensor first real-time potential value to the server, and the server receives the first potential sensor real-time potential value and the second potential sensor first real-time potential value respectively, wherein the first potential sensor real-time potential value is denoted as V1", and the second potential sensor first real-time potential value is denoted as V2"; the server sets X1= V1"-V1, if the absolute value of X1 is within the threshold value, the production continues, if the absolute value of X1 is outside the threshold value, an alarm instruction is output; the server sets X2= V2"-V2, if the absolute value of X2 is within the threshold value, the production continues, if the absolute value of X2 is outside the threshold value, an alarm instruction is output.
[0047] The intelligent control method of the ammonia water section comprises the following steps:
[0048] M1, in the calibration stage: the server receives a set ammonia water section post-reaction site target potential value, denoted as V3.
[0049] M2, in the production stage: the third potential sensor 3 sends the third potential sensor first real-time potential value to the server, and the server receives the third potential sensor first real-time potential value, denoted as V3"; the server sets X3= V3"-V3, if the absolute value of X3 is within the threshold value, the production continues, if the absolute value of X3 is outside the threshold value, an alarm instruction is output.
[0050] Further, the intelligent control method of the hydrogen peroxide section further comprises S3, in the production stage: when the absolute value of X2 is outside the threshold value, the server further sends a speed adjusting instruction to the hydrogen peroxide drop speed execution mechanism 10 and a heating instruction to the heater execution mechanism 17 (or a closing instruction to the first valve execution mechanism 18 and an opening instruction to the second valve execution mechanism 19).
[0051] Further, the intelligent control method of the hydrogen peroxide section further comprises S4, in the production stage: the second potential sensor 2 continues to send the second potential sensor second real-time potential value to the server, denoted as V2""; the server receives the second potential sensor second real-time potential value; the server sets X2"= V2""-V2, if the absolute value of X2" is within the threshold value, the abnormality ends, a heating closing instruction is sent (or a first valve opening instruction is sent, and a second valve closing instruction is sent), if the absolute value of X2" is outside the threshold value, a continuous speed adjusting instruction is sent, and the process is repeated until the absolute value of X2" is within the threshold value.
[0052] Further, M2, in the production stage: when the absolute value of X3 is outside the threshold value, the speed adjusting instruction is also sent to the ammonia water drop speed executing mechanism 20, the closing instruction is sent to the third valve executing mechanism 21, and the opening instruction is sent to the fourth valve executing mechanism 22 (or the acid adding instruction is sent to the acid liquid drop adding executing mechanism 23).
[0053] Further, the ammonia water section intelligent control method further comprises M3, in the production stage: the third potential sensor 3 continues to send the third potential sensor second real-time potential value to the server, the third potential sensor second real-time potential value is denoted as V3"", the server receives the third potential sensor second real-time potential value, the server sets X3" = V3""-V3, X3" = V3""-V3, if the absolute value of X3" is within the threshold value, the abnormality ends, and the closing acid adding instruction (that is, the opening instruction is sent to the third valve executing mechanism 21, and the closing instruction is sent to the fourth valve executing mechanism 22 (or the stop acid adding instruction is sent to the acid liquid drop adding executing mechanism 23)) is sent; if the absolute value of X3" is outside the threshold value, the speed adjusting instruction is sent until X3" is within the threshold value.
[0054] Further, M1, in the calibration stage: the server also receives the set ammonia water section reaction target pH value, and the target pH value is denoted as Q. M2, in the production stage: the pH sensor 4 sends the first real-time pH value to the server, the server receives the first real-time pH value, the first real-time pH value is denoted as Q", when the absolute value of X3 is within the threshold value, the server sets Y = Q"-Q, if Y is within the threshold value, the production continues, if Y is outside the threshold value, the speed adjusting instruction is sent, that is, the speed adjusting instruction is sent to the ammonia water drop speed executing mechanism 20, and the acid adding instruction is sent to the acid liquid drop adding executing mechanism 23. In the production stage: the pH sensor 4 continues to send the second real-time pH value to the server, the server receives the second real-time pH value, the second real-time pH value is denoted as Q"", when the absolute value of X3 is within the threshold value, the server sets Y" = Q""-Q, if Y" is within the threshold value, the stop acid adding instruction is sent to the acid liquid drop adding executing mechanism 23, if Y" is outside the threshold value, the speed adjusting instruction is continuously sent to the ammonia water drop speed executing mechanism 20 until Y" is within the threshold value.
[0055] The technical solutions of the present application will be described in detail below with specific examples. The following specific examples can be combined with each other, and some examples may not be described again for the same or similar concepts or processes.
[0056] Example 1
[0057] Please refer to Figs. 1-3 .
[0058] An intelligent control method for continuous production of a cerium ammonium nitrate precipitation process, comprising a hydrogen peroxide section intelligent control method and an ammonia water section intelligent control method, wherein:
[0059] The intelligent control method of hydrogen peroxide section includes the following steps:
[0060] S1, in the calibration stage: the server receives the set hydrogen peroxide section reaction before site target potential value, hydrogen peroxide section reaction after site target potential value, wherein the hydrogen peroxide section reaction before site target potential value is recorded as V1, and the hydrogen peroxide section reaction after site target potential value is recorded as V2.
[0061] S2, in the production stage: the first potential sensor 1 sends the first potential sensor real-time potential value to the server, and the second potential sensor 2 sends the second potential sensor first real-time potential value to the server, and the server receives the first potential sensor real-time potential value and the second potential sensor first real-time potential value respectively, wherein the first potential sensor real-time potential value is recorded as V1", and the second potential sensor first real-time potential value is recorded as V2", the server makes X1= V1"-V1, if the absolute value of X1 is within the threshold value, it is indicated that the hydrogen peroxide section trivalent Ce ion solution feeding is correct, and the production continues, if the absolute value of X1 is outside the threshold value, it is indicated that the hydrogen peroxide section trivalent Ce ion solution feeding error occurs, and an alarm instruction is output; the server makes X2= V2"-V2, if the absolute value of X2 is within the threshold value, it is indicated that the hydrogen peroxide section reaction after mixture meets the quality requirements, the hydrogen peroxide drop speed matches the hydrogen peroxide section reaction, and the production continues, if the absolute value of X2 is outside the threshold value, it is indicated that the hydrogen peroxide section reaction after mixture does not meet the quality requirements, the hydrogen peroxide drop speed does not match the hydrogen peroxide section reaction, and an alarm instruction is output.
[0062] The first potential sensor 1 is used for detecting the potential of the trivalent Ce ion solution before the hydrogen peroxide section reaction, and the second potential sensor 2 is used for detecting the potential of the mixed solution after the hydrogen peroxide section reaction.
[0063] The matching means that the hydrogen peroxide drop speed makes the trivalent Ce ion solution and the hydrogen peroxide mixed reaction completely react when leaving the hydrogen peroxide section tubular reactor 11, and the error is within the acceptable range.
[0064] The intelligent control method of ammonia section includes the following steps:
[0065] M1, in the calibration stage: the server receives the set ammonia section reaction after site target potential value, and the ammonia section reaction after site target potential value is recorded as V3.
[0066] M2, in the production stage: the third potential sensor 3 sends the third potential sensor first real-time potential value to the server, the server receives the third potential sensor first real-time potential value, the third potential sensor first real-time potential value is recorded as V3", the server makes X3= V3"-V3, if the absolute value of X3 is within the threshold, it means that the mixture after the ammonia water section reaction meets the quality requirements, the ammonia water drop speed matches the ammonia water section reaction, and the production continues, if the absolute value of X3 is outside the threshold, it means that the mixture after the ammonia water section reaction does not meet the quality requirements, the ammonia water drop speed does not match the ammonia water section reaction, and an alarm instruction is output.
[0067] The third potential sensor 3 is used to detect the potential of the mixed solution after the ammonia water section reaction.
[0068] The matching means that the ammonia water drop speed is completely reacted with the mixed solution when it leaves the ammonia water section pipe reactor 14, and the error is within the acceptable range.
[0069] Example 2
[0070] Although example 1 can carry out normal production, when an abnormality occurs and does not match when the trivalent Ce ion solution feeding pipe 12 feeds correctly, there is no other corresponding measure to continue continuous production except outputting an alarm instruction to stop production.
[0071] Please refer to Figs. 1-3 , on the basis of example 1:
[0072] S3, in the production stage: when the absolute value of X2 is outside the threshold, if X2 is positive, it means that the hydrogen peroxide is excessive, the server sends a lower hydrogen peroxide drop speed instruction to the hydrogen peroxide drop speed actuator 10, and at the same time the server also sends a heating instruction to the heater actuator 17 installed on the liquid storage opening tank 16 on the intermediate discharge pipe 13, the hydrogen peroxide drop speed actuator 10 receives the instruction and executes the lower hydrogen peroxide drop speed instruction, and the heater actuator 17 receives the instruction and executes the heating instruction.
[0073] If X2 is negative, it means that the reaction is not complete, part of the trivalent Ce ion has not been converted, the server sends a higher hydrogen peroxide drop speed instruction to the hydrogen peroxide drop speed actuator 10, at the same time the server sends a closing instruction to the first valve actuator 18 installed on the intermediate discharge pipe 13, and sends an opening instruction to the second valve actuator 19 installed on the first reflux pipe, the first valve actuator 18 receives the instruction and executes the instruction, the second valve actuator 19 receives the instruction and executes the instruction, and the hydrogen peroxide drop speed actuator 10 receives the instruction and executes the higher hydrogen peroxide drop speed instruction.
[0074] In this embodiment, when the mixed solution after reaction leaves the hydrogen peroxide section tubular reactor 11, if it belongs to hydrogen peroxide excess, the excess hydrogen peroxide is removed by heating to ensure that the solution quality reaching the ammonia section tubular reactor 14 meets the requirements; if there is still trivalent Ce ion, it is returned to the hydrogen peroxide section tubular reactor 11 for continuous reaction to ensure that the solution quality reaching the ammonia section tubular reactor 14 meets the requirements.
[0075] Thus, although the alarm is also issued when an abnormality occurs, production is not stopped.
[0076] S4, in the production stage: the second potential sensor 2 continues to send the second potential sensor second real-time potential value to the server, the second potential sensor second real-time potential value is recorded as V2"", the server receives the second potential sensor second real-time potential value, and the server makes X2"= V2""- V2.
[0077] If the absolute value of X2" is within the threshold value, it indicates that the hydrogen peroxide section reaction mixture meets the quality requirements, the abnormality ends, and the reaction is balanced in the new state; if the production abnormality is caused by hydrogen peroxide excess, a heating-off instruction is sent to the heater actuator 17, and the heater actuator 17 receives the instruction and then turns off the heating; if the trivalent Ce ion is not completely converted, the first valve actuator 18 sends an open instruction, the second valve actuator 19 sends a close instruction, the first valve actuator 18 receives the instruction and then executes it, and the second valve actuator 19 receives the instruction and then executes it.
[0078] If the absolute value of X2" is outside the threshold value, in the case of reducing the hydrogen peroxide drop speed, if X2" is positive, it indicates that the hydrogen peroxide is still excessive, the server sends a further hydrogen peroxide drop speed reduction instruction to the hydrogen peroxide drop speed actuator 10; if X2" is negative, it indicates that the hydrogen peroxide is insufficient, the server sends a hydrogen peroxide drop speed increase instruction to the hydrogen peroxide drop speed actuator 10, a close instruction to the first valve actuator 18, an open instruction to the second valve actuator 19, and a heating-off instruction to the heater actuator 17. In the case of increasing the hydrogen peroxide drop speed, if X2" is positive, it indicates that the hydrogen peroxide is excessive, the server sends a hydrogen peroxide drop speed reduction instruction to the hydrogen peroxide drop speed actuator 10, the server sends an open instruction to the first valve actuator 18, a close instruction to the second valve actuator 19, and a heating-on instruction to the heater actuator 17; if X2" is negative, the server sends a hydrogen peroxide drop speed increase instruction to the hydrogen peroxide drop speed actuator 10.
[0079] This step is repeated until X2" is within the threshold value, and normal production is resumed in the new balance. At this time, the first valve is in the open state, the second valve is in the closed state, and the heater is in the closed state.
[0080] M2, in the production stage: when the absolute value of X3 is outside the threshold value, if X3 is positive, it means that the ammonia water drop speed is too small, the server sends a command to increase the ammonia water drop speed to the ammonia water drop speed execution mechanism 20, and at the same time, the server also sends a command to close the third valve execution mechanism 21 installed on the discharge pipe 15 and a command to open the fourth valve execution mechanism 22 installed on the second reflux pipe, the third valve execution mechanism 21 executes the command after receiving the command, the third valve execution mechanism 21 executes the command after receiving the command, and the ammonia water drop speed execution mechanism 20 executes the command to increase the ammonia water drop speed after receiving the command.
[0081] If X3 is negative, it means that the ammonia water drop speed is too large, the server sends a command to reduce the ammonia water drop speed to the ammonia water drop speed execution mechanism 20, and at the same time, the server sends a command to add acid to the acid liquid drop execution mechanism 23 installed on the discharge pipe 15, the acid liquid drop execution mechanism 23 executes the command after receiving the command, and ensures that the product reaching the next process meets the quality requirements.
[0082] In this embodiment, when the flocculation liquid leaves the ammonia water section tubular reactor 14 after the precipitation reaction, if it is excessive ammonia water, the excessive ammonia water is removed by adding acid to solve the peptization problem, so that the quality of the flocculation liquid reaching the next process meets the requirements; if there are still unprecipitated rare earth ions, they will be returned to the ammonia water section tubular reactor 14 for continuous reaction to ensure that the quality of the flocculation liquid reaching the next process meets the requirements.
[0083] Thus, although an alarm is also issued when an abnormality occurs, production is not stopped.
[0084] M3, in the production stage: the third potential sensor 3 continues to send the third potential sensor second real-time potential value to the server, which is denoted as V3"", and the server receives the third potential sensor second real-time potential value, and the server sets X3" = V3""-V3.
[0085] If the absolute value of X3" is within the threshold value, it means that the ammonia water after the ammonia water section reaction meets the quality requirements, the abnormality ends, and the reaction reaches equilibrium in the new state.
[0086] If the production abnormality is caused by excessive ammonia water, a command to stop adding is sent to the acid liquid drop execution mechanism 23, the acid liquid drop execution mechanism 23 stops adding acid after receiving the command, if the rare earth ions are not completely precipitated, a command to open is sent to the third valve execution mechanism 21 and a command to close is sent to the fourth valve execution mechanism 22, the third valve execution mechanism 21 executes the command after receiving the command, and the fourth valve execution mechanism 22 executes the command after receiving the command.
[0087] If the absolute value of X3" is outside the threshold, in the case of adjusting the ammonia water drop speed, if X3" is positive, the server sends the ammonia water drop speed actuator 20 to increase the hydrogen peroxide drop speed instruction, sends the third valve actuator 21 to close the instruction, sends the fourth valve actuator 22 to open the instruction, and sends the acid liquid drop actuator 23 to stop the instruction; if X3" is negative, the server sends the ammonia water drop speed actuator 20 to further adjust the ammonia water drop speed instruction.
[0088] In the case of adjusting the ammonia water drop speed, if X3" is positive, the server sends the ammonia water drop speed actuator 20 to continue to adjust the ammonia water drop speed instruction; if X3" is negative, the server sends the ammonia water drop speed actuator 20 to adjust the hydrogen peroxide drop speed instruction, the server sends the third valve actuator 21 to open the instruction, sends the fourth valve actuator 22 to close the instruction, and sends the acid liquid drop actuator 23 to drop the acid liquid drop instruction.
[0089] Repeat this step until X3" is within the threshold, and resume normal production under the new balance, at this time, the third valve is in the open state, the fourth valve is in the closed state, and the acid liquid dropper is in the closed state.
[0090] Further, in order to shorten the abnormal time, when the liquid returns to the hydrogen peroxide section of the pipe reactor 11 due to insufficient hydrogen peroxide, the adjustment amplitude of the hydrogen peroxide drop speed actuator 10 adjusting the hydrogen peroxide drop speed should consider the amount of hydrogen peroxide needed to be added by the returned part of the liquid and the absolute value of X2, the larger the absolute value of X2, the higher the adjustment amplitude, and the two are positively correlated; when there is excessive hydrogen peroxide, the adjustment amplitude of the hydrogen peroxide drop speed actuator 10 adjusting the hydrogen peroxide drop speed should consider the size of X2, and X2 is positively correlated with the adjustment amplitude.
[0091] When the ammonia water section of the pipe reactor 14 is caused by insufficient ammonia water, the adjustment amplitude of the ammonia water drop speed actuator 20 adjusting the ammonia water drop speed should consider the amount of ammonia water needed to be added by the returned part of the liquid and the absolute value of X3, the larger the absolute value of X3, the higher the adjustment amplitude, and the two are positively correlated; when there is excessive ammonia water, the adjustment amplitude of the ammonia water drop speed actuator 20 adjusting the hydrogen peroxide drop speed should consider the size of X3, and X3 is positively correlated with the adjustment amplitude.
[0092] Example 3
[0093] Although example 2 can not only issue an alarm, but also continue production without stopping production when an abnormal situation occurs, and restore a new balance through automatic control, example 2 still has the disadvantage that the potential sensor cannot accurately reflect the excess of ammonia water, leading to insufficient gel dissolution.
[0094] Based on example 2, please refer to Fig. 2 .
[0095] In the ammonia water section intelligent control method:
[0096] M1, in the calibration stage: the server receives the set target pH value after the ammonia water section reaction, and the target pH value is denoted as Q. Q = 7.
[0097] M2, in the production stage: the pH sensor 4 sends the first real-time pH value to the server, the server receives the first real-time pH value, the first real-time pH value is denoted as Q'', when the absolute value of X3 is within the threshold value, the server sets Y = Q''-Q, if Y is within the threshold value, it indicates that the ammonia water section mixed mixture meets the quality requirements, the ammonia water drop speed matches the ammonia water section reaction, and the production continues. If Y is outside the threshold value, it indicates that the ammonia water drop speed is too fast, and the flocculation liquid exists the peptization phenomenon due to the excess ammonia water, the server sends the instruction of lowering the ammonia water drop speed to the ammonia water drop speed executing mechanism 20, and simultaneously sends the instruction of adding acid to the acid liquid drop adding executing mechanism 23, the acid liquid drop adding executing mechanism 23 receives the instruction and executes the instruction, so as to ensure that the product reaching the next process meets the quality requirements.
[0098] In the production stage: the pH sensor 4 continues to send the second real-time pH value to the server, the server receives the second real-time pH value, and the second real-time pH value is denoted as Q''', when the absolute value of X3 is within the threshold value, the server sets Y'' = Q'''-Q, if Y'' is within the threshold value, the server sends the instruction of stopping adding acid to the acid liquid drop adding executing mechanism 23, the acid liquid drop adding executing mechanism 23 receives the instruction and executes the instruction, if Y'' is outside the threshold value, the server continues to send the instruction of lowering the ammonia water drop speed to the acid liquid drop adding executing mechanism 23, until Y'' is within the threshold value. When the absolute value of X3 is outside the threshold value, the operation of the absolute value of X3 being outside the threshold value is executed.
[0099] By comparing the real-time pH value with the target pH value when the absolute value of X3 is within the threshold value, the peptization phenomenon caused by the excess ammonia water due to the misjudgment of the ammonia water drop speed matching according to the electric potential is avoided.
[0100] As known by those skilled in the art, when the absolute value of X3 is within the threshold value, Q'' is at least greater than Q, so Y cannot be negative.
[0101] The pH sensor 4 is used for detecting the pH value of the mixed solution after the ammonia water section reaction.
[0102] In the present application, in order to improve the detection accuracy, the first electric potential sensor 1 is installed at the intersection of the hydrogen peroxide section pipe reactor 11 and the trivalent Ce ion solution feeding pipe 12, the second electric potential sensor 2 is installed at the intersection of the hydrogen peroxide section pipe reactor 11 and the intermediate discharge pipe 13, the third electric potential sensor 3 is installed at the intersection of the ammonia water section pipe reactor 14 and the discharge pipe 15, and the pH sensor 4 is installed at the intersection of the ammonia water section pipe reactor 14 and the discharge pipe 15.
[0103] The application further provides an electronic device, which comprises a memory, a processor, and a computer program stored in the memory and capable of running on the processor, and the processor implements the steps of the intelligent control method for continuous production of the ammonium ceric nitrate precipitation process when executing the program.
[0104] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.
Claims
1. An intelligent control method for the continuous production of a cerium ammonium nitrate precipitation process, characterized by, The intelligent control method comprises an intelligent hydrogen peroxide section control method and an intelligent ammonia water section control method. The intelligent hydrogen peroxide section control method comprises the following steps. S1, the server receives a set hydrogen peroxide section post-reaction site target potential value, denoted as V2. S2, the second potential sensor sends a first real-time potential value of the second potential sensor to the server, and the server receives the first real-time potential value of the second potential sensor, denoted as V2''; the server calculates X2 = V2''-V2, if the absolute value of X2 is within a threshold value, the production continues, if the absolute value of X2 is outside the threshold value, an alarm instruction is outputted. The intelligent ammonia water section control method comprises the following steps. M1, the server receives a set ammonia water section post-reaction site target potential value, denoted as V3. M2, the third potential sensor sends a first real-time potential value of the third potential sensor to the server, and the server receives the first real-time potential value of the third potential sensor, denoted as V3'', the server calculates X3 = V3''-V3, if the absolute value of X3 is within a threshold value, the production continues, if the absolute value of X3 is outside the threshold value, an alarm instruction is outputted. The intelligent hydrogen peroxide section control method further comprises the following steps. S3, when the absolute value of X2 is outside the threshold value, if X2 is positive, the server sends a hydrogen peroxide drop speed adjustment instruction to a hydrogen peroxide drop speed execution mechanism, and simultaneously sends a heating instruction to a heater execution mechanism of a liquid storage opening tank installed on an intermediate discharge pipe; the hydrogen peroxide drop speed execution mechanism executes the hydrogen peroxide drop speed adjustment instruction after receiving the instruction, and the heater execution mechanism executes the heating instruction after receiving the instruction; if X2 is negative, the server sends a hydrogen peroxide drop speed adjustment instruction to a hydrogen peroxide drop speed execution mechanism, and simultaneously sends a closing instruction to a first valve execution mechanism installed on an intermediate discharge pipe, and sends an opening instruction to a second valve execution mechanism installed on a first reflux pipe; the first valve execution mechanism executes the instruction after receiving the instruction, the second valve execution mechanism executes the instruction after receiving the instruction, and the hydrogen peroxide drop speed execution mechanism executes the hydrogen peroxide drop speed adjustment instruction after receiving the instruction. S4, the second potential sensor continues to send the second real-time potential value of the second potential sensor to the server, the second real-time potential value of the second potential sensor is recorded as V2"", the server receives the second real-time potential value of the second potential sensor, the server makes X2"= V2""-V2; if the absolute value of X2" is within the threshold value, if it is a production abnormality caused by X2 being positive, a heating implement mechanism is sent a heating-off instruction, after the implement mechanism receives the instruction, the heating implement mechanism turns off the heating, if it is a production abnormality caused by X2 being negative, a first valve implement mechanism is sent an opening instruction, and a second valve implement mechanism is sent a closing instruction, after the first valve implement mechanism receives the instruction, the first valve implement mechanism executes the instruction, and after the second valve implement mechanism receives the instruction, the second valve implement mechanism executes the instruction; if the absolute value of X2" is outside the threshold value, under the condition of lowering the hydrogen peroxide drop speed, if X2" is positive, the server sends a further hydrogen peroxide drop speed lowering instruction to the hydrogen peroxide drop speed implement mechanism; if X2" is negative, the server sends a hydrogen peroxide drop speed increasing instruction to the hydrogen peroxide drop speed implement mechanism, a closing instruction to the first valve implement mechanism, an opening instruction to the second valve implement mechanism, and a heating-off instruction to the heating implement mechanism; under the condition of increasing the hydrogen peroxide drop speed, if X2" is positive, the server sends a hydrogen peroxide drop speed lowering instruction to the hydrogen peroxide drop speed implement mechanism, an opening instruction to the first valve implement mechanism, a closing instruction to the second valve implement mechanism, and a heating-on instruction to the heating implement mechanism; if X2" is negative, the server sends a further hydrogen peroxide drop speed increasing instruction to the hydrogen peroxide drop speed implement mechanism; S4 is repeated until X2" is within the threshold value, and normal production is resumed under a new balance, at this time, the first valve is in an open state, the second valve is in a closed state, and the heater is in an off state.
2. The method of claim 1, wherein the method is characterized by: The second potential sensor is used to detect the potential of the mixed solution after the hydrogen peroxide section reaction, and the third potential sensor is used to detect the potential of the mixed solution after the ammonia water section reaction.
3. The intelligent control method for continuous production of cerium ammonium nitrate precipitation process according to claim 1, characterized in that, In S1, the server also receives a set hydrogen peroxide section pre-reaction site target potential value, which is recorded as V1; in S2, the first potential sensor sends a first potential sensor real-time potential value to the server, which is recorded as V1", and the server makes X1= V1"-V1; if the absolute value of X1 is within the threshold value, production continues, and if the absolute value of X1 is outside the threshold value, an alarm instruction is output.
4. The method as claimed in claim 1, wherein the said method is a continuous process for the production of cerium ammonium nitrate precipitate, characterized in that, When the liquid returns to the hydrogen peroxide section tubular reactor due to insufficient hydrogen peroxide, the increasing amplitude of the hydrogen peroxide drop speed implement mechanism for increasing the hydrogen peroxide drop speed is positively correlated with the amount of hydrogen peroxide required to be added to the returned part of the liquid and the absolute value of X2; when there is excessive hydrogen peroxide, the decreasing amplitude of the hydrogen peroxide drop speed implement mechanism for decreasing the hydrogen peroxide drop speed is positively correlated with X2.
5. The method as claimed in claim 1, wherein the said method is a continuous process for the production of cerium ammonium nitrate precipitate, characterized in that, In M2, when the absolute value of X3 is outside the threshold, if X3 is positive, the server sends an instruction to increase the ammonia water drop speed to the ammonia water drop speed execution mechanism, and at the same time, the server also sends a closing instruction to the third valve execution mechanism installed on the discharge pipe, an opening instruction to the fourth valve execution mechanism installed on the second reflux pipe, the third valve execution mechanism receives the instruction and executes it, the fourth valve execution mechanism receives the instruction and executes it, and the ammonia water drop speed execution mechanism receives the instruction and executes the instruction to increase the ammonia water drop speed; if X3 is negative, the server sends an instruction to lower the ammonia water drop speed to the ammonia water drop speed execution mechanism, and at the same time, the server sends an acid adding instruction to the acid liquid drop adding execution mechanism installed on the discharge pipe, the acid liquid drop adding execution mechanism receives the instruction and executes it; The ammonia water section intelligent control method further includes the following steps: M3, the third potential sensor continues to send the second real-time potential value of the third potential sensor to the server, the second real-time potential value of the third potential sensor is denoted as V3"", the server receives the second real-time potential value of the third potential sensor, and the server sets X3" = V3""-V3; if the absolute value of X3" is within the threshold, the abnormality ends, and the reaction reaches a new balance; if the production abnormality is caused by excessive ammonia water, a closing drop adding instruction is sent to the acid liquid drop adding execution mechanism, the acid liquid drop adding execution mechanism receives the instruction and stops the acid liquid drop adding, if the rare earth ions are not completely precipitated, an opening instruction is sent to the third valve execution mechanism and a closing instruction is sent to the fourth valve execution mechanism, the third valve execution mechanism receives the instruction and executes it, the fourth valve execution mechanism receives the instruction and executes it; if the absolute value of X3" is outside the threshold, in the case of lowering the ammonia water drop speed, if X3" is positive, the server sends an instruction to increase the hydrogen peroxide drop speed to the ammonia water drop speed execution mechanism, sends a closing instruction to the third valve execution mechanism, sends an opening instruction to the fourth valve execution mechanism, and sends a stop instruction to the acid liquid drop adding execution mechanism; if X3" is negative, the server sends a further instruction to lower the ammonia water drop speed to the ammonia water drop speed execution mechanism; in the case of increasing the ammonia water drop speed, if X3" is positive, the server sends a continuous instruction to increase the ammonia water drop speed to the ammonia water drop speed execution mechanism; if X3" is negative, the server sends an instruction to lower the hydrogen peroxide drop speed to the ammonia water drop speed execution mechanism, sends an opening instruction to the third valve execution mechanism, sends a closing instruction to the fourth valve execution mechanism, and sends an acid liquid drop adding instruction to the acid liquid drop adding execution mechanism; M3 is repeated until X3" is within the threshold, and normal production is resumed under the new balance, at this time, the third valve is in an open state, the fourth valve is in a closed state, and the acid liquid drop adding device is in a closed state.
6. The method of claim 5, wherein the method is characterized by: When the ammonia water section pipe reactor is caused by insufficient ammonia water, the increase amplitude of the ammonia water drop speed execution mechanism for increasing the ammonia water drop speed is positively correlated with the amount of ammonia water required to be added to the returned part of the liquid and the absolute value of X3; when there is excessive ammonia water, the lowering amplitude of the ammonia water drop speed execution mechanism for lowering the hydrogen peroxide drop speed is positively correlated with X3.
7. The method of claim 5, wherein the method is characterized by: In M1, the server receives a set ammonia water section reaction target pH value, and the target pH value is denoted as Q; In M2, the pH sensor sends a first real-time pH value to the server, the server receives the first real-time pH value, the first real-time pH value is recorded as Q", when the absolute value of X3 is within the threshold value, the server sets Y = Q"-Q, if Y is within the threshold value, the production continues; if Y is outside the threshold value, the server sends a command to lower the ammonia water drop speed to the ammonia water drop speed execution mechanism, and simultaneously sends a command to add acid to the acid liquid drop execution mechanism, after receiving the command, the acid liquid drop execution mechanism executes the command; The pH sensor continues to send a second real-time pH value to the server, the server receives the second real-time pH value, the second real-time pH value is recorded as Q"", when the absolute value of X3 is within the threshold value, the server sets Y" = Q""-Q, if Y" is within the threshold value, the server sends a command to stop adding acid to the acid liquid drop execution mechanism, after receiving the command, the acid liquid drop execution mechanism executes the command, if Y" is outside the threshold value, the server continues to send a command to lower the ammonia water drop speed to the acid liquid drop execution mechanism until Y" is within the threshold value; when the absolute value of X3 is outside the threshold value, the operation of the absolute value of X3 being outside the threshold value is performed.
8. The method of claim 1, wherein the method is characterized by: The second potential sensor is installed at the intersection of the hydrogen peroxide section pipe reactor and the intermediate discharge pipe, the third potential sensor is installed at the intersection of the ammonia water section pipe reactor and the discharge pipe, and the pH sensor is installed at the intersection of the ammonia water section pipe reactor and the discharge pipe.
9. An electronic device comprising a memory, a processor, and a computer program stored on the memory and executable on the processor, characterized in that, The processor executes the program to realize the steps of the intelligent control method for continuous production of the cerium ammonium nitrate precipitation process according to any one of claims 1 to 8.
Citation Information
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Method and device for automatic-control continuous production of dye
CN103160145A