Adding method, device and equipment of waste gas treatment agent and medium

Abstract

The invention discloses a waste gas treatment agent adding method, device and equipment and a medium, and belongs to the technical field of metallurgy. The method comprises the following steps: acquiring a pollutant concentration limit value, the concentration of pollutants discharged at the current moment, and a concentration mean value of the pollutants discharged from the starting moment of the current time period to the current moment; determining a pollutant concentration threshold value at the current moment according to the pollutant concentration limit value and the pollutant concentration mean value; if the pollutant concentration is greater than the pollutant concentration threshold value, adding a waste gas treatment agent; if the pollutant concentration is smaller than or equal to the pollutant concentration threshold value, adding of the waste gas treatment agent is stopped. According to the method, by adjusting the pollutant concentration threshold value in real time, the amount of the waste gas treatment agent added in each time period is very suitable for the pollutant emission condition in the current time period, and the waste gas treatment cost of enterprises is saved while it is guaranteed that the emitted pollutant concentration meets the requirement.

Description

Technical Field

[0001] The invention relates to the technical field of metallurgy, and in particular to a method, device, equipment and medium for adding a waste gas treatment agent. Background Art

[0002] As the country's air pollution control becomes more stringent, the limit of air pollutant emission concentration is also being tightened. In order to reduce the concentration of pollutants in the flue gas emitted from the emission port, many enterprises have added treatment facilities at the end. In particular, for gaseous pollutants such as SO2 and NOX, a variety of end-of-pipe treatment facilities have been built according to the characteristics of flue gas. However, no matter what kind of facility, it is necessary to add desulfurizers, denitrifiers and other waste gas treatment agents to the flue gas.

[0003] In the related technology, a CEMS (Continuous Emission Monitoring System) is installed at the emission port to monitor the concentration of pollutants emitted. If the pollutant concentration is higher than the concentration limit required by the local emission standards, waste gas treatment agents are added to ensure that the hourly average concentration of pollutants emitted is less than the concentration limit.

[0004] However, the reaction between the agent and the waste gas takes time and is a lagging process. Sometimes after the agent is added, the pollutant concentration is far less than the concentration limit at certain times. When the pollutant concentration is higher than the concentration limit next time, the waste gas treatment agent is added again, resulting in the average concentration of pollutants actually discharged in a certain hour being far less than the concentration limit. Inversely, it shows that the hourly dosage of the agent is too large. Therefore, the above-mentioned method of adding agents has poor accuracy and increases the waste gas treatment cost of enterprises. Summary of the invention

[0005] In view of the above problems, the present invention is proposed to provide a method, device, equipment and medium for adding waste gas treatment agents to solve the above problems. By adjusting the pollutant concentration threshold in real time, the amount of waste gas treatment agent added in each time period is very suitable for the pollutant emission situation in the current time period, so that the amount of waste gas treatment agent added will not be too much or too little, ensuring that the concentration of discharged pollutants meets the requirements while saving the company's waste gas treatment costs.

[0006] In a first aspect, the present invention provides a method for adding an exhaust gas treatment agent, the method comprising:

[0007] Obtaining the pollutant concentration limit and the pollutant concentration emitted at the current moment, as well as the average pollutant concentration emitted from the start moment of the current time period to the current moment;

[0008] Determining the pollutant concentration threshold at the current moment according to the pollutant concentration limit and the pollutant concentration mean;

[0009] If the pollutant concentration is greater than the pollutant concentration threshold, adding an exhaust gas treatment agent;

[0010] If the pollutant concentration is less than or equal to the pollutant concentration threshold, the addition of the exhaust gas treatment agent is stopped.

[0011] Optionally, determining the pollutant concentration threshold at the current moment according to the pollutant concentration limit and the pollutant concentration mean includes:

[0012] Calculate a first duration between the starting time and the current time;

[0013] Calculate a first product of the pollutant concentration mean and the first time length;

[0014] Calculating a second product of the pollutant concentration limit and the total duration of the current time period;

[0015] Calculating the difference between the second product and the first product;

[0016] Calculating a second duration between the current moment and the end moment of the current time period;

[0017] The ratio of the difference to the second time period is determined as the pollutant concentration threshold at the current moment.

[0018] Optionally, the adding of waste gas treatment agent includes:

[0019] Obtain the fluctuation of pollutant concentration;

[0020] Determining the amount of waste gas treatment agent to be added according to the pollutant concentration fluctuation amount;

[0021] The waste gas treatment agent is added according to the added amount.

[0022] Optionally, the pollutant concentration fluctuation is positively correlated with the added amount.

[0023] Optionally, the adding of waste gas treatment agent includes:

[0024] Determining the amount of the waste gas treatment agent to be added according to the pollutant concentration limit;

[0025] The waste gas treatment agent is added according to the added amount.

[0026] Optionally, the pollutant concentration limit is negatively correlated with the added amount.

[0027] Optionally, before adding the waste gas treatment agent, the method includes:

[0028] If the added waste gas treatment agent is a denitrification agent, the temperature of the emitted flue gas will be increased to above the set temperature.

[0029] In a second aspect, the present invention provides a device for adding an exhaust gas treatment agent, the device comprising:

[0030] An acquisition module, used to obtain the pollutant concentration limit and the pollutant concentration emitted at the current moment, as well as the average pollutant concentration emitted from the start moment of the current time period to the current moment;

[0031] A determination module, configured to determine the pollutant concentration threshold at the current moment according to the pollutant concentration limit and the pollutant concentration mean;

[0032] A dosing module, used for adding an exhaust gas treatment agent if the pollutant concentration is greater than the pollutant concentration threshold;

[0033] The stop module is used to stop adding the exhaust gas treatment agent if the pollutant concentration is less than or equal to the pollutant concentration threshold.

[0034] In a third aspect, the present invention provides an electronic device comprising: a memory and a processor, wherein the memory and the processor are communicatively connected to each other, the memory stores computer instructions, and the processor executes the method described in the first aspect by executing the computer instructions.

[0035] In a fourth aspect, the present invention provides a computer-readable storage medium, wherein the computer-readable storage medium stores computer instructions, and the computer instructions are used to enable the computer to execute the method described in the first aspect.

[0036] The technical solution provided in the embodiments of the present invention has at least the following technical effects or advantages:

[0037] The embodiment of the present invention provides a method, device, equipment and medium for adding waste gas treatment agents, which obtains the pollutant concentration limit and the pollutant concentration discharged at the current moment, as well as the average pollutant concentration discharged from the start moment of the current time period to the current moment, to understand the pollutant emission situation in the early stage of the current time period; according to the pollutant concentration limit and the pollutant concentration average, the pollutant concentration threshold at the current moment is determined, so that the pollutant concentration threshold can change with the change of the pollutant emission situation and the pollutant concentration limit in the early stage of the current time period; if the pollutant concentration is greater than the pollutant concentration threshold, it means that the pollutant emission is too much, then the waste gas treatment agent is added; if the pollutant concentration is less than or equal to the pollutant concentration threshold, it means that the pollutant emission is less, then stop adding the waste gas treatment agent. The method adjusts the pollutant concentration threshold in real time, so that the amount of waste gas treatment agent added in each time period is very suitable for the pollutant emission situation in the current time period, so that the amount of waste gas treatment agent added will not be too much or too little, ensuring that the concentration of pollutants discharged meets the requirements while saving the waste gas treatment cost of the enterprise.

[0038] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention, it can be implemented according to the contents of the specification. In order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present invention. Moreover, the same reference symbols are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0040] Figure 1 This is a flow chart of a method for adding an exhaust gas treatment agent provided by an embodiment of the present invention;

[0041] Figure 2 It is a structural block diagram of a waste gas treatment agent dosing device provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0042] In order to make the purpose, technical solutions and advantages of the present application clearer, the implementation mode of the present application will be further described in detail below in conjunction with the accompanying drawings. It should be understood that the embodiments of the present disclosure and the specific features in the embodiments are detailed descriptions of the technical solutions of the present application, rather than limitations on the technical solutions of the present application. In the absence of conflict, the embodiments of the present application and the technical features in the embodiments can be combined with each other.

[0043] Figure 1is a flow chart of a method for adding an exhaust gas treatment agent provided by an embodiment of the present invention, such as Figure 1 As shown, the method includes:

[0044] Step S110: Obtain the pollutant concentration limit and the pollutant concentration emitted at the current moment, as well as the average pollutant concentration emitted from the start moment of the current time period to the current moment.

[0045] In this embodiment, the pollutant concentration limit can be manually input, and the input pollutant concentration limit must be less than or equal to the local emission standard. By adding waste gas treatment agents, the average pollutant concentration emitted in each time period is less than the pollutant concentration limit. For example, the local emission standard requirement is 30mg / m 3 , the input pollutant concentration limit can be 29mg / m 3 . The concentration of pollutants emitted can be detected in real time through the CEMS system. The time of each day can be divided into multiple time periods of equal length, each time period includes a start time and an end time, and the time period in which the current time is located is the current time period. In the current time period, the pollutant concentration collected by the CEMS system will be obtained at each moment between the start time and the current moment, and the average value of the multiple pollutant concentrations obtained will be used as the average concentration of pollutants emitted from the start time to the current moment, that is, the average concentration of pollutants emitted before the current moment in the current time period. For example, the 24 hours of each day can be divided into 24 one-hour time periods.

[0046] Step S120: Determine the pollutant concentration threshold at the current moment according to the pollutant concentration limit and the pollutant concentration mean.

[0047] In this embodiment, the pollutant concentration threshold is not fixed, but can be updated in real time, and the pollutant concentration threshold at each moment may be different. The pollutant concentration threshold will change with the change of the pollutant concentration limit and the pollutant concentration mean. For example, if the pollutant concentration limit becomes lower, the pollutant concentration threshold will also become lower; if the mean concentration of pollutants discharged before the current moment in the current time period becomes higher, the pollutant concentration threshold may become lower.

[0048] Step S130: If the pollutant concentration is greater than the pollutant concentration threshold, then add an exhaust gas treatment agent.

[0049] In this embodiment, if the pollutant concentration at the current moment is greater than the pollutant concentration threshold at the current moment, it means that the current pollutant concentration is too high, and the pollutant concentration is reduced by adding an exhaust gas treatment agent. The lower the pollutant concentration threshold, the more frequently the exhaust gas treatment agent is added, and the lower the pollutant concentration after addition; conversely, the higher the pollutant concentration threshold, the lower the frequency of exhaust gas treatment agent addition, and the pollutant concentration after addition will be slightly higher. The exhaust gas treatment agent can be added through a dosing device.

[0050] For example, since the average pollutant concentration emitted before the current moment in the current time period is high and higher than the pollutant concentration limit, the newly determined pollutant concentration threshold for the current moment will be low and far lower than the pollutant concentration limit, which will cause the addition of waste gas treatment agents to be more frequent in the remaining time of the current time period, thereby making the average pollutant concentration emitted for the remaining time of the current time period lower. The lower average pollutant concentration emitted for the remaining time of the current time period is combined with the higher average pollutant concentration emitted before the current moment in the current time period, ultimately making the average pollutant concentration emitted for the entire current time period below the pollutant concentration limit and not differing too much.

[0051] In other words, the more pollutants are emitted in the early stage, the less pollutant emissions must be controlled in the later stage to ensure that the average pollutant concentration emitted during the entire time period does not exceed the pollutant concentration limit. Moreover, this method of adding waste gas treatment agents can also make the average pollutant emissions in the current time period not much lower than the pollutant concentration limit. The amount of waste gas treatment agents added in the entire time period can be reasonably controlled, saving the cost of waste gas treatment for enterprises.

[0052] Step S140: If the pollutant concentration is less than or equal to the pollutant concentration threshold, stop adding the exhaust gas treatment agent.

[0053] In this embodiment, if the pollutant concentration is less than or equal to the pollutant concentration threshold, it means that the current pollutant concentration emitted is low enough and no further waste gas treatment agent needs to be added.

[0054] Optionally, step S120 includes:

[0055] Calculate the first duration between the start moment and the current moment; calculate the first product of the average pollutant concentration and the first duration; calculate the second product of the pollutant concentration limit and the total duration of the current time period; calculate the difference between the second product and the first product; calculate the second duration between the current moment and the end moment of the current time period; determine the ratio of the difference to the second duration as the pollutant concentration threshold at the current moment.

[0056] It can be understood that the pollutant concentration threshold at the current moment is calculated by reasoning through the following formula:

[0057] t 1 ×X+t 2 ×Y=t×N Formula (1)

[0058] Among them, t 1 represents the first time duration, X represents the mean pollutant concentration, t 2 represents the second duration, Y represents the second duration, t represents the total duration, N represents the pollutant concentration limit, t 1 +t 2 =t.

[0059] It can be understood that if the amount of waste gas treatment agent added in the current time period makes the average concentration of pollutants actually discharged just equal to the pollutant concentration limit, it means that the amount of the waste gas treatment agent is the minimum value to ensure that the average concentration of pollutants actually discharged is less than or equal to the pollutant concentration limit. When the amount of waste gas treatment agent added is the minimum value, the equation of formula 1 can be obtained, that is: the sum of the concentration of pollutants discharged at all times before the current time in the current time period plus the sum of the concentration of pollutants discharged at all times in the remaining time of the current time period is equal to the maximum value of the sum of the concentration of pollutants discharged at all times in the current time period.

[0060] Transforming formula (1), we get formula (2):

[0061]

[0062] Therefore, according to formula (2), the pollutant concentration threshold at the current moment can be calculated, and the decision on whether to add waste gas treatment agents can be made based on the pollutant concentration threshold. This can achieve the use of the minimum amount of waste gas treatment agents to make the average pollutant concentration emitted in the current time period less than or equal to the pollutant concentration limit, thereby saving the company's waste gas treatment costs.

[0063] In this embodiment, for the sake of safety, the pollutant concentration threshold at the current moment may be set to be slightly smaller than the ratio of the difference to the second time period.

[0064] The total duration of the time period can be set according to actual conditions. The longer the total duration of the time period, the lower the accuracy of pollutant concentration processing, and the shorter the total duration of the time period, the higher the accuracy of pollutant concentration processing. For example, the time period is 1 hour, 2 hours or 3 hours.

[0065] For example, the time period is 1 hour, the pollutant concentration is collected once a minute, and the current time is the 5th minute. The average pollutant concentration of the first 5 minutes of the current hour is 35, and the pollutant concentration limit is 30. The pollutant concentration threshold for the 5th minute is calculated as

[0066] It should be noted that the current moment can refer to the current minute or the current second. If the current moment is the current minute, the minute average of the pollutant concentration collected by the CEMS system is obtained once a minute, and the pollutant concentration threshold is also updated once a minute. The units of the first duration, the second duration, and the total duration are minutes; if the current moment is the current second, the second average of the pollutant concentration collected by the CEMS system is obtained once a second, and the pollutant concentration threshold is also updated once a second. The units of the first duration, the second duration, and the total duration are seconds. In other words, the units of time involved in the text are the same.

[0067] The method for adding waste gas treatment agents in this embodiment can scientifically calculate the average concentration of pollutants emitted before the current moment in each time period, and based on this, control the average concentration of pollutants to be emitted for the remaining time of the time period, so that the total dosage of each time period is reasonable, thereby solving the problem of excessive dosage of agents in related technologies and saving enterprise costs.

[0068] Optionally, step S130 includes:

[0069] Obtain the fluctuation amount of pollutant concentration; determine the amount of waste gas treatment agent to be added according to the fluctuation amount of pollutant concentration; and add the waste gas treatment agent according to the added amount.

[0070] In this embodiment, the pollutant concentration fluctuation amount can be calculated according to the pollutant concentration at each moment. The greater the pollutant concentration fluctuation amount, the worse the effect of exhaust gas treatment. Therefore, the amount of waste gas treatment agent added can be determined according to the pollutant concentration fluctuation amount, and the waste gas treatment agent is added according to the amount added to reduce the fluctuation of pollutant concentration.

[0071] Optionally, the fluctuation amount of pollutant concentration is positively correlated with the added amount.

[0072] In this embodiment, the pollutant concentration fluctuates greatly, which may be because the waste gas treatment agent is not added enough, the waste gas reaction is not sufficient, and the pollutant concentration rises faster. At this time, the greater the pollutant concentration fluctuation, the more corresponding waste gas treatment agent is added; conversely, the pollutant concentration fluctuation is small, which means that the waste gas treatment agent is added more appropriately. At this time, the corresponding amount of waste gas treatment agent added is relatively small.

[0073] Optionally, step S130 further includes:

[0074] Determine the amount of waste gas treatment agent to be added based on the pollutant concentration limit; add the waste gas treatment agent according to the added amount.

[0075] In this embodiment, the amount of waste gas treatment agent added is affected by the pollutant concentration limit. The size of the waste gas treatment agent is determined according to the size of the input pollutant concentration limit, so that the average pollutant concentration emitted in each time period is less than the pollutant concentration limit.

[0076] Optionally, the pollutant concentration limit is negatively correlated to the added amount.

[0077] In this embodiment, the lower the pollutant concentration limit, the higher the requirement for exhaust gas treatment, and more exhaust gas treatment agents need to be added to allow more exhaust gas to be reacted and thus discharge fewer pollutants; conversely, the higher the pollutant concentration limit, the looser the requirement for exhaust gas treatment, and it is not necessary to add too many exhaust gas treatment agents in order to make the average concentration of emitted pollutants meet the requirements.

[0078] In this embodiment, the amount of waste gas treatment agent added can also be determined according to the pollutant concentration fluctuation amount and the pollutant concentration limit; the waste gas treatment agent is added according to the added amount. It can be understood that the influence of the pollutant concentration fluctuation amount and the pollutant concentration limit on the amount of waste gas treatment agent added is considered at the same time, so that the amount of waste gas treatment agent added is more accurate.

[0079] Optionally, before step S130, the method further includes:

[0080] If the added waste gas treatment agent is a denitrification agent, the temperature of the emitted flue gas will be increased to above the set temperature.

[0081] In this embodiment, the waste gas treatment agent may include a desulfurizer, a denitrifier or other agents. Dry desulfurization generally adds desulfurizers such as sodium bicarbonate and calcium hydroxide, and selective catalytic reduction denitrification or selective non-catalytic reduction denitrification generally adds denitrifiers such as ammonia water. In the selective catalytic reduction denitrification process, a catalyst is also required to catalyze the chemical reaction between the denitrifier and the waste gas. However, the catalyst can only work at a certain temperature. Therefore, the temperature of the flue gas must be heated to above the set temperature so that the catalyst can be under the required temperature conditions, and then the denitrifier is added so that the denitrifier and the waste gas can undergo a sufficient chemical reaction.

[0082] In this embodiment, before step S110, the method may further include:

[0083] A request is sent to the user whether to automatically update the pollutant concentration threshold; if the user agrees to update the request, step S110 is executed; if the user refuses to update the request, step S110 is not executed.

[0084] It can be understood that a pop-up box can be popped up on the monitoring page to ask the operator whether to automatically update the pollutant concentration threshold, and wait for the operator to manually confirm. If the operator clicks the "Yes" button, the pollutant concentration threshold is automatically updated according to the method in this implementation, so as to more accurately and scientifically control the addition of waste gas treatment agents, and ensure that the average pollutant concentration of each time period is less than the pollutant concentration limit with the minimum amount of waste gas treatment agents added, thereby reducing the company's operating costs; if the operator clicks the "No" button, the determination of whether to add waste gas treatment agents is made according to the fixed pollutant concentration threshold, and the pollutant concentration threshold remains unchanged during the entire waste gas treatment process.

[0085] Based on the same inventive concept, the embodiment of the present invention also provides a device for adding waste gas treatment agents. Figure 2 is a structural block diagram of a waste gas treatment agent dosing device provided by an embodiment of the present invention, such as Figure 2 As shown, the device 200 includes an acquisition module 201 , a determination module 202 , an addition module 203 and a stop module 204 .

[0086] The acquisition module 201 is used to obtain the pollutant concentration limit and the pollutant concentration discharged at the current moment, as well as the average pollutant concentration discharged from the start moment of the current time period to the current moment;

[0087] A determination module 202 is used to determine the pollutant concentration threshold at the current moment according to the pollutant concentration limit and the pollutant concentration mean;

[0088] The dosing module 203 is used to add an exhaust gas treatment agent if the pollutant concentration is greater than the pollutant concentration threshold;

[0089] The stop module 204 is used to stop adding the exhaust gas treatment agent if the pollutant concentration is less than or equal to the pollutant concentration threshold.

[0090] Optionally, the determination module 202 is further configured to:

[0091] Calculate the first duration between the start time and the current time;

[0092] Calculate the first product of the mean value of the pollutant concentration and the first time length;

[0093] Calculate the second product of the pollutant concentration limit and the total duration of the current time period;

[0094] Calculate the difference between the second product and the first product;

[0095] Calculate the second duration between the current time and the end time of the current time period;

[0096] The ratio of the difference to the second time period is determined as the pollutant concentration threshold at the current moment.

[0097] Optionally, the dosing module 203 is also used for:

[0098] Obtain the fluctuation of pollutant concentration;

[0099] Determine the amount of waste gas treatment agent to be added based on the fluctuation of pollutant concentration;

[0100] Add waste gas treatment agent according to the added amount.

[0101] Optionally, the fluctuation amount of pollutant concentration is positively correlated with the added amount.

[0102] Optionally, the dosing module 203 is also used for:

[0103] Add waste gas treatment agents, including:

[0104] Determine the amount of waste gas treatment agent to be added based on the pollutant concentration limit;

[0105] Add waste gas treatment agent according to the added amount.

[0106] Optionally, the pollutant concentration limit is negatively correlated to the added amount.

[0107] Optionally, the device 200 further includes a temperature increasing module, which is used to:

[0108] If the added waste gas treatment agent is a denitrification agent, the temperature of the emitted flue gas will be increased to above the set temperature.

[0109] It can be understood that the device provided in the above embodiment is only illustrated by the division of the above functional modules. In actual applications, the above functions can be assigned to different functional modules as needed, that is, the internal structure of the device can be divided into different functional modules to complete all or part of the functions described above.

[0110] An embodiment of the present invention further provides an electronic device, which may include a processor and a memory, wherein the processor and the memory may be communicatively connected to each other via a bus or other means.

[0111] The processor may be a central processing unit (CPU), or an application specific integrated circuit (ASIC), or may be configured to implement one or more integrated circuits of the embodiments of the present application, or may also be other general-purpose processors, digital signal processors (DSP), application specific integrated circuits (ASIC), field programmable gate arrays (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components and other chips, or a combination of the above-mentioned chips.

[0112] The memory may include a large capacity memory for data or instructions. By way of example and not limitation, the memory may include a hard disk drive (HDD), a floppy disk drive, a flash memory, an optical disk, a magneto-optical disk, a magnetic tape, or a universal serial bus (USB) drive or a combination of two or more of these. Where appropriate, the memory may include a removable or non-removable (or fixed) medium. Where appropriate, the memory may be inside or outside the electronic device. In a particular embodiment, the memory may be a non-volatile solid-state memory.

[0113] In one example, the memory may be a read-only memory (ROM). In one example, the ROM may be a mask-programmed ROM, a programmable ROM (PROM), an erasable PROM (EPROM), an electrically erasable PROM (EEPROM), an electrically rewritable ROM (EAROM), or a flash memory, or a combination of two or more of these.

[0114] The processor implements any one of the methods for adding waste gas treatment agents in the above embodiments by reading and executing computer program instructions stored in the memory.

[0115] In one example, the electronic device may further include a communication interface and a bus. Among them, the processor, memory, and communication interface are connected through a bus and communicate with each other. The communication interface is mainly used to realize the communication between the modules, devices, units and / or devices in the embodiment of the present application. Where appropriate, the bus may include one or more buses.

[0116] In addition, in combination with the method for adding waste gas treatment agents in the above embodiments, the embodiments of the present invention can provide a computer-readable storage medium for implementation. The computer-readable storage medium stores computer program instructions; when the computer program instructions are executed by the processor, any method for adding waste gas treatment agents in the above embodiments is implemented.

[0117] Those skilled in the art can understand that all or part of the processes in the above-mentioned embodiments can be implemented by instructing the relevant hardware through a computer program, and the program can be stored in a computer-readable storage medium, and when the program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, the storage medium can be a read-only memory (ROM), a random access memory (RAM), a flash memory, a hard disk drive (HDD) or a solid-state drive (SSD), etc.; the storage medium can also include a combination of the above-mentioned types of memory.

[0118] The technical solutions in the above embodiments of the present application have at least the following technical effects or advantages:

[0119] The embodiment of the present invention provides a method, device, equipment and medium for adding waste gas treatment agents, which obtains the pollutant concentration limit and the pollutant concentration discharged at the current moment, as well as the average pollutant concentration discharged from the start moment of the current time period to the current moment, to understand the pollutant emission situation in the early stage of the current time period; according to the pollutant concentration limit and the pollutant concentration average, the pollutant concentration threshold at the current moment is determined, so that the pollutant concentration threshold can change with the change of the pollutant emission situation and the pollutant concentration limit in the early stage of the current time period; if the pollutant concentration is greater than the pollutant concentration threshold, it means that the pollutant emission is too much, then the waste gas treatment agent is added; if the pollutant concentration is less than or equal to the pollutant concentration threshold, it means that the pollutant emission is less, then stop adding the waste gas treatment agent. The method adjusts the pollutant concentration threshold in real time, so that the amount of waste gas treatment agent added in each time period is very suitable for the pollutant emission situation in the current time period, so that the amount of waste gas treatment agent added will not be too much or too little, ensuring that the concentration of pollutants discharged meets the requirements while saving the waste gas treatment cost of the enterprise.

[0120] In the description provided herein, a large number of specific details are described. However, it is understood that embodiments of the present invention can be practiced without these specific details. In some instances, well-known methods, structures and techniques are not shown in detail so as not to obscure the understanding of this description.

[0121] Similarly, it should be understood that in order to streamline the present disclosure and aid in understanding one or more of the various inventive aspects, in the above description of exemplary embodiments of the present invention, various features of the present invention are sometimes grouped together into a single embodiment, figure, or description thereof. However, this disclosed method should not be interpreted as reflecting the intention that the claimed invention requires more features than those explicitly recited in each claim. More specifically, as reflected in the claims below, inventive aspects lie in less than all the features of the individual embodiments disclosed above. Therefore, the claims that follow the specific embodiment are hereby expressly incorporated into the specific embodiment, with each claim itself serving as a separate embodiment of the present invention.

[0122] It should be noted that the above embodiments illustrate the present invention rather than limit it, and that those skilled in the art may devise alternative embodiments without departing from the scope of the appended claims. In the claims, any reference symbol between brackets shall not be construed as a limitation on the claims. The word "comprising" does not exclude the presence of components or steps not listed in the claims. The word "one" or "an" preceding a component does not exclude the presence of a plurality of such components. The present invention may be implemented by means of hardware comprising a number of different components and by means of a suitably programmed computer. In a unit claim enumerating a number of devices, several of these devices may be embodied by the same hardware item. The use of the words first, second, and third, etc., does not indicate any order. These words may be interpreted as names.

Claims

1. A method for adding an exhaust gas treatment agent, characterized in that: The method comprises: Obtaining the pollutant concentration limit and the pollutant concentration emitted at the current moment, as well as the average pollutant concentration emitted from the start moment of the current time period to the current moment; Determining the pollutant concentration threshold at the current moment according to the pollutant concentration limit and the pollutant concentration mean; If the pollutant concentration is greater than the pollutant concentration threshold, adding an exhaust gas treatment agent; If the pollutant concentration is less than or equal to the pollutant concentration threshold, the addition of the exhaust gas treatment agent is stopped.

2. The method for adding waste gas treatment agent according to claim 1, characterized in that: The determining the pollutant concentration threshold at the current moment according to the pollutant concentration limit and the pollutant concentration mean includes: Calculate a first duration between the starting time and the current time; Calculate a first product of the pollutant concentration mean and the first time length; Calculating a second product of the pollutant concentration limit and the total duration of the current time period; Calculating the difference between the second product and the first product; Calculating a second duration between the current moment and the end moment of the current time period; The ratio of the difference to the second time period is determined as the pollutant concentration threshold at the current moment.

3. The method for adding waste gas treatment agent according to claim 1, characterized in that: The adding of waste gas treatment agent comprises: Obtain the fluctuation of pollutant concentration; Determining the amount of waste gas treatment agent to be added according to the pollutant concentration fluctuation amount; The waste gas treatment agent is added according to the added amount.

4. The method for adding waste gas treatment agent according to claim 3, characterized in that: The pollutant concentration fluctuation amount is positively correlated with the added amount.

5. The method for adding waste gas treatment agent according to claim 1, characterized in that: The adding of waste gas treatment agent comprises: Determining the amount of the waste gas treatment agent to be added according to the pollutant concentration limit; The waste gas treatment agent is added according to the added amount.

6. The method for adding waste gas treatment agent according to claim 5, characterized in that: The pollutant concentration limit is negatively correlated with the added amount.

7. The method for adding waste gas treatment agent according to claim 1, characterized in that: Before adding the waste gas treatment agent, the method includes: If the added waste gas treatment agent is a denitrification agent, the temperature of the emitted flue gas will be increased to above the set temperature.

8. A device for adding waste gas treatment agents, characterized in that: The device comprises: An acquisition module, used to obtain the pollutant concentration limit and the pollutant concentration emitted at the current moment, as well as the average pollutant concentration emitted from the start moment of the current time period to the current moment; A determination module, configured to determine the pollutant concentration threshold at the current moment according to the pollutant concentration limit and the pollutant concentration mean; A dosing module, used for adding an exhaust gas treatment agent if the pollutant concentration is greater than the pollutant concentration threshold; The stop module is used to stop adding the exhaust gas treatment agent if the pollutant concentration is less than or equal to the pollutant concentration threshold.

9. An electronic device, characterized in that: include: A memory and a processor, wherein the memory and the processor are communicatively connected to each other, the memory stores computer instructions, and the processor executes the method according to any one of claims 1 to 7 by executing the computer instructions.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores computer instructions, and the computer instructions are used to cause the computer to execute the method according to any one of claims 1 to 7.

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