An online monitoring system and method for carbon emission of a thermal power unit

Abstract

The present application relates to carbon emission monitoring technical field, disclose a kind of thermal power unit carbon emission on-line monitoring system and method, comprising: data acquisition module, data processing module, first computing module, second computing module and coal-fired adjustment module, data acquisition module is used to obtain the data parameter of thermal power unit in preset time, data processing module is used to pre-process data parameter, first computing module is used to calculate the data parameter after pre-processing, obtain coal carbon emission, desulfurization carbon emission and denitration carbon emission, second computing module is used to comprehensively calculate the total amount of carbon dioxide emission of thermal power unit in preset time, coal-fired adjustment module is used to adjust the coal quantity of thermal power unit.The present application can carry out carbon emission monitoring to fire power unit, can accurately calculate total carbon emission, with accuracy, real-time advantage, can provide reliable data support for reducing total carbon emission, reducing greenhouse gas, thermal power plant economic compensation and so on.

Description

Technical Field

[0001] The present invention relates to the technical field of carbon emission monitoring, and in particular to an online carbon emission monitoring system and method for a thermal power unit. Background Art

[0002] With rapid economic development, greenhouse gases generated by production activities have become a threat to human well-being. Large-scale carbon dioxide emissions are the most significant contributor to the rapid spread of greenhouse gases, severely impacting ecological balance. This has led to significant glacier melting, global warming, delayed springs and autumns, and mild winters. Thermal power plants are a major source of carbon dioxide emissions, so reducing carbon emissions from these plants is crucial for lowering overall carbon emissions and greenhouse gas emissions.

[0003] At present, the total carbon emissions of each thermal power unit are mainly calculated based on parameters such as flue gas emissions, flue gas flow rate, pressure, temperature and humidity. This traditional carbon emission calculation method is affected by factors such as coal data measurement error, calculation error, and unit operating parameter error. For thermal power units, the calculated data has large deviations and cannot accurately obtain the total carbon emissions of the thermal power units. Therefore, the traditional calculation method has disadvantages such as frequent human interference, large errors, and high costs during the calculation process, and cannot provide reliable data support for energy conservation, emission reduction, and greenhouse gas reduction.

[0004] Therefore, how to provide a system and method for effectively monitoring the total carbon emissions of thermal power units is a technical problem that needs to be solved. Summary of the Invention

[0005] The embodiments of the present invention provide a system and method for online monitoring of carbon emissions from thermal power plants, which are used to solve the technical problem in the prior art that the total amount of carbon emissions from thermal power plants cannot be effectively monitored.

[0006] In order to achieve the above object, the present invention provides an online carbon emission monitoring system for thermal power units, the system comprising:

[0007] A data acquisition module is used to obtain data parameters of thermal power units within a preset time;

[0008] A data processing module, configured to pre-process the data parameters, wherein the pre-processing includes data cleaning and data extraction;

[0009] A first calculation module is used to calculate the preprocessed data parameters and obtain the coal-fired carbon emissions, desulfurization carbon emissions and denitrification carbon emissions of the thermal power unit;

[0010] a second calculation module, configured to comprehensively calculate the total carbon dioxide emissions of the thermal power unit within a preset time based on the coal combustion carbon emissions, the desulfurization carbon emissions, and the denitrification carbon emissions;

[0011] The coal-fired regulating module is used to regulate the coal-fired amount of the thermal power unit according to the total amount of carbon dioxide emissions.

[0012] In one embodiment, the data processing module is specifically configured to:

[0013] In the data processing module, the data cleaning includes deleting invalid data, duplicate data and erroneous data in the data parameters;

[0014] In the data processing module, the data extraction includes classifying the cleaned data parameters according to data category and data source.

[0015] In one embodiment, in the first calculation module, the first calculation module calculates the carbon oxidation rate of the thermal power unit according to the preprocessed data parameters, and calculates the coal-fired carbon emissions of the thermal power unit according to the carbon oxidation rate;

[0016] The first calculation module calculates the carbon oxidation rate of the thermal power unit according to the following formula:

[0017]

[0018] Wherein, D is the carbon oxidation rate of the thermal power unit, E is the slag volume of the thermal power unit, F is the average carbon content of the slag, J is the fly ash output of the thermal power unit, H is the average carbon content of the fly ash, α is the average dust removal efficiency of the thermal power unit, I is the coal consumption, G is the average lower calorific value of the coal, and K is the carbon content per unit calorific value of the coal.

[0019] The first calculation module calculates the carbon emissions of the coal-fired power unit according to the following formula:

[0020]

[0021] Among them, P1 is the carbon emission of coal burning of thermal power units, W is the amount of coal burned of thermal power units, A is the carbon content of coal burned by thermal power units, M CO2 is the molar mass of carbon dioxide, M C is the molar mass of carbon, and D is the carbon oxidation rate of the thermal power unit.

[0022] In one embodiment, in the first calculation module, the first calculation module calculates the desulfurization carbon emissions of the thermal power unit according to the following formula:

[0023]

[0024] Among them, P2 is the desulfurization carbon emission of the thermal power unit, L is the desulfurization agent consumption, N is the amount of substances participating in the reaction in the desulfurization agent, M CO2 is the molar mass of carbon dioxide, M j is the molar mass of the substance participating in the reaction in the desulfurizer, Q is the power generation of the thermal power unit, R is the desulfurization energy consumption ratio, and S is the carbon dioxide produced per unit of electricity.

[0025] In one embodiment, in the first calculation module, the first calculation module calculates the denitrification carbon emissions of the thermal power unit according to the following formula:

[0026] P3=Q×V×Y

[0027] Among them, P3 is the denitrification carbon emission of the thermal power unit, Q is the power generation of the thermal power unit, V is the denitrification energy consumption ratio, and Y is the carbon dioxide generated per unit of electricity.

[0028] In one embodiment, in the second calculation module, the second calculation module calculates the total amount of carbon dioxide emissions of the thermal power unit within a preset time according to the following formula:

[0029] P=P1+P2+P3;

[0030] Among them, P is the total carbon dioxide emissions of the thermal power unit within the preset time, P1 is the coal combustion carbon emissions of the thermal power unit, P2 is the desulfurization carbon emissions of the thermal power unit, and P3 is the denitrification carbon emissions of the thermal power unit.

[0031] In one embodiment, in the coal-fired adjustment module, the coal-fired adjustment module determines whether it is necessary to adjust the coal-fired amount of the thermal power unit based on the relationship between the total carbon dioxide emissions and the preset total carbon dioxide emissions. If the total carbon dioxide emissions are greater than the preset total carbon dioxide emissions, the coal-fired adjustment module determines that it is necessary to adjust the coal-fired amount of the thermal power unit; if the total carbon dioxide emissions are less than or equal to the preset total carbon dioxide emissions, the coal-fired adjustment module determines that it is not necessary to adjust the coal-fired amount of the thermal power unit.

[0032] In one of the embodiments, in the coal-fired adjustment module, when the coal-fired adjustment module determines that the coal-fired amount of the thermal power unit needs to be adjusted, the coal-fired adjustment module sets the coal-fired amount of the thermal power unit according to the total emission difference Aa between the total carbon dioxide emission amount A and the preset total carbon dioxide emission amount a.

[0033] In one embodiment, the coal-fired regulating module is specifically used to:

[0034] The coal-fired adjustment module is used to preset the total emission difference matrix B, set B (B1, B2, B3, B4), where B1 is the first preset total emission difference, B2 is the second preset total emission difference, B3 is the third preset total emission difference, B4 is the fourth preset total emission difference, and B1 < B2 < B3 < B4;

[0035] The coal-fired adjustment module is used to preset the coal-fired quantity matrix C of the thermal power unit, and set C(C1, C2, C3, C4, C5), wherein C1 is the first preset coal-fired quantity, C2 is the second preset coal-fired quantity, C3 is the third preset coal-fired quantity, C4 is the fourth preset coal-fired quantity, and C5 is the fifth preset coal-fired quantity, and C1<C2<C3<C4<C5;

[0036] The coal-fired adjustment module is further configured to set the coal-fired amount of the thermal power unit according to the relationship between the total emission difference Aa and each preset total emission difference:

[0037] When Aa<B1, the first preset coal consumption C1 is selected as the coal consumption of the thermal power unit;

[0038] When B1≤Aa<B2, the second preset coal consumption C2 is selected as the coal consumption of the thermal power unit;

[0039] When B2≤Aa<B3, the third preset coal consumption amount C3 is selected as the coal consumption amount of the thermal power unit;

[0040] When B3≤Aa<B4, the fourth preset coal consumption amount C4 is selected as the coal consumption amount of the thermal power unit;

[0041] When B4≤Aa, the fifth preset coal burning amount C5 is selected as the coal burning amount of the thermal power unit.

[0042] In order to achieve the above object, the present invention provides a method for online monitoring of carbon emissions from thermal power plants, the method comprising:

[0043] Obtain data parameters of thermal power units within a preset time;

[0044] Preprocessing the data parameters, wherein the preprocessing includes data cleaning and data extraction;

[0045] Calculating the preprocessed data parameters to obtain coal-fired carbon emissions, desulfurization carbon emissions, and denitrification carbon emissions of the thermal power unit;

[0046] Comprehensively calculate the total carbon dioxide emissions of the thermal power unit within a preset time based on the coal combustion carbon emissions, the desulfurization carbon emissions, and the denitrification carbon emissions;

[0047] The amount of coal burned in the thermal power unit is adjusted according to the total amount of carbon dioxide emissions.

[0048] The present invention provides a system and method for online monitoring of carbon emissions from thermal power plants, which have the following advantages over existing technologies:

[0049] The present invention discloses an online carbon emissions monitoring system and method for thermal power units, comprising: a data acquisition module, a data processing module, a first calculation module, a second calculation module, and a coal-fired regulation module. The data acquisition module is used to acquire data parameters of the thermal power unit within a preset time period; the data processing module is used to preprocess the data parameters; the first calculation module is used to calculate the preprocessed data parameters to obtain coal-fired carbon emissions, desulfurization carbon emissions, and denitrification carbon emissions; the second calculation module is used to comprehensively calculate the total carbon dioxide emissions of the thermal power unit within the preset time period; and the coal-fired regulation module is used to regulate the coal consumption of the thermal power unit. The present invention can monitor carbon emissions from thermal power units and accurately calculate the total carbon emissions. It has the advantages of accuracy and real-time performance, and can provide reliable data support for reducing total carbon emissions, reducing greenhouse gases, and providing economic compensation for thermal power plants. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] Figure 1 A schematic structural diagram of an online carbon emission monitoring system for a thermal power unit according to an embodiment of the present invention is shown;

[0051] Figure 2 A schematic flow chart of an online carbon emission monitoring method for a thermal power plant according to an embodiment of the present invention is shown. DETAILED DESCRIPTION

[0052] The following embodiments of the present invention are described in further detail with reference to the accompanying drawings and examples. The following examples are used to illustrate the present invention but are not intended to limit the scope of the present invention.

[0053] In the description of this application, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0054] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. Throughout this application, unless otherwise specified, "plurality" means two or more.

[0055] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0056] The following is a description of preferred embodiments of the present invention with reference to the accompanying drawings.

[0057] like Figure 1 As shown, an embodiment of the present invention discloses an online carbon emission monitoring system for thermal power units, the system comprising:

[0058] A data acquisition module is used to obtain data parameters of thermal power units within a preset time;

[0059] A data processing module, configured to pre-process the data parameters, wherein the pre-processing includes data cleaning and data extraction;

[0060] A first calculation module is used to calculate the preprocessed data parameters and obtain the coal-fired carbon emissions, desulfurization carbon emissions and denitrification carbon emissions of the thermal power unit;

[0061] a second calculation module, configured to comprehensively calculate the total carbon dioxide emissions of the thermal power unit within a preset time based on the coal combustion carbon emissions, the desulfurization carbon emissions, and the denitrification carbon emissions;

[0062] The coal-fired regulating module is used to regulate the coal-fired amount of the thermal power unit according to the total amount of carbon dioxide emissions.

[0063] In this embodiment, the present invention includes: a data acquisition module, a data processing module, a first calculation module, a second calculation module, and a coal-fired adjustment module. The data acquisition module is used to acquire data parameters of the thermal power unit within a preset time. The data processing module is used to preprocess the data parameters. The first calculation module is used to calculate the preprocessed data parameters to obtain coal-fired carbon emissions, desulfurization carbon emissions, and denitrification carbon emissions. The second calculation module is used to comprehensively calculate the total carbon dioxide emissions of the thermal power unit within the preset time. The coal-fired adjustment module is used to adjust the coal consumption of the thermal power unit. The present invention can monitor carbon emissions of thermal power units and accurately calculate the total carbon emissions. It has the advantages of accuracy and real-time performance, and can provide reliable data support for reducing total carbon emissions, reducing greenhouse gases, and providing economic compensation for thermal power plants.

[0064] It should be noted that the preset time in the present invention can be selected according to actual conditions, such as within 6 months or within 1 year. The specific preset time is not specifically limited here. The data parameters of the thermal power unit include the slag amount of the thermal power unit, the average carbon content of the slag, the fly ash production of the thermal power unit, the average carbon content of the fly ash, etc.

[0065] In some embodiments of the present application, the data processing module is specifically used to:

[0066] In the data processing module, the data cleaning includes deleting invalid data, duplicate data and erroneous data in the data parameters;

[0067] In the data processing module, the data extraction includes classifying the cleaned data parameters according to data category and data source.

[0068] In this embodiment, data cleaning can include deleting invalid data, duplicate data, and erroneous data from data parameters. Invalid data includes data that lacks key information and cannot be distinguished, data that cannot be parsed, etc. Duplicate data includes identical and repeated data collected at the same time, and erroneous data includes incomplete data or data that clearly does not conform to the rules. After cleaning, the data is classified. Through data cleaning and extraction, reliable data support can be provided for calculating the coal-fired carbon emissions, desulfurization carbon emissions, and denitrification carbon emissions of thermal power units, thereby improving the accuracy of calculations.

[0069] In some embodiments of the present application, in the first calculation module, the first calculation module calculates the carbon oxidation rate of the thermal power unit according to the preprocessed data parameters, and calculates the coal-fired carbon emissions of the thermal power unit according to the carbon oxidation rate;

[0070] The first calculation module calculates the carbon oxidation rate of the thermal power unit according to the following formula:

[0071]

[0072] Wherein, D is the carbon oxidation rate of the thermal power unit, E is the slag volume of the thermal power unit, F is the average carbon content of the slag, J is the fly ash output of the thermal power unit, H is the average carbon content of the fly ash, α is the average dust removal efficiency of the thermal power unit, I is the coal consumption, G is the average lower calorific value of the coal, and K is the carbon content per unit calorific value of the coal.

[0073] The first calculation module calculates the carbon emissions of the coal-fired power unit according to the following formula:

[0074]

[0075] Among them, P1 is the carbon emission of coal burning of thermal power units, W is the amount of coal burned of thermal power units, A is the carbon content of coal burned by thermal power units, M CO2 is the molar mass of carbon dioxide, M C is the molar mass of carbon, and D is the carbon oxidation rate of the thermal power unit.

[0076] In this embodiment, during the combustion process of coal, since the carbon element in the coal cannot be completely burned, part of the carbon element is converted into fly ash, fly slag, etc., and part is converted into carbon monoxide, methane, etc. These elements will also produce carbon emissions when burned. Therefore, the present invention first calculates the carbon oxidation rate of the thermal power unit, and then calculates the carbon emissions of the coal of the thermal power unit based on the carbon oxidation rate of the thermal power unit, thereby realizing accurate monitoring of the carbon emissions of the thermal power unit.

[0077] In some embodiments of the present application, in the first calculation module, the first calculation module calculates the desulfurization carbon emissions of the thermal power unit according to the following formula:

[0078]

[0079] Among them, P2 is the desulfurization carbon emission of the thermal power unit, L is the desulfurization agent consumption, N is the amount of substances participating in the reaction in the desulfurization agent, M CO2 is the molar mass of carbon dioxide, M j is the molar mass of the substance participating in the reaction in the desulfurizer, Q is the power generation of the thermal power unit, R is the desulfurization energy consumption ratio, and S is the carbon dioxide produced per unit of electricity.

[0080] In this embodiment, the thermal power unit also produces carbon dioxide during the desulfurization process. Therefore, the present invention calculates the carbon dioxide emissions generated by the thermal power unit during the desulfurization process. The desulfurizer in the present invention can be limestone, magnesium oxide, etc., which is not specifically limited here and can be selected according to actual conditions.

[0081] In some embodiments of the present application, in the first calculation module, the first calculation module calculates the denitrification carbon emissions of the thermal power unit according to the following formula:

[0082] P3=9×V×Y

[0083] Among them, P3 is the denitrification carbon emission of the thermal power unit, Q is the power generation of the thermal power unit, V is the denitrification energy consumption ratio, and Y is the carbon dioxide generated per unit of electricity.

[0084] In this embodiment, the thermal power unit also generates carbon dioxide during the denitration process, so the present invention calculates the carbon dioxide emissions generated by the thermal power unit during the denitration process.

[0085] In some embodiments of the present application, in the second calculation module, the second calculation module calculates the total amount of carbon dioxide emissions of the thermal power unit within a preset time according to the following formula:

[0086] P=P1+P2+P3;

[0087] Among them, P is the total carbon dioxide emissions of the thermal power unit within the preset time, P1 is the coal combustion carbon emissions of the thermal power unit, P2 is the desulfurization carbon emissions of the thermal power unit, and P3 is the denitrification carbon emissions of the thermal power unit.

[0088] In this embodiment, the present invention comprehensively calculates the total carbon dioxide emissions of the thermal power unit within a preset time through the coal-fired carbon emissions of the thermal power unit, the desulfurization carbon emissions of the thermal power unit, and the denitrification carbon emissions of the thermal power unit. This can achieve accurate calculation of the total carbon emissions, has the advantages of accuracy and real-time performance, and can provide reliable data support for reducing the total carbon emissions, reducing greenhouse gases, and economic compensation for thermal power plants.

[0089] In some embodiments of the present application, in the coal-fired adjustment module, the coal-fired adjustment module determines whether it is necessary to adjust the coal-fired amount of the thermal power unit based on the relationship between the total amount of carbon dioxide emissions and the preset total amount of carbon dioxide emissions. If the total amount of carbon dioxide emissions is greater than the preset total amount of carbon dioxide emissions, the coal-fired adjustment module determines that it is necessary to adjust the coal-fired amount of the thermal power unit; if the total amount of carbon dioxide emissions is less than or equal to the preset total amount of carbon dioxide emissions, the coal-fired adjustment module determines that it is not necessary to adjust the coal-fired amount of the thermal power unit.

[0090] In some embodiments of the present application, in the coal-fired adjustment module, when the coal-fired adjustment module determines that the coal-fired amount of the thermal power unit needs to be adjusted, the coal-fired adjustment module sets the coal-fired amount of the thermal power unit according to the total emission difference Aa between the total carbon dioxide emissions A and the preset total carbon dioxide emissions a.

[0091] In this embodiment, whether the coal burning amount of the thermal power unit needs to be adjusted is determined based on the relationship between the total amount of carbon dioxide emissions and the preset total amount of carbon dioxide emissions. When the total amount of carbon dioxide emissions is greater than the preset total amount of carbon dioxide emissions, it means that the carbon dioxide emissions of the thermal power unit do not meet the requirements at this time, and the coal burning amount of the thermal power unit needs to be adjusted, thereby preventing the problem of excessive carbon emissions and polluting the atmospheric environment.

[0092] In some embodiments of the present application, the coal combustion adjustment module is used to preset the total emission difference matrix B, set B (B1, B2, B3, B4), where B1 is the first preset total emission difference, B2 is the second preset total emission difference, B3 is the third preset total emission difference, B4 is the fourth preset total emission difference, and B1 < B2 < B3 < B4;

[0093] The coal-fired adjustment module is used to preset the coal-fired quantity matrix C of the thermal power unit, and set C(C1, C2, C3, C4, C5), wherein C1 is the first preset coal-fired quantity, C2 is the second preset coal-fired quantity, C3 is the third preset coal-fired quantity, C4 is the fourth preset coal-fired quantity, and C5 is the fifth preset coal-fired quantity, and C1<C2<C3<C4<C5;

[0094] The coal-fired adjustment module is further configured to set the coal-fired amount of the thermal power unit according to the relationship between the total emission difference Aa and each preset total emission difference:

[0095] When Aa<B1, the first preset coal consumption C1 is selected as the coal consumption of the thermal power unit;

[0096] When B1≤Aa<B2, the second preset coal consumption C2 is selected as the coal consumption of the thermal power unit;

[0097] When B2≤Aa<B3, the third preset coal consumption amount C3 is selected as the coal consumption amount of the thermal power unit;

[0098] When B3≤Aa<B4, the fourth preset coal consumption amount C4 is selected as the coal consumption amount of the thermal power unit;

[0099] When B4≤Aa, the fifth preset coal burning amount C5 is selected as the coal burning amount of the thermal power unit.

[0100] In this embodiment, the coal-fired regulation module of the present invention is also used to set the coal-fired amount of the thermal power unit according to the relationship between the total emission difference Aa and each preset total emission difference. By setting the coal-fired amount of the thermal power unit, the present invention can achieve precise control of carbon dioxide emissions.

[0101] like Figure 2As shown, an embodiment of the present invention discloses a method for online monitoring of carbon emissions from a thermal power plant, the method comprising:

[0102] S101: Obtaining data parameters of thermal power units within a preset time;

[0103] S102: Preprocessing the data parameters, wherein the preprocessing includes data cleaning and data extraction;

[0104] S103: Calculating the pre-processed data parameters to obtain coal-fired carbon emissions, desulfurization carbon emissions, and denitrification carbon emissions of the thermal power unit;

[0105] S104: Comprehensively calculating the total carbon dioxide emissions of the thermal power unit within a preset time based on the coal combustion carbon emissions, the desulfurization carbon emissions, and the denitrification carbon emissions;

[0106] S105: Adjusting the coal consumption of the thermal power unit according to the total amount of carbon dioxide emissions.

[0107] In some embodiments of the present application, in S102, the data cleaning includes deleting invalid data, duplicate data, and erroneous data in the data parameters;

[0108] The data extraction includes classifying the cleaned data parameters according to data categories and data sources.

[0109] In some embodiments of the present application, in S103, the carbon oxidation rate of the thermal power unit is calculated according to the preprocessed data parameters, and the coal-fired carbon emissions of the thermal power unit are calculated according to the carbon oxidation rate;

[0110] The carbon oxidation rate of the thermal power unit is calculated according to the following formula:

[0111]

[0112] Wherein, D is the carbon oxidation rate of the thermal power unit, E is the slag volume of the thermal power unit, F is the average carbon content of the slag, J is the fly ash output of the thermal power unit, H is the average carbon content of the fly ash, α is the average dust removal efficiency of the thermal power unit, I is the coal consumption, G is the average lower calorific value of the coal, and K is the carbon content per unit calorific value of the coal.

[0113] The carbon emissions from coal combustion of the thermal power unit are calculated according to the following formula:

[0114]

[0115] Among them, P1 is the carbon emission of coal burning of thermal power units, W is the amount of coal burned of thermal power units, A is the carbon content of coal burned by thermal power units, M CO2 is the molar mass of carbon dioxide, MC is the molar mass of carbon, and D is the carbon oxidation rate of the thermal power unit.

[0116] In some embodiments of the present application, in S103, the desulfurization carbon emissions of the thermal power unit are calculated according to the following formula:

[0117]

[0118] Among them, P2 is the desulfurization carbon emission of the thermal power unit, L is the desulfurization agent consumption, N is the amount of substances participating in the reaction in the desulfurization agent, M CO2 is the molar mass of carbon dioxide, M j is the molar mass of the substance participating in the reaction in the desulfurizer, Q is the power generation of the thermal power unit, R is the desulfurization energy consumption ratio, and S is the carbon dioxide produced per unit of electricity.

[0119] In some embodiments of the present application, in S103, the denitrification carbon emissions of the thermal power unit are calculated according to the following formula:

[0120] P3=Q×V×Y

[0121] Among them, P3 is the denitrification carbon emission of the thermal power unit, Q is the power generation of the thermal power unit, V is the denitrification energy consumption ratio, and Y is the carbon dioxide generated per unit of electricity.

[0122] In some embodiments of the present application, in S104, the total amount of carbon dioxide emissions of the thermal power unit within a preset time is calculated according to the following formula:

[0123] P=P1+P2+P3;

[0124] Among them, P is the total carbon dioxide emissions of the thermal power unit within the preset time, P1 is the coal combustion carbon emissions of the thermal power unit, P2 is the desulfurization carbon emissions of the thermal power unit, and P3 is the denitrification carbon emissions of the thermal power unit.

[0125] In some embodiments of the present application, in S105, whether the coal burning amount of the thermal power unit needs to be adjusted is judged based on the relationship between the total amount of carbon dioxide emissions and the preset total amount of carbon dioxide emissions. If the total amount of carbon dioxide emissions is greater than the preset total amount of carbon dioxide emissions, it is judged that the coal burning amount of the thermal power unit needs to be adjusted. If the total amount of carbon dioxide emissions is less than or equal to the preset total amount of carbon dioxide emissions, it is judged that the coal burning amount of the thermal power unit does not need to be adjusted.

[0126] In some embodiments of the present application, in S105, when it is determined that the coal burning amount of the thermal power unit needs to be adjusted, the coal burning amount of the thermal power unit is set according to the total emission difference Aa between the total carbon dioxide emission amount A and the preset total carbon dioxide emission amount a.

[0127] In some embodiments of the present application, in S105, a preset total emission difference matrix B is set as B(B1, B2, B3, B4), where B1 is a first preset total emission difference, B2 is a second preset total emission difference, B3 is a third preset total emission difference, and B4 is a fourth preset total emission difference, and B1<B2<B3<B4;

[0128] A coal consumption matrix C of a thermal power unit is preset, and C(C1, C2, C3, C4, C5) is set, where C1 is a first preset coal consumption, C2 is a second preset coal consumption, C3 is a third preset coal consumption, C4 is a fourth preset coal consumption, and C5 is a fifth preset coal consumption, and C1 < C2 < C3 < C4 < C5;

[0129] The coal consumption of the thermal power unit is set according to the relationship between the total emission difference Aa and each preset total emission difference:

[0130] When Aa<B1, the first preset coal consumption C1 is selected as the coal consumption of the thermal power unit;

[0131] When B1≤Aa<B2, the second preset coal consumption C2 is selected as the coal consumption of the thermal power unit;

[0132] When B2≤Aa<B3, the third preset coal consumption amount C3 is selected as the coal consumption amount of the thermal power unit;

[0133] When B3≤Aa<B4, the fourth preset coal consumption amount C4 is selected as the coal consumption amount of the thermal power unit;

[0134] When B4≤Aa, the fifth preset coal burning amount C5 is selected as the coal burning amount of the thermal power unit.

[0135] In summary, the embodiment of the present invention includes: a data acquisition module, a data processing module, a first calculation module, a second calculation module, and a coal-fired adjustment module. The data acquisition module is used to obtain data parameters of the thermal power unit within a preset time. The data processing module is used to preprocess the data parameters. The first calculation module is used to calculate the preprocessed data parameters to obtain coal-fired carbon emissions, desulfurization carbon emissions, and denitrification carbon emissions. The second calculation module is used to comprehensively calculate the total carbon dioxide emissions of the thermal power unit within the preset time. The coal-fired adjustment module is used to adjust the coal consumption of the thermal power unit. The present invention can monitor carbon emissions of thermal power units and accurately calculate the total carbon emissions. It has the advantages of accuracy and real-time performance. It can provide reliable data support for reducing total carbon emissions, reducing greenhouse gases, and economic compensation for thermal power plants.

[0136] In the description of the above embodiments, specific features, structures, materials or characteristics may be combined in an appropriate manner in any one or more embodiments or examples.

[0137] Although the present invention has been described above with reference to exemplary embodiments, various modifications may be made and equivalent components may be substituted without departing from the scope of the present invention. In particular, the various features of the embodiments disclosed herein may be combined with one another in any manner, provided no structural conflicts exist. These combinations are not fully described in this specification solely for the sake of space and resource conservation. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but encompasses all technical solutions within the scope of the claims.

[0138] Those skilled in the art will understand that the above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will still be able to modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. An online carbon emission monitoring system for thermal power units, characterized in that: The system comprises: A data acquisition module is used to obtain data parameters of thermal power units within a preset time; A data processing module, configured to pre-process the data parameters, wherein the pre-processing includes data cleaning and data extraction; A first calculation module is used to calculate the preprocessed data parameters and obtain the coal-fired carbon emissions, desulfurization carbon emissions and denitrification carbon emissions of the thermal power unit; a second calculation module, configured to comprehensively calculate the total carbon dioxide emissions of the thermal power unit within a preset time based on the coal combustion carbon emissions, the desulfurization carbon emissions, and the denitrification carbon emissions; A coal-fired regulating module, configured to regulate the coal-fired amount of the thermal power unit according to the total amount of carbon dioxide emissions; In the coal-fired adjustment module, the coal-fired adjustment module determines whether it is necessary to adjust the coal-fired amount of the thermal power unit based on the relationship between the total amount of carbon dioxide emissions and the preset total amount of carbon dioxide emissions. If the total amount of carbon dioxide emissions is greater than the preset total amount of carbon dioxide emissions, the coal-fired adjustment module determines that it is necessary to adjust the coal-fired amount of the thermal power unit. If the total amount of carbon dioxide emissions is less than or equal to the preset total amount of carbon dioxide emissions, the coal-fired adjustment module determines that it is not necessary to adjust the coal-fired amount of the thermal power unit.

2. The online carbon emission monitoring system for thermal power units according to claim 1 is characterized in that: The data processing module is specifically used for: In the data processing module, the data cleaning includes deleting invalid data, duplicate data and erroneous data in the data parameters; In the data processing module, the data extraction includes classifying the cleaned data parameters according to data category and data source.

3. The online carbon emission monitoring system for thermal power units according to claim 1, characterized in that: In the first calculation module, the first calculation module calculates the carbon oxidation rate of the thermal power unit according to the preprocessed data parameters, and calculates the coal-fired carbon emissions of the thermal power unit according to the carbon oxidation rate; The first calculation module calculates the carbon oxidation rate of the thermal power unit according to the following formula: Wherein, D is the carbon oxidation rate of the thermal power unit, E is the slag volume of the thermal power unit, F is the average carbon content of the slag, J is the fly ash output of the thermal power unit, H is the average carbon content of the fly ash, α is the average dust removal efficiency of the thermal power unit, I is the coal consumption, G is the average lower calorific value of the coal, and K is the carbon content per unit calorific value of the coal; The first calculation module calculates the carbon emissions of the coal-fired power unit according to the following formula: Among them, P1 is the carbon emission of coal burning of thermal power units, W is the amount of coal burned of thermal power units, A is the carbon content of coal burned by thermal power units, M CO2 is the molar mass of carbon dioxide, M C is the molar mass of carbon, and D is the carbon oxidation rate of the thermal power unit.

4. The online carbon emission monitoring system for thermal power units according to claim 3 is characterized in that: In the first calculation module, the first calculation module calculates the desulfurization carbon emissions of the thermal power unit according to the following formula: Among them, P2 is the desulfurization carbon emission of the thermal power unit, L is the desulfurization agent consumption, N is the amount of substances participating in the reaction in the desulfurization agent, M CO2 is the molar mass of carbon dioxide, M j is the molar mass of the substance participating in the reaction in the desulfurizer, Q is the power generation of the thermal power unit, R is the desulfurization energy consumption ratio, and S is the carbon dioxide produced per unit of electricity.

5. The online carbon emission monitoring system for thermal power units according to claim 4, characterized in that: In the first calculation module, the first calculation module calculates the denitrification carbon emissions of the thermal power unit according to the following formula: P3=Q×V×Y Among them, P3 is the denitrification carbon emission of the thermal power unit, Q is the power generation of the thermal power unit, V is the denitrification energy consumption ratio, and Y is the carbon dioxide generated per unit of electricity.

6. The online carbon emission monitoring system for thermal power units according to claim 5, characterized in that: In the second calculation module, the second calculation module calculates the total amount of carbon dioxide emissions of the thermal power unit within a preset time according to the following formula: P=P1+P2+P3; Among them, P is the total carbon dioxide emissions of the thermal power unit within the preset time, P1 is the coal combustion carbon emissions of the thermal power unit, P2 is the desulfurization carbon emissions of the thermal power unit, and P3 is the denitrification carbon emissions of the thermal power unit.

7. The online carbon emission monitoring system for thermal power units according to claim 1, characterized in that: In the coal-fired adjustment module, when the coal-fired adjustment module determines that the coal-fired amount of the thermal power unit needs to be adjusted, the coal-fired adjustment module sets the coal-fired amount of the thermal power unit according to the total emission difference Aa between the total carbon dioxide emission amount A and the preset total carbon dioxide emission amount a.

8. The online carbon emission monitoring system for thermal power plants according to claim 7, characterized in that: The coal-fired regulating module is specifically used for: The coal-fired adjustment module is used to preset the total emission difference matrix B, set B (B1, B2, B3, B4), where B1 is the first preset total emission difference, B2 is the second preset total emission difference, B3 is the third preset total emission difference, B4 is the fourth preset total emission difference, and B1 < B2 < B3 < B4; The coal-fired adjustment module is used to preset the coal-fired quantity matrix C of the thermal power unit, and set C(C1, C2, C3, C4, C5), wherein C1 is the first preset coal-fired quantity, C2 is the second preset coal-fired quantity, C3 is the third preset coal-fired quantity, C4 is the fourth preset coal-fired quantity, and C5 is the fifth preset coal-fired quantity, and C1<C2<C3<C4<C5; The coal-fired adjustment module is further configured to set the coal-fired amount of the thermal power unit according to the relationship between the total emission difference Aa and each preset total emission difference: When Aa<B1, the first preset coal consumption C1 is selected as the coal consumption of the thermal power unit; When B1≤Aa<B2, the second preset coal consumption C2 is selected as the coal consumption of the thermal power unit; When B2≤Aa<B3, the third preset coal consumption amount C3 is selected as the coal consumption amount of the thermal power unit; When B3≤Aa<B4, the fourth preset coal consumption amount C4 is selected as the coal consumption amount of the thermal power unit; When B4≤Aa, the fifth preset coal burning amount C5 is selected as the coal burning amount of the thermal power unit.

9. A method for online monitoring of carbon emissions from thermal power plants, applied to the online monitoring system for carbon emissions from thermal power plants as claimed in any one of claims 1 to 8, characterized in that: The method comprises: Obtain data parameters of thermal power units within a preset time; Preprocessing the data parameters, wherein the preprocessing includes data cleaning and data extraction; Calculating the preprocessed data parameters to obtain coal-fired carbon emissions, desulfurization carbon emissions, and denitrification carbon emissions of the thermal power unit; Comprehensively calculate the total carbon dioxide emissions of the thermal power unit within a preset time based on the coal combustion carbon emissions, the desulfurization carbon emissions, and the denitrification carbon emissions; The amount of coal burned in the thermal power unit is adjusted according to the total amount of carbon dioxide emissions.

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