CN114166998A - Carbon emission metering method and system for cement production enterprise - Google Patents
Carbon emission metering method and system for cement production enterprise Download PDFInfo
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- CN114166998A CN114166998A CN202111444883.1A CN202111444883A CN114166998A CN 114166998 A CN114166998 A CN 114166998A CN 202111444883 A CN202111444883 A CN 202111444883A CN 114166998 A CN114166998 A CN 114166998A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
- G01N33/0027—General constructional details of gas analysers, e.g. portable test equipment concerning the detector
- G01N33/0036—Specially adapted to detect a particular component
- G01N33/004—Specially adapted to detect a particular component for CO, CO2
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
- G01N33/0062—General constructional details of gas analysers, e.g. portable test equipment concerning the measuring method, e.g. intermittent, or the display, e.g. digital
Abstract
The invention discloses a carbon emission metering method for cement manufacturing enterprises, which comprises the following steps: s1: direct real-time monitoring and calculation of carbon emission of cement production enterprises; s2: carrying out carbon emission check on cement production enterprises; s3: the data obtained in step S1 and step S2 are summarized. The invention also discloses a carbon emission metering system for the cement manufacturing enterprise. The invention provides a carbon emission metering system by developing real-time monitoring and calculation of carbon emission, which is used for calculating the carbon emission condition of a cement plant in real time, acquiring and calculating direct carbon dioxide emission data and indirect carbon dioxide emission data, calculating an actual emission factor according to the data obtained by a sampling system, and calculating the carbon emission amount of the cement plant, thereby realizing a simple and credible carbon emission metering and monitoring method for the cement plant.
Description
Technical Field
The invention relates to the technical field of industrial carbon emission measurement, in particular to a method and a system for measuring carbon emission of a cement production enterprise.
Background
With the rapid growth of the world's economy, environmental problems have become more serious, and greenhouse gas emissions in particular have become the focus of global attention. The cement industry is used as an energy and resource consumption intensive industry, is one of main prop industries of national economy, and is also a carbon emission large household. The cement is an important basic raw material for national economic construction, the production capacity is large, and the problem of carbon emission in cement production cannot be ignored. Modern cement production technology is a system engineering that includes several sub-processes and unit operations. Enterprises are influenced by various factors such as raw fuel sources, product varieties and quantity changes, the complexity of carbon emission calculation is increased, the accuracy of carbon emission measurement can be questioned sometimes, and therefore a simple and credible carbon emission measurement and monitoring means is necessary for reducing greenhouse gas emission of the enterprises for the enterprises to adopt.
Disclosure of Invention
The invention provides a carbon emission metering method and system for a cement manufacturing enterprise, which have the advantages that reliable carbon emission data of the cement manufacturing enterprise can be provided, and the carbon emission of the cement manufacturing enterprise is favorably monitored and managed.
In one aspect, the invention provides a carbon emission metering method for a cement production enterprise, which comprises the following steps:
s1: direct real-time monitoring and calculation of carbon emission of cement production enterprises;
s2: carrying out carbon emission check on cement production enterprises;
s3: the data obtained in step S1 and step S2 are summarized.
Preferably, the step S1 of monitoring the direct carbon emission of the cement manufacturing enterprise in real time is to monitor and calculate the carbon dioxide content in the flue gas emission of the cement manufacturing enterprise.
Preferably, the step of conducting the carbon emission check on the cement manufacturing enterprise as described in the step S2 includes the following steps:
s21, performing carbon emission check on the raw materials, auxiliary materials and fuel in the cement production, and calculating the carbon emission of the raw materials, auxiliary materials and fuel in the production process;
s22, performing carbon emission check on clinker production in cement production, and calculating the carbon emission of the clinker in the production process;
s23: and (4) carrying out carbon emission check on cement production, and calculating the carbon emission in the cement production process.
Preferably, the check in step S2 includes direct carbon dioxide emissions and indirect carbon dioxide emissions;
the direct carbon dioxide emission is calculated by a carbon emission factor method according to the produced materials;
the indirect carbon dioxide emission is obtained by counting the electricity consumption information in each process of cement production and performing carbon conversion on the electricity consumption condition.
Preferably, the direct carbon dioxide emissions in the clinker production in the cement production are multiplied by the actual emission factor when the carbon emission check is performed.
Preferably, the step of calculating the actual emission factor includes:
1) estimating the dry weight of the waste containing non-carbonate calcium oxide in the material production process;
2) estimating the quantity and the content of the waste/byproduct calcium oxide containing non-carbonate calcium oxide in the clinker;
3) estimating the content of calcium oxide without non-carbonate calcium oxide in the clinker;
4) the actual emission factor is obtained by multiplying the ratio of the molecular weight of calcium oxide to carbon dioxide by the calcium oxide content of non-carbonate calcium oxide.
Preferably, the data summarization of the data obtained in step S1 and step S2 as described in step S3 is performed by summing the data obtained in step S1 and step S2.
In another aspect, the present invention provides a carbon emission metering system for a cement manufacturing enterprise, the system comprising: the device comprises a carbon emission real-time calculation module, an acquisition module, a sampling module and an accounting module; the system comprises an acquisition module, a sampling module, a carbon emission real-time calculation module, a calculation module and an accounting module, wherein the acquisition module is used for acquiring data of electric equipment, raw materials and fuels in cement production, the sampling module is used for acquiring carbon dioxide emission values of flue gas sampling under different working conditions, the carbon emission real-time calculation module is used for calculating direct carbon emission data of cement production enterprises in real time according to the data of the sampling module, and the accounting module is used for accounting the carbon emission of the cement production enterprises according to the data acquired by the acquisition module and calculating direct carbon dioxide emission and indirect carbon dioxide in each link of a cement production process.
Preferably, the carbon emission real-time calculation module monitors the direct carbon dioxide emission of a chimney of the cement plant on line, monitors the electric energy use condition, performs carbon conversion on the power utilization condition, combines the direct carbon dioxide emission and the power utilization condition subjected to carbon conversion, and calculates the carbon emission condition of the cement plant in real time.
Preferably, direct carbon dioxide emission in each link of the cement production process is calculated by a carbon emission factor method according to the produced materials; the indirect carbon emission in each link of the cement production process is obtained by counting the electricity consumption information of each link of the cement production process and performing carbon conversion on the electricity consumption condition.
In conclusion, the invention has the advantages that the carbon emission measurement system is provided by developing the real-time monitoring calculation of the carbon emission, the carbon emission condition of the cement plant is calculated in real time, the direct carbon dioxide emission data and the indirect carbon dioxide emission data are acquired and calculated, the actual emission factor is calculated according to the data obtained by the sampling system, and the carbon emission measurement and monitoring method for the cement enterprise is simple and credible.
Drawings
FIG. 1 is a flow chart of a carbon emission metering method for a cement manufacturing enterprise according to the present invention.
FIG. 2 is a block diagram of a carbon emission metering system for a cement manufacturing enterprise according to the present invention.
Detailed Description
The following detailed description of embodiments of the invention refers to the accompanying drawings.
The first embodiment is as follows: referring to fig. 1, a method for measuring carbon emission of a cement manufacturing enterprise includes the following steps:
s1: direct real-time monitoring and calculation of carbon emission of cement production enterprises;
s2: carrying out carbon emission check on cement production enterprises;
s3: the data obtained in step S1 and step S2 are summarized.
The step S1 of monitoring and calculating the carbon dioxide content in the flue gas emission of the cement manufacturing enterprise in real time by the direct carbon emission of the cement manufacturing enterprise. The direct emission of the carbon dioxide in the flue gas is acquired, and a laser analysis device for the carbon dioxide in the flue gas of a cement plant can be generally adopted to directly acquire the carbon dioxide emission condition of the flue gas of the cement plant.
Monitoring means that representative values are determined, since the cement production is mainly direct CO2The emissions originate from the kiln, i.e. with a fixed source of emissions, whereby the CO can be determined by monitoring2And (4) discharging the amount. For the flue gas flow in the exhaust funnel at the tail part of the kiln and CO in the flue gas2The content is monitored, and direct CO can be analyzed and calculated2Instantaneous value of emissions; through accumulative calculation and data processing, the direct CO of the kiln in a period of time can be calculated statistically2And (4) discharging the amount.
The step of conducting carbon emission verification on the cement manufacturing enterprise described in the step S2 includes the steps of:
s21, performing carbon emission check on the raw materials, auxiliary materials and fuel in the cement production, and calculating the carbon emission of the raw materials, auxiliary materials and fuel in the production process;
s22, performing carbon emission check on clinker production in cement production, and calculating the carbon emission of the clinker in the production process;
s23: and (4) carrying out carbon emission check on cement production, and calculating the carbon emission in the cement production process.
The checking in the step S2 is performed by counting the carbon dioxide generated in each link of the cement production process, and checking the classification of the production steps, including the direct carbon dioxide emission and the indirect carbon dioxide emission;
the direct carbon dioxide emission is calculated by a carbon emission factor method according to the produced materials; the carbon emission factor method is a carbon emission estimation method proposed by IPCC (international commission on climate change between governments of united states), and is also a method widely used at present, and the activity data and the emission factor of each emission source are constructed according to a list of carbon emission lists, and the product of the activity data and the emission factor is used as the estimated carbon emission value of the emission item.
The indirect carbon dioxide emission is obtained by counting electricity consumption information in each process of cement production and performing carbon conversion on electricity consumption (converting the carbon dioxide emission of 0.997 kg according to one-time electricity conversion).
In carbon emission checks for clinker production in cement production, the direct carbon dioxide emissions therein need to be multiplied by the actual emission factor.
The step of calculating the actual emission factor comprises the following steps:
1) estimating the dry weight of the waste containing non-carbonate calcium oxide in the material production process;
2) estimating the quantity and the content of the waste/byproduct calcium oxide containing non-carbonate calcium oxide in the clinker;
3) estimating the content of calcium oxide without non-carbonate calcium oxide in the clinker;
4) the actual emission factor is obtained by multiplying the ratio of the molecular weight of calcium oxide to carbon dioxide by the calcium oxide content of non-carbonate calcium oxide.
The cement clinker is burned in a manner that most of the carbonates in the raw meal are heated to produce carbon dioxide and calcium oxide, but other raw materials in the raw meal also contain a certain amount of calcium oxide, which also enters the clinker, and this part is non-carbonate calcium oxide. When the carbon emission check is carried out on the clinker production in the cement production, the direct carbon dioxide emission is multiplied by the actual emission factor, so that the accuracy of the carbon emission check is improved.
In the verification, data information collection is mainly performed, and the whole process of measurement and recording is included. The emission accounting of CO2 in cement production is to measure and record the emission of CO2 in the whole cement production process and the main process, and calculate data information such as total emission of CO2 and emission of unit products based on raw materials, fuel, electric power consumption and production yield. The emission accounting of CO2 in cement production comprises the steps of firstly analyzing each emission source and emission characteristics in the production process, and statistically calculating the emission of CO2 within a period of time and an operation boundary by measuring material balance and heat balance and combining emission factors in each process.
The step S3 of summarizing the data obtained in the step S1 and the step S2 is to sum the data obtained in the step S1 and the data obtained in the step S2, so as to obtain the total carbon emission of the cement manufacturing enterprise, including the carbon emission indirectly generated in the cement manufacturing, and the data is credible.
Example two: referring to fig. 2, a cement manufacturing enterprise carbon emissions metering system, the system comprising: the device comprises a carbon emission real-time calculation module, an acquisition module, a sampling module and an accounting module; the system comprises an acquisition module, a sampling module, a carbon emission real-time calculation module, a calculation module and an accounting module, wherein the acquisition module is used for acquiring data of electric equipment, raw materials and fuels in cement production, the sampling module is used for acquiring carbon dioxide emission values of flue gas sampling under different working conditions, the carbon emission real-time calculation module is used for calculating direct carbon emission data of cement production enterprises in real time according to the data of the sampling module, and the accounting module is used for accounting the carbon emission of the cement production enterprises according to the data acquired by the acquisition module and calculating direct carbon dioxide emission and indirect carbon dioxide in each link of a cement production process.
The carbon emission real-time calculation module monitors the electric energy use condition through the direct carbon dioxide emission of the chimney of the online monitoring cement plant, performs carbon conversion on the electricity utilization condition, combines the direct carbon dioxide emission and the electricity utilization condition subjected to the carbon conversion, and calculates the carbon emission condition of the cement plant in real time.
Direct carbon dioxide emission in each link of the cement production process is subjected to direct carbon emission accounting according to the produced materials by a carbon emission factor method; the indirect carbon emission in each link of the cement production process is obtained by counting the electricity consumption information of each link of the cement production process and performing carbon conversion on the electricity consumption condition.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various changes and modifications can be made without departing from the inventive concept of the present invention, and these changes and modifications are all within the scope of the present invention.
Claims (10)
1. A carbon emission metering method for a cement production enterprise is characterized by comprising the following steps:
s1: direct real-time monitoring and calculation of carbon emission of cement production enterprises;
s2: carrying out carbon emission check on cement production enterprises;
s3: the data obtained in step S1 and step S2 are summarized.
2. The method for measuring carbon emissions from a cement manufacturing enterprise of claim 1, wherein the step S1 is implemented by monitoring and calculating the carbon dioxide content in the flue gas emissions of the cement manufacturing enterprise in real time.
3. The method for carbon emission measurement in a cement manufacturing plant according to claim 2, wherein the step of conducting a carbon emission check on the cement manufacturing plant in step S2 comprises the steps of:
s21, performing carbon emission check on the raw materials, auxiliary materials and fuel in the cement production, and calculating the carbon emission of the raw materials, auxiliary materials and fuel in the production process;
s22, performing carbon emission check on clinker production in cement production, and calculating the carbon emission of the clinker in the production process;
s23: and (4) carrying out carbon emission check on cement production, and calculating the carbon emission in the cement production process.
4. The cement manufacturing enterprise carbon emission metering method according to claim 3, wherein the check in step S2 includes direct carbon dioxide emissions and indirect carbon dioxide emissions;
the direct carbon dioxide emission is calculated by a carbon emission factor method according to the produced materials;
the indirect carbon dioxide emission is obtained by counting the electricity consumption information in each process of cement production and performing carbon conversion on the electricity consumption condition.
5. The method of claim 4, wherein the direct carbon dioxide emissions are multiplied by the actual emissions factor when a carbon emissions check is performed on clinker production in cement production.
6. The cement manufacturing enterprise carbon emission metering method according to claim 5, wherein the calculating step of the actual emission factor comprises the steps of:
1) estimating the dry weight of the waste containing non-carbonate calcium oxide in the material production process;
2) estimating the quantity and the content of the waste/byproduct calcium oxide containing non-carbonate calcium oxide in the clinker;
3) estimating the content of calcium oxide without non-carbonate calcium oxide in the clinker;
4) the actual emission factor is obtained by multiplying the ratio of the molecular weight of calcium oxide to carbon dioxide by the calcium oxide content of non-carbonate calcium oxide.
7. The method for metering carbon emissions from a cement manufacturing plant according to claim 1, wherein the step of summarizing the data obtained in the step S1 and the step S2 in the step S3 is always summing the data obtained in the step S1 and the step S2.
8. A cement manufacturing enterprise carbon emissions metering system, the system comprising: the device comprises a carbon emission real-time calculation module, an acquisition module, a sampling module and an accounting module; the system comprises an acquisition module, a sampling module, a carbon emission real-time calculation module, a calculation module and an accounting module, wherein the acquisition module is used for acquiring data of electric equipment, raw materials and fuels in cement production, the sampling module is used for acquiring carbon dioxide emission values of flue gas sampling under different working conditions, the carbon emission real-time calculation module is used for calculating direct carbon emission data of cement production enterprises in real time according to the data of the sampling module, and the accounting module is used for accounting the carbon emission of the cement production enterprises according to the data acquired by the acquisition module and calculating direct carbon dioxide emission and indirect carbon dioxide in each link of a cement production process.
9. The carbon emission metering system of the cement manufacturing enterprise according to claim 8, wherein the carbon emission real-time calculation module monitors the direct carbon dioxide emission of a chimney of the cement plant on line, monitors the electric energy use condition, performs carbon conversion on the electricity utilization condition, combines the direct carbon dioxide emission and the electricity utilization condition subjected to the carbon conversion, and calculates the carbon emission condition of the cement plant in real time.
10. The cement manufacturing enterprise carbon emission metering system of claim 8, wherein direct carbon dioxide emission in each link of the cement manufacturing process is accounted for by direct carbon emission factor method according to the produced materials; the indirect carbon emission in each link of the cement production process is obtained by counting the electricity consumption information of each link of the cement production process and performing carbon conversion on the electricity consumption condition.
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Cited By (3)
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| CN115114346A (en) * | 2022-04-15 | 2022-09-27 | 安徽南瑞中天电力电子有限公司 | Refined carbon emission informatization acquisition and accounting method, system and terminal |
| CN115438912A (en) * | 2022-08-04 | 2022-12-06 | 欧冶工业品股份有限公司 | Comprehensive management method and system for carbon emission information data of industrial product purchase supply chain |
| WO2023206053A1 (en) * | 2022-04-26 | 2023-11-02 | 北京航空航天大学苏州创新研究院 | Cement production carbon emission accounting method |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115114346A (en) * | 2022-04-15 | 2022-09-27 | 安徽南瑞中天电力电子有限公司 | Refined carbon emission informatization acquisition and accounting method, system and terminal |
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