Methods, devices, storage media, and processors for collecting bowl leak warnings

Abstract

This invention relates to the chemical industry and discloses a method, device, storage medium, and processor for early warning of leaks in a collection bowl. The method includes: acquiring real-time flue gas flow rate, real-time flue gas temperature, and real-time demister flushing water pressure; inputting the real-time flue gas flow rate, real-time flue gas temperature, and real-time demister flushing water pressure into a preset model to obtain the rate of change of the absorber tower liquid level when the collection bowl is not leaking; determining the leakage amount of the collection bowl based on the real-time rate of change of the absorber tower liquid level and the rate of change of the absorber tower liquid level when the collection bowl is not leaking; and issuing an early warning based on the leakage amount of the collection bowl. Based on the solution provided by the embodiments of this application, when a leak occurs in the collection bowl, it can be detected and an early warning can be issued in a timely manner, thereby enabling timely implementation of corresponding measures to ensure the water balance in the single-tower dual-circulation desulfurization system as much as possible.

Description

Technical Field

[0001] This invention relates to the field of chemical technology, specifically to a method for early warning of leaks in a collection bowl, a device for early warning of leaks in a collection bowl, a machine-readable storage medium, and a processor. Background Technology

[0002] With increasingly stringent environmental protection requirements, single-tower dual-cycle desulfurization systems are being widely used in flue gas desulfurization. In a single-tower dual-cycle desulfurization system, the absorber tower contains a spray layer corresponding to the AFT tower (i.e., the external slurry pool of the absorber tower). Inside the absorber tower, the slurry sprayed from this spray layer reacts with SO2 in the flue gas, then falls into a collection bowl through a guide cone. From there, it is transported to the AFT tower, and finally back to the corresponding spray layer inside the absorber tower, thus forming a slurry circulation route in the single-tower dual-cycle desulfurization system.

[0003] However, in actual operation, excessive slurry flow or corrosion and damage to the collection bowl can cause slurry to leak from the collection bowl into the absorber bottom. This results in slurry that should flow into the AFT tower flowing into the absorber bottom instead, disrupting the system's water balance and affecting the desulfurization effect. Summary of the Invention

[0004] The purpose of this invention is to overcome the problem in the prior art where slurry leakage from the collection bowl into the absorber tower disrupts the water balance of the single-tower dual-circulation desulfurization system, and to provide a method, device, storage medium, and processor for early warning of collection bowl leakage.

[0005] To achieve the above objectives, a first aspect of the present invention provides a method for early warning of leaking bowls, comprising:

[0006] Acquire real-time flue gas flow rate, real-time flue gas temperature, and real-time demister flushing water pressure;

[0007] The real-time flue gas flow rate, the real-time flue gas temperature, and the real-time demister flushing water pressure are input into a preset model to obtain the rate of change of the absorber liquid level under the condition that the collection bowl does not leak.

[0008] The leakage amount of the collection bowl is determined based on the real-time change rate of the absorber level and the change rate of the absorber level when there is no leakage in the collection bowl.

[0009] Early warning is issued based on the amount of leakage collected in the collection bowl.

[0010] In this embodiment of the application, the preset model is constructed based on the historical flue gas flow rate, historical flue gas temperature, historical demister flushing water pressure, and historical rate of change of absorber liquid level.

[0011] In this embodiment of the application, N circulating pumps are configured between the absorption tower and the external slurry tank. The determination of the leakage amount in the collection bowl based on the real-time change rate of the absorption tower liquid level and the change rate of the absorption tower liquid level when there is no leakage in the collection bowl includes:

[0012] With some of the circulating pumps in N circulating pumps in operation, the leakage amount of the collection bowl is determined based on the real-time change rate of the absorber level and the change rate of the absorber level when the collection bowl is not leaking, and the leakage amount corresponding to a single circulating pump is also determined.

[0013] Furthermore, when N circulating pumps are running, the leakage amount of the collection bowl is determined based on the real-time change rate of the absorber level and the change rate of the absorber level when the collection bowl is not leaking, and the leakage amount corresponding to a single circulating pump is also determined.

[0014] In this embodiment of the application, when some of the N circulation pumps are turned on, the leakage amount of the collection bowl is determined based on the following formula:

[0015] ΔV1=(ΔLabts1-ΔLabt1)×Sabt;

[0016] Wherein, ΔV1 represents the leakage of the collection bowl when some of the N circulating pumps are turned on, in meters. 3 / h; ΔLabts1 is the real-time rate of change of the absorber level, in m / h; ΔLabt1 is the rate of change of the absorber level when the collection bowl is leak-free, in m / h; Sabt is the cross-sectional area of ​​the absorber, in m². 2 ;

[0017] When some of the N circulating pumps are running, the leakage rate of a single circulating pump is determined based on the following formula:

[0018] ΔVsg1=ΔV1 / n;

[0019] Wherein, ΔVsg1 represents the leakage rate of a single circulating pump when some of the N circulating pumps are running, in meters. 3 / h; n is the number of partially activated circulating pumps out of N circulating pumps.

[0020] In this embodiment of the application, with N circulating pumps running, the leakage amount of the collection bowl is determined based on the following formula:

[0021] ΔV2=(ΔLabts2-ΔLabt2)×Sabt;

[0022] Wherein, ΔV2 is the leakage amount of the collection bowl when N circulating pumps are turned on, in meters. 3 / h; ΔLabts2 is the real-time rate of change of the absorber level, in m / h; ΔLabt2 is the rate of change of the absorber level when the collection bowl is leak-free, in m / h; Sabt is the cross-sectional area of ​​the absorber, in m². 2 ;

[0023] With N circulating pumps running, the leakage rate of a single circulating pump is determined based on the following formula:

[0024] ΔVsg2=ΔV2 / N;

[0025] Where ΔVsg2 represents the leakage rate of a single circulating pump when N circulating pumps are running, in meters. 3 / h.

[0026] In this embodiment of the application, the early warning based on the leakage amount of the collection bowl includes:

[0027] Based on the leakage amount of a single circulation pump when some of the N circulation pumps are turned on, and the leakage amount of a single circulation pump when all N circulation pumps are turned on, the leakage level of the collection bowl is determined, and an early warning is issued based on the leakage level of the collection bowl.

[0028] In this embodiment, the leakage level of the collection bowl is determined based on the following formula:

[0029] K = ΔVsg2 / ΔVsg1;

[0030] Where K is the leakage coefficient of the collection bowl, used to characterize the degree of leakage of the collection bowl; ΔVsg2 is the leakage amount corresponding to a single circulation pump when N circulation pumps are turned on, in meters. 3 / h; ΔVsg1 is the leakage rate of a single circulating pump when some of the N circulating pumps are running, in meters. 3 / h;

[0031] The warning system based on the leakage level of the collection bowl includes:

[0032] An early warning is issued if the leakage coefficient of the collection bowl is greater than the target leakage coefficient, or if the leakage of a single circulation pump is greater than the target leakage when some of the N circulation pumps are turned on.

[0033] A second aspect of the present invention provides a leak warning device for a collection bowl, comprising:

[0034] The acquisition module is used to acquire real-time flue gas flow rate, real-time flue gas temperature, and real-time demister flushing water pressure;

[0035] The prediction module is used to input the real-time flue gas flow rate, the real-time flue gas temperature, and the real-time demister flushing water pressure into a preset model to obtain the rate of change of the absorber liquid level under the condition that the collection bowl does not leak;

[0036] The leakage calculation module is used to determine the leakage amount of the collection bowl based on the real-time change rate of the absorber tower liquid level and the change rate of the absorber tower liquid level when there is no leakage in the collection bowl.

[0037] The early warning module is used to issue warnings based on the amount of leakage from the collection bowl.

[0038] A third aspect of this application provides a processor configured to perform the above-described collection bowl leakage early warning method.

[0039] A fourth aspect of this application provides a machine-readable storage medium storing instructions that, when executed by a processor, configure the processor to perform the aforementioned collection bowl leakage warning method.

[0040] The above technical solution includes: acquiring real-time flue gas flow rate, real-time flue gas temperature, and real-time demister flushing water pressure; inputting the real-time flue gas flow rate, real-time flue gas temperature, and real-time demister flushing water pressure into a preset model to obtain the rate of change of the absorber tower liquid level under the condition that the collection bowl does not leak; determining the leakage amount of the collection bowl based on the real-time rate of change of the absorber tower liquid level and the rate of change of the absorber tower liquid level under the condition that the collection bowl does not leak; and issuing an early warning based on the leakage amount of the collection bowl. Based on the solution provided in this application, when a leak occurs in the collection bowl, it can be detected and an early warning can be issued in a timely manner, thereby enabling timely implementation of corresponding measures to ensure the water balance in the single-tower dual-circulation desulfurization system as much as possible.

[0041] Other features and advantages of the embodiments of this application will be described in detail in the following detailed description section. Attached Figure Description

[0042] The accompanying drawings are provided to further illustrate the embodiments of this application and form part of the specification. They are used together with the following detailed description to explain the embodiments of this application, but do not constitute a limitation on the embodiments of this application. In the drawings:

[0043] Figure 1 The illustration shows a flowchart of a method for early warning of leaking bowls according to an embodiment of this application;

[0044] Figure 2 The schematic diagram illustrates a flow chart of another method for collecting bowl leakage warnings according to an embodiment of this application;

[0045] Figure 3 This schematic diagram illustrates a structural block diagram of a leak warning device for a collection bowl according to an embodiment of this application;

[0046] Figure 4 The diagram illustrates the internal structure of a computer device according to an embodiment of this application.

[0047] Explanation of reference numerals in the attached figures

[0048] 210 - Acquisition Module; 220 - Prediction Module; 230 - Leakage Calculation Module; 240 - Early Warning Module; A01 - Processor; A02 - Network Interface; A03 - Internal Memory; A04 - Display Screen; A05 - Input Device; A06 - Non-volatile Storage Medium; B01 - Operating System; B02 - Computer Program. Detailed Implementation

[0049] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only for illustration and explanation of the embodiments of this application and are not intended to limit the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0050] If the embodiments of this application involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed in this application.

[0051] As described in the background section, with increasingly stringent environmental protection requirements, single-tower dual-cycle desulfurization systems are being widely used in flue gas desulfurization. In a single-tower dual-cycle desulfurization system, the absorber tower contains a spray layer corresponding to the AFT tower (i.e., an external slurry pool outside the absorber tower). Inside the absorber tower, the slurry sprayed from this layer reacts with SO2 in the flue gas, then falls into a collection bowl through a guide cone. From there, it is transported to the AFT tower, and finally back to the corresponding spray layer inside the absorber tower, thus forming a slurry circulation route within the single-tower dual-cycle desulfurization system. However, in actual operation, the slurry flow rate may be too high, exceeding the guiding capacity of the guide cone. This causes some slurry to leak from the outer edge of the collection bowl and flow into the absorber tower bottom through the gap between the edge of the collection bowl and the inner wall of the absorber tower. Furthermore, the downward flow of the slurry usually has a significant impact force, which over time can cause corrosion and damage to the collection bowl, leading to slurry leakage from the collection bowl into the absorber tower bottom. Therefore, excessive slurry flow or corrosion / damage to the collection bowl can cause slurry to leak into the absorber bottom. This results in slurry that should flow into the AFT tower flowing into the absorber bottom instead, disrupting the system's water balance and affecting desulfurization efficiency. Current technology typically involves shutting down the system and purging the absorber, then manually inspecting the collection bowl for corrosion / damage. However, this method is ineffective in detecting leaks caused by high slurry flow. Clearly, when a leak occurs in the collection bowl, the above inspection methods are insufficient for timely detection and early warning, hindering the implementation of appropriate measures.

[0052] To address this, one embodiment of this application provides a method for early warning of bowl leakage, such as... Figure 1 As shown, the leak warning method for the collection bowl may include the following steps:

[0053] Step 101: Obtain real-time flue gas flow rate, real-time flue gas temperature, and real-time demister flushing water pressure.

[0054] The real-time flue gas flow rate and the real-time flue gas temperature can be measured at the flue gas inlet of the absorption tower.

[0055] Step 102: Input the real-time flue gas flow rate, the real-time flue gas temperature, and the real-time demister flushing water pressure into a preset model to obtain the rate of change of the absorber liquid level under the condition that the collection bowl does not leak.

[0056] The preset model can be used to characterize the relationship between the rate of change of the absorber tower liquid level and the flue gas flow rate, flue gas temperature, and demister flushing water pressure when the collection bowl is leak-free. Furthermore, after obtaining the real-time flue gas flow rate, real-time flue gas temperature, and real-time demister flushing water pressure under the current operating conditions, the rate of change of the absorber tower liquid level corresponding to the current flue gas flow rate, current flue gas temperature, and current demister flushing water pressure under the condition that the collection bowl is leak-free can be obtained based on this relationship; in other words, the rate of change of the absorber tower liquid level corresponding to the current operating conditions under the condition that the collection bowl is leak-free can be obtained.

[0057] Since the water removed during the dehydration of the gypsum slurry discharged from the absorption tower to form gypsum returns to the absorption tower, and the mass of limestone entering the absorption tower from the limestone slurry essentially cancels out the mass of the gypsum, the gypsum slurry discharged from the absorption tower has virtually no impact on the absorption tower's liquid level. In other words, assuming the collection bowl is leak-free, the change in the absorption tower's liquid level is mainly affected by the flue gas evaporation rate and the demister flushing water volume. The flue gas evaporation rate is related to the flue gas flow rate and temperature, while the demister flushing water volume is related to the demister flushing water pressure, which reflects the flushing frequency and water volume. Based on this, the embodiments of this application establish a correspondence between the flue gas flow rate, flue gas temperature, demister flushing water pressure, and the rate of change of the absorption tower's liquid level when the collection bowl is leak-free.

[0058] In practical implementation, the preset model can be constructed based on historical flue gas flow rate, historical flue gas temperature, historical demister flushing water pressure, and historical rate of change of absorber tower liquid level. Since the collection bowl typically does not leak within one to two months after system maintenance, the preset model can be established based on historical data from this period (including historical flue gas flow rate, historical flue gas temperature, historical demister flushing water pressure, and historical rate of change of absorber tower liquid level). It is understood that this preset model is a model of absorber tower liquid level changes assuming no leakage in the collection bowl. In practical applications, historical data for this period can be extracted from the DCS, and then the preset model can be obtained through neural network modeling.

[0059] In this embodiment, the rate of change of the absorber level under the condition that the collection bowl does not leak can be regarded as a function of flue gas flow rate, flue gas temperature and demister flushing water pressure, as shown in the following formula (1):

[0060] ΔLabt=f(Fin,Tin,Pm) (1);

[0061] In the above formula (1), ΔLabt is the rate of change of the absorber level under the condition that the collection bowl does not leak, with units of m / h; f() represents a function; Fin is the flue gas flow rate, with units of m³ / h. 3 / h; Tin is the flue gas temperature in °C; Pm is the demister flushing water pressure in MPa.

[0062] Step 103: Determine the leakage amount of the collection bowl based on the real-time change rate of the absorber level and the change rate of the absorber level when there is no leakage in the collection bowl.

[0063] The real-time change rate of the absorber level can be understood as the actual change rate of the absorber level under the current operating condition (specifically, the operating condition corresponding to when the collection bowl leaks). Meanwhile, the change rate of the absorber level when the collection bowl does not leak corresponds to the real-time flue gas flow rate, real-time flue gas temperature, and real-time demister flushing water pressure under the current operating condition, and can be obtained by inputting these parameters into the preset model.

[0064] It is understandable that step 103 determines the leakage amount of the collection bowl based on the actual rate of change of the absorber level when the collection bowl leaks and the rate of change of the absorber level when the collection bowl does not leak.

[0065] In practical applications, multiple circulation pumps are typically installed between the AFT tower and the absorption tower, each corresponding to a different circulation branch. The slurry in the AFT tower circulates to the absorption tower through these circulation branches. The flow rate of one circulation pump is typically 5000 m³ / s. 3 / h-10000m 3 Generally speaking, the more circulation pumps started, the more circulation branches are opened, and the more slurry is transported from the AFT tower to the absorption tower. Considering that the amount of leakage in the collection bowl is also related to the number of circulation pumps started, when a leakage occurs in the collection bowl, the more circulation pumps started, the greater the potential leakage.

[0066] Taking a scenario where three circulating pumps are configured between the AFT tower and the absorption tower as an example, theoretically, the design parameters of the guide cone should meet the slurry flow load required for all three pumps to start. However, with prolonged use, the guide cone will scale and deform, resulting in a decreased flow guiding effect and no longer meeting the slurry flow load required for all three pumps to start. Assuming the current guide cone can only meet the slurry flow load required for one pump to start, the more pumps that start, the greater the slurry leakage.

[0067] Therefore, in order to achieve more accurate early warning, in the collection bowl leakage early warning method provided in this application embodiment, N circulating pumps are configured between the AFT tower and the absorption tower, such as... Figure 2As shown, step 103 may specifically include step 1031: when some of the N circulating pumps are turned on, determine the leakage amount of the collection bowl based on the real-time change rate of the absorber tower liquid level and the change rate of the absorber tower liquid level when the collection bowl is not leaking, and determine the leakage amount corresponding to a single circulating pump; and, when N circulating pumps are turned on, determine the leakage amount of the collection bowl based on the real-time change rate of the absorber tower liquid level and the change rate of the absorber tower liquid level when the collection bowl is not leaking, and determine the leakage amount corresponding to a single circulating pump. The leakage amount corresponding to a single circulating pump can also be referred to as the leakage amount generated by a single circulating pump.

[0068] That is, it can be understood as follows: In the first time period, some of the N circulating pumps are turned on to obtain real-time flue gas flow rate, real-time flue gas temperature, and real-time demister flushing water pressure. These real-time flue gas flow rate, temperature, and pressure are input into a preset model to obtain the rate of change of the absorber tower liquid level under the condition that the collection bowl is not leaking. Based on the real-time rate of change of the absorber tower liquid level and the rate of change of the absorber tower liquid level under the condition that the collection bowl is not leaking, the leakage amount of the collection bowl is determined, and then the leakage amount corresponding to a single circulating pump is further determined. Similarly, in the second time period, N circulating pumps are turned on to obtain real-time flue gas flow rate, temperature, and pressure of the demister flushing water. These real-time flue gas flow rate, temperature, and pressure are input into a preset model to obtain the rate of change of the absorber tower liquid level under the condition that the collection bowl is not leaking. Based on the real-time rate of change of the absorber tower liquid level and the rate of change of the absorber tower liquid level under the condition that the collection bowl is not leaking, the leakage amount of the collection bowl is determined, and then the leakage amount corresponding to a single circulating pump is further determined.

[0069] Among them, when some of the N circulating pumps are turned on, the leakage of the collection bowl can be determined based on the following formula (2):

[0070] ΔV1=(ΔLabts1-ΔLabt1)×Sabt (2);

[0071] In formula (2) above, ΔV1 is the leakage of the collection bowl when some of the N circulating pumps are turned on, and the unit is m. 3 / h; ΔLabts1 is the real-time rate of change of the absorber level, in m / h; ΔLabt1 is the rate of change of the absorber level when the collection bowl is leak-free, in m / h; Sabt is the cross-sectional area of ​​the absorber, in m². 2 The cross-sectional area of ​​the absorption tower, Sabt, is usually a known fixed value that can be obtained from the design parameters of the absorption tower.

[0072] Furthermore, when some of the N circulating pumps are turned on, the leakage rate of a single circulating pump can be determined based on the following formula (3):

[0073] ΔVsg1=ΔV1 / n (3);

[0074] In the above formula (3), ΔVsg1 is the leakage amount of a single circulating pump when some of the circulating pumps out of N circulating pumps are turned on, and the unit is m. 3 / h; n is the number of partially activated circulating pumps out of N circulating pumps.

[0075] Similarly, with N circulating pumps running, the leakage of the collection bowl can be determined based on the following formula (4):

[0076] ΔV2=(ΔLabts2-ΔLabt2)×Sabt (4);

[0077] In the above formula (4), ΔV2 is the leakage of the collection bowl when N circulating pumps are turned on, and the unit is m. 3 / h; ΔLabts2 is the real-time rate of change of the absorber level, in m / h; ΔLabt2 is the rate of change of the absorber level when the collection bowl is leak-free, in m / h; Sabt is the cross-sectional area of ​​the absorber, in m². 2 .

[0078] Furthermore, when N circulating pumps are running, the leakage rate of a single circulating pump can be determined based on the following formula (5):

[0079] ΔVsg2=ΔV2 / N (5);

[0080] In the above formula (5), ΔVsg2 is the leakage rate of a single circulating pump when N circulating pumps are running, and the unit is m. 3 / h.

[0081] In practical applications, a demister is typically installed above the spray layer of the AFT tower within the absorption tower. The flushing water flow rate of this demister is generally 100 m³ / h. 3 / h-200m 3 / h is much smaller than the flow rate of a single circulating pump, so its impact on the leakage of the collection bowl can be ignored.

[0082] Step 104: Issue an early warning based on the leakage amount in the collection bowl.

[0083] In practice, the leakage amount in the collection bowl can be compared with a preset leakage threshold to provide an early warning.

[0084] However, considering that the amount of leakage in the collection bowl is also related to the number of circulating pumps activated, in order to further measure the extent of leakage in the collection bowl and provide more accurate early warnings, such as... Figure 2As shown, step 104 may specifically include step 1041, which determines the leakage level of the collection bowl based on the leakage amount of a single circulation pump when some circulation pumps are turned on and the leakage amount of a single circulation pump when all N circulation pumps are turned on, and provides an early warning based on the leakage level of the collection bowl.

[0085] In this embodiment of the application, the degree of leakage of the collection bowl can be determined based on the following formula (6):

[0086] K = ΔVsg2 / ΔVsg1 (6);

[0087] In the above formula (6), K is the leakage coefficient of the collection bowl, which can be used to characterize the degree of leakage of the collection bowl.

[0088] When issuing warnings based on the leakage level of the collection bowl, a target leakage coefficient can be set. A warning is issued when the leakage coefficient of the collection bowl exceeds the target coefficient. Simultaneously, a target leakage amount can be set; a warning is issued when ΔVsg1 exceeds the target leakage amount. A leakage coefficient greater than the target leakage coefficient indicates a relatively severe leakage in the collection bowl, signifying a high degree of leakage. If, with some of the N circulation pumps operating, the leakage amount of a single circulation pump exceeds the target leakage amount, it indicates that even with only some pumps operating, a significant leakage occurs, further suggesting a relatively severe and high degree of leakage in the collection bowl.

[0089] That is, issuing an early warning based on the leakage level of the collection bowl can include: issuing an early warning in response to the leakage coefficient of the collection bowl being greater than the target leakage coefficient, or in response to the leakage amount of a single circulation pump being greater than the target leakage amount when some of the circulation pumps in N circulation pumps are turned on.

[0090] Taking a configuration of three circulating pumps between the AFT tower and the absorption tower as an example, the leakage amount ΔVsg1 corresponding to a single circulating pump when one or two circulating pumps are turned on can be calculated based on formulas (2) and (3). When ΔVsg1 is greater than the target leakage amount, an early warning is issued. If ΔVsg1 is not greater than the target leakage amount, the leakage amount ΔVsg2 corresponding to a single circulating pump when three circulating pumps are turned on can be calculated based on formulas (4) and (5). Then, the leakage coefficient K of the collection bowl is calculated based on formula (6). When the leakage coefficient K of the collection bowl is greater than the target leakage coefficient, an early warning is issued.

[0091] In practical applications, both the target leakage coefficient and the target leakage amount can be set according to the actual situation and expert experience. For example, the target leakage coefficient can be 1.1.

[0092] Once an early warning is issued, operators can adjust the operating mode, such as increasing the number or power of the circulating pumps corresponding to the slurry in the absorber bottom, and reducing the number of circulating pumps started between the AFT tower and the absorber, thereby preventing the absorber level from rising too high and avoiding absorber overflow.

[0093] It is understood that the collection bowl leakage early warning method provided in the above embodiments of this application includes: acquiring real-time flue gas flow rate, real-time flue gas temperature, and real-time demister flushing water pressure; inputting the real-time flue gas flow rate, real-time flue gas temperature, and real-time demister flushing water pressure into a preset model to obtain the rate of change of the absorber tower liquid level when the collection bowl does not leak; determining the leakage amount of the collection bowl based on the real-time rate of change of the absorber tower liquid level and the rate of change of the absorber tower liquid level when the collection bowl does not leak; and issuing an early warning based on the leakage amount of the collection bowl. Based on the solution provided in the embodiments of this application, when the collection bowl leaks, it can be detected and an early warning can be issued in a timely manner, so that corresponding measures can be taken in a timely manner to ensure the water balance in the single-tower dual-circulation desulfurization system as much as possible. That is, measures can be taken in advance before the water balance is disrupted to avoid further deterioration of the situation.

[0094] Furthermore, in the prior art, leakage in the collection bowl caused by a large slurry flow rate exceeding the guiding capacity of the guide cone is difficult to detect. However, the solution provided by the above embodiments of this application can not only detect leakage in the collection bowl caused by corrosion and damage in a timely manner and provide early warning, but also detect leakage in the collection bowl caused by a large slurry flow rate exceeding the guiding capacity of the guide cone and provide early warning, thereby further ensuring the water balance in the single-tower dual-circulation desulfurization system.

[0095] On the other hand, based on the solution provided in this application, the leakage situation of the collection bowl can be monitored in real time, which facilitates the reasonable scheduling of downtime for maintenance to address the defects.

[0096] Based on the same inventive concept, such as Figure 3 As shown, Figure 3 This schematically illustrates a structural block diagram of a collection bowl leakage early warning device according to an embodiment of the present application. In one embodiment, a collection bowl leakage early warning device 200 is provided, including an acquisition module 210, a prediction module 220, a leakage calculation module 230, and an early warning module 240, wherein:

[0097] The acquisition module 210 is used to acquire real-time flue gas flow rate, real-time flue gas temperature and real-time demister flushing water pressure;

[0098] Prediction module 220 is used to input the real-time flue gas flow rate, the real-time flue gas temperature, and the real-time demister flushing water pressure into a preset model to obtain the rate of change of the absorber liquid level under the condition that the collection bowl does not leak;

[0099] The leakage calculation module 230 is used to determine the leakage amount of the collection bowl based on the real-time change rate of the absorber tower liquid level and the change rate of the absorber tower liquid level when there is no leakage in the collection bowl.

[0100] The early warning module 240 is used to issue early warnings based on the amount of leakage from the collection bowl.

[0101] In one embodiment, the preset model is constructed based on historical flue gas flow rate, historical flue gas temperature, historical demister flushing water pressure, and historical rate of change of absorber level.

[0102] In one embodiment, N circulating pumps are configured between the absorption tower and the external slurry tank of the absorption tower. The leakage calculation module 230 is used to determine the leakage of the collection bowl based on the real-time change rate of the liquid level of the absorption tower and the change rate of the liquid level of the absorption tower when there is no leakage in the collection bowl, when some of the N circulating pumps are turned on. It also determines the leakage of a single circulating pump.

[0103] Furthermore, when N circulating pumps are running, the leakage amount of the collection bowl is determined based on the real-time change rate of the absorber level and the change rate of the absorber level when the collection bowl is not leaking, and the leakage amount corresponding to a single circulating pump is also determined.

[0104] In one embodiment, when some of the N circulation pumps are activated, the leakage calculation module 230 is used to determine the leakage of the collection bowl based on the following formula:

[0105] ΔV1=(ΔLabts1-ΔLabt1)×Sabt;

[0106] Wherein, ΔV1 represents the leakage of the collection bowl when some of the N circulating pumps are turned on, in meters. 3 / h; ΔLabts1 is the real-time rate of change of the absorber level, in m / h; ΔLabt1 is the rate of change of the absorber level when the collection bowl is leak-free, in m / h; Sabt is the cross-sectional area of ​​the absorber, in m². 2 ;

[0107] When some of the N circulating pumps are activated, the leakage calculation module 230 is used to determine the leakage amount corresponding to a single circulating pump based on the following formula:

[0108] ΔVsg1=ΔV1 / n;

[0109] Wherein, ΔVsg1 represents the leakage rate of a single circulating pump when some of the N circulating pumps are running, in meters. 3 / h; n is the number of partially activated circulating pumps out of N circulating pumps.

[0110] In one embodiment, with N circulation pumps activated, the leakage calculation module 230 is used to determine the leakage amount of the collection bowl based on the following formula:

[0111] ΔV2=(ΔLabts2-ΔLabt2)×Sabt;

[0112] Wherein, ΔV2 is the leakage amount of the collection bowl when N circulating pumps are turned on, in meters. 3 / h; ΔLabts2 is the real-time rate of change of the absorber level, in m / h; ΔLabt2 is the rate of change of the absorber level when the collection bowl is leak-free, in m / h; Sabt is the cross-sectional area of ​​the absorber, in m². 2 ;

[0113] With N circulating pumps in operation, the leakage calculation module 230 is used to determine the leakage amount corresponding to a single circulating pump based on the following formula:

[0114] ΔVsg2=ΔV2 / N;

[0115] Where ΔVsg2 represents the leakage rate of a single circulating pump when N circulating pumps are running, in meters. 3 / h.

[0116] In one embodiment, the early warning module 240 is used to determine the leakage level of the collection bowl based on the leakage amount of a single circulation pump when some circulation pumps of N circulation pumps are turned on and the leakage amount of a single circulation pump when N circulation pumps are turned on, and to issue an early warning based on the leakage level of the collection bowl.

[0117] In one embodiment, the early warning module 2,40 is used to determine the degree of leakage in the collection bowl based on the following formula:

[0118] K = ΔVsg2 / ΔVsg1;

[0119] Where K is the leakage coefficient of the collection bowl, used to characterize the degree of leakage of the collection bowl; ΔVsg2 is the leakage amount corresponding to a single circulation pump when N circulation pumps are turned on, in meters. 3 / h; ΔVsg1 is the leakage rate of a single circulating pump when some of the N circulating pumps are running, in meters. 3 / h;

[0120] An early warning is issued if the leakage coefficient of the collection bowl is greater than the target leakage coefficient, or if the leakage of a single circulation pump is greater than the target leakage when some of the N circulation pumps are turned on.

[0121] The collection bowl leakage early warning device includes a processor and a memory. The acquisition module 210, prediction module 220, leakage calculation module 230 and early warning module 240 are all stored as program units in the memory. The processor executes the program modules stored in the memory to implement the corresponding functions.

[0122] The processor contains a core, which retrieves the corresponding program unit from memory. One or more cores can be configured, and by adjusting the core parameters, fast and efficient modeling and computation can be achieved at the entire chip scale.

[0123] The memory may include non-permanent memory in computer-readable media, such as random access memory (RAM) and / or non-volatile memory, such as read-only memory (ROM) or flash RAM, and the memory includes at least one memory chip.

[0124] This application provides a machine-readable storage medium storing a program that, when executed by a processor, implements the aforementioned method for early warning of leaks in a collection bowl.

[0125] In one embodiment, a computer device is provided, which may be a terminal, and its internal structure diagram may be as follows: Figure 4 As shown in the figure, the computer device includes a processor A01, a network interface A02, a display screen A04, an input device A05, and a memory (not shown) connected via a system bus. The processor A01 provides computing and control capabilities. The memory includes internal memory A03 and a non-volatile storage medium A06. The non-volatile storage medium A06 stores an operating system B01 and a computer program B02. The internal memory A03 provides an environment for the operation of the operating system B01 and the computer program B02 stored in the non-volatile storage medium A06. The network interface A02 is used for communication with external terminals via a network connection. When the computer program is executed by the processor A01, it implements a method for early warning of water leakage. The display screen A04 can be an LCD screen or an e-ink display screen. The input device A05 can be a touch layer covering the display screen, buttons, a trackball, or a touchpad mounted on the computer device casing, or an external keyboard, touchpad, or mouse.

[0126] Those skilled in the art will understand that Figure 4 The structure shown is merely a block diagram of a portion of the structure related to the present application and does not constitute a limitation on the computer device to which the present application is applied. Specific computer devices may include more or fewer components than those shown in the figure, or combine certain components, or have different component arrangements.

[0127] In one embodiment, the collection bowl leakage early warning device provided in this application can be implemented as a computer program, which can be implemented in the form of, for example... Figure 4 The computer device shown runs on this system. The computer device's memory can store the various program modules that make up the intelligent scheduling device for this construction task, for example... Figure 3 The diagram shows the acquisition module 210, prediction module 220, leakage calculation module 230, and early warning module 240. The computer program comprised of these modules causes the processor to execute the steps in the collection bowl leakage early warning method of the various embodiments of this application described in this specification.

[0128] Figure 4 The computer equipment shown can be used as follows Figure 3 The execution method of the acquisition module 210, prediction module 220, leakage calculation module 230 and early warning module 240 in the leakage early warning device of the collection bowl shown.

[0129] This application provides a device, which includes a processor, a memory, and a program stored in the memory and executable on the processor. When the processor executes the program, it performs the following steps:

[0130] Acquire real-time flue gas flow rate, real-time flue gas temperature, and real-time demister flushing water pressure;

[0131] The real-time flue gas flow rate, the real-time flue gas temperature, and the real-time demister flushing water pressure are input into a preset model to obtain the rate of change of the absorber liquid level under the condition that the collection bowl does not leak.

[0132] The leakage amount of the collection bowl is determined based on the real-time change rate of the absorber level and the change rate of the absorber level when there is no leakage in the collection bowl.

[0133] Early warning is issued based on the amount of leakage collected in the collection bowl.

[0134] In one embodiment, the preset model is constructed based on historical flue gas flow rate, historical flue gas temperature, historical demister flushing water pressure, and historical rate of change of absorber level.

[0135] In one embodiment, N circulating pumps are configured between the absorber and the external slurry tank. The determination of the leakage amount in the collection bowl based on the real-time change rate of the absorber's liquid level and the change rate of the absorber's liquid level when there is no leakage includes:

[0136] With some of the circulating pumps in N circulating pumps in operation, the leakage amount of the collection bowl is determined based on the real-time change rate of the absorber level and the change rate of the absorber level when the collection bowl is not leaking, and the leakage amount corresponding to a single circulating pump is also determined.

[0137] Furthermore, when N circulating pumps are running, the leakage amount of the collection bowl is determined based on the real-time change rate of the absorber level and the change rate of the absorber level when the collection bowl is not leaking, and the leakage amount corresponding to a single circulating pump is also determined.

[0138] In one embodiment, when some of the N circulation pumps are activated, the leakage amount of the collection bowl is determined based on the following formula:

[0139] ΔV1=(ΔLabts1-ΔLabt1)×Sabt;

[0140] Wherein, ΔV1 represents the leakage of the collection bowl when some of the N circulating pumps are turned on, in meters. 3 / h; ΔLabts1 is the real-time rate of change of the absorber level, in m / h; ΔLabt1 is the rate of change of the absorber level when the collection bowl is leak-free, in m / h; Sabt is the cross-sectional area of ​​the absorber, in m². 2 ;

[0141] When some of the N circulating pumps are running, the leakage rate of a single circulating pump is determined based on the following formula:

[0142] ΔVsg1=ΔV1 / n;

[0143] Wherein, ΔVsg1 represents the leakage rate of a single circulating pump when some of the N circulating pumps are running, in meters. 3 / h; n is the number of partially activated circulating pumps out of N circulating pumps.

[0144] In one embodiment, with N circulation pumps activated, the leakage amount of the collection bowl is determined based on the following formula:

[0145] ΔV2=(ΔLabts2-ΔLabt2)×Sabt;

[0146] Wherein, ΔV2 is the leakage amount of the collection bowl when N circulating pumps are turned on, in meters. 3 / h; ΔLabts2 is the real-time rate of change of the absorber level, in m / h; ΔLabt2 is the rate of change of the absorber level when the collection bowl is leak-free, in m / h; Sabt is the cross-sectional area of ​​the absorber, in m². 2 ;

[0147] With N circulating pumps running, the leakage rate of a single circulating pump is determined based on the following formula:

[0148] ΔVsg2=ΔV2 / N;

[0149] Where ΔVsg2 represents the leakage rate of a single circulating pump when N circulating pumps are running, in meters. 3 / h.

[0150] In one embodiment, the early warning based on the leakage amount of the collection bowl includes:

[0151] Based on the leakage amount of a single circulation pump when some of the N circulation pumps are turned on, and the leakage amount of a single circulation pump when all N circulation pumps are turned on, the leakage level of the collection bowl is determined, and an early warning is issued based on the leakage level of the collection bowl.

[0152] In one embodiment, the degree of leakage in the collection bowl is determined based on the following formula:

[0153] K = ΔVsg2 / ΔVsg1;

[0154] Where K is the leakage coefficient of the collection bowl, used to characterize the degree of leakage of the collection bowl; ΔVsg2 is the leakage amount corresponding to a single circulation pump when N circulation pumps are turned on, in meters. 3 / h; ΔVsg1 is the leakage rate of a single circulating pump when some of the N circulating pumps are running, in meters. 3 / h;

[0155] The warning system based on the leakage level of the collection bowl includes:

[0156] An early warning is issued if the leakage coefficient of the collection bowl is greater than the target leakage coefficient, or if the leakage of a single circulation pump is greater than the target leakage when some of the N circulation pumps are turned on.

[0157] Those skilled in the art will understand that embodiments of this application can be provided as methods, systems, or computer program products. Therefore, this application can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, this application can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0158] This application is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of this application. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the flowchart... Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0159] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0160] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0161] In a typical configuration, a computing device includes one or more processors (CPU), input / output interfaces, network interfaces, and memory.

[0162] Memory may include non-persistent memory in computer-readable media, such as random access memory (RAM) and / or non-volatile memory, such as read-only memory (ROM) or flash RAM. Memory is an example of computer-readable media.

[0163] Computer-readable media include both permanent and non-permanent, removable and non-removable media, which can store information using any method or technology. Information can be computer-readable instructions, data structures, modules of programs, or other data. Examples of computer storage media include, but are not limited to, phase-change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technologies, CD-ROM, digital versatile optical disc (DVD) or other optical storage, magnetic tape, magnetic magnetic disk storage or other magnetic storage devices, or any other non-transferable medium that can be used to store information accessible by a computing device. As defined herein, computer-readable media does not include transient computer-readable media, such as modulated data signals and carrier waves.

[0164] It should also be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0165] The above are merely embodiments of this application and are not intended to limit the scope of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of the claims of this application.

Claims

1. A method for early warning of leaks in a collection bowl, characterized in that, include: Acquire real-time flue gas flow rate, real-time flue gas temperature, and real-time demister flushing water pressure; The real-time flue gas flow rate, the real-time flue gas temperature, and the real-time demister flushing water pressure are input into a preset model to obtain the rate of change of the absorber liquid level under the condition that the collection bowl does not leak. The leakage amount of the collection bowl is determined based on the real-time change rate of the absorber level and the change rate of the absorber level when there is no leakage in the collection bowl. Early warning based on leakage volume in the collection bowl; N circulating pumps are installed between the absorption tower and the external slurry tank. The determination of the leakage amount in the collection bowl based on the real-time change rate of the absorption tower liquid level and the change rate of the absorption tower liquid level when there is no leakage includes: With some of the N circulating pumps running, the leakage amount of the collection bowl is determined based on the real-time change rate of the absorber level and the change rate of the absorber level when the collection bowl is not leaking, and the leakage amount corresponding to a single circulating pump is also determined; and with all N circulating pumps running, the leakage amount of the collection bowl is determined based on the real-time change rate of the absorber level and the change rate of the absorber level when the collection bowl is not leaking, and the leakage amount corresponding to a single circulating pump is also determined. The early warning system based on the leakage amount in the collection bowl includes: If, when some of the N circulating pumps are activated, the leakage rate of a single circulating pump exceeds the target leakage rate, an early warning is issued. If, when some of the N circulating pumps are activated, the leakage rate of a single circulating pump does not exceed the target leakage rate, then the leakage coefficient of the collection bowl is determined based on the leakage rates of a single circulating pump when some of the N circulating pumps are activated and the leakage rates of a single circulating pump when all N circulating pumps are activated. When the leakage coefficient exceeds the target leakage coefficient, an early warning is issued.

2. The method for early warning of leakage in a collection bowl according to claim 1, characterized in that, The preset model is constructed based on historical flue gas flow rate, historical flue gas temperature, historical demister flushing water pressure, and historical rate of change of absorber liquid level.

3. The method for early warning of leakage in a collection bowl according to claim 1, characterized in that, With some of the N circulating pumps running, the leakage rate of the collection bowl is determined based on the following formula: ΔV1=(ΔLabts1-ΔLabt1)×Sabt; Wherein, ΔV1 represents the leakage of the collection bowl when some of the N circulating pumps are turned on, in meters. 3 / h; ΔLabts1 is the real-time rate of change of the absorber level, in m / h; ΔLabt1 is the rate of change of the absorber level when the collection bowl is leak-free, in m / h; Sabt is the cross-sectional area of ​​the absorber, in m². 2 ; When some of the N circulating pumps are running, the leakage rate of a single circulating pump is determined based on the following formula: ΔVsg1=ΔV1 / n; Wherein, ΔVsg1 represents the leakage rate of a single circulating pump when some of the N circulating pumps are running, in meters. 3 / h; n is the number of partially activated circulating pumps out of N circulating pumps.

4. The method for early warning of leakage in a collection bowl according to claim 1, characterized in that, With N circulating pumps running, the leakage rate of the collection bowl is determined based on the following formula: ΔV2=(ΔLabts2-ΔLabt2)×Sabt; Wherein, ΔV2 is the leakage amount of the collection bowl when N circulating pumps are turned on, in meters. 3 / h; ΔLabts2 is the real-time rate of change of the absorber level, in m / h; ΔLabt2 is the rate of change of the absorber level when the collection bowl is leak-free, in m / h; Sabt is the cross-sectional area of ​​the absorber, in m². 2 ; With N circulating pumps running, the leakage rate of a single circulating pump is determined based on the following formula: ΔVsg2=ΔV2 / N; Where ΔVsg2 represents the leakage rate of a single circulating pump when N circulating pumps are running, in meters. 3 / h.

5. The method for early warning of leakage in a collection bowl according to claim 1, characterized in that, The leakage coefficient of the collection bowl is determined based on the following formula: K = ΔVsg2 / ΔVsg1; Where K is the leakage coefficient of the collection bowl, used to characterize the degree of leakage of the collection bowl; ΔVsg2 is the leakage amount corresponding to a single circulation pump when N circulation pumps are turned on, in meters. 3 / h; ΔVsg1 is the leakage rate of a single circulating pump when some of the N circulating pumps are running, in m³. 3 / h.

6. A leak warning device for a collection bowl, characterized in that, include: The acquisition module is used to acquire real-time flue gas flow rate, real-time flue gas temperature, and real-time demister flushing water pressure; The prediction module is used to input the real-time flue gas flow rate, the real-time flue gas temperature, and the real-time demister flushing water pressure into a preset model to obtain the rate of change of the absorber liquid level under the condition that the collection bowl does not leak; The leakage calculation module is used to determine the leakage amount of the collection bowl based on the real-time change rate of the absorber tower liquid level and the change rate of the absorber tower liquid level when there is no leakage in the collection bowl. The early warning module is used to issue warnings based on the amount of leakage from the collection bowl; N circulating pumps are installed between the absorption tower and the external slurry tank. The determination of the leakage amount in the collection bowl based on the real-time change rate of the absorption tower liquid level and the change rate of the absorption tower liquid level when there is no leakage includes: With some of the N circulating pumps running, the leakage amount of the collection bowl is determined based on the real-time change rate of the absorber level and the change rate of the absorber level when the collection bowl is not leaking, and the leakage amount corresponding to a single circulating pump is also determined; and with all N circulating pumps running, the leakage amount of the collection bowl is determined based on the real-time change rate of the absorber level and the change rate of the absorber level when the collection bowl is not leaking, and the leakage amount corresponding to a single circulating pump is also determined. The early warning system based on the leakage amount in the collection bowl includes: If, when some of the N circulating pumps are activated, the leakage rate of a single circulating pump exceeds the target leakage rate, an early warning is issued. If, when some of the N circulating pumps are activated, the leakage rate of a single circulating pump does not exceed the target leakage rate, then the leakage coefficient of the collection bowl is determined based on the leakage rates of a single circulating pump when some of the N circulating pumps are activated and the leakage rates of a single circulating pump when all N circulating pumps are activated. When the leakage coefficient exceeds the target leakage coefficient, an early warning is issued.

7. A processor, characterized in that, It is configured to perform the collection bowl leakage early warning method according to any one of claims 1 to 5.

8. A machine-readable storage medium storing instructions thereon, characterized in that, When executed by the processor, the instruction causes the processor to be configured to perform the collection bowl leakage warning method according to any one of claims 1 to 5.

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