CN115400571A - Automatic slurry supply method and device for desulfurization absorption tower - Google Patents
Automatic slurry supply method and device for desulfurization absorption tower Download PDFInfo
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- 239000002002 slurry Substances 0.000 title claims abstract description 174
- 238000006477 desulfuration reaction Methods 0.000 title claims abstract description 126
- 230000023556 desulfurization Effects 0.000 title claims abstract description 126
- 238000010521 absorption reaction Methods 0.000 title claims abstract description 68
- 238000000034 method Methods 0.000 title claims abstract description 51
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 claims abstract description 196
- 238000005457 optimization Methods 0.000 claims abstract description 25
- 239000007788 liquid Substances 0.000 claims abstract description 5
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 31
- 239000003546 flue gas Substances 0.000 claims description 31
- 238000012545 processing Methods 0.000 claims description 25
- 238000012937 correction Methods 0.000 claims description 17
- 239000000463 material Substances 0.000 claims description 16
- 230000002159 abnormal effect Effects 0.000 claims description 11
- 238000004590 computer program Methods 0.000 claims description 6
- 238000012544 monitoring process Methods 0.000 claims description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 3
- 229910052760 oxygen Inorganic materials 0.000 claims description 3
- 239000001301 oxygen Substances 0.000 claims description 3
- 230000008569 process Effects 0.000 abstract description 5
- 238000004458 analytical method Methods 0.000 abstract description 4
- 238000004891 communication Methods 0.000 description 7
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- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 5
- 229910052717 sulfur Inorganic materials 0.000 description 5
- 239000011593 sulfur Substances 0.000 description 5
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 4
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 description 4
- 239000002131 composite material Substances 0.000 description 4
- 235000019738 Limestone Nutrition 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 239000003245 coal Substances 0.000 description 3
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 239000006028 limestone Substances 0.000 description 3
- 238000012795 verification Methods 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- 230000002745 absorbent Effects 0.000 description 2
- 239000002250 absorbent Substances 0.000 description 2
- 230000033228 biological regulation Effects 0.000 description 2
- 229910000019 calcium carbonate Inorganic materials 0.000 description 2
- 238000001311 chemical methods and process Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000003009 desulfurizing effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 239000010440 gypsum Substances 0.000 description 2
- 229910052602 gypsum Inorganic materials 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000010355 oscillation Effects 0.000 description 2
- 239000000779 smoke Substances 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- XTQHKBHJIVJGKJ-UHFFFAOYSA-N sulfur monoxide Chemical class S=O XTQHKBHJIVJGKJ-UHFFFAOYSA-N 0.000 description 2
- 229910052815 sulfur oxide Inorganic materials 0.000 description 2
- 230000002378 acidificating effect Effects 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- GBAOBIBJACZTNA-UHFFFAOYSA-L calcium sulfite Chemical compound [Ca+2].[O-]S([O-])=O GBAOBIBJACZTNA-UHFFFAOYSA-L 0.000 description 1
- 235000010261 calcium sulphite Nutrition 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 238000009499 grossing Methods 0.000 description 1
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- 239000007791 liquid phase Substances 0.000 description 1
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- 239000000203 mixture Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
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Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/48—Sulfur compounds
- B01D53/50—Sulfur oxides
- B01D53/501—Sulfur oxides by treating the gases with a solution or a suspension of an alkali or earth-alkali or ammonium compound
Abstract
The application provides an automatic slurry supply method and device for a desulfurization absorption tower, wherein the method comprises the following steps: acquiring desulfurization original data; inputting the original desulfurization data into an optimization control model to obtain a target slurry supply amount; determining the number of target working pumps needing to be started according to the target slurry supply amount, and then controlling the target working pumps to input the slurry with the target slurry supply amount into the desulfurization absorption tower; the compensation model obtains a compensation value of the slurry according to the difference value between the sulfur dioxide emission concentration and the target sulfur dioxide emission concentration and by combining the unit load; and adjusting the target slurry supply amount according to the compensation value so that the sulfur dioxide emission concentration is lower than or equal to the target sulfur dioxide emission concentration. This application is through the analysis processes to desulfurization raw data, and required thick liquid volume of definite desulfurization and pump combination number that can be more quick replace the manual work to add and control, have improved desulfurization efficiency, reduce sulfur dioxide emission concentration.
Description
Technical Field
The application relates to the technical field of desulfurization, in particular to an automatic slurry supply method and device for a desulfurization tower.
Background
At present, limestone-gypsum wet desulphurization technology is mostly adopted in thermal power plants, and the desulphurization principle is as follows: limestone slurry is fed into the desulfurization absorption tower through a slurry supply pump, slurry in the absorption tower is sprayed downwards from the upper part of the tower in an atomized state, raw flue gas containing high-concentration sulfur dioxide enters from the middle lower part of the absorption tower after being combusted in a boiler and is in reverse contact with the sprayed slurry, mass transfer and chemical absorption reaction are carried out on calcium carbonate in the slurry and the sulfur dioxide in the flue gas, calcium sulfate is generated, and finally the calcium sulfate is discharged out of the absorption tower and is dehydrated to generate gypsum.
However, most coal-fired power plant flue gas purification equipment is mainly adjusted and controlled according to experience of operators, when factors such as coal types and unit loads change, the operation characteristics of the equipment are affected, rules are difficult to control, and waste of manpower, materials and energy is often caused. Specifically, the flue gas reaction of the desulfurization absorption tower is a typical chemical process with large lag and slow dynamics, and the dynamic changes of factors such as unit load, sulfur content in coal quality, flue gas quantity, flue gas temperature, smoke concentration, absorbent quality and the like are added, the quality of PID control based on the pH value or the SO2 concentration of a discharge port is poor in the prior art, and the serious control lag easily causes large-amplitude oscillation of discharge, SO that manual intervention regulation is forced. However, people cannot monitor the disc in real time and measure and calculate with high accuracy, material and energy consumption waste always exists, and meanwhile, the working intensity of operators is increased.
Disclosure of Invention
In view of this, an object of the present application is to provide an automatic slurry supply method and apparatus for a desulfurization absorption tower, which can solve the problem of high sulfur dioxide emission concentration and low efficiency caused by manual slurry supply discharge in the prior art by analyzing the original desulfurization data, and can more quickly determine the slurry amount and pump composition number required for desulfurization, replace manual addition and control, improve the efficiency of desulfurization, and reduce the sulfur dioxide emission concentration.
In a first aspect, an embodiment of the present application provides an automatic slurry supply method for a desulfurization absorption tower, where the automatic slurry supply method for a desulfurization absorption tower includes:
the automatic slurry supply method for the desulfurization absorption tower comprises the following steps:
acquiring desulfurization original data;
inputting the desulfurization original data into an optimization control model, wherein the optimization control model obtains a target slurry supply amount according to a material balance principle;
determining the number of target working pumps needing to be started according to the target slurry supply amount;
controlling the target working pump to input the slurry with the target slurry supply amount into the desulfurization absorption tower;
determining the unit load according to the starting number of the working pumps;
obtaining the emission concentration of sulfur dioxide, wherein the emission concentration of sulfur dioxide is the emission concentration of sulfur dioxide desulfurized by the desulfurization absorption tower;
inputting the unit load, the sulfur dioxide emission concentration and a preset target sulfur dioxide emission concentration into a compensation model, wherein the compensation model obtains a compensation value of the slurry by combining the unit load according to a difference value between the sulfur dioxide emission concentration and the target sulfur dioxide emission concentration;
and adjusting the target slurry supply amount according to the compensation value so that the sulfur dioxide emission concentration is lower than or equal to the target sulfur dioxide emission concentration.
Further, the step of obtaining the raw desulfurization data is followed by:
correcting the desulfurization original data;
the correction processing includes missing value processing, abnormal value processing, and fluctuation data correction.
Further, the raw data of desulfurization includes: material balance data, slurry ph value, inlet oxygen value and flue gas temperature value.
Further, the material balance data comprises: inlet sulfur dioxide concentration, flue gas flow and slurry density.
Further, the step of controlling the target working pump to input the target slurry supply amount of the slurry into the desulfurization absorption tower includes:
and monitoring the accumulated value of the slurry input, and reducing the target slurry supply amount when the accumulated value exceeds a preset value.
Further, the step of controlling the target working pump to input the target slurry supply amount of the slurry into the desulfurization absorption tower includes:
obtaining the pH value of the slurry;
when the pH value of the slurry is larger than the preset pH value, reducing the target slurry supply amount;
and when the pH value of the slurry is smaller than the preset pH value, increasing the target slurry supply amount.
In a second aspect, an embodiment of the present application further provides an automatic slurry supply device for a desulfurization absorption tower, the automatic slurry supply device for a desulfurization absorption tower includes:
the first acquisition module is used for acquiring desulfurization original data;
the optimization control module is used for inputting the desulfurization original data into an optimization control model, and the optimization control model obtains a target slurry supply amount according to a material balance principle;
the first determining module is used for determining the number of target working pumps needing to be started according to the target pulp supply amount;
the control input module is used for controlling the target working pump to input the slurry with the target slurry supply amount into the desulfurization absorption tower;
the second determining module is used for determining the unit load according to the starting number of the working pumps;
the second acquisition module is used for acquiring the emission concentration of sulfur dioxide, wherein the emission concentration of sulfur dioxide is the emission concentration of sulfur dioxide desulfurized by the desulfurization absorption tower;
the compensation module is used for inputting the unit load, the sulfur dioxide emission concentration and a preset target sulfur dioxide emission concentration into a compensation model, and the compensation model is combined with the unit load according to the difference value between the sulfur dioxide emission concentration and the target sulfur dioxide emission concentration to obtain a compensation value of the slurry;
and the adjusting module is used for adjusting the target slurry supply amount according to the compensation value so as to enable the sulfur dioxide emission concentration to be lower than or equal to the target sulfur dioxide emission concentration.
Further, the automatic slurry supply device of the desulfurization absorption tower further comprises:
the correction module is used for correcting the original data;
the correction module specifically comprises a missing value processing module, an abnormal value processing module and a fluctuation data correction module.
In a third aspect, an embodiment of the present application further provides an electronic device, including: a processor, a memory and a bus, the memory storing machine-readable instructions executable by the processor, the processor and the memory communicating via the bus when the electronic device is operating, the machine-readable instructions when executed by the processor performing the steps of the method according to the first aspect as described above.
In a fourth aspect, the present invention further provides a computer-readable storage medium, on which a computer program is stored, where the computer program is executed by a processor to perform the steps of the method according to the first aspect.
The application provides a desulfurization absorption tower automatic slurry supply method and device, which comprises the steps of obtaining desulfurization original data; inputting the original desulfurization data into an optimization control model, and obtaining a target slurry supply amount by the optimization control model according to a material balance principle; determining the number of target working pumps needing to be started according to the target slurry supply amount; controlling a target working pump to input the slurry with the target slurry supply amount into a desulfurization absorption tower; determining the unit load according to the starting number of the working pumps; obtaining the emission concentration of sulfur dioxide, wherein the emission concentration of sulfur dioxide is the emission concentration of sulfur dioxide desulfurized by a desulfurization absorption tower; inputting the unit load, the sulfur dioxide emission concentration and a preset target sulfur dioxide emission concentration into a compensation model, and obtaining a compensation value of the slurry by the compensation model according to the difference value between the sulfur dioxide emission concentration and the target sulfur dioxide emission concentration by combining the unit load; and adjusting the target slurry supply amount according to the compensation value so that the sulfur dioxide emission concentration is lower than or equal to the target sulfur dioxide emission concentration. Through analysis and processing to desulfurization original data, required thick liquid volume of definite desulfurization and pump composite number that can be more quick replace the manual work to add and control, have improved desulfurization efficiency, reduce sulfur dioxide discharge concentration.
In order to make the aforementioned objects, features and advantages of the present application more comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a flow chart of an automatic slurry supply method for a desulfurization absorption tower according to an embodiment of the present disclosure;
fig. 2 is a schematic diagram illustrating a smart desulfurization model in an automatic slurry feeding method for a desulfurization absorption tower according to an embodiment of the present disclosure;
fig. 3 is a schematic structural diagram of an automatic slurry supply device of a desulfurization absorption tower according to an embodiment of the present disclosure;
fig. 4 is a schematic structural diagram of an electronic device according to an embodiment of the present application.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all the embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. Every other embodiment that can be obtained by a person skilled in the art without making creative efforts based on the embodiments of the present application falls within the protection scope of the present application.
The flue gas reaction of the desulfurization absorption tower is a typical chemical process with large hysteresis and slow dynamics, and dynamic changes of factors such as unit load, sulfur content in coal, flue gas quantity, flue gas temperature, smoke concentration, absorbent quality and the like are added, the quality of the traditional PID control based on the pH value or the concentration of SO2 at a discharge port is poor, and the serious control hysteresis easily causes large-amplitude oscillation of discharge, SO that manual intervention and regulation are forced. However, people cannot monitor the disc in real time and measure and calculate with high accuracy, material and energy consumption waste always exists, and meanwhile, the working intensity of operators is increased. Based on this, the application provides a desulfurization absorption tower automatic slurry feeding method and device, through the analysis to desulfurization raw data, can be more quick confirm required slurry liquid volume of desulfurization and pump composite number, replace the manual work to add and control, improved the efficiency of desulfurization, reduce sulfur dioxide emission concentration.
For the convenience of understanding the embodiment, a detailed description will be first given of a seismic image noise suppression method disclosed in the embodiment of the present invention.
The embodiment of the invention provides an automatic slurry supply method for a desulfurization absorption tower, which is suitable for flue gas desulfurization in a coal-fired power plant. Referring to a flow schematic diagram of an automatic slurry supply method for a desulfurization absorption tower shown in fig. 1, the method sequentially performs the following processing steps S102 to S106 on original data to obtain a processed target slurry supply amount:
and step S101, acquiring desulfurization original data.
In the embodiment of the invention, desulfurization is also called flue gas desulfurization, sulfur-containing flue gas enters a tower body from the upper part of a slurry pool through an inlet area of a desulfurization tower, wherein the sulfur-containing flue gas is treated as inlet sulfur dioxide concentration in the embodiment of the invention, and in the desulfurization tower, hot flue gas is contacted with slurry (circularly sprayed) from top to bottom in a countercurrent and upward manner to generate chemical absorption reaction and is condensed. The added limestone slurry is conveyed to the desulfurizing tower by a limestone slurry pump, is mixed with the slurry in the desulfurizing tower, and is conveyed upwards by a circulating pump and is sprayed out by a multilayer nozzle. The slurry absorbs sulfur oxides and other acidic species from the flue gas, and the sulfur oxides react with calcium carbonate in the liquid phase to form calcium sulfite.
Optionally, referring to fig. 2, a schematic diagram of an intelligent desulfurization model provided in an embodiment of the present invention is shown, where the desulfurization raw data includes data such as material balance data, slurry ph value, inlet oxygen value, and flue gas temperature value, and the data is raw data that can be obtained before the desulfurization tower works, and after reasonable analysis and proportioning, data required in the desulfurization process can be better controlled.
Optionally, the material balance data includes: inlet sulfur dioxide concentration, flue gas flow rate and slurry density. The inlet sulfur dioxide concentration and the flue gas flow directly affect the outlet sulfur dioxide concentration after desulfurization.
Optionally, after the step of obtaining the raw desulfurization data, the method includes:
correcting the desulfurization original data;
the correction processing includes missing value processing, abnormal value processing, and fluctuation data correction.
The obtained desulfurization original data often contains noise, incomplete data and even inconsistent data, and if the data is not processed, the accuracy of a pulp supply optimization model and a circulating pump recommendation model is influenced. The method of 3 sigma, judgment and the like is commonly used for positioning the abnormity, and then the data is corrected in the modes of missing value processing, abnormal value processing, fluctuation data correction and the like.
The missing value processing is to find that a phenomenon of missing numerical values exists in the process of extracting original metering data, particularly historical equipment operating parameters, and to ensure the effectiveness of modeling data, the missing value processing discards the numerical values. Abnormal value processing is that part of data has abnormal conditions such as exceeding an index threshold range, instantaneous floating zero, negative number and the like, but the abnormal conditions cannot be simply discarded to influence the continuity of time sequence data, and the abnormal conditions are eliminated in modes such as interpolation and completion. The fluctuation data correction is an important index of unit load, inlet sulfur content and the like for model prediction, but the data quality is generally not high, the fluctuation of numerical values is obvious and has spurs, and the control model is subjected to smoothing treatment in order to ensure that the control model is not influenced by the fluctuation of the numerical values.
And S102, inputting the original desulfurization data into an optimization control model, and obtaining a target slurry supply amount by the optimization control model according to a material balance principle.
The desulfurization original data obtained in the step S101 is input into the optimization control model in the embodiment of the present invention, the optimization control model has an effect of obtaining a target slurry supply amount according to the inlet sulfur dioxide concentration, the flue gas flow rate, and the slurry density, and the target slurry supply amount indicates how much slurry is released to meet the outlet sulfur dioxide concentration meeting the label after being combined with the flue gas.
And step S103, determining the number of target working pumps needing to be started according to the target slurry supply amount.
In the embodiment of the invention, the slurry combined with the flue gas is firstly stored in a slurry storage tank, then the slurry is pumped above the flue gas through the slurry working pump, the desulfurization is carried out by combining the slurry with the flue gas in a spraying mode, and the requirements of slurry spraying can be met while the machine is saved by determining and starting several working pumps according to the target slurry supply amount.
And step S104, controlling a target working pump to input the slurry with the target slurry supply amount into the desulfurization absorption tower.
After determining the number of the target working pumps based on step S103, the target working pumps deliver the slurry of the target slurry amount to the desulfurization absorption tower, and then the slurry input to the desulfurization absorption tower is combined with the flue gas to reduce the concentration of sulfur dioxide in the flue gas.
Optionally, the step of controlling the target working pump to input the target slurry supply amount of the slurry into the desulfurization absorption tower includes:
and monitoring the accumulated value of the slurry input, and reducing the target slurry supply amount when the accumulated value exceeds a preset value.
In the embodiment of the invention, the discharge of the slurry also needs to meet a certain standard, the slurry cannot be discharged without limit, monitoring is needed, and when the discharge amount of the slurry reaches the target amount, the discharge of the target slurry supply amount needs to be reduced.
Optionally, after the step of controlling the target working pump to input the target slurry supply amount of the slurry into the desulfurization absorption tower, the method includes:
obtaining the pH value of the slurry;
when the pH value is larger than the preset pH value, reducing the target slurry supply amount;
and when the pH value of the slurry is less than the preset pH value, increasing the target slurry supply amount.
And step S105, determining the unit load according to the starting number of the working pumps.
In the embodiment of the invention, the unit load is also an important measurement factor, the unit load value is ensured to be within a certain range, the desulfurization efficiency is favorably improved, the unit load can be obtained by combining the number of the starting pumps and some parameters of the working condition of the machine, and the unit load value is MW/h.
And S106, obtaining the emission concentration of sulfur dioxide, wherein the emission concentration of sulfur dioxide is the emission concentration of sulfur dioxide desulfurized by the desulfurization absorption tower.
When the target working pump inputs the slurry with the target slurry supply amount into the desulfurization absorption tower, the slurry is combined with the flue gas, the combined gas is the desulfurized flue gas, and at the moment, the gas is detected by sulfur dioxide to determine whether the emission of the sulfur dioxide reaches the standard.
And S107, inputting the unit load, the sulfur dioxide emission concentration and a preset target sulfur dioxide emission concentration into a compensation model, and obtaining a compensation value of the slurry by the compensation model according to the difference value between the sulfur dioxide emission concentration and the target sulfur dioxide emission concentration by combining the unit load.
When the unit is loaded and the inlet SO 2 The rapid lifting and dropping can seriously affect the running characteristics of the equipment, and the control precision of the optimal control can fluctuate. To solve the problem, the scheme selects the historical unit load (x) of a minute time window 1(t，t-1，...，t-n) ) Inlet SO 2 Concentration (x) 6(t，t-1，...，t-n) ) And a discharge port SO 2 Deviation of concentration from target value (y) 2(t，t-1，...，t-n) ) As model input, the deviation of the actual slurry amount from the predicted slurry amount output by the optimization control model as model output (u) 1(t，t-1，...，t-n) ) Applying time series analysis algorithm to construct a slurry amount prediction compensation model g (x) when the working condition changes rapidly 1(t，t-1，...，t-n) ，x 6(t，t-1，...，t-n) ，y 2(t，t-1，...，t-n) )＝(u 1(t，t-1，...，t-n) ) And the scheme at any moment can be accurately controlled.
And S108, adjusting the target pulp supply amount according to the compensation value so that the emission concentration of the sulfur dioxide is lower than or equal to the target emission concentration of the sulfur dioxide.
According to the compensation value of the target slurry amount obtained in step S107, the target slurry amount is adjusted up or down to meet the requirement that the sulfur dioxide concentration of the exhaust gas meets the standard concentration.
The embodiment of the invention also provides a model debugging method for the automatic slurry supply method of the desulfurization absorption tower, the constructed model passes theoretical effect verification, but in order to ensure that the model can really generate benefit, the site debugging verification of the model is required, and the model can be further optimized according to the characteristics of actual working conditions and feedback data. The debugging content comprises adjustment and optimization of various working condition slurry supply quantity model parameters, a slurry supply quantity and valve opening correlation formula, pump switching time and force and the like, and module adaptation is carried out according to the requirements of operators on the upper and lower limits of the PH and the use habit.
Before debugging, a debugging personnel can make and output a standardized debugging scheme, standardize the flow and safety measures, and finally, after the inspection of a power plant manager is correct, debugging verification can be arranged.
Compared with the method for manually adjusting the size of the slurry supply amount in the prior art, the method for automatically supplying the slurry to the desulfurization absorption tower provided by the embodiment of the application obtains the original desulfurization data; inputting the desulfurization original data into an optimization control model to obtain a target slurry supply amount; determining the number of target working pumps needing to be started according to the target slurry supply amount, and then controlling the target working pumps to input the slurry with the target slurry supply amount into the desulfurization absorption tower; the compensation model obtains a compensation value of the slurry according to the difference value between the sulfur dioxide emission concentration and the target sulfur dioxide emission concentration and by combining the unit load; according to the compensation value adjustment target slurry supply amount to make sulfur dioxide discharge concentration be less than or equal to target sulfur dioxide discharge concentration, the required slurry amount of desulfurization and pump composite number can be more rapidly determined, the manual work is replaced to add and control, the efficiency of desulfurization is improved, and the sulfur dioxide discharge concentration is reduced.
Based on the same inventive concept, the embodiment of the present application further provides an automatic slurry supply device for a desulfurization absorption tower, which corresponds to the automatic slurry supply method for the desulfurization absorption tower.
Referring to fig. 3, fig. 3 is a schematic structural diagram of an automatic slurry supply device for a desulfurization absorption tower according to an embodiment of the present application, and as shown in fig. 3, the automatic slurry supply device 300 for a desulfurization absorption tower includes:
a first obtaining module 301, configured to obtain original desulfurization data;
the optimization control module 302 is used for inputting the desulfurization original data into an optimization control model, and the optimization control model obtains a target slurry supply amount according to a material balance principle;
a first determining module 303, configured to determine, according to the target slurry supply amount, the number of target working pumps that need to be started;
a control input module 304, configured to control the target working pump to input the target slurry supply amount of the slurry into the desulfurization absorption tower;
a second determining module 305, configured to determine a unit load according to the starting number of the working pumps;
a second obtaining module 306, configured to obtain a sulfur dioxide emission concentration, where the sulfur dioxide emission concentration is the sulfur dioxide emission concentration after desulfurization by the desulfurization absorption tower;
the compensation module 307 is configured to input the unit load, the sulfur dioxide emission concentration, and a preset target sulfur dioxide emission concentration into a compensation model, where the compensation model obtains a compensation value of the slurry by combining the unit load according to a difference between the sulfur dioxide emission concentration and the target sulfur dioxide emission concentration;
and the adjusting module 308 is used for adjusting the target pulp supply amount according to the compensation value so that the sulfur dioxide emission concentration is lower than or equal to the target sulfur dioxide emission concentration.
Further, the automatic thick liquid device that supplies of desulfurization absorption tower still includes:
the correction module is used for correcting the original desulfurization data;
the correction module specifically comprises a missing value processing module, an abnormal value processing module and a fluctuation data correction module.
Compared with the method for manually adjusting the size of the slurry supply amount in the prior art, the automatic slurry supply device for the desulfurization absorption tower provided by the embodiment of the application obtains the original desulfurization data; inputting the desulfurization original data into an optimization control model to obtain a target slurry supply amount; determining the number of target working pumps needing to be started according to the target slurry supply amount, and then controlling the target working pumps to input the slurry with the target slurry supply amount into the desulfurization absorption tower; the compensation model obtains a compensation value of the slurry according to the difference value between the sulfur dioxide emission concentration and the target sulfur dioxide emission concentration and by combining the unit load; according to the compensation value adjustment target slurry supply amount to make sulfur dioxide discharge concentration be less than or equal to target sulfur dioxide discharge concentration, the required slurry amount of desulfurization and pump composite number can be more rapidly determined, the manual work is replaced to add and control, the efficiency of desulfurization is improved, and the sulfur dioxide discharge concentration is reduced.
Referring to fig. 4, an embodiment of the present invention further provides an electronic device 400, including: a processor 402, a memory 404, a bus 403 and a communication interface 401, wherein the processor 402, the communication interface 401 and the memory 404 are connected through the bus 403; the processor 402 is used to execute executable modules, such as computer programs, stored in the memory 404.
The Memory 404 may include a Random Access Memory (RAM) or a non-volatile Memory (NVM), such as at least one disk Memory. The communication connection between the network element of the system and at least one other network element is realized through at least one communication interface 401 (which may be wired or wireless), and the internet, a wide area network, a local network, a metropolitan area network, and the like may be used.
The bus 403 may be an Industry Standard Architecture (ISA) bus, a Peripheral Component Interconnect (PCI) bus, an Extended ISA (EISA) bus, or the like. The bus may be divided into an address bus, a data bus, a control bus, etc. For ease of illustration, only one double-headed arrow is shown in FIG. 4, but that does not indicate only one bus or one type of bus.
The memory 404 is configured to store a program, and the processor 402 executes the program after receiving an execution instruction, and the method performed by the apparatus defined by the flow disclosed in any of the foregoing embodiments of the present invention may be applied to the processor 402, or implemented by the processor 402.
The processor 402 may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the above method may be performed by integrated logic circuits of hardware or instructions in the form of software in the processor 402. The Processor 402 may be a general-purpose Processor, and includes a Central Processing Unit (CPU), a Network Processor (NP), and the like; the device can also be a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field-Programmable Gate Array (FPGA), or other Programmable logic devices, discrete Gate or transistor logic devices, discrete hardware components. The various methods, steps and logic blocks disclosed in the embodiments of the present invention may be implemented or performed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of the method disclosed in connection with the embodiments of the present invention may be directly implemented by a hardware decoding processor, or implemented by a combination of hardware and software modules in the decoding processor. The software module may be located in ram, flash memory, rom, prom, or eprom, registers, etc. storage media as is well known in the art. The storage medium is located in the memory 404, and the processor 402 reads the information in the memory 404 and performs the steps of the above method in combination with the hardware.
The embodiment of the present application further provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the steps of the method for automatically supplying slurry to a desulfurization absorption tower in the embodiment of the method shown in fig. 1 may be executed.
It can be clearly understood by those skilled in the art that, for convenience and simplicity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other ways. The above-described embodiments of the apparatus are merely illustrative, and for example, the division of the units is only one logical division, and there may be other divisions when actually implemented, and for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection of devices or units through some communication interfaces, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one position, or may be distributed on multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.
The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a non-volatile computer-readable storage medium executable by a processor. Based on such understanding, the technical solution of the present application or portions thereof that substantially contribute to the prior art may be embodied in the form of a software product stored in a storage medium and including instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.
Finally, it should be noted that: the above-mentioned embodiments are only specific embodiments of the present application, and are used for illustrating the technical solutions of the present application, but not limiting the same, and the scope of the present application is not limited thereto, and although the present application is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: those skilled in the art can still make modifications or changes to the embodiments described in the foregoing embodiments, or make equivalent substitutions for some features, within the technical scope of the present disclosure; such modifications, changes or substitutions do not depart from the spirit and scope of the exemplary embodiments of the present application, and are intended to be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (10)
1. The automatic slurry supply method for the desulfurization absorption tower is characterized by comprising the following steps:
acquiring desulfurization original data;
inputting the desulfurization original data into an optimization control model, wherein the optimization control model obtains a target slurry supply amount according to a material balance principle;
determining the number of target working pumps needing to be started according to the target slurry supply amount;
controlling the target working pump to input the slurry with the target slurry supply amount into the desulfurization absorption tower;
determining the unit load according to the starting number of the working pumps;
obtaining the emission concentration of sulfur dioxide, wherein the emission concentration of sulfur dioxide is the emission concentration of sulfur dioxide desulfurized by the desulfurization absorption tower;
inputting the unit load, the sulfur dioxide emission concentration and a preset target sulfur dioxide emission concentration into a compensation model, wherein the compensation model obtains a compensation value of the slurry by combining the unit load according to a difference value between the sulfur dioxide emission concentration and the target sulfur dioxide emission concentration;
and adjusting the target slurry supply amount according to the compensation value so that the sulfur dioxide emission concentration is lower than or equal to the target sulfur dioxide emission concentration.
2. The method for automatically feeding slurry to a desulfurization absorption tower according to claim 1, wherein the step of obtaining raw desulfurization data is followed by the steps of:
correcting the desulfurization original data;
the correction processing includes missing value processing, abnormal value processing, and fluctuation data correction.
3. The method for automatically feeding slurry to a desulfurization absorption tower according to claim 1, wherein the desulfurization raw data comprises: material balance data, slurry ph value, inlet oxygen value and flue gas temperature value.
4. The method for automatically feeding slurry to a desulfurization absorption tower according to claim 3, wherein the material balance data comprises: inlet sulfur dioxide concentration, flue gas flow and slurry density.
5. The method for automatically feeding slurry to a desulfurization absorption tower according to claim 1, wherein the step of controlling the target working pump to feed the target slurry feeding amount of slurry to the desulfurization absorption tower comprises:
and monitoring the accumulated value of the slurry input, and reducing the target slurry supply amount when the accumulated value exceeds a preset value.
6. The method for automatically feeding slurry to a desulfurization absorption tower according to claim 1, wherein the step of controlling the target working pump to feed the target slurry feeding amount of slurry to the desulfurization absorption tower is followed by:
obtaining the pH value of the slurry;
when the pH value of the slurry is larger than the preset pH value, reducing the target slurry supply amount;
and when the pH value of the slurry is less than the preset pH value, increasing the target slurry supply amount.
7. The utility model provides an automatic thick liquid device that supplies of desulfurization absorption tower which characterized in that includes:
the first acquisition module is used for acquiring desulfurization original data;
the optimization control module is used for inputting the desulfurization original data into an optimization control model, and the optimization control model obtains a target slurry supply amount according to a material balance principle;
the first determining module is used for determining the number of target working pumps needing to be started according to the target slurry supply amount;
the control input module is used for controlling the target working pump to input the slurry with the target slurry supply amount into the desulfurization absorption tower;
the second determining module is used for determining the unit load according to the starting number of the working pumps;
the second acquisition module is used for acquiring the emission concentration of sulfur dioxide, wherein the emission concentration of sulfur dioxide is the emission concentration of sulfur dioxide desulfurized by the desulfurization absorption tower;
the compensation module is used for inputting the unit load, the sulfur dioxide emission concentration and a preset target sulfur dioxide emission concentration into a compensation model, and the compensation model obtains a compensation value of the slurry by combining the unit load according to a difference value between the sulfur dioxide emission concentration and the target sulfur dioxide emission concentration;
and the adjusting module is used for adjusting the target pulp supply amount according to the compensation value so as to enable the sulfur dioxide emission concentration to be lower than or equal to the target sulfur dioxide emission concentration.
8. The automatic slurry supply device for the desulfurization absorption tower as recited in claim 7, further comprising,
the correction module is used for correcting the original data;
the correction module specifically comprises a missing value processing module, an abnormal value processing module and a fluctuation data correction module.
9. An electronic device, comprising: a processor, a memory and a bus, the memory storing machine-readable instructions executable by the processor, the processor and the memory communicating over the bus when the electronic device is operating, the processor executing the machine-readable instructions to perform the steps of the method of any of claims 1 to 6.
10. A computer-readable storage medium, having stored thereon a computer program which, when being executed by a processor, is adapted to carry out the steps of the method according to any one of claims 1 to 6.
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