WO2024021704A1

WO2024021704A1 - Dissolution temperature control method and apparatus, device, and storage medium

Info

Publication number: WO2024021704A1
Application number: PCT/CN2023/089987
Authority: WO
Inventors: 周益文; 陈首慧; 赵清杰; 张保伟; 吴军
Original assignee: 中国铝业股份有限公司
Priority date: 2022-07-25
Filing date: 2023-04-23
Publication date: 2024-02-01
Also published as: CN115145327A

Abstract

A dissolution temperature control method and apparatus, a device, and a storage medium. The control method comprises: determining an actual feed amount of dissolved slurry of a dissolution unit on the basis of a feed flow rate within a current target period (S101); when it is detected that the actual feed amount is greater than a first percentage of a rated feed amount and less than a second percentage of the rated feed amount, or when it is detected that the actual feed amount is greater than a third percentage of the rated feed amount and less than a fourth percentage of the rated feed amount, determining a steam flow rate of the dissolution unit within a next target period (S102); and then, controlling an actual steam flow rate of the dissolution unit within the next target period on the basis of the steam flow rate, so that the dissolution temperature within the next target period is within a preset range (S103). The control method effectively reduces the fluctuation of the dissolution temperature.

Description

A dissolution temperature control method, device, equipment and storage medium

Cross-references to related applications

This application claims priority from the Chinese patent application with application number 202210876847.0, filed on July 25, 2022, the entire content of which is incorporated herein by reference.

Technical field

The present disclosure belongs to the field of metallurgical technology and relates to a dissolution temperature control method, device, equipment and storage medium.

Background technique

Dissolution temperature is the most important factor in the dissolution process and directly affects the dissolution effect. Currently, in the alumina production process, the temperature control of the dissolution unit is mainly controlled manually by the operator. Since the feed amount, steam flow and other factors affect the dissolution temperature, in order to stabilize the dissolution temperature, the operator needs to pay attention to the unit parameters at all times and make frequent adjustments, which requires the operator to work intensively. This adjustment is easily affected by the working status of workers, and the dissolution temperature is prone to fluctuations, resulting in a low dissolution rate of alumina.

Contents of the invention

The present disclosure provides a dissolution temperature control method, device, equipment and storage medium. By utilizing one or more embodiments of the present disclosure, the existing manual process of manually controlling the dissolution temperature is solved, which suffers from large dissolution temperature fluctuations and low dissolution rate. The problem.

According to the first aspect of the present disclosure, a dissolution temperature control method is provided, which is applied to a dissolution unit. The method includes: obtaining the feed flow rate of the dissolution unit, and based on the feed flow rate within the current target period, Determine the actual feed amount of the dissolution slurry of the dissolution unit; when it is detected that the actual feed amount is greater than the first percentage of the rated feed amount and less than the second percentage of the rated feed amount , determine the steam flow rate of the dissolution unit in the next target period; or detect that the actual feed amount is greater than the third percentage of the rated feed amount and less than the fourth percent of the rated feed amount. percentage, determine the steam flow rate of the dissolution unit in the next target period; wherein the first percentage is less than the second percentage, and the second percentage is less than the third percentage, the third percentage is less than the fourth percentage; based on the steam flow rate, the actual steam flow rate of the dissolution unit in the next target period is controlled, so that the actual steam flow rate in the next target period is The dissolution temperature is within the preset range.

According to a second aspect of the present disclosure, a dissolution temperature control device is provided, which is applied to a dissolution unit. The device includes: a data acquisition unit for acquiring the feed flow rate of the dissolution unit, and based on the feed flow rate Within the current target period, determine the actual performance of the dissolution slurry produced by the dissolution unit. Feed amount; a data processing unit configured to determine that the actual feed amount is greater than the first percentage of the rated feed amount and less than the second percentage of the rated feed amount. The steam flow rate of the dissolution unit in the next target period; or when it is detected that the actual feed amount is greater than the third percentage of the rated feed amount and less than the fourth percentage of the rated feed amount, Determine the steam flow rate of the dissolution unit in the next target period; wherein the first percentage is less than the second percentage, the second percentage is less than the third percentage, so The third percentage is less than the fourth percentage; a control unit, configured to control the actual steam flow rate of the dissolution unit in the next target period based on the steam flow rate, so that the actual steam flow rate in the next target period is The dissolution temperature is within the preset range.

According to a third aspect of the present disclosure, a dissolution temperature control device is provided, including a memory, a processor, and code stored in the memory and executable on the processor. When the processor executes the code, the first aspect is implemented. any implementation.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, a brief introduction will be made below to the drawings needed to be used in the description of the embodiments. Obviously, the drawings in the following description are some embodiments of the present disclosure. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings without exerting creative efforts.

Figure 1 shows a flow chart of a dissolution temperature control method according to some embodiments of the present disclosure.

Figure 2 shows a schematic diagram of the structure of a dissolution temperature control device according to some embodiments of the present disclosure.

Figure 3 shows a schematic diagram of the structure of a dissolution temperature control device according to some embodiments of the present disclosure.

Figure 4 shows a schematic diagram of the structure of a computer-readable storage medium according to some embodiments of the present disclosure.

Detailed ways

The present disclosure provides a dissolution temperature control method, device, equipment and storage medium. By utilizing one or more embodiments of the present disclosure, the existing manual process of manually controlling the dissolution temperature is solved, which suffers from large dissolution temperature fluctuations and low dissolution rate. technical issues.

The technical solutions provided by the embodiments of the present disclosure are to solve the above technical problems. The general idea is as follows:

First, obtain the feed flow rate of the dissolution unit, and determine the actual feed amount of the dissolution slurry of the dissolution unit based on the feed flow rate within the current target period.

Then, when it is detected that the actual feed amount is greater than the first percentage of the rated feed amount and less than the second percentage of the rated feed amount, or when it is detected that the actual feed amount is greater than the third percentage of the rated feed amount, percentage and less than the fourth percentage of the rated feed amount, based on the adjustment interval of the steam valve of the dissolution unit, the grade value of the dissolution temperature deviation and the grade value of the dissolution temperature deviation change rate, determine the next step of the dissolution unit Steam flow rate during target period.

Finally, the actual steam flow rate of the dissolution unit in the next target period is controlled based on the steam flow rate, so that the dissolution temperature in the next target period is within the preset range, effectively reducing the fluctuation of the dissolution temperature. move.

In order to better understand the above technical solution, the above technical solution will be described in detail below with reference to the accompanying drawings and implementation modes of the description.

First of all, it should be noted that the term "and/or" appearing in this article is only an association relationship describing related objects, indicating that there can be three relationships. For example, A and/or B can mean: A exists alone, and A exists at the same time. and B, there are three cases of B alone. The character "/" in this article generally indicates that the related objects are an "or" relationship.

It should be noted that the terms "first", "second", etc. in the description and claims of the present disclosure and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It is to be understood that the data so used are interchangeable under appropriate circumstances so that the embodiments of the disclosure described herein can be practiced in sequences other than those illustrated or described herein.

According to the first aspect of the present disclosure, through some embodiments of the present disclosure, a dissolution temperature control method is provided, which can be applied to a dissolution unit, such as an alumina dissolution unit.

Referring to Figure 1, the dissolution temperature control method may include the following steps S101 to S103.

Step S101: Obtain the feed flow rate of the dissolution unit, and determine the actual feed amount of the dissolution slurry of the dissolution unit based on the feed flow rate within the current target period.

The target cycle can be set according to the actual application scenario. The longer the target cycle, the more accurate the actual feed amount determined.

During the implementation process, the ratio of the feed flow rate of the dissolution unit to the target cycle can be used to determine the actual feed amount of the dissolution slurry to the dissolution unit.

Step S102: When it is detected that the actual feed amount is greater than the first percentage of the rated feed amount and less than the second percentage of the rated feed amount, or when it is detected that the actual feed amount is greater than the rated feed amount. When the ratio is three percent and less than the fourth percent of the rated feed amount, determine the steam flow rate of the dissolution unit in the next target cycle.

Wherein, the first percentage is less than the second percentage, the second percentage is less than the third percentage, and the third percentage is less than the fourth percentage. The rated feed volume is generally determined by the performance specifications of the dissolution unit. The first percentage, the second percentage, the third percentage and the fourth percentage can all be set according to the actual situation. Of course, the first percentage, the second percentage can also be determined based on multiple dissolution experiments. ratio, third percentile, and fourth percentile.

In some embodiments, the second percentage is less than 100%, the third percentage is greater than 100%, and the absolute value of the difference between the two and 100% is equal. When the actual feed amount is greater than the first percentage of the rated feed amount and less than the second percentage of the rated feed amount, or the actual feed amount is greater than the third percentage of the rated feed amount and less than the rated feed amount, At the fourth percentage of the material amount, the actual feed amount deviates greatly from the rated feed amount. In this case, the dissolution temperature of the dissolution unit can be controlled by controlling the steam flow rate in a smaller range. , not only effectively reduces the fluctuation of dissolution temperature, but also ensures the output of alumina; when the actual feed amount is greater than the second percentage of the rated feed amount and less than the rated feed amount, At the third percentage, the deviation between the actual feed amount and the rated feed amount is small. At this time, the steam flow is not adjusted, but the dissolution temperature is controlled by controlling the actual feed amount, making the steam flow more stable.

In some optional implementations, the first percentage may be 75%, the second percentage may be 90%, the third percentage may be 110%, and the fourth percentage may be 125%.

Before determining the steam flow rate of the dissolution unit in the next target period, you can also perform the following steps A1 to A3.

A1: Obtain the actual dissolution temperature of the dissolution unit within the current target period, and determine the dissolution temperature deviation based on the difference between the actual dissolution temperature and the preset dissolution temperature.

In some embodiments, the dissolution unit can be provided with n heating sections, and each heating section will collect temperature data m times during the target period, where n and m are both positive integers greater than 1.

In order to avoid inaccurate actual dissolution temperatures due to abnormal temperature sensors, you can first obtain the first average temperature value of the temperature data collected m times for each heating section, and obtain the first average temperature value of the temperature data collected m times for n heating sections. 2. Average temperature value.

For example, if the temperature data collected for the jth time in the i-th heating section is Tij (i=1, 2..., n, j=1, 2..., m), Then the first average temperature value of the i-th heating section in the current target period t1 can be calculated using the following formula: Ti(t1)av=sum(Tij)/m and j=1, 2..., m, where i is the number of the heating section, t1 is the current target period, Ti(t1)av is the first average temperature value of the i-th heating section in the current target period t1, and sum(Tij) is the i-th The sum of temperature data collected m times in the heating section, where m is the number of collections.

Correspondingly, the second average temperature value can be calculated using the following formula: In the formula, T(t1)av is the second average temperature value of n heating sections in the current target period t1, is the sum of temperature data collected m times by n heating sections, n is the number of heating sections, and m is the number of collections.

For each heating section, if the difference between the corresponding first average temperature value and the second average temperature value is greater than the preset deviation threshold, the first average temperature value corresponding to the heating section is discarded, otherwise the third average temperature value corresponding to the heating section is discarded. An average temperature value is retained, so that the difference between the first average temperature value and the second average temperature value corresponding to each heating section is smaller, and the final calculated actual dissolution temperature is more accurate.

The preset deviation threshold can be set according to actual requirements. The smaller the preset deviation threshold, the more accurate the final calculated actual dissolution temperature will be.

Finally, based on the first average temperature value corresponding to the retained heating section, the actual dissolution temperature of the dissolution unit is determined.

For example, if the first average temperature value corresponding to the i-th heating section is discarded, then the actual dissolution temperature of the dissolution unit can be calculated according to the following formula: Tk1={sum[T(i-1)(t1)av] +sum[T(ni)(t1)av]}/[(n-1)×m], where Tk1 is the average dissolution temperature of the dissolution unit degree, that is, the actual dissolution temperature, sum[T(i-1)(t1)av] is the sum of the first average temperature values corresponding to the first i-1 heating sections in the current target period t1, sum[T(ni)( t1)av] is the sum of the first average temperature values corresponding to the last ni heating sections in the current target period t1.

It should be noted that when the first average temperature values corresponding to all heating sections are less than or equal to the preset deviation threshold, the average dissolution temperature of the dissolution unit is equal to the above-mentioned second average temperature value.

Among them, the preset dissolution temperature can be set according to the actual situation, and the dissolution temperature deviation can be calculated using the following formula: T(t1)ev=Tk1-T(t1)sv, where T(t1)ev is the current target period t1 The dissolution temperature deviation within the period, Tk1 is the actual dissolution temperature, and T(t1)sv is the preset dissolution temperature in the current target period t1.

A2: Calculate the grade value of the dissolution temperature deviation using the preset variation range and domain interval for the dissolution temperature deviation.

In some embodiments, the scaling factor can be calculated using the variation range and domain interval of the dissolution temperature deviation. For example, the proportion factor can be calculated by using the ratio of the upper limit of the dissolution temperature deviation variation range to the upper limit of the universe of discussion. Among them, the proportion factor can be calculated using the following formula: k1=y/x, where k1 is the proportion factor, y is the upper limit of the dissolution temperature deviation domain, and x is the upper limit of the dissolution temperature deviation range. limit.

For example, if the variation range of the dissolution temperature deviation is [-6,6] and the domain of dissolution temperature deviation is {-2,2}, then the scale factor is 3.

In other embodiments, the series of the domain interval can also be set according to the domain interval of the dissolution temperature deviation, and the difference between two adjacent series of the domain interval can be used as the domain interval factor.

Continuing to take the domain interval of the dissolution temperature deviation as {-2,2} as an example, the domain interval series can be set to 5, at which time the domain interval becomes {-2,-1,0,1,2 }, then according to the difference between two adjacent series in the domain interval, it can be determined that the domain interval factor is 1.

In one embodiment, the grade value of the dissolution temperature deviation can be calculated according to the following formula: T(t1)Ev=T(t1)ev×k1/k2, where T(t1)Ev is the current target period t1 The level value of the dissolution temperature deviation within the period, T(t1)ev is the dissolution temperature deviation within the current target period t1, k1 is the scale factor, and k2 is the domain interval factor.

It should be noted that the level value of the dissolution temperature deviation can also be limited. In some embodiments, when the level value of the dissolution temperature deviation is greater than the upper limit of the domain of discussion, the upper limit of the domain of discussion is regarded as The grade value of the dissolution temperature deviation.

When the grade value of the dissolution temperature deviation is less than the lower limit of the universe of discussion, the lower limit of the universe of discourse is used as the grade value of the dissolution temperature deviation. When the grade value of the dissolution temperature deviation is within the universe of discussion, the grade value of the dissolution temperature deviation is rounded.

A3: Based on the difference between the dissolution temperature deviation in the previous target period and the dissolution temperature deviation in the current target period, determine the dissolution temperature deviation change rate, and use the preset change range and theory for the dissolution temperature deviation change rate. domain interval, and calculate the grade value of the dissolution temperature deviation change rate.

For example, the dissolution temperature deviation change rate can be calculated using the following formula: T(t1)evc=T(t1)ev-T(t1-1)ev, where T(t1)evc is the current target period t1 The rate of change of dissolution temperature deviation, T(t1)ev is the dissolution temperature deviation in the current target period t1, and T(t1-1)ev is the dissolution temperature deviation in the previous target period t1-1.

In some embodiments, the ratio factor can be calculated using the variation range of the dissolution temperature deviation change rate and the domain of discourse interval. For example, the ratio factor can be calculated by using the ratio of the upper limit of the range of the dissolution temperature deviation change rate to the upper limit of the universe of discussion. Among them, the ratio factor can be calculated using the following formula: K3=b/a, where k3 is the ratio factor, b is the upper limit of the dissolution temperature deviation change rate domain interval, and a is the dissolution temperature deviation change rate change range. upper limit value.

For example, if the change range of the dissolution temperature deviation change rate is [-4,4] and the domain of dissolution temperature deviation is {-2,2}, then the ratio factor is 0.5.

In some embodiments, the value of the dissolution temperature deviation change rate can also be processed. For example, when the dissolution temperature deviation change rate is less than the lower limit of the dissolution temperature deviation change rate, the dissolution temperature deviation change rate will be The lower limit of the change range is taken as the dissolution temperature deviation change rate; when the dissolution temperature deviation change rate is greater than the upper limit of the change range of the dissolution temperature deviation change rate, the upper limit of the change range of the dissolution temperature deviation change rate is taken as Dissolution temperature deviation change rate; when the dissolution temperature deviation change rate is within the change range of the dissolution temperature deviation change rate, the dissolution temperature deviation change rate will not be processed.

In some embodiments, the grade value of the dissolution temperature deviation change rate can be calculated according to the following formula: T(t1)Evc=T(t1)evc×k3, where T(t1)Evc is the value within the current target period t1 The grade value of the dissolution temperature deviation change rate, T(t1)evc is the dissolution temperature deviation change rate within the current target period t1, and k3 is the ratio factor.

Finally, the range of the grade value of the dissolution temperature deviation change rate can also be limited. When the grade value of the dissolution temperature deviation change rate is greater than the upper limit of the domain interval of the dissolution temperature deviation change rate, the domain of the dissolution temperature deviation change rate will be The upper limit of the interval is used as the grade value of the dissolution temperature deviation change rate. And, when the grade value of the dissolution temperature deviation change rate is less than the lower limit of the universe interval of the dissolution temperature deviation change rate, the lower limit of the universe interval of the dissolution temperature deviation change rate is used as the grade value of the dissolution temperature deviation change rate. ; When the grade value of the dissolution temperature deviation change rate is within the universe of discussion of the dissolution temperature deviation change rate, round the grade value of the dissolution temperature deviation change rate.

By limiting the grade value of the dissolution temperature deviation, the grade value of the dissolution temperature deviation change rate and the dissolution temperature deviation change rate, the fluctuation range of the grade value and change rate is reduced, thereby avoiding the calculation of the next target period The steam flow rate in the system fluctuates too much, causing the dissolution temperature to fluctuate too much.

At this point, the steam flow rate in the next target period can be calculated based on the adjustment interval of the steam valve of the dissolution unit, the level value of the dissolution temperature deviation, and the level value of the dissolution temperature deviation change rate.

In an optional implementation, the steam flow rate can be calculated using the following formula: Vc(t1+1)=(d+e)/2+(e-d)×T(t1)Ev×T(t1)Evc/ (y×b), where Vc(t1+1) is the steam flow rate in the next target period t1+1, d is the lower limit of the adjustment interval of the steam valve of the dissolution unit, and e is the steam valve of the dissolution unit The upper limit of the adjustment interval, T(t1)Ev is the level value of the dissolution temperature deviation in the current target period t1, T(t1)Evc is the level value of the dissolution temperature deviation change rate in the current target period t1, y is the upper limit of the domain interval of the dissolution temperature deviation, and b is the upper limit of the domain interval of the dissolution temperature deviation change rate.

Step S103: Control the actual steam flow rate of the dissolution unit in the next target period based on the steam flow rate, so that the dissolution temperature in the next target period is within the preset range.

In some embodiments, the opening of the steam valve can be controlled based on the steam flow rate in the next target period, thereby changing the actual steam flow rate of the dissolution unit in the next target period, and thereby changing the actual dissolution temperature of the dissolution unit in the next target period. .

Different from the above steps, when it is detected that the actual feed amount is greater than the second percentage of the rated feed amount and less than the third percentage of the rated feed amount, the target of the dissolution unit in the next target cycle is determined. Feed volume, based on the target feed volume, controls the actual feed volume of the dissolution unit in the next target cycle.

Before determining the target feed amount of the dissolution unit in the next target cycle, the above steps A1 to A3 need to be performed. For the sake of simplicity in the description, they will not be repeated here.

Among them, the target feed amount in the next target period can be calculated based on the adjustment interval of the feed amount of the dissolution unit, the grade value of the dissolution temperature deviation, and the grade value of the dissolution temperature deviation change rate.

In an optional implementation, the target feed amount can be calculated using the following formula: Fc(t1+1)=(g+h)/2+(h-g)×T(t1)Ev×T(t1) Evc/(b×y), where Fc(t1+1) is the target feed amount in the next target period t1+1, g is the lower limit of the adjustment interval for the feed amount of the dissolution unit, h is The upper limit of the adjustment interval for the feed amount of the dissolution unit. T(t1)Ev is the level value of the dissolution temperature deviation in the current target period t1. T(t1)Evc is the dissolution temperature deviation change in the current target period t1. The grade value of the rate, y is the upper limit of the domain interval of the dissolution temperature deviation, and b is the upper limit of the domain interval of the dissolution temperature deviation change rate.

As an optional implementation, in order to ensure the normal operation of the dissolution unit, when it is detected that the actual feed amount is less than the first percentage of the rated feed amount, or it is detected that the actual feed amount is greater than the rated feed amount by a third At four percent, an alarm message is issued to allow the operator to take manual control.

According to the second aspect of the present disclosure, based on the same concept, through some embodiments of the present disclosure, a dissolution temperature control device is provided, which can be applied to a dissolution unit. The device includes:

The data acquisition unit 201 is used to obtain the feed flow rate of the dissolution unit, and determine the actual feed amount of the dissolution slurry of the dissolution unit within the current target period based on the feed flow rate.

The data processing unit 202 is configured to detect that the actual feed amount is greater than the first percentage of the rated feed amount and less than the second percentage of the rated feed amount, or when it is detected that the actual feed amount is greater than the rated feed amount. When the third percentage of the material amount is less than the fourth percentage of the rated feed amount, it is determined that the dissolution unit is The steam flow rate within a target period, wherein the first percentage is less than the second percentage, the second percentage is less than the third percentage, and the third percentage is less than the fourth percentage.

The control unit 203 is used to control the actual steam flow rate of the dissolution unit in the next target period based on the steam flow rate, so that the dissolution temperature in the next target period is within a preset range.

As an optional implementation, the data processing unit 202 is also configured to: when detecting that the actual feed amount is greater than the second percentage of the rated feed amount and less than the third percentage of the rated feed amount, Determine the target feed volume of the dissolution unit in the next target cycle.

As an optional implementation, the control unit 203 is also used to: control the actual feed amount of the dissolution unit in the next target cycle based on the target feed amount.

As an optional implementation, the dissolution temperature control device also includes: a temperature deviation evaluation unit 204, used to obtain the actual dissolution temperature of the dissolution unit within the current target period, and calculate the actual dissolution temperature based on the actual dissolution temperature and the preset dissolution temperature. Difference, determine the dissolution temperature deviation; use the preset change range and domain interval for the dissolution temperature deviation, calculate the level value of the dissolution temperature deviation; based on the dissolution temperature deviation in the previous target period and the current target The difference in the dissolution temperature deviation amount within the period is used to determine the dissolution temperature deviation change rate, and the grade value of the dissolution temperature deviation change rate is calculated using the change range and domain interval preset for the dissolution temperature deviation change rate.

As an optional implementation, the data processing unit 202 is also used to calculate the next target based on the adjustment interval of the steam valve of the dissolution unit, the grade value of the dissolution temperature deviation, and the grade value of the dissolution temperature deviation change rate. The steam flow rate within the cycle; or based on the adjustment interval of the dissolution unit's feed amount, the grade value of the dissolution temperature deviation, and the grade value of the dissolution temperature deviation change rate, calculate the target feed amount in the next target cycle.

As an optional implementation, the dissolution unit is provided with n heating sections, and each heating section collects temperature data m times during the target period. The temperature deviation evaluation unit 204 is also used to: obtain m times of temperature data for each heating section. The first average temperature value of the temperature data collected, and the second average temperature value of the temperature data collected m times for n heating sections, where n and m are both positive integers greater than 1; for each heating section, if the corresponding The difference between the first average temperature value and the second average temperature value is greater than the preset deviation threshold, then the first average temperature value corresponding to the heating section is discarded; based on the first average temperature value corresponding to the retained heating section, determine The actual dissolution temperature of the dissolution unit.

As an optional implementation, the data processing unit 202 is also configured to: detect that the actual feed amount is less than the first percentage of the rated feed amount, or detect that the actual feed amount is greater than the rated feed amount. At the fourth percentile, an alarm message is issued.

Since the dissolution temperature control device introduced in this embodiment is an electronic device used to implement the dissolution temperature control method in the embodiment of the disclosure, based on the dissolution temperature control method introduced in the embodiment of the disclosure, those skilled in the art can To understand the implementation of the electronic device of this embodiment and its various modifications, how the electronic device implements the method in the disclosed embodiment will not be described in detail here. As long as those skilled in the art implement the dissolution temperature control method in the embodiments of the present disclosure, the electronic equipment used will fall within the scope of protection of the present disclosure.

According to the third aspect of the present disclosure, based on the same concept, an embodiment of the present disclosure provides a dissolution temperature control device, which can be applied to a dissolution unit.

Referring to Figure 3, the dissolution temperature control device provided by the embodiment of the present disclosure includes: a memory 301, a processor 302, and code stored in the memory and executable on the processor 302. The processor 302 implements the foregoing when executing the code. Any embodiment of the dissolution temperature control method.

Among them, in Figure 3, the bus architecture (represented by bus 300), the bus 300 can include any number of interconnected buses and bridges, the bus 300 will include one or more processors represented by the processor 302 and the memory 301. The various circuits of memory are linked together. Bus 300 may also link together various other circuits such as peripherals, voltage regulators, and power management circuits, which are well known in the art and therefore will not be described herein. Bus interface 305 provides an interface between bus 300 and receiver 303 and transmitter 304. The receiver 303 and the transmitter 304 may be the same element, a transceiver, providing a unit for communicating with various other devices over a transmission medium. The processor 302 is responsible for managing the bus 300 and general processing, while the memory 301 may be used to store data used by the processor 302 in performing operations.

According to the fourth aspect of the present disclosure, as shown in Figure 4, based on the same concept, through some embodiments of the present disclosure, a computer-readable storage medium 400 is provided, with a computer program 401 stored thereon, and the computer program 401 is When the processor is executed, any one of the foregoing dissolution temperature control methods is implemented.

The technical solutions in the above embodiments of the present disclosure have at least the following technical effects or advantages:

By obtaining the feed flow rate of the dissolution unit, and based on the feed flow rate in the current target period, the actual feed amount of the dissolution slurry of the dissolution unit is determined, and then the first time it is detected that the actual feed amount is greater than the rated feed amount percentage and less than the second percentage of the rated feed amount, or when it is detected that the actual feed amount is greater than the third percentage of the rated feed amount and less than the fourth percentage of the rated feed amount, Based on the adjustment range of the steam valve of the dissolution unit, the level value of the dissolution temperature deviation, and the level value of the dissolution temperature deviation change rate, determine the steam flow rate of the dissolution unit in the next target period. Finally, the actual steam flow of the dissolution unit in the next target period is controlled based on the steam flow, so that the dissolution temperature in the next target period is within the preset range, thereby effectively reducing the fluctuation of the dissolution temperature. The dissolution temperature control method provided by the embodiments of the present disclosure has the technical effects of simple control, automatic control of the dissolution temperature, and small fluctuation range of the dissolution temperature.

Or based on the adjustment interval of the feed amount of the dissolution unit, the grade value of the dissolution temperature deviation, and the grade value of the dissolution temperature deviation change rate, calculate the target feed amount in the next target period, and control the dissolution based on the target feed amount The actual feed amount of the unit in the next target period also makes the dissolution temperature in the next target period within the preset range, thereby effectively reducing the fluctuation of the dissolution temperature.

One or more technical solutions provided in the embodiments of the present disclosure have at least the following technical effects or advantages: first, obtain the feed flow rate of the dissolution unit, and determine the dissolution slurry of the dissolution unit based on the feed flow rate within the current target period. The actual feed amount can be detected when the actual feed amount is greater than the first percentage of the rated feed amount and less than the second percentage of the rated feed amount, or when the actual feed amount is detected. When the actual feed amount is greater than the third percentage of the rated feed amount and less than the fourth percent of the rated feed amount, the adjustment interval of the steam valve of the dissolution unit, the grade value of the dissolution temperature deviation, and the dissolution temperature deviation are The grade value of the change rate determines the steam flow rate of the dissolution unit in the next target period. Finally, based on the steam flow rate, the actual steam flow rate of the dissolution unit in the next target period is controlled so that the dissolution temperature in the next target period is within the preset range. within, thus making the dissolution temperature fluctuation smaller.

Those skilled in the art will appreciate that embodiments of the present disclosure may be provided as methods, systems, or computer products. Accordingly, the present disclosure may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment that combines software and hardware aspects. Furthermore, the present disclosure may take the form of a computer product implemented on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) having computer-usable code embodied therein.

The present disclosure is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer products according to embodiments of the disclosure. It will be understood that each process and/or block in the flowchart illustrations and/or block diagrams, and combinations of processes and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer instructions. These computer instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing device to produce a machine such that the instructions executed by the processor of the computer or other programmable data processing device produce a machine for A device that implements the functions specified in a process or processes in a flowchart and/or in a block or blocks in a block diagram.

These computer instructions may also be stored in a computer-readable memory that causes a computer or other programmable data processing apparatus to operate in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means, the instruction means Implements the functionality specified in a process or processes in a flow diagram and/or in a block or blocks in a block diagram.

These computer instructions may also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on the computer or other programmable device to produce computer-implemented processes, thereby causing the instructions to execute on the computer or other programmable device Provides steps for implementing the functionality specified in a process or processes in a flow diagram and/or in a block or blocks in a block diagram.

Although the preferred embodiments of the present disclosure have been described, changes and modifications to these embodiments will occur to those skilled in the art once the basic inventive concepts are apparent. Therefore, it is intended that the appended claims be construed to include the preferred embodiments and all changes and modifications that fall within the scope of this disclosure.

Obviously, those skilled in the art can make various changes and modifications to the present disclosure without departing from the spirit and scope of the disclosure. In this way, if these modifications and variations of the present disclosure fall within the scope of the claims of the present disclosure and equivalent technologies, the present disclosure is also intended to include these modifications and variations.

Claims

A dissolution temperature control method, applied to a dissolution unit, the method includes:

Obtain the feed flow rate of the dissolution unit, and determine the actual feed amount of the dissolution slurry of the dissolution unit based on the feed flow rate within the current target period;

When it is detected that the actual feed amount is greater than the first percentage of the rated feed amount and less than the second percentage of the rated feed amount, determine the steam flow rate of the dissolution unit in the next target period. ;

Or when it is detected that the actual feed amount is greater than the third percentage of the rated feed amount and less than the fourth percentage of the rated feed amount, it is determined that the dissolution unit is within the next target period. steam flow rate;

Wherein, the first percentage is less than the second percentage, the second percentage is less than the third percentage, and the third percentage is less than the fourth percentage; as well as

Based on the steam flow rate, the actual steam flow rate of the dissolution unit in the next target period is controlled so that the dissolution temperature in the next target period is within a preset range.
The method of claim 1, wherein the second percentage is less than 100%, the third percentage is greater than 100%, and the absolute values of the differences between the two and 100% are equal.
The method of claim 2, further comprising:

When it is detected that the actual feed amount is greater than the second percentage of the rated feed amount and less than the third percentage of the rated feed amount, it is determined that the dissolution unit is at the next target The target feed amount within the cycle is used to control the actual feed amount of the dissolution unit in the next target cycle based on the target feed amount.
The method of claim 3, further comprising:

Obtain the actual dissolution temperature of the dissolution unit within the current target period, and determine the dissolution temperature deviation based on the difference between the actual dissolution temperature and the preset dissolution temperature;

Calculate the grade value of the dissolution temperature deviation using the preset variation range and domain interval for the dissolution temperature deviation; and

Based on the difference between the dissolution temperature deviation in the previous target period and the dissolution temperature deviation in the current target period, determine the dissolution temperature deviation change rate, and use the change range preset for the dissolution temperature deviation change rate and domain of discourse interval, and calculate the grade value of the dissolution temperature deviation change rate.
The method of claim 4, wherein determining the steam flow rate of the dissolution unit in the next target period includes:

Based on the adjustment interval of the steam valve of the dissolution unit, the grade value of the dissolution temperature deviation, and the grade value of the dissolution temperature deviation change rate, the steam flow rate in the next target period is calculated.
The method of claim 4, wherein determining the target feed amount of the dissolution unit in the next target period includes:

Based on the adjustment interval of the feed amount of the dissolution unit, the grade value of the dissolution temperature deviation, and the grade value of the dissolution temperature deviation change rate, the target feed amount in the next target period is calculated.
The method according to claim 4, wherein the dissolution unit is provided with n heating sections, each of the heating sections collects temperature data m times within the target period, and the temperature data is collected m times within the current target period. Obtain the actual dissolution temperature of the dissolution unit, including:

Obtain the first average temperature value of the temperature data collected m times for each heating section, and obtain the second average temperature value of the temperature data collected m times for n heating sections, where n and m are both greater than 1 a positive integer;

For each heating section, if the difference between the corresponding first average temperature value and the second average temperature value is greater than the preset deviation threshold, then discard the first average temperature value corresponding to the heating section; and

Based on the first average temperature value corresponding to the retained heating section, the actual dissolution temperature of the dissolution unit is determined.
The method of claim 1, further comprising:

When it is detected that the actual feed amount is less than the first percentage of the rated feed amount, or it is detected that the actual feed amount is greater than the fourth percentage of the rated feed amount, an alarm message is issued. .
A dissolution temperature control device, applied to a dissolution unit, the device includes:

A data acquisition unit is used to obtain the feed flow rate of the dissolution unit, and determine the actual feed amount of the dissolution slurry of the dissolution unit within the current target period based on the feed flow rate;

A data processing unit, configured to determine whether the dissolution unit will perform the next step when detecting that the actual feed amount is greater than the first percentage of the rated feed amount and less than the second percentage of the rated feed amount. The steam flow rate within the target period; or when detecting that the actual feed amount is greater than the third percentage of the rated feed amount and less than the fourth percentage of the rated feed amount, determining the The steam flow rate of the dissolution unit in the next target period; wherein, the first percentage is less than the second percentage, the second percentage is less than the third percentage, and the third percentage The percentage is less than said fourth percentage; and

A control unit configured to control the actual steam flow rate of the dissolution unit in the next target period based on the steam flow rate, so that the dissolution temperature in the next target period is within a preset range.
A dissolution temperature control device includes a memory, a processor, and code stored in the memory and executable on the processor. When the processor executes the code, the method of any one of claims 1-8 is implemented.