Biological desulfurization system and cooperative control method

Abstract

The invention relates to the technical field of biological desulfurization, in particular to a biological desulfurization system and a cooperative control method.The biological desulfurization system comprises biological desulfurization equipment which comprises a plurality of reaction units and an edge intelligent control device, a sulfur concentration sensor, an electrochemical sensor, a carbon source feeding device and an aeration device which are in communication connection with the edge intelligent control device are arranged in each reaction unit, and the reaction units comprise a first reaction unit and a second reaction unit which are adjacent to each other; and the state detection module is used for acquiring state information of the desulfurization system in each reaction unit based on detection results of each sulfur concentration sensor and each electrochemical sensor. By monitoring multiple data such as the sulfur concentration, the electrochemical sensor and flora activity deviation in real time, the system can accurately identify the unbalance state of the reaction unit and adjust the working parameters of the carbon source feeding device and the aeration device in time, so that the desulfurization process is optimized, and the overall efficiency of the system is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of biological desulfurization, in particular to a biological desulfurization system and a collaborative control method. BACKGROUND

[0002] Biological desulfurization usually uses bioreactors (such as gas-liquid reaction towers, fluidized bed reactors, etc.) for treatment. The microbial population contained in these reactors exerts a desulfurization effect under optimized environmental conditions (such as suitable pH, temperature, oxygen concentration, etc.). The design of the reactor needs to consider factors such as gas flow, microbial activity, reaction rate, etc.

[0003] Currently, traditional desulfurization methods usually rely on pre-set process flows and are difficult to adjust the reaction process according to real-time data, which may lead to the system being unable to cope with certain environmental changes or special conditions in actual operation, thereby affecting the desulfurization effect and causing efficiency reduction or equipment damage.

[0004] In addition, the monitoring means of traditional desulfurization methods is relatively extensive, and usually only maintenance or adjustment can be carried out after the system has problems, which not only increases the risk of equipment failure, but also may lead to reduced desulfurization effect, thereby causing greater impact on enterprise production. SUMMARY

[0005] To achieve the above-mentioned purpose, the present application provides the following technical scheme: a biological desulfurization system, comprising: a biological desulfurization device, the biological desulfurization device comprising a plurality of reaction units and an edge intelligent control device, a sulfur concentration sensor, an electrochemical sensor, a carbon source dosing device, and an aeration device are arranged in each reaction unit and are in communication connection with the edge intelligent control device, the reaction unit comprises adjacent first and second reaction units; a state detection module for obtaining state information of a desulfurization system in each reaction unit based on the detection results of each sulfur concentration sensor and electrochemical sensor; wherein the state information includes a sulfur concentration deviation value and a bacterial population activity deviation value; a desulfurization control module for sending corresponding control instructions to the carbon source dosing device and the aeration device according to the state information of the desulfurization system and the desulfurization material interaction relationship of the first and second reaction units in accordance with a pre-set strategy.

[0006] Preferably, according to the state information of the desulfurization system and the desulfurization material interaction relationship of the first and second reaction units, corresponding control instructions are sent to the carbon source dosing device and the aeration device in accordance with a pre-set strategy, comprising: sending a control instruction to the carbon source adding device and the aeration device of the current reaction unit in response to detecting that the desulfurization system in the current reaction unit is in an unbalanced state; obtaining a desulfurization material trajectory corresponding to the last unbalanced first reaction unit in response to detecting that the last unbalanced first reaction unit returns to an equilibrium state; wherein the desulfurization material trajectory is a flow trajectory of the desulfurization material in the last unbalanced first reaction unit to other reaction units; judging whether the desulfurization material is in the second reaction unit according to the desulfurization material trajectory to obtain an entering judgment result; sending a continuous control instruction to the carbon source adding device and the aeration device in the first reaction unit in response to the entering judgment result indicating that the desulfurization material is in the second reaction unit.

[0007] Preferably, sending a control instruction to the carbon source adding device and the aeration device of the current reaction unit in response to detecting that the desulfurization system in the current reaction unit is in an unbalanced state, comprises: obtaining a concentration distribution map of the desulfurization material in a preset time period in response to detecting that the desulfurization material is located in the overlapping flow area between the first reaction unit and the second reaction unit; wherein the preset time period is a time period before detecting that the desulfurization material is located in the overlapping flow area; judging the coverage area size of the concentration distribution map of the first reaction unit and the concentration distribution map of the second reaction unit; sending a control instruction to the carbon source adding device and the aeration device of the corresponding reaction unit with the larger coverage area of the concentration distribution map.

[0008] Preferably, after judging whether the desulfurization material is in the second reaction unit according to the desulfurization material trajectory to obtain an entering judgment result, further comprising: recording the duration after the last unbalanced first reaction unit returns to equilibrium in response to the entering judgment result indicating that the desulfurization material is not in the second reaction unit; judging whether the duration after the first reaction unit returns to equilibrium is greater than a first preset value to obtain a duration judgment result; sending a continuous control instruction to the carbon source adding device and the aeration device in the first reaction unit in response to the duration judgment result indicating that the duration after the first reaction unit returns to equilibrium is not greater than the first preset value.

[0009] Preferably, the first reaction unit and the second reaction unit are adjacent and connected through a flow guide channel, and a desulfurization material concentration sensor in communication connection with the edge intelligent control device is arranged in each of the first reaction unit and the second reaction unit. The method further comprises, after judging whether the duration of the first reaction unit returning to equilibrium is greater than a first preset value: In response to the duration judgment result indicating that the duration of the first reaction unit returning to equilibrium is greater than the first preset value, sending an instruction to reduce the addition rate to the carbon source addition device of the first reaction unit; Obtaining the desulfurization material concentration of the first reaction unit and the desulfurization material concentration of the second reaction unit; Calculating the difference between the desulfurization material concentration of the first reaction unit and the desulfurization material concentration of the second reaction unit, and judging whether the absolute value of the difference is greater than a second preset value; In response to the absolute value of the concentration difference being greater than the second preset value, sending an instruction to the aeration device of the first reaction unit to continue working.

[0010] Preferably, after calculating the difference between the desulfurization material concentration of the first reaction unit and the desulfurization material concentration of the second reaction unit, and judging whether the absolute value of the difference is greater than a second preset value, the method further comprises: If the absolute value of the difference is not greater than the second preset value, send an instruction to the aeration device of the first reaction unit to reduce the aeration intensity.

[0011] Preferably, obtaining the corresponding desulfurization material trajectory comprises: Retrieving the flow sensor data of the flow channel between the first reaction unit and the second reaction unit and the time sequence detection data of the desulfurization material concentration sensor through the edge intelligent control device; Based on the moving direction of the concentration peak in the time sequence detection data and the flow rate in the flow data, fitting the moving path of the desulfurization material after flowing out of the first reaction unit; Comparing the fitted moving path with the preset unit boundary coordinates to generate a visual desulfurization material trajectory.

[0012] Preferably, sending the control instruction to the carbon source addition device and the aeration device of the corresponding reaction unit of the concentration distribution map with a large coverage area comprises: If the concentration distribution map coverage area of the first reaction unit is greater than that of the second reaction unit, and the sulfur concentration deviation value of the first reaction unit is positive, send an instruction to increase the addition rate to the carbon source addition device thereof, and send an instruction to increase the aeration intensity to the aeration device; If the concentration distribution map coverage area of the second reaction unit is greater than that of the first reaction unit, and the bacterial population activity deviation value of the second reaction unit is negative, send an instruction to increase the addition rate to the carbon source addition device thereof, and send an instruction to add desulfurization bacterial population to the bacterial population addition device.

[0013] Preferably, the carbon source feeding device and the aeration device in the first reaction unit are sent continuous control instructions, including: The carbon source feeding amount and the aeration intensity when the first reaction unit restores balance are obtained as reference parameters; The carbon source feeding device is sent continuous feeding instructions for maintaining the reference parameters, and the aeration device is sent continuous aeration instructions for maintaining the reference parameters; The desulfurization state in the reaction unit is detected once by the sensor according to a preset detection period, if the state is stable, the instructions are maintained, and if an imbalance trend occurs, the reference parameters are restored.

[0014] A cooperative control method is suitable for the biological desulfurization system, and includes: Based on the detection results of each sulfur concentration sensor and electrochemical sensor, state information of the desulfurization system in each reaction unit is obtained; wherein the state information includes a sulfur concentration deviation value and a bacterial population activity deviation value; According to the state information of the desulfurization system and the desulfurization material interaction relationship of the first reaction unit and the second reaction unit, corresponding control instructions are sent to the carbon source feeding device and the aeration device according to a preset strategy.

[0015] Compared with the prior art, the beneficial effects of the present application are: The present application can accurately identify the imbalance state of the reaction unit by real-time monitoring of sulfur concentration, electrochemical sensor and bacterial population activity deviation, and timely adjust the working parameters of the carbon source feeding device and the aeration device, so as to optimize the desulfurization process, improve the overall efficiency of the system, maintain the balance of the reaction unit by continuously adjusting the control instructions, avoid the reduction of efficiency or failure of the system due to imbalance, and ensure the continuous and stable desulfurization process; The present application can make more accurate judgments according to the flow trajectory and concentration distribution of the desulfurization material, ensure that the optimal desulfurization effect can be achieved in each reaction unit, and the system can more efficiently utilize resources by adjusting the feeding rate and aeration intensity according to the concentration difference, flow data and bacterial population activity, thereby reducing excessive or insufficient feeding and reducing energy consumption and material waste; The present application can take preventive measures such as adjusting the aeration intensity or feeding rate before problems occur through real-time monitoring of the system state, thereby effectively avoiding damage or large-scale failure of the equipment, and can be individually controlled according to the specific conditions of different reaction units to flexibly cope with various desulfurization environments and needs, and has strong adaptability. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 The system architecture diagram of the overall system in an embodiment of the present application is shown; Figure 2 The figure is a schematic diagram of the step flow of the overall method in an embodiment of the present application.

[0017] In the figure: 1, biological desulfurization equipment; 2, state detection module; 3, desulfurization control module. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0019] Embodiment one, please refer to Figure 1 The present application provides a technical solution: a biological desulfurization system, comprising: The biological desulfurization equipment 1 comprises a plurality of reaction units and an edge intelligent control device. A sulfur concentration sensor, an electrochemical sensor, a carbon source dosing device and an aeration device are arranged in each reaction unit and are in communication connection with the edge intelligent control device. The reaction units comprise adjacent first reaction units and second reaction units. The state detection module 2 is used to obtain state information of the desulfurization system in each reaction unit based on the detection results of each sulfur concentration sensor and electrochemical sensor. The state information comprises a sulfur concentration deviation value and a bacterial population activity deviation value. The desulfurization control module 3 is used to send corresponding control instructions to the carbon source dosing device and the aeration device according to the state information of the desulfurization system and the desulfurization material interaction relationship of the first reaction units and the second reaction units according to a preset strategy.

[0020] It should be noted that the biological desulfurization equipment comprises a plurality of reaction units, each of which is equipped with a sulfur concentration sensor, an electrochemical sensor, a carbon source dosing device and an aeration device. The reaction units are divided into adjacent first reaction units and second reaction units. Each reaction unit is connected with the edge intelligent control device to realize real-time monitoring and adjustment. The state of the desulfurization system in each reaction unit is monitored by the sulfur concentration sensor and the electrochemical sensor. The key data monitored includes a sulfur concentration deviation value and a bacterial population activity deviation value. These parameters reflect the desulfurization effect and the health status of the bacterial population activity. According to the desulfurization system information fed back by the state detection module, the desulfurization control module sends control instructions to the carbon source dosing device and the aeration device according to the desulfurization material interaction relationship and the preset strategy, so as to adjust the running state of the system and optimize the desulfurization process. A specific example: assume an industrial biological desulfurization system, which includes multiple reaction units; each reaction unit has its own sulfur concentration sensor and electrochemical sensor, which detects the sulfur concentration and bacterial activity in real time during the desulfurization process; the system operates through the following steps: the first reaction unit and the second reaction unit in the system monitor the sulfur concentration deviation value through their respective sensors, which is 0.15 mol / L, while the standard value should be 0.10 mol / L; in addition, the bacterial activity deviation value also shows slightly lower than normal level; through the feedback information of the state detection module, the desulfurization control module finds that the current desulfurization effect is not up to standard; the system detects that the sulfur concentration is too high and the bacterial activity is not ideal, so it needs to be adjusted; the system calculates the amount of carbon source to be added and the amount of aeration to be increased according to the interaction between the desulfurization materials, and sends control instructions to the carbon source adding device and the aeration device to increase the input of carbon source and improve the aeration amount, so as to activate the desulfurization bacterial community and improve the sulfur removal efficiency; with the execution of the control instructions, the carbon source adding device starts to add more carbon source to the reaction unit, and the aeration device strengthens the airflow supply to promote the desulfurization reaction.

[0021] After a period of time, the sulfur concentration deviation value and the bacterial activity deviation value of the reaction unit gradually return to the normal range, and the desulfurization effect is improved.

[0022] In an optional embodiment, according to the state information of the desulfurization system and the interaction between the desulfurization materials of the first reaction unit and the second reaction unit, the corresponding control instructions are sent to the carbon source adding device and the aeration device according to the preset strategy, including: In response to detecting that the desulfurization system in the current reaction unit is in an unbalanced state, sending control instructions to the carbon source adding device and the aeration device in the current reaction unit; In response to detecting that the last unbalanced first reaction unit returns to a balanced state, obtaining the corresponding desulfurization material trajectory; wherein the desulfurization material trajectory is the flow trajectory of the desulfurization material in the last unbalanced first reaction unit to other reaction units; According to the desulfurization material trajectory, it is judged whether the desulfurization material is in the second reaction unit, and the entering judgment result is obtained; In response to the entering judgment result indicating that the desulfurization material is in the second reaction unit, sending continuous control instructions to the carbon source adding device and the aeration device in the first reaction unit.

[0023] It should be noted that when the system detects that the desulfurization system in the reaction unit is in an unbalanced state (for example, the sulfur concentration is too high or the bacterial population activity is low), the system sends control instructions to the carbon source feeding device and the aeration device to adjust the input amount of carbon source and gas flow, helping to restore the reaction balance; the acquisition of the desulfurization material track is determined by tracking the material flow direction of the last unbalanced first reaction unit; if the material flow direction is the second reaction unit, the system needs to continue to send control instructions to the related devices in the system according to this judgment; after determining that the desulfurization material has flowed into the second reaction unit, the system continues to send continuous control instructions to the carbon source feeding device and the aeration device of the first reaction unit, ensuring that the entire desulfurization process continues and the balance of the desulfurization system is maintained; Specific example: Suppose there is a biological desulfurization system, which is divided into multiple reaction units, each unit is equipped with sensors to monitor sulfur concentration and bacterial population activity; during operation, if the desulfurization effect of a certain reaction unit does not meet expectations, the system will perform the following steps: for example, in the first reaction unit, the sulfur concentration is high, showing signs of imbalance; the system determines that there is a problem with the desulfurization system in this reaction unit by monitoring the sulfur concentration deviation and bacterial population activity, and enters an unbalanced state; after the system detects that the reaction unit is unbalanced, it automatically sends control instructions to the carbon source feeding device and the aeration device of the unit; the system further tracks the desulfurization material track in the first reaction unit that is unbalanced; by detecting the material flow path, the system determines whether the material has flowed into the second reaction unit; once the system confirms that the desulfurization material has entered the second reaction unit, the system will continue to send continuous control instructions to the first reaction unit to ensure that the input amount of carbon source and gas flow remains stable to continuously optimize the desulfurization process; through this control mechanism, the sulfur concentration and bacterial population activity in the reaction unit gradually return to normal, the desulfurization effect is improved, and the overall performance of the system tends to be stable.

[0024] In an optional embodiment, in response to detecting that the desulfurization system in the current reaction unit is in an unbalanced state, sending control instructions to the carbon source feeding device and the aeration device of the current reaction unit, comprising: In response to detecting that the desulfurization material is located in the overlapping flow area between the first reaction unit and the second reaction unit, obtaining the concentration distribution diagram of the desulfurization material within a preset time period; wherein the preset time period is a time period before detecting that the desulfurization material is located in the overlapping flow area; Judging the coverage area size of the concentration distribution diagram of the first reaction unit and the concentration distribution diagram of the second reaction unit; Sending control instructions to the carbon source feeding device and the aeration device of the corresponding reaction unit of the concentration distribution diagram with a larger coverage area.

[0025] It should be noted that when the desulfurization material flows into the overlapping area between the first reaction unit and the second reaction unit, the system will monitor this change; the overlapping area refers to the area where the material flows between the two reaction units and can simultaneously affect both units; the system will obtain the concentration distribution of the desulfurization material in the overlapping flow area, which indicates the concentration change of the material in different time periods; for example, by comparing the concentrations before and after the time period, the trajectory and distribution of the material flow can be determined; the system will determine the size of the concentration distribution area covered by the first reaction unit and the second reaction unit; the concentration distribution with a larger covered area requires more adjustment of the corresponding reaction unit, indicating that the unit is more affected or has greater desulfurization needs; once the system determines which reaction unit has a larger concentration distribution area, it will send control instructions to the carbon source feeding device and the aeration device of the reaction unit to adjust the carbon source and gas flow to more effectively complete the desulfurization task. Specific example: Suppose there is a multi-unit biological desulfurization system, which contains multiple reaction units that may affect each other when processing waste gas; for example, in the first reaction unit, the desulfurization effect deviates, and the sulfur concentration does not reach the expected value, causing the desulfurization system to be out of balance; the flow path of the desulfurization material is no longer simply concentrated in one reaction unit, and part of the material begins to flow to the second reaction unit, forming an overlapping flow area between the two units; the system will obtain the concentration distribution of the two reaction units within the preset time period; suppose that one hour before the detection period, the sulfur concentration in the first reaction unit is high, while the sulfur concentration in the second reaction unit is relatively low; the system will draw the concentration distribution of the desulfurization material in these two areas and show their changes over time; the system then determines the size of the concentration distribution area covered by the two reaction units; suppose that the concentration distribution of the first reaction unit shows a larger area, indicating that the unit needs more desulfurization reactions or is more affected; based on the coverage area of the concentration distribution, the system will send control instructions to the first reaction unit to increase the workload of its carbon source feeding device and aeration device to improve the desulfurization effect of the unit and ensure smooth material flow; through this precise control, the system can improve the desulfurization efficiency of the first reaction unit while ensuring that the desulfurization effect is not negatively affected when the material flows to the downstream unit; ultimately, the system restores balance and optimizes the overall desulfurization process.

[0026] In an optional embodiment, after determining whether the desulfurization material is in the second reaction unit according to the trajectory of the desulfurization material, obtaining an entry determination result, the method further includes: In response to the entry determination result indicating that the desulfurization material is not in the second reaction unit, recording the duration of the last unbalanced first reaction unit after restoring balance; Determine whether the duration after the first reaction unit recovers equilibrium is greater than a first preset value, and obtain a duration determination result; In response to the duration judgment result indicating that the duration after the first reaction unit recovers equilibrium is not greater than the first preset value, a continuous control instruction is sent to the carbon source dosing device and the aeration device in the first reaction unit.

[0027] It should be noted that when the system detects that the desulfurization material has flowed to the overlapping area of ​​the second reaction unit, the system will determine whether the material is still in the second reaction unit; if the desulfurization material is not in the second unit, this indicates that the regulation of the first reaction unit has restored its efficiency; the system will record the duration after the first reaction unit has restored equilibrium; for example, the system detects that the concentration of the desulfurization material begins to return to normal levels, records this period of time and uses it to determine whether the reaction unit has stabilized; the system will set a first preset value, representing an ideal time to restore equilibrium; if the duration after the first reaction unit restores equilibrium is less than this preset value, the system believes that the equilibrium is not stable; if the recovery time of the first reaction unit is insufficient, the system will continue to send control instructions; these instructions will guide the carbon source dosing device and the aeration device to maintain or strengthen their working status to ensure that the reaction unit is continuously stable and achieves a desulfurization effect; Specific example: suppose that in a multi-unit biological desulfurization system, the first reaction unit has a desulfurization imbalance, resulting in a decrease in its efficiency; after regulation, the desulfurization effect gradually recovers, but the system needs to ensure continued stable operation after the balance is restored; when the system finds that the desulfurized material has flowed out of the first reaction unit and entered the overlapping area of ​​the second reaction unit, the system will consider that the desulfurization effect of the first reaction unit has returned to normal and the material no longer affects the second unit; suppose that after the balance is restored, the system starts to record the recovery time of the first reaction unit; for example, the time for the first reaction unit to restore balance is 2 hours; the system compares this time with the preset value to ensure that the reaction unit has restored stability; the first preset value set by the system is 3 hours, which means that if If the recovery time is less than 3 hours, the system will continue to believe that the first reaction unit has not reached the optimal state; in this example, the recovery time is 2 hours, which is lower than the preset value of 3 hours. Therefore, the system believes that the unit is still not fully stable. In order to ensure the stability of the desulfurization effect of the first reaction unit, the system will continue to send control instructions to the carbon source dosing device and aeration device of the reaction unit to enhance the working state of the unit until the recovery time exceeds the preset value. After sending the continuous control instructions, the first reaction unit will continue to adjust its working parameters, such as carbon source dosage and aeration flow, until the system detects that the reaction unit has returned to stability and reached the preset equilibrium time. At this time, the system will stop sending control instructions to ensure the efficient operation of the desulfurization process.

[0028] In an optional embodiment, the first reaction unit and the second reaction unit are adjacent to each other and communicate through the flow guide channel, and a desulfurization material concentration sensor in communication with the edge intelligent control device is arranged in each of the first reaction unit and the second reaction unit; After judging whether the duration after the first reaction unit restores to balance is greater than the first preset value, the method further comprises: In response to the duration judgment result indicating that the duration after the first reaction unit restores to balance is greater than the first preset value, sending an instruction of reducing the adding rate to the carbon source adding device of the first reaction unit; Obtaining the desulfurization material concentration of the first reaction unit and the desulfurization material concentration of the second reaction unit; Calculating the difference between the desulfurization material concentration of the first reaction unit and the desulfurization material concentration of the second reaction unit, and judging whether the absolute value of the difference is greater than a second preset value; In response to the absolute value of the concentration difference being greater than the second preset value, sending an instruction of continuous working to the aeration device of the first reaction unit.

[0029] It should be noted that when the system detects that the recovery time of the first reaction unit exceeds the preset value, it will start to adjust the adding rate of the system; at this time, the system will adjust the adding amount of the carbon source through the carbon source adding device to reduce the adding rate, so as to ensure that the reaction unit does not overreact, thereby achieving stable desulfurization effect; the system will monitor the desulfurization material concentration in the first reaction unit and the second reaction unit at the same time; by calculating the difference between the concentrations of the two, the system can judge whether the desulfurization effect of the first reaction unit is stable and whether further adjustment is needed; a second preset value is preset, and the system will judge the balance of the desulfurization effect according to the concentration difference; if the absolute value of the difference exceeds the set threshold, it means that the system may have an imbalance phenomenon and needs further adjustment; if the system finds that the concentration difference is greater than the preset value, it may mean that the desulfurization reaction has not reached a balanced state; at this time, the system will send an instruction to the aeration device of the first reaction unit to require it to work continuously, so as to strengthen the gas exchange, improve the reaction efficiency, and help the material to further stabilize; Specific example: assume a multi-unit biological desulfurization system is used for waste gas treatment, in which the first reaction unit and the second reaction unit are adjacent, and they are connected with each other through a flow guide channel; the system monitors that the recovery time of the first reaction unit is greater than the preset value (for example, 3 hours), which means that the reaction unit has stabilized; therefore, the system will reduce the carbon source addition rate to ensure the stability of the desulfurization efficiency of the unit, while avoiding the waste of too much carbon source; the system obtains the material concentration of the two reaction units through the concentration sensor; for example: the first reaction unit concentration: 5 mg / L; the second reaction unit concentration: 2 mg / L; calculate the concentration difference between the two: |5-2|=3 mg / L; the system sets the second preset value as 2 mg / L; if the concentration difference is greater than the value, it means that the desulfurization effect of the first reaction unit may be unstable, and the system needs to continue to adjust; since the concentration difference is 3 mg / L, which exceeds the set 2 mg / L, the system will consider that the desulfurization process needs to be further optimized; after the system finds that the concentration difference exceeds the preset value, it decides to continue to increase the working strength of the aeration device; by increasing the air supply amount, increasing the oxygen supply, helping the first reaction unit to increase the reaction rate, so as to achieve stable desulfurization effect.

[0030] In an optional embodiment, after calculating the difference between the desulfurization material concentration of the first reaction unit and the desulfurization material concentration of the second reaction unit, and judging whether the absolute value of the difference is greater than the second preset value, the method further comprises: If the absolute value of the difference is not greater than the second preset value, send a command to reduce the aeration intensity of the aeration device of the first reaction unit.

[0031] In an optional embodiment, obtaining the corresponding desulfurization material trajectory comprises: Accessing the flow sensor data of the flow guide channel between the first reaction unit and the second reaction unit and the time sequence detection data of the desulfurization material concentration sensor through the edge intelligent control device; Based on the moving direction of the concentration peak in the time sequence detection data and the flow rate in the flow data, fitting the moving path of the desulfurization material after flowing out of the first reaction unit; Comparing the fitted moving path with the preset unit boundary coordinates to generate a visual desulfurization material trajectory.

[0032] It is necessary to explain that the data is collected in real time by the desulfurization material concentration sensor and the flow sensor; these data can not only provide the change of the desulfurization material concentration, but also reflect the speed and direction of the material flow; the system analyzes the flow path of the desulfurization material according to the change trend (i.e. the moving direction) of the concentration peak value and the flow rate; by combining these two kinds of data, the system can accurately fit the motion trajectory of the material in the reaction unit; the fitted flow path is compared with the preset unit boundary coordinates to ensure that the desulfurization material does not deviate from the predetermined route; this is the key step to ensure the stability and efficiency of the reaction process; the system visualizes these data so that the operating personnel can intuitively view the flow trajectory of the material for real-time monitoring and adjustment; Specific example: assuming in a biological desulfurization system for industrial waste gas treatment, the system monitors the desulfurization material flow between the first reaction unit and the second reaction unit in real time, the following is how the system works: the concentration sensor detects the desulfurization material concentration in the first reaction unit in real time, assuming that the concentration increases rapidly to a peak value within 10 minutes; then, the concentration of this peak value begins to decrease, indicating that the material has begun to flow to the second reaction unit; the flow sensor records the flow rate data, assuming that the flow rate is recorded as 5 liters per minute, indicating the flow rate of the desulfurization material; by analyzing the moving direction of the concentration peak value (i.e. the trend of concentration increase and decrease), combined with the flow rate data, the system can calculate the path of the desulfurization material flowing from the first reaction unit to the second reaction unit; for example, assuming that the concentration peak value first moves to the right and up, indicating that the material flows to the upper right corner of the reaction unit; the system uses a mathematical model to fit the flow path of the material; for example, if the flow is small and the structure of the reaction unit is curved, the fitted path may be curved; assuming that there is a flow channel between the first reaction unit and the second reaction unit, the system will calculate the flow route of the desulfurization material and determine whether it matches the path preset during design; the system will compare the fitted path with the boundary coordinates of the reaction unit; if the flow of the material deviates from the preset track, the system can correct the path of the material by adjusting the flow or the reaction conditions; finally, the system generates a visual trajectory diagram showing the flow path of the desulfurization material in the reaction unit; this diagram can show how the material flows from the first reaction unit to the second reaction unit along the preset path; for example, the diagram may show an arrow from reaction unit A to reaction unit B, and the color and thickness of the arrow reflect the flow rate and concentration change.

[0033] In an optional embodiment, control instructions are sent to the carbon source feeding device and the aeration device corresponding to the reaction unit with a large coverage area concentration distribution map, including: If the concentration distribution area of the first reaction unit is larger than that of the second reaction unit, and the sulfur concentration deviation value of the first reaction unit is positive, send an instruction to increase the addition rate to the carbon source addition device, and send an instruction to increase the aeration intensity to the aeration device; If the concentration distribution area of the second reaction unit is larger than that of the first reaction unit, and the bacterial population activity deviation value of the second reaction unit is negative, send an instruction to increase the addition rate to the carbon source addition device, and send an instruction to add desulfurization bacterial population to the bacterial population addition device.

[0034] It should be noted that the concentration distribution diagram refers to the concentration distribution of desulfurization materials in the reaction unit; the larger the coverage area, the wider the concentration distribution, indicating that the desulfurization material concentration in this area is higher; the deviation value refers to the difference between the concentration or bacterial population activity and the preset value; positive value means that the concentration or bacterial population activity is higher than expected, and negative value means that it is lower than expected; the carbon source addition device is used to provide the carbon source required for the reaction, help the microorganisms to decompose sulfides, and promote the desulfurization reaction; the aeration device provides oxygen or other gas to maintain the activity of microorganisms during the reaction; the bacterial population addition device is used to add specific desulfurization bacterial population to the reaction system to enhance the reaction efficiency; process explanation: case one: the concentration distribution area of the first reaction unit is large, and the sulfur concentration deviation is positive; case analysis: assuming that the concentration distribution area of the first reaction unit is larger than that of the second reaction unit, and the sulfur concentration deviation value of the unit is positive, which means that the sulfur concentration of the unit exceeds the expected value; the system will send an instruction to the carbon source addition device to increase the carbon source addition rate to ensure that there is enough carbon source to support the desulfurization activity of microorganisms; at the same time, the system will send an instruction to the aeration device to increase the aeration intensity to ensure sufficient oxygen supply to microorganisms to improve their activity and promote the reaction process; case two: the concentration distribution area of the second reaction unit is large, and the bacterial population activity deviation is negative; case analysis: assuming that the concentration distribution area of the second reaction unit is larger than that of the first reaction unit, and the bacterial population activity deviation of the unit is negative, which means that the desulfurization bacterial population activity of the unit is lower than expected, which may lead to a decrease in reaction efficiency; the system will send an instruction to the carbon source addition device to increase the addition rate of carbon source to supplement the resources required for the reaction; at the same time, the system will send an instruction to the bacterial population addition device to increase the addition amount of desulfurization bacterial population to improve the microbial activity and enhance the desulfurization effect; Specific example: assume in a waste gas desulfurization industrial reaction system, two reaction units respectively handle different concentrations of waste gas flow: the first reaction unit: in the process of handling, the sensor shows that the sulfur concentration of the unit is high, and the concentration distribution area is large, which means that the concentration of sulfide in the unit exceeds the expectation; the system sends instructions to the carbon source dosing device according to this data, increases the dosing rate to ensure that the microorganisms can still effectively desulfurize in the environment of higher concentration of sulfide; at the same time, send instructions to the aeration device to increase the aeration intensity and improve the activity of microorganisms; the second reaction unit: in the monitoring process, it is found that the concentration distribution area of the second reaction unit is large, which means that the unit also handles a large amount of waste gas; however, the system detects that the deviation of the bacterial population activity of the unit is negative, indicating that the desulfurization bacterial population activity in the unit is low, which may affect the reaction efficiency; in order to improve this situation, the system sends instructions to the carbon source dosing device to increase the carbon source dosing to provide sufficient nutritional support; at the same time, the system sends instructions to the bacterial population dosing device to increase the dosage of desulfurization bacterial population to enhance the desulfurization capacity of the unit.

[0035] In an optional embodiment, the continuous control instructions are sent to the carbon source dosing device and the aeration device in the first reaction unit, including: The carbon source dosing amount and the aeration intensity when the first reaction unit recovers to balance are obtained as the baseline parameters; The continuous dosing instructions for maintaining the baseline parameters are sent to the carbon source dosing device, and the continuous aeration instructions for maintaining the baseline parameters are sent to the aeration device; The desulfurization state in the reaction unit is detected by the sensor according to the preset detection period, if the state is stable, the instructions are maintained, if the imbalance trend appears, the baseline parameters are restored.

[0036] It is necessary to explain that when the reaction unit returns to the normal operating state, the system will record the carbon source dosage and aeration intensity, which are called benchmark parameters; they are the best operating conditions of the system when it is running stably; by sending instructions to the carbon source dosing device, the carbon source dosage at the benchmark state is maintained; instructions are sent to the aeration device to ensure that the aeration intensity always maintains the benchmark value to provide sufficient oxygen to support the activity of microorganisms; according to the preset detection period, the system monitors the desulfurization state of the reaction unit through sensors; these state data include important parameters such as sulfur concentration and microbial activity; if the sensor detects that the state of the reaction unit has changed, resulting in a decrease in desulfurization efficiency or an imbalance trend, the system will automatically adjust to return to the operating state of the benchmark parameters; process explanation: assuming that during operation, the system finds that the sulfur concentration of the reaction unit is too high, or the microbial activity is low, resulting in a decrease in desulfurization efficiency; through system adjustment, the carbon source dosage and aeration intensity are increased, so that the reaction unit returns to the normal desulfurization state; when the system returns to the balanced state, it will record the current carbon source dosage and aeration intensity as the benchmark parameters and use them as reference values in the future; during the subsequent operation, the system will send maintenance instructions to the carbon source dosing device and the aeration device to ensure that these parameters continue to operate according to the benchmark values; if the state of the reaction unit is stable, these instructions will continue to be executed to ensure that the desulfurization reaction proceeds efficiently; every 5 minutes, the system will detect the desulfurization state of the reaction unit through sensors; if the system finds that the reaction unit is still in a stable state (for example, the sulfur concentration remains within the predetermined range and the microbial activity is normal), the instructions remain unchanged and the benchmark parameters continue to be maintained; if the system detects that the state of the reaction unit shows an imbalance trend (for example, the sulfur concentration rises or the microbial activity decreases), the system will automatically adjust to return to the setting of the benchmark parameters to ensure that the desulfurization process can continue smoothly; Specific example: assuming that the waste gas desulfurization system of a chemical plant encountered some fluctuations for a period of time, the sulfur concentration was once too high, resulting in a decrease in reaction efficiency; after adjustment, the system found that the increase in carbon source dosage and aeration intensity caused the sulfur concentration to return to the expected range and the microbial activity was improved; when the reaction unit returned to balance, the carbon source dosage was recorded as 100 L / h and the aeration intensity was recorded as 500 m³ / h, and these two parameters became the benchmark values; thereafter, the system monitored the state of the reaction unit through sensors according to the preset detection period; if everything is normal, the carbon source dosage and the aeration intensity continue to be maintained at 100 L / h and 500 m³ / h; assuming that after a period of time, the system detects that the sulfur concentration begins to rise and the microbial activity shows a downward trend; at this time, the system will automatically adjust the carbon source dosage and the aeration intensity to return to the initial benchmark parameters (i.e., 100 L / h and 500 m³ / h) to ensure that the reaction unit returns to the normal desulfurization state.

[0037] Example two, please refer toFigure 2 The application provides a technical solution: a cooperative control method suitable for the biological desulfurization system, which comprises the following steps: S1, obtaining state information of the desulfurization system in each reaction unit based on the detection results of each sulfur concentration sensor and electrochemical sensor; wherein the state information comprises a sulfur concentration deviation value and a bacterial population activity deviation value; S2, according to the state information of the desulfurization system and the desulfurization material interaction relationship of the first reaction unit and the second reaction unit, sending corresponding control instructions to the carbon source adding device and the aeration device according to a preset strategy.

[0038] The embodiments of the application are described in detail above with reference to the drawings, but the application is not limited thereto, and various changes can be made within the knowledge of those skilled in the art without departing from the purpose of the application.

Claims

1. A biological desulfurization system, characterized in that: include: Biological desulfurization equipment, the biological desulfurization equipment includes multiple reaction units and an edge intelligent control device, each of the reaction units is provided with a sulfur concentration sensor, an electrochemical sensor, a carbon source dosing device and an aeration device that are communicatively connected to the edge intelligent control device, and the reaction units include adjacent first and second reaction units; A status detection module, configured to obtain status information of the desulfurization system in each reaction unit based on the detection results of each sulfur concentration sensor and electrochemical sensor; wherein the status information includes a sulfur concentration deviation value and a bacterial activity deviation value; The desulfurization control module is used to send corresponding control instructions to the carbon source dosing device and the aeration device according to the state information of the desulfurization system and the interaction relationship between the desulfurization materials of the first reaction unit and the second reaction unit according to a preset strategy.

2. A biological desulfurization system according to claim 1, characterized in that: According to the state information of the desulfurization system and the interaction relationship between the desulfurization materials of the first reaction unit and the second reaction unit, corresponding control instructions are sent to the carbon source dosing device and the aeration device according to a preset strategy, including: In response to detecting that the desulfurization system in the current reaction unit is in an unbalanced state, sending a control instruction to the carbon source dosing device and the aeration device of the current reaction unit; In response to detecting that the last unbalanced first reaction unit has returned to a balanced state, a corresponding desulfurization material trajectory is obtained; wherein the desulfurization material trajectory is a flow trajectory of the desulfurization material in the last unbalanced first reaction unit flowing to other reaction units; determining whether the desulfurized material is in the second reaction unit according to the desulfurized material trajectory, and obtaining an entry judgment result; In response to the entry judgment result indicating that the desulfurized material is in the second reaction unit, a continuous control instruction is sent to the carbon source dosing device and the aeration device in the first reaction unit.

3. A biological desulfurization system according to claim 2, characterized in that: In response to detecting that the desulfurization system in the current reaction unit is in an unbalanced state, sending a control instruction to the carbon source dosing device and the aeration device of the current reaction unit, including: In response to detecting that the desulfurization material is located in the overlapping flow area between the first reaction unit and the second reaction unit, obtaining a concentration distribution diagram of the desulfurization material within a preset time period; wherein the preset time period is a time period before the desulfurization material is detected to be located in the overlapping flow area; determining a coverage area of ​​the concentration distribution map of the first reaction unit and a coverage area of ​​the concentration distribution map of the second reaction unit; The control instructions are sent to the carbon source dosing device and the aeration device of the reaction unit corresponding to the concentration distribution diagram with a large coverage area.

4. A biological desulfurization system according to claim 3, characterized in that: After determining whether the desulfurized material is in the second reaction unit according to the trajectory of the desulfurized material and obtaining the entry determination result, the method further includes: In response to the entry judgment result indicating that the desulfurized material is not in the second reaction unit, recording the duration after the last unbalanced first reaction unit recovers balance; Determine whether the duration after the first reaction unit returns to equilibrium is greater than a first preset value, and obtain a duration determination result; In response to the duration judgment result indicating that the duration after the first reaction unit recovers equilibrium is not greater than a first preset value, a continuous control instruction is sent to the carbon source dosing device and the aeration device in the first reaction unit.

5. A biological desulfurization system according to claim 4, characterized in that: The first reaction unit and the second reaction unit are adjacent to each other and are connected through a diversion channel. The first reaction unit and the second reaction unit are respectively provided with a desulfurization material concentration sensor that is communicatively connected to the edge intelligent control device; After determining whether the duration after the first reaction unit returns to equilibrium is greater than a first preset value, the method further includes: In response to the duration judgment result indicating that the duration after the first reaction unit recovers equilibrium is greater than a first preset value, sending an instruction to reduce the injection rate to the carbon source injection device of the first reaction unit; Obtaining the desulfurization material concentration of the first reaction unit and the desulfurization material concentration of the second reaction unit; Calculating a difference between a concentration of the desulfurized material in the first reaction unit and a concentration of the desulfurized material in the second reaction unit, and determining whether an absolute value of the difference is greater than a second preset value; In response to the absolute value of the difference being greater than the second preset value, an instruction for continuous operation is sent to the aeration device of the first reaction unit.

6. A biological desulfurization system according to claim 5, characterized in that: After calculating the difference between the desulfurization material concentration of the first reaction unit and the desulfurization material concentration of the second reaction unit and determining whether the absolute value of the difference is greater than a second preset value, the method further includes: If the absolute value of the difference is not greater than the second preset value, an instruction to reduce the aeration intensity is sent to the aeration device of the first reaction unit.

7. A biological desulfurization system according to claim 6, characterized in that: Obtain the corresponding desulfurization material trajectory, including: The flow sensor data of the diversion channel between the first reaction unit and the second reaction unit and the timing detection data of the desulfurization material concentration sensor are retrieved through the edge intelligent control device; Based on the moving direction of the concentration peak in the time series detection data and the flow rate in the flow data, the moving path of the desulfurized material after flowing out of the first reaction unit is fitted; The fitted movement path is compared with the preset unit boundary coordinates to generate a visual desulfurization material trajectory.

8. A biological desulfurization system according to claim 7, characterized in that: Sending a control instruction to the carbon source dosing device and the aeration device of the reaction unit corresponding to the concentration distribution diagram with a large coverage area includes: If the coverage area of ​​the concentration distribution diagram of the first reaction unit is larger than the coverage area of ​​the concentration distribution diagram of the second reaction unit, and the sulfur concentration deviation value of the first reaction unit is positive, an instruction to increase the dosing rate is sent to its carbon source dosing device, and an instruction to increase the aeration intensity is sent to the aeration device; If the coverage area of ​​the concentration distribution diagram of the second reaction unit is larger than that of the first reaction unit, and the bacterial activity deviation value of the second reaction unit is negative, an instruction to increase the addition rate is sent to its carbon source dosing device, and at the same time, an instruction to add desulfurization bacteria is sent to the bacterial dosing device.

9. A biological desulfurization system according to claim 8, characterized in that: Sending a continuous control instruction to the carbon source dosing device and the aeration device in the first reaction unit includes: Obtaining the carbon source dosage and aeration intensity when the first reaction unit returns to equilibrium as benchmark parameters; Sending a continuous dosing instruction to the carbon source dosing device to maintain the baseline parameters, and sending a continuous aeration instruction to the aeration device to maintain the baseline parameters; The sensor detects the desulfurization status in the primary reaction unit according to the preset detection cycle. If the status is stable, the instruction is maintained. If an imbalance trend occurs, the parameters are restored to the baseline.

10. A coordinated control method, applicable to a biological desulfurization system according to any one of claims 1 to 9, characterized in that: include: Based on the detection results of each sulfur concentration sensor and electrochemical sensor, the state information of the desulfurization system in each reaction unit is obtained; wherein the state information includes the sulfur concentration deviation value and the bacterial activity deviation value; According to the state information of the desulfurization system and the interactive relationship between the desulfurization materials of the first reaction unit and the second reaction unit, corresponding control instructions are sent to the carbon source dosing device and the aeration device according to a preset strategy.

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