Calculation method, device and terminal for carbon emissions in asphalt mixture production stage

Abstract

The present invention relates to the technical field of carbon emission calculation, and provides a method, device and terminal for calculating carbon emissions in the asphalt mixture production stage. The method comprises: dividing the asphalt mixture production process into different stages according to different carbon emission sources; calculating a first theoretical carbon emission and an actual carbon emission respectively according to the different stages; determining a carbon emission correction factor according to the first theoretical carbon emission and the actual carbon emission; obtaining the mass of the asphalt mixture to be measured and the second theoretical carbon emission; determining the carbon emission of the asphalt mixture to be measured according to the mass of the asphalt mixture to be measured, the second theoretical carbon emission and the carbon emission correction factor. The present invention can improve the accuracy of carbon emission calculation.

Description

Technical Field

[0001] The present invention relates to the technical field of carbon emission calculation, and in particular to a method, device and terminal for calculating carbon emission in an asphalt mixture production stage. Background Art

[0002] Asphalt mixture is used in large quantities in the construction and repair of highways, bridges, port terminals and other road projects. Ordinary asphalt mixture is the most common type of mixture, and the asphalt mixture production stage is the key link and main source of carbon emissions in road construction and maintenance. Therefore, it is necessary to quantify the carbon emissions in the production stage of ordinary asphalt mixture.

[0003] At present, there are two main methods for calculating the carbon emissions of asphalt mixtures in the production stage: on-site measurement method and quota calculation method. The on-site measurement method is to find out the carbon emission source through the production process of asphalt mixtures, investigate the actual energy data involved in the production process, and calculate it using the carbon emission factor method; the quota calculation method is to obtain the unit shift number of each equipment and the unit shift fuel consumption and electricity consumption, and convert it into a comprehensive energy consumption and comprehensive carbon emission method.

[0004] However, the inventors found that the on-site measurement method can more accurately reflect the carbon emissions in the actual production process, but the data collection process is cumbersome and difficult, resulting in incomplete or inaccurate data, affecting the carbon emission calculation results. The quota calculation method is based on the existing quota standards and is simple to calculate, but the data in the quota is difficult to accurately represent the situation in the actual production process, resulting in inaccurate calculation results. Summary of the invention

[0005] The embodiments of the present invention provide a method, device and terminal for calculating carbon emissions in the production stage of asphalt mixture, so as to solve the problem of inaccurate carbon emission calculation results caused by carbon emission calculation of asphalt mixture in the prior art.

[0006] In a first aspect, an embodiment of the present invention provides a method for calculating carbon emissions in an asphalt mixture production stage, comprising:

[0007] The asphalt mixture production process is divided into different stages according to different carbon emission sources;

[0008] According to the different stages of division, the first theoretical carbon emissions and actual carbon emissions are calculated respectively;

[0009] Determining a carbon emission correction factor according to the first theoretical carbon emission and the actual carbon emission;

[0010] Obtain the mass of the asphalt mixture to be measured and the second theoretical carbon emission;

[0011] The carbon emissions of the asphalt mixture to be measured are determined according to the mass of the asphalt mixture to be measured, the second theoretical carbon emissions and the carbon emission correction coefficient.

[0012] In a possible implementation, the first theoretical carbon emissions are calculated according to different stages of division, including:

[0013] Determining theoretical carbon emissions generated by heating of asphalt according to asphalt heating parameters in a heating stage of the asphalt mixture production process;

[0014] Determining theoretical carbon emissions generated by aggregate heating according to aggregate heating parameters in a heating stage of the asphalt mixture production process;

[0015] The first theoretical carbon emissions are determined based on the theoretical carbon emissions generated by asphalt heating and the theoretical carbon emissions generated by aggregate heating.

[0016] In a possible implementation, determining the theoretical carbon emissions generated by asphalt heating according to asphalt heating parameters in the heating stage of the asphalt mixture production process includes:

[0017] according to Determine theoretical carbon emissions from heating asphalt;

[0018] in, represents the theoretical carbon emissions from asphalt heating, Indicates the asphalt-stone ratio of asphalt mixture. represents the specific heat capacity of asphalt, Indicates the temperature of asphalt heating during the mixing process of asphalt mixture. Indicates the storage temperature of asphalt during the mixing process of asphalt mixture. Indicates the combustion efficiency, represents the heat transfer efficiency, Indicates the low calorific value of natural gas. Represents the carbon emission factor of natural gas.

[0019] In a possible implementation, determining the theoretical carbon emissions generated by aggregate heating according to aggregate heating parameters in the heating stage of the asphalt mixture production process includes:

[0020] according to Determine theoretical carbon emissions from aggregate heating;

[0021] in, represents the theoretical carbon emission from aggregate heating, Indicates the mineral powder ratio of asphalt mixture. is the specific heat capacity of aggregate, Indicates the aggregate heating temperature during the mixing process of asphalt mixture. Indicates the temperature of aggregate before heating, represents the moisture content of aggregate, Represents the specific heat capacity of water.

[0022] In a possible implementation, determining the first theoretical carbon emissions according to the theoretical carbon emissions generated by heating asphalt and the theoretical carbon emissions generated by heating aggregates includes:

[0023] according to Determine the first theoretical carbon emissions;

[0024] in, Indicates the first theoretical carbon emissions.

[0025] In a possible implementation, actual carbon emissions are calculated according to different stages of division, including:

[0026] According to the energy consumption in the aggregate supply stage, asphalt and aggregate heating stage and mixing plant operation stage in the asphalt mixture production process, the actual carbon emissions are calculated according to the first formula;

[0027] The first formula is ;

[0028] Indicates actual carbon emissions; Indicates Energy consumption, Indicates Carbon emission factors of energy sources, , Indicates the total type of energy.

[0029] In a possible implementation, it is characterized in that determining the carbon emission correction factor according to the first theoretical carbon emission and the actual carbon emission includes:

[0030] according to Determine the carbon emission correction factor;

[0031] in, represents the carbon emission correction factor, Indicates the first theoretical carbon emissions.

[0032] In a possible implementation, determining the carbon emissions of the asphalt mixture to be measured according to the mass of the asphalt mixture to be measured, the second theoretical carbon emissions, and the carbon emission correction coefficient includes:

[0033] according to Determining the carbon emission of the asphalt mixture to be measured;

[0034] in, Indicates the carbon emission of the asphalt mixture to be measured, Indicates the mass of asphalt mixture to be measured, Represents the second theoretical carbon emissions.

[0035] In a second aspect, an embodiment of the present invention provides a device for calculating carbon emissions in an asphalt mixture production stage, comprising:

[0036] A division module is used to divide the asphalt mixture production process into different stages according to different carbon emission sources;

[0037] A calculation module, used for respectively calculating the first theoretical carbon emission and the actual carbon emission according to different stages of division;

[0038] The calculation module is further used to determine a carbon emission correction coefficient according to the first theoretical carbon emission and the actual carbon emission;

[0039] An acquisition module, used for acquiring the mass of the asphalt mixture to be measured and the second theoretical carbon emission;

[0040] The calculation module is further used to determine the carbon emissions of the asphalt mixture to be measured based on the mass of the asphalt mixture to be measured, the second theoretical carbon emissions and the carbon emission correction coefficient.

[0041] In a third aspect, an embodiment of the present invention provides a terminal comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the processor executes the computer program, the steps of the method for calculating carbon emissions in the asphalt mixture production stage as described in the first aspect or any possible implementation method of the first aspect are implemented.

[0042] The embodiment of the present invention provides a method, device and terminal for calculating carbon emissions in the asphalt mixture production stage, by dividing the asphalt mixture production process into different stages according to different carbon emission sources, and then respectively calculating the first theoretical carbon emissions and the actual carbon emissions according to the different stages, and then determining the carbon emission correction coefficient according to the first theoretical carbon emissions and the actual carbon emissions; finally, determining the carbon emissions of the asphalt mixture to be measured according to the obtained mass of the asphalt mixture to be measured, the second theoretical carbon emissions and the calculated carbon emission correction coefficient. The embodiment of the present invention obtains the carbon emission correction coefficient of the asphalt mixture product by using the actual carbon emissions and the theoretical carbon emissions, so that the actual carbon emissions of the asphalt mixture can be predicted later by the carbon emission correction coefficient and the actual production parameters, thereby solving the problem of low calculation accuracy caused by the failure to consider the loss problem caused by mechanical equipment, production process and other reasons in the actual production process when calculating the existing theoretical carbon emissions, improving the accuracy of carbon emissions calculation, and at the same time reducing the calculation complexity of the actual carbon emissions calculation in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0044] Figure 1 It is a flow chart of the implementation of the method for calculating carbon emissions in the asphalt mixture production stage provided by an embodiment of the present invention;

[0045] Figure 2 It is a flow chart of a method for calculating carbon emissions in the asphalt mixture production stage provided by an embodiment of the present invention;

[0046] Figure 3 is a schematic diagram of carbon emission sources of asphalt mixture at different stages provided by an embodiment of the present invention;

[0047] Figure 4 It is a schematic diagram of the structure of a device for calculating carbon emissions in the asphalt mixture production stage provided by an embodiment of the present invention;

[0048] Figure 5 is a schematic diagram of a terminal provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0049] In the following description, specific details such as specific system structures, technologies, etc. are provided for the purpose of illustration rather than limitation, so as to provide a thorough understanding of the embodiments of the present invention. However, it should be clear to those skilled in the art that the present invention may be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits, and methods are omitted to prevent unnecessary details from obstructing the description of the present invention.

[0050] In order to make the purpose, technical solutions and advantages of the present invention more clear, specific embodiments will be described below in conjunction with the accompanying drawings.

[0051] With the development of the economy, transportation is becoming more and more convenient, more and more highways are being built, and more and more carbon is generated every year. By the end of 2022, the total mileage of highways in China will reach 5.3548 million kilometers, and the maintenance mileage will reach 5.3503 million kilometers, accounting for 99.4% of the total mileage. The annual asphalt pavement maintenance and repair project will be close to 5 million kilometers, and the annual carbon emissions will be about 100 million tons. According to survey statistics, the carbon dioxide emissions of my country's highway industry in 2004 were about 290 million tons, and it is expected to reach 1.108 billion tons in 2030. It can be seen that road construction is a high-energy consumption and high-carbon emission project. Asphalt pavement is the main pavement form of my country's high-grade highways and one of the most important large-scale infrastructures. The demand for the addition and maintenance of domestic asphalt roads has driven the continuous growth of the asphalt mixture market demand and the significant increase in product output. Asphalt mixtures are used in the construction and repair of roads, bridges, ports and docks and other road projects. Ordinary asphalt mixtures are the most common type of mixtures, and the asphalt mixture production stage is the key link in the carbon emissions of road construction and maintenance. Therefore, it is necessary to quantify the carbon emissions of ordinary asphalt mixtures in the production stage.

[0052] If the upstream production of raw materials is not considered, the production of mixed materials is the main source of carbon emissions in the production stage of asphalt mixtures. At present, there are three main methods for calculating carbon emissions in the production stage of mixed materials. The first is the on-site measurement method, that is, to find the carbon emission source through the production process of asphalt mixtures, investigate the actual energy data involved in the production process, and use the carbon emission factor method for calculation; the second is the quota calculation method, which is based on the current "Highway Engineering Budget Quota" (JTG / T 3832-2018) and "Highway Engineering Machinery Unit Cost Quota" (JTG / T 3833-2018) in my country, and obtains the unit unit shift number and unit unit shift fuel consumption and electricity consumption of each equipment, and converts them into comprehensive energy consumption and comprehensive carbon emissions; the third is the data survey method, which is based on the rated parameters of mechanical equipment, and is an energy consumption calculation method established based on the model, power, production capacity, unit energy consumption and comprehensive fuel consumption of each mechanical equipment.

[0053] However, all of the above methods have their shortcomings. Although the on-site measurement method is closer to the actual situation and can more accurately reflect the carbon emissions in the actual production process, the data collection process may be cumbersome and require monitoring and investigation of multiple equipment and processes; the acquisition and integration of actual energy data may be limited by time and resources, resulting in incomplete or inaccurate data, thereby affecting the calculation results; in addition, if the mixing station does not have the support of an information platform, this method also lacks practicality and operability.

[0054] The quota calculation method is based on existing quota standards and is simple to calculate, but the data in the quota is difficult to accurately represent the situation in the actual production process and there is a certain degree of approximation.

[0055] The data survey method is applicable to situations where there is no actual energy consumption data and can provide a reference when data is missing. However, since actual materials and mechanical equipment are affected by factors such as construction technology, equipment status, and equipment updates, it cannot accurately reflect energy consumption and carbon emissions under different conditions.

[0056] Since it is difficult to obtain data using the on-site measurement method, and the quota method and data survey method cannot accurately reflect the actual carbon emissions, the present application provides a method for calculating carbon emissions in the asphalt mixture production stage, conducts research on the ordinary asphalt mixture production stage, and uses the heat balance equation to establish a theoretical energy consumption model for asphalt and aggregate heating in the ordinary asphalt mixture production stage. The theoretical carbon emissions are calculated based on the range of production parameters involved in the model, and are corrected based on the actual carbon emissions calculated using a large amount of actual energy data, so as to obtain more accurate and reliable carbon emission calculation results for the asphalt mixture production stage.

[0057] Figure 1 A flowchart of a method for calculating carbon emissions in the asphalt mixture production stage provided by an embodiment of the present invention is described in detail as follows:

[0058] Step 101, dividing the asphalt mixture production process into different stages according to different carbon emission sources.

[0059] In this embodiment, the production process of 1 t of ordinary asphalt mixture is divided into three stages: aggregate supply stage, heating stage and mixing plant operation stage, wherein the heating stage includes asphalt heating and aggregate heating.

[0060] Aggregates here refer to granular materials used to make concrete, asphalt and other construction materials, including sand, gravel, crushed stone, aggregate, etc. They usually have different particle sizes and shapes, and play a filling and reinforcing role in construction materials.

[0061] Step 102, respectively calculating the first theoretical carbon emission and the actual carbon emission according to the different stages of division.

[0062] In one embodiment, the asphalt mixture production process is divided into different stages according to the carbon emission sources, so as to calculate the carbon emission according to the different stages. Here, we calculate the theoretical carbon emission of the asphalt mixture production stage according to the heat balance equation.

[0063] Optionally, according to different stages of division, calculating the first theoretical carbon emissions may include:

[0064] Determine the theoretical carbon emissions from asphalt heating based on asphalt heating parameters during the heating process of asphalt mixture production;

[0065] Determine the theoretical carbon emissions from aggregate heating based on aggregate heating parameters during the heating process of asphalt mixture production;

[0066] The first theoretical carbon emissions are determined based on the theoretical carbon emissions generated by asphalt heating and the theoretical carbon emissions generated by aggregate heating.

[0067] See also Figure 2 As shown, when calculating the first theoretical carbon emissions, firstly, the asphalt heating energy consumption model and the aggregate heating energy consumption model are established based on the heat balance equation, and then the energy consumption value is converted into carbon emissions using the carbon emission factor method, and the theoretical carbon emissions generated by asphalt heating and the theoretical carbon emissions generated by aggregate heating are calculated according to the production parameters; then, the addition principle is used to determine the theoretical carbon emissions in the asphalt mixture production process according to the theoretical carbon emissions generated by asphalt heating and the theoretical carbon emissions generated by aggregate heating, that is, the first theoretical carbon emissions.

[0068] It should be noted that when calculating the theoretical carbon emissions during the asphalt mixture production process, only the heating stage is considered.

[0069] First, the purpose here is to distinguish it from the theoretical carbon emissions calculated subsequently, and not for operations such as sorting.

[0070] In one embodiment, determining the theoretical carbon emissions generated by asphalt heating according to asphalt heating parameters in the heating stage of the asphalt mixture production process may include:

[0071] according to Determine theoretical carbon emissions from heating asphalt;

[0072] in, represents the theoretical carbon emission of asphalt heating, in units of , Indicates the asphalt-stone ratio of asphalt mixture, in %. It represents the specific heat capacity of asphalt, in kJ / (kg·℃), It indicates the temperature of asphalt heating during the mixing process of asphalt mixture, in degrees Celsius. Indicates the storage temperature of asphalt during the mixing process of asphalt mixture, in degrees Celsius. Indicates combustion efficiency in %. Indicates heat transfer efficiency in %. Indicates the lower calorific value of natural gas, in units of , Represents the carbon emission factor of natural gas, in units of .

[0073] The following is an example.

[0074] If a station produces 1,000 tons of asphalt concrete-13 (AC), the required production parameters are shown in Table 1.

[0075] Table 1 Production parameters of AC-13

[0076]

[0077] The following is a detailed investigation of the production parameters of AC-13 mixture collected from four mixing stations, including asphalt heating temperature, aggregate heating temperature, oil-stone ratio, mineral powder ratio and aggregate moisture content, as shown in Table 2.

[0078] Table 2 Production parameters of AC-13 mixture

[0079]

[0080] When determining the theoretical carbon emissions of asphalt heating, the specific heat capacity of asphalt is determined to be 1.76 kJ / (kg·℃), the asphalt storage temperature is 100℃, the combustion efficiency is 90%, and the heat transfer efficiency is 60%. Combined with the different oil-to-stone ratios and different heating temperatures in Table 2, the asphalt heating energy consumption model is used to calculate the theoretical carbon emissions in the asphalt heating stage. Due to the large amount of data, only part of the data is intercepted here. The calculation results are shown in Table 3.

[0081] Table 3 Schematic diagram of the calculation of theoretical carbon emissions in the asphalt heating stage

[0082]

[0083] For accuracy of calculation, multiple schemes for calculating theoretical carbon emissions from asphalt heating may be set up in order to calculate the average of theoretical carbon emissions from asphalt heating.

[0084] In one embodiment, determining the theoretical carbon emissions generated by aggregate heating according to aggregate heating parameters in a heating stage during the asphalt mixture production process may include:

[0085] according to Determine theoretical carbon emissions from aggregate heating;

[0086] in, represents the theoretical carbon emission from aggregate heating, in units of , Indicates the proportion of mineral powder in asphalt mixture, in %. Indicates the specific heat capacity of aggregate, in kJ / (kg·℃), Indicates the aggregate heating temperature of asphalt mixture during mixing, in °C. Indicates the temperature of the aggregate before heating, in °C. Indicates the moisture content of aggregate, in %. Represents the specific heat capacity of water, with the unit being kJ / (kg·℃).

[0087] Optionally, when determining the theoretical carbon emissions in the aggregate heating stage, the specific heat capacity of aggregate is 0.92 kJ / (kg·℃), the specific heat capacity of water is 4.19 kJ / (kg·℃), and combined with the different oil-stone ratios, different mineral powder ratios, different heating temperatures, different aggregate moisture contents and other parameters in Table 2, the aggregate heating energy consumption model is used to calculate the theoretical carbon emissions in the aggregate heating stage. Due to the large amount of data, only part of the data is intercepted here. The calculation results are shown in Table 4.

[0088] Table 4 Calculation table of theoretical carbon emissions in aggregate heating stage

[0089]

[0090] For accuracy of calculation, multiple schemes for calculating theoretical carbon emissions from aggregate heating may be set up for each method, so as to calculate the average of the theoretical carbon emissions from aggregate heating.

[0091] In one embodiment, determining a first theoretical carbon emission amount according to the theoretical carbon emission amount generated by heating the asphalt and the theoretical carbon emission amount generated by heating the aggregate includes:

[0092] according to Determine the first theoretical carbon emissions;

[0093] in, Indicates the first theoretical carbon emissions.

[0094] In one embodiment, when calculating the actual carbon emissions according to the different stages of division, refer to Figure 3As shown, first clarify the sources of carbon emissions at different stages. The source of carbon emissions in the aggregate supply stage is diesel, and the aggregate supply is transported to the cold material bin by a loader. The source of carbon emissions in the asphalt and aggregate heating stage is natural gas, which is heated by the boiler to heat the asphalt tank and the burner to heat the drying drum to heat the aggregate. The source of carbon emissions in the mixing plant operation stage is electricity, and the machines and equipment involved include belt conveyors, hot material elevators, vibrating screens, metering systems, and mixing pots. The actual carbon emissions are calculated based on the energy consumption of different carbon emission sources and the corresponding carbon emission factors.

[0095] In one embodiment, after the carbon emission sources at different stages are identified, the carbon emission factor needs to be calculated based on the average lower calorific value, carbon content per unit calorific value, and carbon oxidation rate corresponding to different energy types. See Table 5 for the calculation parameters of carbon emission factors corresponding to different energy types.

[0096] Table 5

[0097]

[0098] Here the carbon emission factor is based on Calculate, where Indicates Carbon emission factor of energy, in or , i.e., unit or No. How much energy is generated of , Indicates the average low heat value, in units of , Indicates the carbon content per unit calorific value, in units of , Indicates the carbon oxidation rate in %.

[0099] In one embodiment, after determining the carbon emission factor, it is also necessary to collect the actual production data of the site to obtain the average energy consumption corresponding to different energy types. For example, by collecting the actual production data of the site, the average energy consumption of diesel can be obtained as 0.17kg, the average unit consumption of natural gas is 5.32m³, and the average unit consumption of electricity is 7.29 kWh.

[0100] Finally, according to the different stages of division, the actual carbon emissions are calculated, which may include:

[0101] According to the energy consumption in the aggregate supply stage, asphalt and aggregate heating stage and mixing plant operation stage in the asphalt mixture production process, the actual carbon emissions are calculated according to the first formula;

[0102] The first formula is ;

[0103] Indicates actual carbon emissions; Indicates Energy consumption, Indicates Carbon emission factors of energy sources, , Indicates the total type of energy.

[0104] See also Figure 2 The schematic diagram of the calculation method of carbon emissions in the asphalt mixture production stage is shown. The production record table and the production batch table are collected, and the data is integrated to obtain the energy data consumed and the output of each batch of AC mixture, thereby obtaining the energy data required to produce 1 ton of AC mixture, and then use the first formula above to calculate the actual carbon emissions.

[0105] For example, the energy consumed in the aggregate supply stage is diesel, the average energy consumption of diesel is 0.17kg, and the actual carbon emissions of diesel can be ;

[0106] The energy consumed in the asphalt and aggregate heating stage is natural gas. The actual production data of the station is collected and the average unit consumption of natural gas is 5.32m³. The actual carbon emissions of natural gas can be =5.32×2.1622=11.503 .

[0107] The energy consumed during the operation of the mixing plant is electricity. The recommended carbon emission factor for electricity is 0.604 t / MWh, which is 0.604 kg / kWh after unit conversion. The actual production data collected from the site shows that the average unit electricity consumption is 7.29 kWh, so the actual carbon emission of electricity can be: =7.29×0.604=4.403 .

[0108] Therefore, the actual carbon emissions in the asphalt mixture production stage are + + =16.432 .

[0109] Step 103: determining a carbon emission correction coefficient according to the first theoretical carbon emission and the actual carbon emission.

[0110] After determining the theoretical and actual carbon emissions of the asphalt mixture production stage, Determine the carbon emission correction factor;

[0111] in, represents the carbon emission correction factor, Indicates the first theoretical carbon emissions.

[0112] Since the prior art cannot take into account the loss problem caused by mechanical equipment, production process, etc. in the actual production process for the theoretical carbon emissions, the actual carbon emissions are used to correct the theoretical carbon emissions in this embodiment to obtain the carbon emission correction factor of the asphalt mixture product, so that the carbon emissions of the asphalt mixture can be predicted later through the carbon emission correction coefficient and actual production parameters, thereby improving the calculation accuracy of the existing theoretical carbon emissions calculation and reducing the calculation complexity of the actual carbon emissions calculation in the prior art.

[0113] Step 104, obtaining the mass of the asphalt mixture to be measured and the second theoretical carbon emission.

[0114] Optionally, the second theoretical carbon emissions are calculated according to the method of calculating the first theoretical carbon emissions in step 102, which will not be described in detail here.

[0115] Step 105, determining the carbon emission of the asphalt mixture to be measured according to the mass of the asphalt mixture to be measured, the second theoretical carbon emission and the carbon emission correction coefficient.

[0116] In one embodiment, determining the carbon emission of the asphalt mixture to be measured according to the mass of the asphalt mixture to be measured, the second theoretical carbon emission and the carbon emission correction coefficient may include:

[0117] according to Determine the carbon emission of the asphalt mixture to be measured;

[0118] in, Indicates the carbon emission of the asphalt mixture to be measured, Indicates the mass of asphalt mixture to be measured, Represents the second theoretical carbon emissions.

[0119] Here, the calculated carbon emission correction coefficient is used to correct the theoretical carbon emissions of the asphalt mixture to be tested, so as to obtain the actual carbon emissions of the asphalt mixture product.

[0120] The embodiment of the present invention provides a method for calculating carbon emissions in the asphalt mixture production stage, by dividing the asphalt mixture production process into different stages according to different carbon emission sources, and then respectively calculating the first theoretical carbon emissions and the actual carbon emissions according to the different stages, and then determining the carbon emission correction factor according to the first theoretical carbon emissions and the actual carbon emissions; to achieve the purpose of determining the carbon emissions of the asphalt mixture to be measured according to the obtained mass of the asphalt mixture to be measured, the second theoretical carbon emissions and the calculated carbon emission correction factor. The embodiment of the present invention obtains the carbon emission correction factor of the asphalt mixture product by using the actual carbon emissions and the theoretical carbon emissions, so that the carbon emissions of the asphalt mixture can be predicted later by the carbon emission correction factor and the actual production parameters, thereby improving the calculation accuracy of the existing theoretical carbon emissions calculation and reducing the calculation complexity of the actual carbon emissions calculation in the prior art.

[0121] In addition, the embodiment of the present invention establishes a theoretical calculation model for carbon emissions during the heating stage of asphalt mixture based on production parameters such as asphalt-stone ratio, asphalt heating temperature, aggregate heating temperature, mineral powder ratio, and aggregate moisture content of asphalt mixture, and calculates the actual carbon emissions of asphalt mixture by investigating the actual production parameter range of different mixing stations, integrating information from two different sources, so that the energy consumption in the asphalt and aggregate heating production process can be more comprehensively considered. Therefore, the carbon emission correction coefficient obtained through theoretical carbon emissions and actual carbon emissions is reasonable and practical. After determining the carbon emission correction coefficient, the calculation model for the carbon emissions of the asphalt mixture to be measured provided in this embodiment can be directly used for calculation, making the calculation simple and highly versatile.

[0122] It should be understood that the order of execution of the steps in the above embodiment does not necessarily mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiment of the present invention.

[0123] The following is an embodiment of the device of the present invention. For details not described in detail therein, reference may be made to the corresponding method embodiment described above.

[0124] Figure 4 The following is a schematic diagram of a device for calculating carbon emissions during the production of asphalt mixtures provided by an embodiment of the present invention. For ease of explanation, only the parts related to the embodiment of the present invention are shown, which are described in detail as follows:

[0125] like Figure 4 As shown, the device 4 for calculating carbon emissions in the asphalt mixture production stage includes: a division module 41 , a calculation module 42 and an acquisition module 43 .

[0126] A division module 41 is used to divide the asphalt mixture production process into different stages according to different carbon emission sources;

[0127] A calculation module 42, used to calculate the first theoretical carbon emission and the actual carbon emission according to different stages of division;

[0128] The calculation module 42 is further used to determine the carbon emission correction coefficient according to the first theoretical carbon emission and the actual carbon emission;

[0129] An acquisition module 43 is used to acquire the mass of the asphalt mixture to be measured and the second theoretical carbon emission;

[0130] The calculation module 43 is further used to determine the carbon emission of the asphalt mixture to be measured according to the mass of the asphalt mixture to be measured, the second theoretical carbon emission and the carbon emission correction coefficient.

[0131] In a possible implementation, the calculation module 42 calculates the first theoretical carbon emission according to the different stages of division, and is used to:

[0132] Determine the theoretical carbon emissions from asphalt heating based on asphalt heating parameters during the heating phase of asphalt mixture production;

[0133] Determine the theoretical carbon emissions from aggregate heating based on aggregate heating parameters during the heating phase of asphalt mixture production;

[0134] The first theoretical carbon emissions are determined based on the theoretical carbon emissions generated by asphalt heating and the theoretical carbon emissions generated by aggregate heating.

[0135] In a possible implementation, the calculation module 42 determines the theoretical carbon emissions generated by heating the asphalt according to the asphalt heating parameters in the heating stage of the asphalt mixture production process, and is used to:

[0136] according to Determine theoretical carbon emissions from heating asphalt;

[0137] in, represents the theoretical carbon emissions from asphalt heating, Indicates the asphalt-stone ratio of asphalt mixture. represents the specific heat capacity of asphalt, Indicates the temperature of asphalt heating during the mixing process of asphalt mixture. Indicates the storage temperature of asphalt during the mixing process of asphalt mixture. Indicates the combustion efficiency, represents the heat transfer efficiency, Indicates the low calorific value of natural gas. Represents the carbon emission factor of natural gas.

[0138] In a possible implementation, the calculation module 42 determines the theoretical carbon emissions generated by aggregate heating according to the aggregate heating parameters in the heating stage of the asphalt mixture production process, and is used to:

[0139] according to Determine theoretical carbon emissions from aggregate heating;

[0140] in, represents the theoretical carbon emission from aggregate heating, Indicates the mineral powder ratio of asphalt mixture. is the specific heat capacity of aggregate, Indicates the aggregate heating temperature during the mixing process of asphalt mixture. Indicates the temperature of aggregate before heating, represents the moisture content of aggregate, Represents the specific heat capacity of water.

[0141] In a possible implementation, the calculation module 42 determines the first theoretical carbon emission according to the theoretical carbon emission generated by heating the asphalt and the theoretical carbon emission generated by heating the aggregate by:

[0142] according to Determine the first theoretical carbon emissions;

[0143] in, Indicates the first theoretical carbon emissions.

[0144] In a possible implementation, the calculation module 42 calculates the actual carbon emissions according to the different stages of division, and is used to:

[0145] According to the energy consumption in the aggregate supply stage, asphalt and aggregate heating stage and mixing plant operation stage in the asphalt mixture production process, the actual carbon emissions are calculated according to the first formula;

[0146] The first formula is ;

[0147] Indicates actual carbon emissions; Indicates Energy consumption, Indicates Carbon emission factors of energy sources, , Indicates the total type of energy.

[0148] In a possible implementation, when the calculation module 42 determines the carbon emission correction coefficient according to the first theoretical carbon emission and the actual carbon emission, it is used to:

[0149] according to Determine the carbon emission correction factor;

[0150] in, represents the carbon emission correction factor, Indicates the first theoretical carbon emissions.

[0151] In a possible implementation, the calculation module 42 determines the carbon emission of the asphalt mixture to be measured according to the mass of the asphalt mixture to be measured, the second theoretical carbon emission and the carbon emission correction coefficient, and is used to:

[0152] according to Determine the carbon emission of the asphalt mixture to be measured;

[0153] in, Indicates the carbon emission of the asphalt mixture to be measured, Indicates the mass of asphalt mixture to be measured, Represents the second theoretical carbon emissions.

[0154] The above embodiment provides a device for calculating carbon emissions in the asphalt mixture production stage, which divides the asphalt mixture production process into different stages according to different carbon emission sources through a division module, and then according to the different stages of the division, the calculation module calculates the first theoretical carbon emissions and the actual carbon emissions respectively, and then determines the carbon emission correction coefficient according to the first theoretical carbon emissions and the actual carbon emissions; to achieve the purpose of determining the carbon emissions of the asphalt mixture to be measured according to the obtained mass of the asphalt mixture to be measured, the second theoretical carbon emissions and the calculated carbon emission correction coefficient. The embodiment of the present invention uses the actual carbon emissions and the theoretical carbon emissions to obtain the carbon emission correction factor of the asphalt mixture product, so that the carbon emissions of the asphalt mixture can be predicted later through the carbon emission correction coefficient and the actual production parameters, thereby improving the calculation accuracy of the existing theoretical carbon emissions calculation and reducing the calculation complexity of the actual carbon emissions calculation in the prior art.

[0155] In addition, the embodiment of the present invention establishes a theoretical calculation model for carbon emissions during the heating stage of asphalt mixture based on production parameters such as asphalt-stone ratio, asphalt heating temperature, aggregate heating temperature, mineral powder ratio, and aggregate moisture content of asphalt mixture, and calculates the actual carbon emissions of asphalt mixture by investigating the actual production parameter range of different mixing stations, integrating information from two different sources, so that the energy consumption in the asphalt and aggregate heating production process can be more comprehensively considered. Therefore, the carbon emission correction coefficient obtained through theoretical carbon emissions and actual carbon emissions is reasonable and practical. After determining the carbon emission correction coefficient, the calculation model for the carbon emissions of the asphalt mixture to be measured provided in this embodiment can be directly used for calculation, making the calculation simple and highly versatile.

[0156] Figure 5is a schematic diagram of a terminal provided by an embodiment of the present invention. Figure 5 As shown, the terminal 5 of this embodiment includes: a processor 50, a memory 51, and a computer program 52 stored in the memory 51 and executable on the processor 50. When the processor 50 executes the computer program 52, the steps in the above-mentioned method for calculating carbon emissions at each asphalt mixture production stage are implemented, for example Figure 1 Alternatively, when the processor 50 executes the computer program 52, the functions of each module / unit in the above-mentioned device embodiments are realized, for example, Figure 4 The functions of each module / unit are shown.

[0157] Exemplarily, the computer program 52 may be divided into one or more modules / units, which are stored in the memory 51 and executed by the processor 50 to implement the present invention. The one or more modules / units may be a series of computer program instruction segments capable of implementing specific functions, which are used to describe the execution process of the computer program 52 in the terminal 5. For example, the computer program 52 may be divided into Figure 4 The modules / units shown.

[0158] The terminal 5 may include, but is not limited to, a processor 50 and a memory 51. Those skilled in the art will appreciate that Figure 5 It is only an example of terminal 5 and does not constitute a limitation on terminal 5. It may include more or fewer components than shown in the figure, or a combination of certain components, or different components. For example, the terminal may also include input and output devices, network access devices, buses, etc.

[0159] The processor 50 may be a central processing unit (CPU), or other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field-programmable gate arrays (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor may be a microprocessor or any conventional processor, etc.

[0160] The memory 51 may be an internal storage unit of the terminal 5, such as a hard disk or memory of the terminal 5. The memory 51 may also be an external storage device of the terminal 5, such as a plug-in hard disk, a smart media card (SMC), a secure digital (SD) card, a flash card, etc. equipped on the terminal 5. Further, the memory 51 may include both an internal storage unit of the terminal 5 and an external storage device. The memory 51 is used to store the computer program and other programs and data required by the terminal. The memory 51 may also be used to temporarily store data that has been output or is to be output.

[0161] The technicians in the relevant field can clearly understand that for the convenience and simplicity of description, only the division of the above-mentioned functional units and modules is used as an example for illustration. In practical applications, the above-mentioned function allocation can be completed by different functional units and modules as needed, that is, the internal structure of the device can be divided into different functional units or modules to complete all or part of the functions described above. The functional units and modules in the embodiment can be integrated in a processing unit, or each unit can exist physically separately, or two or more units can be integrated in one unit. The above-mentioned integrated unit can be implemented in the form of hardware or in the form of software functional units. In addition, the specific names of the functional units and modules are only for the convenience of distinguishing each other, and are not used to limit the scope of protection of this application. The specific working process of the units and modules in the above-mentioned system can refer to the corresponding process in the aforementioned method embodiment, which will not be repeated here.

[0162] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described or recorded in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0163] Those skilled in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of the present invention.

[0164] In the embodiments provided by the present invention, it should be understood that the disclosed devices / terminals and methods can be implemented in other ways. For example, the device / terminal embodiments described above are only schematic. For example, the division of the modules or units is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0165] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0166] In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0167] If the integrated module / unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the present invention implements all or part of the processes in the above-mentioned embodiment method, and can also be completed by instructing the relevant hardware through a computer program. The computer program can be stored in a computer-readable storage medium. When the computer program is executed by the processor, the steps of the above-mentioned carbon emission calculation method embodiment of each asphalt mixture production stage can be implemented. Among them, the computer program includes computer program code, and the computer program code can be in source code form, object code form, executable file or some intermediate form. The computer-readable medium may include: any entity or device that can carry the computer program code, recording medium, U disk, mobile hard disk, magnetic disk, optical disk, computer memory, read-only memory (ROM), random access memory (RAM), electric carrier signal, telecommunication signal and software distribution medium.

[0168] The embodiments described above are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention, and should all be included in the protection scope of the present invention.

Claims

1. A method for calculating carbon emissions during the asphalt mixture production stage, characterized in that: include: The asphalt mixture production process is divided into different stages according to different carbon emission sources; According to the different stages of division, the first theoretical carbon emissions and actual carbon emissions are calculated respectively; Determining a carbon emission correction factor according to the first theoretical carbon emission and the actual carbon emission; Obtain the mass of the asphalt mixture to be measured and the second theoretical carbon emission; Determining the carbon emission of the asphalt mixture to be measured according to the mass of the asphalt mixture to be measured, the second theoretical carbon emission and the carbon emission correction coefficient; According to the different stages of division, the first theoretical carbon emissions are calculated, including: Determining theoretical carbon emissions generated by heating of asphalt according to asphalt heating parameters in a heating stage of the asphalt mixture production process; Determining theoretical carbon emissions generated by aggregate heating according to aggregate heating parameters in a heating stage of the asphalt mixture production process; Determine a first theoretical carbon emission according to the theoretical carbon emission generated by heating of asphalt and the theoretical carbon emission generated by heating of aggregates; Calculate the actual carbon emissions according to different stages of division, including: According to the energy consumption in the aggregate supply stage, asphalt and aggregate heating stage and mixing plant operation stage in the asphalt mixture production process, the actual carbon emissions are calculated according to the first formula; The first formula is ; Indicates actual carbon emissions; Indicates Energy consumption, Indicates Carbon emission factors of energy sources, , Indicates the total type of energy; Determining a carbon emission correction factor according to the first theoretical carbon emission and the actual carbon emission includes: according to Determine the carbon emission correction factor; in, represents the carbon emission correction factor, represents the first theoretical carbon emission; Determining the carbon emission of the asphalt mixture to be measured according to the mass of the asphalt mixture to be measured, the second theoretical carbon emission and the carbon emission correction coefficient, includes: according to Determining the carbon emission of the asphalt mixture to be measured; in, represents the carbon emission of the asphalt mixture to be measured, Indicates the mass of asphalt mixture to be measured, Represents the second theoretical carbon emissions.

2. The method for calculating carbon emissions during the asphalt mixture production stage according to claim 1, characterized in that: The method of determining the theoretical carbon emissions generated by heating the asphalt according to the asphalt heating parameters in the heating stage of the asphalt mixture production process includes: according to Determine theoretical carbon emissions from heating asphalt; in, represents the theoretical carbon emissions from asphalt heating, Indicates the asphalt-stone ratio of asphalt mixture. represents the specific heat capacity of asphalt, Indicates the temperature of asphalt heating during the mixing process of asphalt mixture. Indicates the storage temperature of asphalt during the mixing process of asphalt mixture. Indicates the combustion efficiency, represents the heat transfer efficiency, Indicates the low calorific value of natural gas. Represents the carbon emission factor of natural gas.

3. The method for calculating carbon emissions during the asphalt mixture production stage according to claim 2, characterized in that: The method of determining the theoretical carbon emissions generated by the heating of aggregates according to the aggregate heating parameters in the heating stage of the asphalt mixture production process comprises: according to Determine theoretical carbon emissions from aggregate heating; in, represents the theoretical carbon emission from aggregate heating, Indicates the mineral powder ratio of asphalt mixture. represents the specific heat capacity of aggregate, Indicates the aggregate heating temperature during the mixing process of asphalt mixture. Indicates the temperature of aggregate before heating, represents the moisture content of aggregate, Represents the specific heat capacity of water.

4. The method for calculating carbon emissions during the asphalt mixture production stage according to claim 3, characterized in that: The determining of the first theoretical carbon emissions according to the theoretical carbon emissions generated by heating the asphalt and the theoretical carbon emissions generated by heating the aggregates comprises: according to Determine the first theoretical carbon emissions; in, Indicates the first theoretical carbon emissions.

5. A device for calculating carbon emissions during the production of asphalt mixture, characterized in that: include: A division module is used to divide the asphalt mixture production process into different stages according to different carbon emission sources; A calculation module, used for respectively calculating the first theoretical carbon emission and the actual carbon emission according to different stages of division; The calculation module is further used to determine a carbon emission correction coefficient according to the first theoretical carbon emission and the actual carbon emission; An acquisition module, used for acquiring the mass of the asphalt mixture to be measured and the second theoretical carbon emission; The calculation module is further used to determine the carbon emission of the asphalt mixture to be measured according to the mass of the asphalt mixture to be measured, the second theoretical carbon emission and the carbon emission correction coefficient; According to the different stages of division, the first theoretical carbon emissions are calculated, including: Determining theoretical carbon emissions generated by heating of asphalt according to asphalt heating parameters in a heating stage of the asphalt mixture production process; Determining theoretical carbon emissions generated by aggregate heating according to aggregate heating parameters in a heating stage of the asphalt mixture production process; Determine a first theoretical carbon emission according to the theoretical carbon emission generated by heating of asphalt and the theoretical carbon emission generated by heating of aggregates; Calculate the actual carbon emissions according to different stages of division, including: According to the energy consumption in the aggregate supply stage, asphalt and aggregate heating stage and mixing plant operation stage in the asphalt mixture production process, the actual carbon emissions are calculated according to the first formula; The first formula is ; Indicates actual carbon emissions; Indicates Energy consumption, Indicates Carbon emission factors of energy sources, , Indicates the total type of energy; Determining a carbon emission correction factor according to the first theoretical carbon emission and the actual carbon emission includes: according to Determine the carbon emission correction factor; in, represents the carbon emission correction factor, represents the first theoretical carbon emission; Determining the carbon emission of the asphalt mixture to be measured according to the mass of the asphalt mixture to be measured, the second theoretical carbon emission and the carbon emission correction coefficient, includes: according to Determining the carbon emission of the asphalt mixture to be measured; in, represents the carbon emission of the asphalt mixture to be measured, Indicates the mass of asphalt mixture to be measured, Represents the second theoretical carbon emissions.

6. A terminal comprising a memory and a processor, wherein the memory is used to store a computer program, and the processor is used to call and run the computer program stored in the memory, characterized in that: When the processor executes the computer program, the steps of the method for calculating carbon emissions in the asphalt mixture production stage as described in any one of claims 1 to 4 are implemented.

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