Collection bowl leakage early warning method and device, storage medium and processor

Abstract

The invention relates to the field of chemical engineering, and discloses a collection bowl leakage early warning method and device, a storage medium and a processor, and the method comprises the steps: obtaining the real-time flue gas flow, the real-time flue gas temperature and the real-time demister washing water pressure; inputting the real-time flue gas flow, the real-time flue gas temperature and the real-time demister washing water pressure into a preset model to obtain the change rate of the liquid level of the absorption tower under the condition that a collection bowl does not leak; based on the real-time change rate of the absorption tower liquid level and the change rate of the absorption tower liquid level under the condition that the collection bowl does not leak, the leakage rate of the collection bowl is determined; and performing early warning based on the leakage rate of the collection bowl. Based on the scheme provided by the embodiment of the invention, when the collecting bowl leaks, the leakage can be found in time and early warning can be carried out, so that corresponding measures can be taken in time, and the water balance in the single-tower double-circulation desulfurization system can be ensured as much as possible.

Description

Technical Field

[0001] The present invention relates to the field of chemical technology, and in particular to a collection bowl leakage early warning method, a collection bowl leakage early warning device, a machine-readable storage medium and a processor. Background Art

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

[0003] However, in actual operation, excessive slurry flow or corrosion and damage of the collecting bowl will cause the slurry in the collecting bowl to leak into the absorber kettle. As a result, the slurry that should flow into the AFT tower flows into the absorber kettle, causing the water balance of the system to be destroyed and affecting the desulfurization effect. Summary of the invention

[0004] The purpose of the present invention is to overcome the problem in the prior art that the slurry in the collecting bowl leaks into the absorption tower kettle, resulting in the destruction of the water balance of the single-tower double-circulation desulfurization system, and to provide a collecting bowl leakage warning method, device, storage medium and processor.

[0005] In order to achieve the above object, the present invention provides a collection bowl leakage early warning method in a first aspect, comprising:

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

[0007] The real-time flue gas flow, 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 absorption tower liquid level when there is no leakage in the collecting bowl;

[0008] Determine the leakage amount of the collecting bowl based on the real-time change rate of the liquid level in the absorber and the change rate of the liquid level in the absorber when the collecting bowl is not leaking;

[0009] Early warning based on leakage from collection bowl.

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

[0011] In the embodiment of the present application, N circulating pumps are arranged between the absorption tower and the external slurry pool of the absorption tower. The method of determining the leakage amount of the collecting 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 the collecting bowl is not leaking includes:

[0012] When some of the N circulating pumps are turned on, the leakage of the collecting bowl is determined based on the real-time change rate of the liquid level in the absorber and the change rate of the liquid level in the absorber when there is no leakage in the collecting bowl, and the leakage corresponding to a single circulating pump is determined;

[0013] Also, when N circulating pumps are turned on, the leakage amount of the collecting bowl is determined 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 collecting bowl, and the leakage amount corresponding to a single circulating pump is determined.

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

[0015] ΔV1=(ΔLabts1-ΔLabt1)×Sabt;

[0016] Among them, ΔV1 is the leakage of the collecting 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 absorption tower liquid level, in m / h; ΔLabt1 is the rate of change of the absorption tower liquid level when there is no leakage in the collection bowl, in m / h; Sabt is the cross-sectional area of ​​the absorption tower, in m 2 ;

[0017] When some of the N circulating pumps are turned on, the leakage amount corresponding to a single circulating pump is determined based on the following formula:

[0018] ΔVsg1=ΔV1 / n;

[0019] Among them, ΔVsg1 is the leakage of a single circulating pump when some of the N circulating pumps are turned on, and the unit is m 3 / h; n is the number of circulating pumps that are turned on among N circulating pumps.

[0020] In the embodiment of the present application, when N circulation pumps are turned on, the leakage amount of the collection bowl is determined based on the following formula:

[0021] ΔV2=(ΔLabts2-ΔLabt2)×Sabt;

[0022] Among them, 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 absorption tower liquid level, in m / h; ΔLabt2 is the rate of change of the absorption tower liquid level when there is no leakage in the collection bowl, in m / h; Sabt is the cross-sectional area of ​​the absorption tower, in m 2 ;

[0023] When N circulating pumps are turned on, the leakage amount corresponding to a single circulating pump is determined based on the following formula:

[0024] ΔVsg2=ΔV2 / N;

[0025] Among them, ΔVsg2 is the leakage of a single circulating pump when N circulating pumps are turned on, and the unit is m 3 / h.

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

[0027] Based on the leakage amount corresponding to a single circulating pump when some of the N circulating pumps are turned on and the leakage amount corresponding to a single circulating pump when the N circulating pumps are turned on, the leakage degree of the collecting bowl is determined, and an early warning is issued based on the leakage degree of the collecting bowl.

[0028] In the embodiment of the present application, the leakage degree 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, which is used to characterize the leakage degree of the collection bowl; ΔVsg2 is the leakage amount corresponding to a single circulation pump when N circulation pumps are turned on, in units of m 3 / h; ΔVsg1 is the leakage of a single circulating pump when some of the N circulating pumps are turned on, in m 3 / h;

[0031] The early warning based on the leakage degree of the collection bowl includes:

[0032] In response to the leakage coefficient of the collection bowl being greater than the target leakage coefficient, or the leakage amount corresponding to a single circulation pump being greater than the target leakage amount when some of the N circulation pumps are turned on, an early warning is issued.

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

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

[0035] A prediction module, used for inputting the real-time flue gas flow, the real-time flue gas temperature, and the real-time demister flushing water pressure into a preset model to obtain a change rate of the absorption tower liquid level when there is no leakage in the collecting bowl;

[0036] A leakage calculation module, used to determine the leakage of the collecting 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 the collecting bowl is not leaking;

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

[0038] A third aspect of the present application provides a processor configured to execute the above-mentioned collection bowl leakage warning method.

[0039] A fourth aspect of the present application provides a machine-readable storage medium having instructions stored thereon, which, when executed by a processor, configures the processor to execute the above-mentioned collection bowl leakage warning method.

[0040] The above technical solution includes: obtaining real-time flue gas flow, real-time flue gas temperature and real-time demister flushing water pressure; inputting the real-time flue gas flow, 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 when the collecting bowl is not leaking; determining the leakage amount of the collecting bowl based on the real-time rate of change of the absorber liquid level and the rate of change of the absorber liquid level when the collecting bowl is not leaking; and issuing an early warning based on the leakage amount of the collecting bowl. Based on the solution provided in the embodiment of the present application, when a collection bowl leaks, it can be discovered and warned in time, so that corresponding measures can be taken in time to ensure the water balance in the single-tower double-circulation desulfurization system as much as possible.

[0041] Other features and advantages of the embodiments of the present application will be described in detail in the subsequent specific implementation section. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] The accompanying drawings are used to provide a further understanding of the embodiments of the present application and constitute a part of the specification. Together with the following specific implementations, they are used to explain the embodiments of the present application, but do not constitute a limitation on the embodiments of the present application. In the accompanying drawings:

[0043] Figure 1 A schematic diagram of a flow chart of a collection bowl leakage warning method according to an embodiment of the present application is schematically shown;

[0044] Figure 2 A schematic diagram of a process of another collection bowl leakage warning method according to an embodiment of the present application is shown;

[0045] Figure 3 The structure block diagram of a collection bowl leakage warning device according to an embodiment of the present application is schematically shown;

[0046] Figure 4 The internal structure diagram of a computer device according to an embodiment of the present application is schematically shown.

[0047] Description of Reference Numerals

[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 DESCRIPTION

[0049] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. It should be understood that the specific implementation methods described herein are only used to illustrate and explain the embodiments of the present application, and are not used to limit the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0050] If there are descriptions involving "first", "second", etc. in the embodiments of the present application, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0051] As described in the background technology, with the increasing environmental protection requirements, the application of single-tower double-circulation desulfurization system in the field of flue gas desulfurization is becoming more and more extensive. In the single-tower double-circulation desulfurization system, there is a spray layer corresponding to the AFT tower (i.e., the slurry pool outside the absorber) in the absorber. In the absorber, the slurry sprayed by the spray layer reacts with SO2 in the flue gas, and then falls into the collecting bowl through the guide cone, and then is transported to the AFT tower by the collecting bowl, and finally transported back to the corresponding spray layer in the absorber by the AFT tower, thereby forming a slurry circulation route in the single-tower double-circulation desulfurization system. However, in actual operation, the slurry flow rate may be large, exceeding the diversion capacity of the guide cone, causing part of the slurry to leak from the outside of the edge of the collecting bowl, and flow into the absorber kettle from the gap between the edge of the collecting bowl and the inner wall of the absorber. On the other hand, the downward flow of the slurry usually has a large impact force, which will cause the collection bowl to corrode and break over time, and then cause the slurry in the collection bowl to leak into the absorber kettle. It can be seen that excessive slurry flow or corrosion and damage of the collecting bowl will cause the slurry in the collecting bowl to leak into the absorber kettle, thereby causing the slurry that should flow into the AFT tower to flow into the absorber kettle, causing the system water balance to be destroyed and affecting the desulfurization effect. The prior art inspection method for collecting bowl leakage is generally to shut down the absorber and empty the absorber, and then manually enter to check the corrosion and damage of the collecting bowl. It is difficult to detect the leakage of the collecting bowl caused by the large slurry flow. Obviously, when the collecting bowl leaks, the above inspection method is difficult to detect the leakage in time and issue an early warning, which leads to the inability to take corresponding measures in time.

[0052] In view of this, an embodiment of the present application provides a collection bowl leakage warning method, such as Figure 1 As shown, the collection bowl leakage early warning method may include the following steps:

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

[0054] Wherein, 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, 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 absorption tower liquid level when there is no leakage in the collecting bowl.

[0056] The preset model can be used to characterize the corresponding relationship between the rate of change of the absorber liquid level and the flue gas flow rate, flue gas temperature and demister flushing water pressure when the collecting bowl is not leaking. 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 working condition, the rate of change of the absorber liquid level corresponding to the current flue gas flow rate, current flue gas temperature and current demister flushing water pressure when the collecting bowl is not leaking can be obtained based on this corresponding relationship, or the rate of change of the absorber liquid level corresponding to the current working condition when the collecting bowl is not leaking can be obtained.

[0057] When the gypsum slurry discharged from the absorption tower is dehydrated to form gypsum, the dehydrated water still returns to the absorption tower, and the limestone entering the absorption tower from the limestone slurry is basically offset by the mass of gypsum, so the gypsum slurry discharged from the absorption tower has basically no effect on the liquid level of the absorption tower. In other words, when the collecting bowl is not leaking, the change of the liquid level of the absorption tower is mainly affected by the flue gas evaporation and the amount of demister flushing water, and the flue gas evaporation is related to the flue gas flow rate and the flue gas temperature, the demister flushing water volume is related to the demister flushing water pressure, and the demister flushing water pressure can reflect the frequency of flushing and the amount of flushing water. Based on this, the embodiment of the present application establishes a corresponding relationship between the flue gas flow rate, the flue gas temperature, the demister flushing water pressure and the rate of change of the liquid level of the absorption tower when the collecting bowl is not leaking.

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

[0059] In the embodiment of the present application, the rate of change of the liquid level in the absorber when the collecting bowl is not leaking can be regarded as a function of the flue gas flow rate, the flue gas temperature and the 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 liquid level in the absorber when there is no leakage in the collecting bowl, in m / h; f() represents the function; Fin is the flue gas flow rate, in m 3 / h; Tin is the flue gas temperature, in °C; Pm is the demister flushing water pressure, in MPa.

[0062] Step 103, determining the leakage amount of the collecting bowl based on the real-time change rate of the liquid level in the absorption tower and the change rate of the liquid level in the absorption tower when the collecting bowl is not leaking.

[0063] Among them, the real-time change rate of the absorption tower liquid level can be understood as the actual change rate of the absorption tower liquid level under the current working condition (specifically, it can be the working condition corresponding to the leakage of the collecting bowl). At the same time, the change rate of the absorption tower liquid level when the collecting bowl is not leaking corresponds to the real-time flue gas flow, real-time flue gas temperature and real-time demister flushing water pressure under the current working condition, which can be obtained by inputting the real-time flue gas flow, real-time flue gas temperature and real-time demister flushing water pressure under the current working condition into the preset model.

[0064] It can be understood that step 103 is to determine the leakage amount of the collecting bowl according to the actual change rate of the liquid level in the absorption tower when the collecting bowl is leaking and the change rate of the liquid level in the absorption tower when the collecting bowl is not leaking.

[0065] In practical applications, there are usually multiple circulation pumps between the AFT tower and the absorption tower, corresponding to multiple circulation branches. The slurry in the AFT tower circulates to the absorption tower through these circulation branches. The flow rate corresponding to one circulation pump is generally 5000m 3 / h-10000m 3 / h. Generally speaking, the more circulating pumps are started, the more circulating branches are opened, and the more slurry is transported from the AFT tower to the absorption tower. Considering that the amount of leakage from the collection bowl is also related to the number of circulating pumps started, when the collection bowl leaks, the more circulating pumps are started, the more leakage may occur.

[0066] For example, if there are three circulating pumps between the AFT tower and the absorption tower, in theory, the design parameters of the guide cone can meet the slurry flow load corresponding to the start-up of all three circulating pumps. However, as the service time increases, the guide cone will be scaled and deformed, and the diversion effect will deteriorate, and it will no longer meet the slurry flow load corresponding to the start-up of all three circulating pumps. Assuming that the current guide cone can only meet the slurry flow load corresponding to the start-up of one circulating pump, the more circulating pumps are started, the more slurry leakage will occur.

[0067] Therefore, in order to achieve more accurate early warning, in the collection bowl leakage early warning method provided in the embodiment of the present application, N circulating pumps are arranged 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, based on the real-time change rate of the liquid level of the absorber and the change rate of the liquid level of the absorber when the collecting bowl is not leaking, determine the leakage of the collecting bowl, and determine the leakage corresponding to a single circulating pump; and, when N circulating pumps are turned on, based on the real-time change rate of the liquid level of the absorber and the change rate of the liquid level of the absorber when the collecting bowl is not leaking, determine the leakage of the collecting bowl, and determine the leakage corresponding to a single circulating pump. The leakage corresponding to a single circulating pump may also be referred to as the leakage corresponding to a single circulating pump.

[0068] That is, it can be understood as follows: in the first period, some of the N circulating pumps are turned on to obtain the real-time flue gas flow, real-time flue gas temperature and real-time defogger flushing water pressure, and the real-time flue gas flow, the real-time flue gas temperature and the real-time defogger flushing water pressure are input into the preset model to obtain the change rate of the absorber liquid level when the collecting bowl is not leaking; and based on the real-time change rate of the absorber liquid level and the change rate of the absorber liquid level when the collecting bowl is not leaking, the leakage of the collecting bowl is determined, and then the leakage corresponding to the single circulating pump is further determined. And, in the second period, N circulating pumps are turned on to obtain the real-time flue gas flow, real-time flue gas temperature and real-time defogger flushing water pressure, and the real-time flue gas flow, the real-time flue gas temperature and the real-time defogger flushing water pressure are input into the preset model to obtain the change rate of the absorber liquid level when the collecting bowl is not leaking; and based on the real-time change rate of the absorber liquid level and the change rate of the absorber liquid level when the collecting bowl is not leaking, the leakage of the collecting bowl is determined, and then the leakage corresponding to the single circulating pump is further determined.

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

[0070] ΔV1=(ΔLabts1-ΔLabt1)×Sabt (2);

[0071] In the above formula (2), ΔV1 is the leakage of the collecting 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 absorption tower liquid level, in m / h; ΔLabt1 is the rate of change of the absorption tower liquid level when there is no leakage in the collection bowl, in m / h; Sabt is the cross-sectional area of ​​the absorption tower, in m 2 Among them, the cross-sectional area Sabt of the absorption tower is usually a known fixed value and 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 amount corresponding to 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 of a single circulating pump when some of the N circulating pumps are turned on, and the unit is m 3 / h; n is the number of circulating pumps that are turned on among N circulating pumps.

[0075] Similarly, when N circulating pumps are turned on, 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 absorption tower liquid level, in m / h; ΔLabt2 is the rate of change of the absorption tower liquid level when there is no leakage in the collection bowl, in m / h; Sabt is the cross-sectional area of ​​the absorption tower, in m 2 .

[0078] Furthermore, when N circulating pumps are turned on, the leakage amount corresponding to 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 of a single circulating pump when N circulating pumps are turned on, and the unit is m 3 / h.

[0081] In practical applications, a demister is usually further provided on the upper part of the spray layer corresponding to the AFT tower in the absorption tower. The flushing water flow rate of the demister is generally 100m 3 / h-200m 3 / h, which is much smaller than the flow rate of a circulation pump, so the impact on the leakage of the collection bowl can be ignored.

[0082] Step 104 , issuing an early warning based on the leakage amount of the collection bowl.

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

[0084] However, considering that the amount of leakage from the collection bowl is also related to the number of circulating pumps started, in order to further measure the extent of the collection bowl leakage and make more accurate early warnings, such as Figure 2As shown, step 104 may specifically include step 1041, determining the leakage degree of the collecting bowl based on the leakage amount corresponding to a single circulating pump when some of the N circulating pumps are turned on and the leakage amount corresponding to a single circulating pump when the N circulating pumps are turned on, and issuing an early warning based on the leakage degree of the collecting bowl.

[0085] In the embodiment of the present application, the leakage degree 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 leakage degree of the collection bowl.

[0088] When issuing an early warning based on the degree of leakage of the collection bowl, a target leakage coefficient can be set, and an early warning is issued in response to the leakage coefficient of the collection bowl being greater than the target leakage coefficient. At the same time, a target leakage amount can also be set, and an early warning is issued in response to ΔVsg1 being greater than the target leakage amount. Among them, if the leakage coefficient of the collection bowl is greater than the target leakage coefficient, it means that the leakage of the collection bowl is already serious and the leakage degree is high. When some of the N circulation pumps are turned on, the leakage amount corresponding to a single circulation pump is greater than the target leakage amount, indicating that there is still a large leakage amount when only some of the circulation pumps are turned on, indicating that the leakage of the collection bowl is already serious and the leakage degree is high.

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

[0090] For example, if three circulating pumps are configured between the AFT tower and the absorption tower, 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 collection bowl leakage coefficient K is calculated based on formula (6). When the collection bowl leakage coefficient K is greater than the target leakage coefficient, an early warning is issued.

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

[0092] After the early warning, the operator can adjust the operation mode, such as increasing the number or power of the circulation pumps corresponding to the slurry in the absorber kettle, and reducing the number of circulation pumps started between the AFT tower and the absorber, so as to prevent the liquid level in the absorber from getting higher and higher and avoid overflow of the absorber.

[0093] It can be understood that the collection bowl leakage warning method provided in the above-mentioned embodiment of the present application includes: obtaining real-time flue gas flow, real-time flue gas temperature and real-time defogger flushing water pressure; inputting the real-time flue gas flow, the real-time flue gas temperature and the real-time defogger flushing water pressure into a preset model to obtain the rate of change of the absorber liquid level when the collection bowl is not leaking; based on the real-time rate of change of the absorber liquid level and the rate of change of the absorber liquid level when the collection bowl is not leaking, determine the leakage amount of the collection bowl; and issue a warning based on the leakage amount of the collection bowl. Based on the scheme provided in the embodiment of the present application, when a collection bowl leaks, it can be discovered and warned in time, so that corresponding measures can be taken in time 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 unbalanced to avoid further deterioration of the situation.

[0094] In addition, in the prior art, leakage of the collecting bowl caused by a slurry flow rate that exceeds the diversion capacity of the guide cone is difficult to detect. However, the solution provided in the above-mentioned embodiment of the present application can not only promptly detect leakage of the collecting bowl caused by corrosion and damage of the collecting bowl and issue a timely warning, but also promptly detect leakage of the collecting bowl caused by a slurry flow rate that exceeds the diversion capacity of the guide cone and issue a timely 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 above in this application, the leakage situation of the collection bowl can be grasped in real time, which facilitates the reasonable arrangement of downtime and maintenance time to deal with defects.

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

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

[0098] Prediction module 220, for inputting the real-time flue gas flow, 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 absorption tower liquid level when there is no leakage in the collecting bowl;

[0099] A leakage amount calculation module 230, for determining the leakage amount of the collecting 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 the collecting bowl is not leaking;

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

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

[0102] In one embodiment, N circulating pumps are arranged between the absorption tower and the external slurry pool of the absorption tower, and the leakage amount calculation module 230 is used to determine the leakage amount of the collecting 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 the collecting bowl is not leaking, and determine the leakage amount corresponding to a single circulating pump when some of the N circulating pumps are turned on;

[0103] Also, when N circulating pumps are turned on, the leakage amount of the collecting bowl is determined 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 collecting bowl, and the leakage amount corresponding to a single circulating pump is determined.

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

[0105] ΔV1=(ΔLabts1-ΔLabt1)×Sabt;

[0106] Among them, ΔV1 is the leakage of the collecting 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 absorption tower liquid level, in m / h; ΔLabt1 is the rate of change of the absorption tower liquid level when there is no leakage in the collection bowl, in m / h; Sabt is the cross-sectional area of ​​the absorption tower, in m 2 ;

[0107] When some of the N circulating pumps are turned on, the leakage amount 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] Among them, ΔVsg1 is the leakage of a single circulating pump when some of the N circulating pumps are turned on, and the unit is m 3 / h; n is the number of circulating pumps that are turned on among N circulating pumps.

[0110] In one embodiment, when N circulating pumps are turned on, the leakage amount 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] Among them, 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 absorption tower liquid level, in m / h; ΔLabt2 is the rate of change of the absorption tower liquid level when there is no leakage in the collection bowl, in m / h; Sabt is the cross-sectional area of ​​the absorption tower, in m 2 ;

[0113] When N circulating pumps are turned on, the leakage amount 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] Among them, ΔVsg2 is the leakage of a single circulating pump when N circulating pumps are turned on, and the unit is m 3 / h.

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

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

[0118] K = ΔVsg2 / ΔVsg1;

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

[0120] In response to the leakage coefficient of the collection bowl being greater than the target leakage coefficient, or the leakage amount corresponding to a single circulation pump being greater than the target leakage amount when some of the N circulation pumps are turned on, an early warning is issued.

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

[0122] The processor contains a kernel, which calls the corresponding program unit from the memory. One or more kernels can be set, and the kernel parameters can be adjusted to achieve fast and efficient modeling and calculation at the full chip scale.

[0123] The memory may include non-permanent memory in a computer-readable medium, 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] An embodiment of the present application provides a machine-readable storage medium on which a program is stored. When the program is executed by a processor, the above-mentioned collection bowl leakage warning method is implemented.

[0125] In one embodiment, a computer device is provided. The computer device may be a terminal, and its internal structure diagram may be as follows: Figure 4 As shown. The computer device includes a processor A01, a network interface A02, a display screen A04, an input device A05 and a memory (not shown in the figure) connected via a system bus. Among them, the processor A01 of the computer device is used to provide computing and control capabilities. The memory of the computer device includes an 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 in the non-volatile storage medium A06. The network interface A02 of the computer device is used to communicate with an external terminal through a network connection. When the computer program is executed by the processor A01, a collection bowl leakage warning method is implemented. The display screen A04 of the computer device can be a liquid crystal display or an electronic ink display, and the input device A05 of the computer device can be a touch layer covered on the display screen, or a button, trackball or touchpad set on the computer device housing, or an external keyboard, touchpad or mouse, etc.

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

[0127] In one embodiment, the collection bowl leakage warning device provided in the present application can be implemented in the form of a computer program. The computer program can be Figure 4 The computer device shown in the figure is run on the computer device. The memory of the computer device can store various program modules that constitute the construction task intelligent scheduling device, such as: Figure 3 The acquisition module 210, prediction module 220, leakage calculation module 230 and warning module 240 are shown. The computer program composed of various program modules enables the processor to execute the steps of the collection bowl leakage warning method of each embodiment of the present application described in this specification.

[0128] Figure 4 The computer device shown can be Figure 3 The acquisition module 210, prediction module 220, leakage amount calculation module 230 and warning module 240 in the collection bowl leakage warning device shown execute the method.

[0129] The embodiment of the present 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, the following steps are implemented:

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

[0131] The real-time flue gas flow, 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 absorption tower liquid level when there is no leakage in the collecting bowl;

[0132] Determine the leakage amount of the collecting bowl based on the real-time change rate of the liquid level in the absorber and the change rate of the liquid level in the absorber when the collecting bowl is not leaking;

[0133] Early warning based on leakage from collection bowl.

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

[0135] In one embodiment, N circulating pumps are arranged between the absorption tower and the external slurry pool of the absorption tower, and the leakage amount of the collecting bowl is determined based on the real-time change rate of the absorption tower liquid level and the change rate of the absorption tower liquid level when the collecting bowl is not leaking, including:

[0136] When some of the N circulating pumps are turned on, the leakage of the collecting bowl is determined based on the real-time change rate of the liquid level in the absorber and the change rate of the liquid level in the absorber when there is no leakage in the collecting bowl, and the leakage corresponding to a single circulating pump is determined;

[0137] Also, when N circulating pumps are turned on, the leakage amount of the collecting bowl is determined 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 collecting bowl, and the leakage amount corresponding to a single circulating pump is determined.

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

[0139] ΔV1=(ΔLabts1-ΔLabt1)×Sabt;

[0140] Among them, ΔV1 is the leakage of the collecting 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 absorption tower liquid level, in m / h; ΔLabt1 is the rate of change of the absorption tower liquid level when there is no leakage in the collection bowl, in m / h; Sabt is the cross-sectional area of ​​the absorption tower, in m 2 ;

[0141] When some of the N circulating pumps are turned on, the leakage amount corresponding to a single circulating pump is determined based on the following formula:

[0142] ΔVsg1=ΔV1 / n;

[0143] Among them, ΔVsg1 is the leakage of a single circulating pump when some of the N circulating pumps are turned on, and the unit is m 3 / h; n is the number of circulating pumps that are turned on among N circulating pumps.

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

[0145] ΔV2=(ΔLabts2-ΔLabt2)×Sabt;

[0146] Among them, 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 absorption tower liquid level, in m / h; ΔLabt2 is the rate of change of the absorption tower liquid level when there is no leakage in the collection bowl, in m / h; Sabt is the cross-sectional area of ​​the absorption tower, in m 2 ;

[0147] When N circulating pumps are turned on, the leakage amount corresponding to a single circulating pump is determined based on the following formula:

[0148] ΔVsg2=ΔV2 / N;

[0149] Among them, ΔVsg2 is the leakage of a single circulating pump when N circulating pumps are turned on, and the unit is m 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 corresponding to a single circulating pump when some of the N circulating pumps are turned on and the leakage amount corresponding to a single circulating pump when the N circulating pumps are turned on, the leakage degree of the collecting bowl is determined, and an early warning is issued based on the leakage degree of the collecting bowl.

[0152] In one embodiment, the leakage level of 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, which is used to characterize the leakage degree of the collection bowl; ΔVsg2 is the leakage amount corresponding to a single circulation pump when N circulation pumps are turned on, in units of m 3 / h; ΔVsg1 is the leakage of a single circulating pump when some of the N circulating pumps are turned on, in m 3 / h;

[0155] The early warning based on the leakage degree of the collection bowl includes:

[0156] In response to the leakage coefficient of the collection bowl being greater than the target leakage coefficient, or the leakage amount corresponding to a single circulation pump being greater than the target leakage amount when some of the N circulation pumps are turned on, an early warning is issued.

[0157] Those skilled in the art will appreciate that the embodiments of the present application may be provided as methods, systems, or computer program products. Therefore, the present application may adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment in combination with software and hardware. Moreover, the present application may adopt the form of a computer program product implemented in one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) that include computer-usable program code.

[0158] The present application is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to the embodiments of the present application. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of the processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0159] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0160] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions 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] The memory may include non-permanent memory in a computer-readable medium, random access memory (RAM) and / or non-volatile memory in the form of read-only memory (ROM) or flash RAM. The memory is an example of a computer-readable medium.

[0163] Computer readable media include permanent and non-permanent, removable and non-removable media, and can be implemented by any method or technology to store information. Information can be computer readable instructions, data structures, program modules 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 technology, compact disk read-only memory (CD-ROM), digital versatile disk (DVD) or other optical storage, magnetic cassettes, magnetic tape magnetic disk storage or other magnetic storage devices or any other non-transmission media that can be used to store information that can be accessed by a computing device. As defined herein, computer readable media does not include temporary computer readable media (transitory media), such as modulated data signals and carrier waves.

[0164] It should also be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, commodity or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, commodity or device. In the absence of more restrictions, the elements defined by the sentence "comprises a ..." do not exclude the existence of other identical elements in the process, method, commodity or device including the elements.

[0165] The above are only embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included within the scope of the claims of the present application.

Claims

1. A collection bowl leakage early warning method, characterized in that: include: Obtain real-time flue gas flow, real-time flue gas temperature and real-time demister flushing water pressure; The real-time flue gas flow, 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 absorption tower liquid level when there is no leakage in the collecting bowl; Determine the leakage amount of the collecting bowl based on the real-time change rate of the liquid level in the absorber and the change rate of the liquid level in the absorber when the collecting bowl is not leaking; Early warning based on leakage from collection bowl.

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

3. The collection bowl leakage early warning method according to claim 1, characterized in that: N circulating pumps are arranged between the absorption tower and the external slurry pool of the absorption tower. The leakage amount of the collecting bowl is determined based on the real-time change rate of the absorption tower liquid level and the change rate of the absorption tower liquid level when the collecting bowl is not leaking, including: When some of the N circulating pumps are turned on, the leakage of the collecting bowl is determined based on the real-time change rate of the liquid level in the absorber and the change rate of the liquid level in the absorber when there is no leakage in the collecting bowl, and the leakage corresponding to a single circulating pump is determined; Also, when N circulating pumps are turned on, the leakage amount of the collecting bowl is determined 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 collecting bowl, and the leakage amount corresponding to a single circulating pump is determined.

4. The collection bowl leakage early warning method according to claim 3, characterized in that: When some of the N circulating pumps are turned on, the leakage of the collection bowl is determined based on the following formula: ΔV1=(ΔLabts1-ΔLabt1)×Sabt; Among them, ΔV1 is the leakage of the collecting 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 absorption tower liquid level, in m / h; ΔLabt1 is the rate of change of the absorption tower liquid level when there is no leakage in the collection bowl, in m / h; Sabt is the cross-sectional area of ​​the absorption tower, in m 2 ; When some of the N circulating pumps are turned on, the leakage amount corresponding to a single circulating pump is determined based on the following formula: ΔVsg1=ΔV1 / n; Among them, ΔVsg1 is the leakage of a single circulating pump when some of the N circulating pumps are turned on, and the unit is m 3 / h; n is the number of circulating pumps that are turned on among N circulating pumps.

5. The collection bowl leakage early warning method according to claim 3, characterized in that: When N circulating pumps are turned on, the leakage of the collection bowl is determined based on the following formula: ΔV2=(ΔLabts2-ΔLabt2)×Sabt; Among them, 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 absorption tower liquid level, in m / h; ΔLabt2 is the rate of change of the absorption tower liquid level when there is no leakage in the collection bowl, in m / h; Sabt is the cross-sectional area of ​​the absorption tower, in m 2 ; When N circulating pumps are turned on, the leakage amount corresponding to a single circulating pump is determined based on the following formula: ΔVsg2=ΔV2 / N; Among them, ΔVsg2 is the leakage of a single circulating pump when N circulating pumps are turned on, and the unit is m 3 / h.

6. The collection bowl leakage early warning method according to claim 3, characterized in that: The early warning based on the leakage amount of the collection bowl includes: Based on the leakage amount corresponding to a single circulating pump when some of the N circulating pumps are turned on and the leakage amount corresponding to a single circulating pump when the N circulating pumps are turned on, the leakage degree of the collecting bowl is determined, and an early warning is issued based on the leakage degree of the collecting bowl.

7. The collection bowl leakage early warning method according to claim 6, characterized in that: The leakage level of the collection bowl is determined based on the following formula: K = ΔVsg2 / ΔVsg1; Where K is the leakage coefficient of the collection bowl, which is used to characterize the leakage degree of the collection bowl; ΔVsg2 is the leakage amount corresponding to a single circulation pump when N circulation pumps are turned on, in units of m 3 / h; ΔVsg1 is the leakage of a single circulating pump when some of the N circulating pumps are turned on, in m 3 / h; The early warning based on the leakage degree of the collection bowl includes: In response to the leakage coefficient of the collection bowl being greater than the target leakage coefficient, or the leakage amount corresponding to a single circulation pump being greater than the target leakage amount when some of the N circulation pumps are turned on, an early warning is issued.

8. A collection bowl leakage warning device, characterized in that: include: An acquisition module, used to acquire real-time flue gas flow, real-time flue gas temperature and real-time demister flushing water pressure; A prediction module, used for inputting the real-time flue gas flow, the real-time flue gas temperature, and the real-time demister flushing water pressure into a preset model to obtain a change rate of the absorption tower liquid level when there is no leakage in the collecting bowl; A leakage calculation module, used to determine the leakage of the collecting 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 the collecting bowl is not leaking; The early warning module is used to issue an early warning based on the leakage amount of the collection bowl.

9. A processor, characterized in that: The device is configured to execute the collection bowl leakage early warning method according to any one of claims 1 to 7.

10. A machine-readable storage medium having instructions stored thereon, characterized in that: When the instruction is executed by a processor, the processor is configured to execute the collection bowl leakage early warning method according to any one of claims 1 to 7.

Images