CN115861006A - Carbon dioxide emission calculation method and carbon management system for coal-fired power generation enterprise - Google Patents
Carbon dioxide emission calculation method and carbon management system for coal-fired power generation enterprise Download PDFInfo
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- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 title claims abstract description 293
- 229910052799 carbon Inorganic materials 0.000 title claims abstract description 146
- 229910002092 carbon dioxide Inorganic materials 0.000 title claims abstract description 146
- 239000001569 carbon dioxide Substances 0.000 title claims abstract description 146
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 145
- 238000004364 calculation method Methods 0.000 title claims abstract description 44
- 238000010248 power generation Methods 0.000 title claims abstract description 38
- 239000003245 coal Substances 0.000 claims abstract description 258
- 238000000034 method Methods 0.000 claims abstract description 71
- 238000006477 desulfuration reaction Methods 0.000 claims abstract description 70
- 230000023556 desulfurization Effects 0.000 claims abstract description 69
- 238000002485 combustion reaction Methods 0.000 claims abstract description 56
- 239000002893 slag Substances 0.000 claims abstract description 44
- 239000010881 fly ash Substances 0.000 claims abstract description 30
- 238000012544 monitoring process Methods 0.000 claims abstract description 11
- 238000005265 energy consumption Methods 0.000 claims abstract description 6
- 230000003009 desulfurizing effect Effects 0.000 claims description 68
- 239000003795 chemical substances by application Substances 0.000 claims description 55
- 230000005611 electricity Effects 0.000 claims description 39
- 238000007726 management method Methods 0.000 claims description 35
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 claims description 26
- 239000000428 dust Substances 0.000 claims description 24
- 238000004519 manufacturing process Methods 0.000 claims description 18
- 238000006243 chemical reaction Methods 0.000 claims description 11
- 238000004458 analytical method Methods 0.000 claims description 8
- 238000001514 detection method Methods 0.000 claims description 7
- 238000007405 data analysis Methods 0.000 claims description 5
- 229910002090 carbon oxide Inorganic materials 0.000 claims 1
- 230000007613 environmental effect Effects 0.000 abstract description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 13
- 239000010813 municipal solid waste Substances 0.000 description 5
- 238000012545 processing Methods 0.000 description 4
- 239000002803 fossil fuel Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000004056 waste incineration Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003818 cinder Substances 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 238000013500 data storage Methods 0.000 description 1
- 230000000593 degrading effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 238000012946 outsourcing Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000002910 solid waste Substances 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
The invention provides a carbon dioxide emission calculation method and a carbon management system for a coal-fired power generation enterprise, and belongs to the technical field of environmental monitoring. Calculating the monthly average element carbon content and annual coal consumption of coal combustion; calculating annual slag and fly ash yield, monthly average carbon content and annual consumption of a desulfurizer; and acquiring net purchased electric quantity, and calculating the total emission E of carbon dioxide through the emission of carbon dioxide in the processes of coal combustion, desulfurization and power utilization. And when the total emission E of the carbon dioxide exceeds a preset proportion of the carbon emission annual quota, early warning is carried out, an energy-saving scheme is given out, and meanwhile, when the energy consumption condition exceeds the carbon asset quota, an alarm is given. The method can accurately calculate the carbon dioxide emission of coal-fired power generation enterprises, and can give an energy-saving scheme by early warning of the carbon emission.
Description
Technical Field
The invention relates to the technical field of environmental monitoring, in particular to a carbon dioxide emission calculation method and a carbon management system for coal-fired power generation enterprises.
Background
According to the investigation of the current carbon management, no platform related to the carbon management of the coal-fired power generation enterprises exists in the enterprises, and the platform is used for calculating the carbon dioxide emission amount, managing the carbon assets, managing the carbon quota and the like of the enterprises, so that the problems of resource waste, cost increase and the like are solved.
Carbon management software in the existing market generally only comprises data acquisition, data storage, real-time monitoring and data analysis, monitors the carbon energy service condition of an enterprise, stores carbon number data and finally gives out data analysis, but can not accurately calculate carbon dioxide emission and well meet the carbon management requirement of the enterprise for the carbon management software in the large environment of carbon emission management. The carbon management system not only needs to be capable of monitoring and analyzing data, but also needs to calculate the existing data, and meanwhile, the data is processed in a visual mode to generate an energy consumption situation scheme, so that comparison is carried out, and an energy-saving effect is achieved.
Chinese patent application document CN115358553A discloses a carbon management system for waste incineration power generation enterprises, which includes: the data acquisition module is used for acquiring project basic data and accounting parameters of at least one project of the waste incineration power generation enterprise; the data processing module is used for calculating carbon emission, a datum line and carbon emission reduction according to the project basic data and the accounting parameters; the prediction module is used for predicting the variation trend of one or more of the carbon emission, the baseline and the carbon emission reduction amount in a future preset time; and the carbon transaction module is used for acquiring the current carbon transaction price corresponding to the project and calculating the current carbon asset corresponding to the project according to the current carbon transaction price and the carbon emission reduction amount calculated by the data processing module. The carbon management system further comprises: the report generating module is used for generating a report according to the calculation result of the data processing module; and the report verification module is used for verifying the report produced by the report generation module. The data processing module is used for calculating the carbon emission, the datum line and the carbon emission reduction according to the following formulas:
reference line = a · E 2 + L; carbon emission reduction = baseline-carbon emission;
wherein,
q is garbage disposal amount, FC i For each class of refuse the fossil carbon content, M i Is the mass fraction of each kind of refuse component, W i For the water content of each garbage component, i represents different garbage components, a is the power discharge factor, E 1 For outsourcing power, b is a fossil fuel carbon emission factor, P is fossil fuel consumption, E 2 Is the electric power replacement quantity of renewable energy sources, L is the landfill discharge offset quantity, eta is the power generation efficiency,
is based on the internet access rate>
Is a methane correction factor, fy is the methane fraction, GWP CH4 Is the global warming potential of methane, OX is the oxidation coefficient, F is the volume fraction of methane in the landfill gas, DOC f>y MFC for degrading the proportion of organic carbon under the specific conditions of the refuse landfill in the y year y Is a conversion factor for methane, W j，x For the j-th organic matter in the x-th landfill treatmentQuantity of refuse, DOC j In order to degrade the fraction of organic carbon in the solid waste class j, k j Is the decay rate of the garbage type j, wherein j is the garbage type, x is the counting period, and y is the methane emission calculation year.
The prior art is not enough:
1. no method for calculating the carbon dioxide emission of the coal-fired enterprises is provided, the accurate carbon dioxide emission of the coal-fired enterprises cannot be obtained, and accurate guidance cannot be provided for carbon management.
2. Accurate carbon management and early warning cannot be performed, and an energy-saving scheme cannot be timely and accurately provided.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides an enterprise carbon dioxide emission calculation method and a carbon management system, which are used for calculating the monthly average element carbon content C of coal combustion Coal (coal) (ii) a Obtaining annual coal consumption FC Coal (coal) (ii) a Calculating annual slag and fly ash production G Slag And G Ash (ii) a Calculating the average carbon content C of the slag and fly ash Slag And C Ash of (ii) a Obtaining the annual carbonate consumption B of all the desulfurizing agents through the carbonate consumption of various desulfurizing agents; obtaining net purchased electric quantity AD of enterprise Electric power (ii) a The dust removal efficiency Q of the coal combustion process and the emission factor EF of the desulfurizing agent in the desulfurizing process during complete conversion are combined k，t And annual average power supply emission factor EF of regional power grid Electric power Calculating the carbon dioxide emission in the processes of coal combustion, desulfurization and power utilization; the total emission E of carbon dioxide was calculated from the emission of carbon dioxide during the combustion of coal, desulfurization and electricity utilization. The carbon dioxide emission management system of the coal-fired power generation enterprise calculates the total emission E of carbon dioxide, conducts residual carbon quota and carbon asset management according to the carbon emission annual quota and the carbon asset quota, monitors the total emission and energy consumption of the carbon dioxide, conducts early warning when the total emission E of the carbon dioxide exceeds a preset proportion of the carbon emission annual quota, gives an energy-saving scheme, and gives an alarm when the energy consumption exceeds the carbon asset quota. The invention can accurately calculate the carbon dioxide emission of coal-fired power generation enterprises, and can give out sections by early warning of carbon emissionThe scheme can be realized.
The invention provides a carbon dioxide emission calculation method for a coal-fired power generation enterprise, which comprises the following steps:
calculating the monthly average elemental carbon content C of the coal combustion Coal (coal) ；
Obtaining annual coal consumption FC Coal (coal) ；
Calculating annual slag and fly ash production G Slag And G Ash of ；
Calculating the average carbon content C of the slag and fly ash Slag And C Ash of ；
Obtaining the annual carbonate consumption B of all the desulfurizing agents through the carbonate consumption of various desulfurizing agents;
obtaining net purchased electric quantity AD of enterprise Electricity ；
The dust removal efficiency Q of the coal combustion process and the emission factor EF of the desulfurizing process when the desulfurizing agent is completely converted are combined k，t And annual average power supply emission factor EF of regional power grid Electricity Calculating the carbon dioxide emission in the processes of coal combustion, desulfurization and power utilization;
the total emission of carbon dioxide E is calculated from the carbon dioxide emissions during coal combustion, desulfurization and electricity usage.
Preferably, in combination with the dust removal efficiency of the coal burning process, the emission factor of the desulfurizing process when the desulfurizing agent is completely converted and the annual average power supply emission factor of the regional power grid, the total emission E of carbon dioxide is calculated by the emission of carbon dioxide in the coal burning, desulfurizing and power using processes, and is calculated by the following formula:
E＝E coal (coal) +E Desulfurization of +E Electric power ；
Wherein the carbon dioxide E released by the combustion of the coal Coal (coal) The calculation formula is as follows:
E coal (coal) ＝FC Coal (coal) *C Coal (coal) *(1-(G Slag *C Slag +G Ash of *C Ash /Q)/FC Coal (coal) *C Coal (coal) )*44/12；
Carbon dioxide E released in the course of desulfurization Desulfurization of The calculation formula is as follows:
E desulphurisation ＝B*EF k，t ；
Carbon dioxide E released during the use of electricity Electric power The calculation formula is as follows:
E electric power ＝AD Electricity *EF Electric power 。
Preferably, the monthly average elemental carbon content C of the coal combustion is calculated by the following formula Coal (coal) ：
C Coal (coal) ＝(D 1 +D 2 +…+D i +…+Dn)/n
Wherein,
D i the carbon content of the coal shrinkage sample collected in the ith month;
n is the month of the whole year.
Preferably, the annual slag and fly ash production G is calculated by the following formula Slag And G Ash of ：
G Slag ＝L 1 +L 2 +…+L k +…+L n ；
G Ash of ＝F 1 +F 2 +…+F k +…+F n ；
Wherein,
L k slag production for the ith month;
F k fly ash production for month i;
n is the month of the whole year.
Preferably, the average carbon content C of the cinders and fly ash is calculated by the following formula Slag And C Ash of ：
X p The carbon content detection value of the slag of the p-th sample is obtained;
Y p the P-th sample fly ash carbon content detection value is obtained;
m is the number of times.
Preferably, the consumption B of the k-type desulfurizing agent in carbonate all year around is calculated by the following formula k ：
B k ＝B k，1 +B k，2 +…+B k，t +…+B k,n ；
Wherein,
B k，t is a measured value of the consumption of the desulfurizing agent in the t month;
B k，n is a measured value of the consumption of the desulfurizing agent at the nth month;
n is the month of the whole year.
Preferably, the carbonate consumption B is calculated for all desulphurating agents all year round, by the following formula:
B＝(B 1 *I 1 +B 2 *I 2 +…+B k *I k …+B M *I M )*TR；
I k the carbon content of the kth type desulfurizer carbonate;
m is the total number of types of the desulfurizer;
TR is the desulfurization conversion.
The invention provides a carbon dioxide emission management system for coal-fired power generation enterprises, which uses the carbon dioxide emission calculation method for any coal-fired power generation enterprise, and comprises the following steps:
the system comprises a data acquisition module, a database, a carbon emission accounting module, a quota analysis module and a CCER management module;
the data acquisition module acquires the relevant emission of carbon dioxide and transmits the relevant emission to the database;
the carbon emission accounting module calls data of the database to obtain a power supply emission factor EF Electric power And the net purchase electric quantity AD of the enterprise Electric power Dust removal efficiency Q in the coal combustion process and emission factor EF in the desulfurization process when the desulfurizing agent is completely converted k，t And combining the dust removal efficiency Q of the coal combustion process and the emission factor EF of the desulfurizing agent in the desulfurizing process when the desulfurizing agent is completely converted k，t And annual average power supply emission factor EF of regional power grid Electric power Calculating the carbon dioxide emission in the processes of coal combustion, desulfurization and power utilization; calculating the total emission E of carbon dioxide through the emission of carbon dioxide in the processes of coal combustion, desulfurization and power utilization, and recording the result into a database;
the quota analysis module calls data of the database, and calculates the remaining carbon amount according to the total emission E of the carbon dioxide and the annual quota of the carbon emission calculated by the carbon emission accounting module;
and the CCER management module calls the data of the database and calculates the carbon assets to be purchased according to the total emission E of the carbon dioxide and the carbon asset quota calculated by the carbon emission accounting module.
Preferably, the system further comprises a data analysis module, which analyzes and generates a carbon emission chart according to the total emission E of carbon dioxide calculated by the carbon emission accounting module, and generates the energy utilization condition according to the carbon emission chart, the remaining carbon credit and the carbon assets required to be purchased.
Preferably, the system further comprises a data monitoring module, the data monitoring module is used for monitoring the total emission E and the energy utilization condition of the carbon dioxide in real time, when the total emission E of the carbon dioxide exceeds a preset proportion of the carbon emission annual quota, early warning is carried out, an energy-saving scheme is given out, and meanwhile, when the energy utilization condition exceeds the carbon asset quota, an alarm is given.
Preferably, in combination with the dust removal efficiency of the coal burning process, the emission factor of the desulfurizing process when the desulfurizing agent is completely converted and the annual average power supply emission factor of the regional power grid, the total emission E of carbon dioxide is calculated by the emission of carbon dioxide in the coal burning, desulfurizing and power using processes, and is calculated by the following formula:
E＝E coal (coal) +E Desulfurization of +E Electricity ；
Wherein the carbon dioxide E released by the combustion of the coal Coal (coal) The calculation formula is as follows:
E coal (coal) ＝FC Coal (coal) *C Coal (coal) *(1-(G Slag *C Slag +G Ash of *C Ash of /Q)/FC Coal (coal) *C Coal (coal) )*44/12；
Carbon dioxide E released in the course of desulfurization Desulfurization of The calculation formula is as follows:
E desulphurisation ＝B*EF k，t ；
Carbon dioxide E released during the use of electricity Electric power The calculation formula is as follows:
E electric power ＝AD Electricity *EF Electricity 。
Compared with the prior art, the invention has the following beneficial effects:
(1) The invention provides a method for calculating carbon dioxide emission of coal-fired enterprises, which can obtain accurate carbon dioxide emission of the coal-fired enterprises and give accurate guidance to carbon management.
(2) According to the invention, accurate carbon management and early warning are carried out according to the accurate carbon dioxide emission calculation result, and an energy-saving scheme can be timely and accurately provided on the basis of the accurate carbon management and early warning.
Drawings
FIG. 1 is a flow chart of a method for calculating carbon dioxide emissions from a coal-fired power plant according to an embodiment of the present invention;
FIG. 2 is a flow chart of the operation of a carbon dioxide emission management system of a coal-fired power generation enterprise according to an embodiment of the present invention;
FIG. 3 is a flow chart of the operation of a carbon dioxide emission management system of a coal-fired power generation enterprise according to yet another embodiment of the present invention.
Detailed Description
The following detailed description of embodiments of the invention refers to the accompanying drawings.
The invention provides a method for calculating carbon dioxide emission of coal-fired power generation enterprises, which comprises the following steps:
calculating the monthly average elemental carbon content C of coal combustion Coal (coal) ；
Obtaining annual coal consumption FC Coal (coal) ；
Calculating annual slag and fly ash production G Slag And G Ash of ；
Calculating the average carbon content C of the slag and fly ash Slag And C Ash of ；
Obtaining the annual carbonate consumption B of all the desulfurizers through the carbonate consumption of various desulfurizers;
obtaining net purchased electric quantity AD of enterprise Electric power ；
The dust removal efficiency Q of the coal combustion process and the emission factor EF of the desulfurizing agent in the desulfurizing process during complete conversion are combined k，t And regional power grid annual average power supply emission factor EF Electric power Calculating coal-burning, desulfurization and electricity-using processesCarbon dioxide emission;
the total emission E of carbon dioxide was calculated from the emission of carbon dioxide during the combustion of coal, desulfurization and electricity utilization.
According to a specific embodiment of the invention, in combination with the dust removal efficiency of the coal burning process, the emission factor of the desulfurization process when the desulfurization agent is completely converted and the annual average power supply emission factor of the regional power grid, the total emission E of carbon dioxide is calculated by the emission of carbon dioxide in the coal burning, desulfurization and power using processes, and is calculated by the following formula:
E＝E coal (coal) +E Desulfurization of +E Electricity ；
Wherein the carbon dioxide E released by the combustion of the coal Coal (coal) The calculation formula is as follows:
E coal (coal) ＝FC Coal (coal) *C Coal (coal) *(1-(G Slag *C Slag +G Ash of *C Ash of /Q)/FC Coal (coal) *C Coal (coal) )*44/12；
Carbon dioxide E released in the course of desulfurization Desulfurization of The calculation formula is as follows:
E desulfurization of ＝B*EF k，t ；
Carbon dioxide E released during the use of electricity Electricity The calculation formula is as follows:
E electric power ＝AD Electric power *EF Electric power 。
According to one embodiment of the invention, the monthly average elemental carbon content C of the coal combustion is calculated by the following formula Coal (coal) ：
C Coal (coal) ＝(D 1 +D 2 +…+D i +…+Dn)/n
Wherein,
D i the carbon content of the coal shrinkage sample collected in the ith month;
n is the month of the whole year.
According to one embodiment of the present invention, the annual slag and fly ash production G is calculated by the following formula Slag And G Ash of ：
G Slag ＝L 1 +L 2 +…+L k +…+L n ；
G Ash of ＝F 1 +F 2 +…+F k +…+F n ；
Wherein,
L k slag production for the ith month;
F k fly ash production for the ith month;
n is the month of the whole year.
According to a specific embodiment of the present invention, the average carbon content C of the slag and fly ash is calculated by the following formula Slag And C Ash ：
C Slag ＝(X 1 +X 2 +…+X p +…+X m )/m；
C Ash ＝(Y 1 +Y 2 +…+Y p +…+Y m )/m；
X p The carbon content detection value of the slag of the p-th sample is obtained;
Y p the P-th sample fly ash carbon content detection value is obtained;
m is the number of times.
According to an embodiment of the present invention, the carbonate consumption B of the k-type desulfurizing agent is calculated by the following formula k ：
B k ＝B k，1 +B k，2 +…+B k，t +…+B k,n ；
Wherein,
B k，t is a measured value of the consumption of the desulfurizing agent in the t month;
B k，n is a measured value of the consumption of the desulfurizing agent at the nth month;
n is the month of the whole year.
According to one embodiment of the invention, the carbonate consumption B is calculated for all the desulphurating agents all year round, by the following formula:
B＝(B 1 *I 1 +B 2 *I 2 +…+B k *I k …+B M *I M )*TR；
I k is the carbonate content of the kth type desulfurizing agentThe amount of carbon;
m is the total number of types of the desulfurizer;
TR is the desulfurization conversion.
The invention provides a carbon dioxide emission management system for coal-fired power generation enterprises, which uses the carbon dioxide emission calculation method for any coal-fired power generation enterprise, and comprises the following steps:
the system comprises a data acquisition module, a database, a carbon emission accounting module, a quota analysis module and a CCER management module;
the data acquisition module acquires the correlation of carbon dioxide emission and transmits the correlation to the database;
the carbon emission accounting module calls data of the database to obtain a power supply emission factor EF Electric power And the net purchase electric quantity AD of the enterprise Electric power Dust removal efficiency Q in the coal combustion process and emission factor EF in the desulfurization process when the desulfurizing agent is completely converted k，t And combining the dust removal efficiency Q of the coal combustion process and the emission factor EF of the desulfurizing agent in the desulfurizing process when the desulfurizing agent is completely converted k，t And regional power grid annual average power supply emission factor EF Electric power Calculating the carbon dioxide emission in the processes of coal combustion, desulfurization and power utilization; calculating the total emission E of carbon dioxide through the emission of carbon dioxide in the processes of coal combustion, desulfurization and power utilization, and recording the result into a database;
the quota analysis module calls data of the database, and calculates the remaining carbon amount according to the total emission E of the carbon dioxide and the annual quota of the carbon emission calculated by the carbon emission accounting module;
and the CCER management module calls the data of the database and calculates the carbon assets required to be purchased according to the total emission E of the carbon dioxide and the carbon asset quota calculated by the carbon emission accounting module.
According to an embodiment of the invention, the system further comprises a data analysis module, which analyzes and generates a carbon emission chart according to the total emission E of carbon dioxide calculated by the carbon emission accounting module, and generates the energy utilization condition according to the carbon emission chart, the remaining carbon amount and the carbon assets needing to be purchased.
According to a specific embodiment of the invention, the system further comprises a data monitoring module for monitoring the total emission E and the energy utilization condition of the carbon dioxide in real time, and when the total emission E of the carbon dioxide exceeds a preset proportion of the annual quota of carbon emission, the system performs early warning and gives an energy-saving scheme, and meanwhile, when the energy utilization condition exceeds the quota of carbon assets, the system performs alarming.
According to a specific embodiment of the invention, in combination with the dust removal efficiency of the coal burning process, the emission factor of the desulfurization process when the desulfurization agent is completely converted and the annual average power supply emission factor of the regional power grid, the total emission E of carbon dioxide is calculated by the emission of carbon dioxide in the coal burning, desulfurization and power using processes, and is calculated by the following formula:
E＝E coal (coal) +E Desulfurization of +E Electric power ；
Wherein the carbon dioxide E released by the combustion of the coal Coal (coal) The calculation formula is as follows:
E coal (coal) ＝FC Coal (coal) *C Coal (coal) *(1-(G Slag *C Slag +G Ash *C Ash /Q)/FC Coal (coal) *C Coal (coal) )*44/12；
Carbon dioxide E released in the course of desulfurization Desulphurisation The calculation formula is as follows:
E desulfurization of ＝B*EF k，t ；
Carbon dioxide E released during the use of electricity Electric power The calculation formula is as follows:
E electric power ＝AD Electricity *EF Electric power 。
Example 1
The method for calculating the carbon emission of the coal-fired power generation enterprise according to the present invention will be described in detail below, according to an embodiment of the present invention.
The invention provides a carbon dioxide emission calculation method for a coal-fired power generation enterprise, which comprises the following steps:
calculating the monthly average elemental carbon content C of the coal combustion Coal (coal) ；
Obtaining annual coal consumption FC Coal (coal) ；
Calculating annual slag and fly ash production G Slag And G Ash of ；
Calculating slag and fly ashAverage carbon content C Slag And C Ash of ；
Obtaining the annual carbonate consumption B of all the desulfurizing agents through the carbonate consumption of various desulfurizing agents;
obtaining net purchased electric quantity AD of enterprise Electric power ；
The dust removal efficiency Q of the coal combustion process and the emission factor EF of the desulfurizing process when the desulfurizing agent is completely converted are combined k，t And annual average power supply emission factor EF of regional power grid Electric power Calculating the carbon dioxide emission in the processes of coal combustion, desulfurization and power utilization;
the total emission of carbon dioxide E is calculated from the carbon dioxide emissions during coal combustion, desulfurization and electricity usage.
Example 2
The method for calculating carbon emissions of a coal-fired power plant according to the present invention will be described in detail below, according to an embodiment of the present invention.
The invention provides a carbon dioxide emission calculation method for a coal-fired power generation enterprise, which comprises the following steps:
calculating the monthly average elemental carbon content C of coal combustion Coal (coal) ；
Obtaining annual coal consumption FC Coal (coal) ；
Calculating annual slag and fly ash production G Slag And G Ash of ；
Calculating the average carbon content C of the slag and fly ash Slag And C Ash of ；
Obtaining the annual carbonate consumption B of all the desulfurizing agents through the carbonate consumption of various desulfurizing agents;
obtaining net purchased electric quantity AD of enterprise Electric power ；
The dust removal efficiency Q of the coal combustion process and the emission factor EF of the desulfurizing agent in the desulfurizing process during complete conversion are combined k，t And annual average power supply emission factor EF of regional power grid Electricity Calculating the carbon dioxide emission in the processes of coal combustion, desulfurization and power utilization;
the total emission E of carbon dioxide was calculated from the emission of carbon dioxide during the combustion of coal, desulfurization and electricity utilization.
The total emission E of carbon dioxide is calculated by combining the dust removal efficiency Q in the coal burning process, the emission factor of a desulfurizing agent in the complete conversion process and the annual average power supply emission factor of a regional power grid, and the emission E of carbon dioxide in the coal burning, desulfurizing and power using processes, and is calculated by the following formula:
E＝E coal (coal) +E Desulfurization of +E Electric power ；
Wherein the carbon dioxide E released by the combustion of the coal Coal (coal) The calculation formula is as follows:
E coal (coal) ＝FC Coal (coal) *C Coal (coal) *(1-(G Slag *C Slag +G Ash of *C Ash of /Q)/FC Coal (coal) *C Coal (coal) )*44/12；
Carbon dioxide E released in the course of desulfurization Desulphurisation The calculation formula is as follows:
E desulphurisation ＝B*EF k，t ；
Carbon dioxide E released during the use of electricity Electric power The calculation formula is as follows:
E electric power ＝AD Electric power *EF Electric power 。
Example 3
The method for calculating carbon emissions of a coal-fired power plant according to the present invention will be described in detail below, according to an embodiment of the present invention.
The invention provides a carbon dioxide emission calculation method for a coal-fired power generation enterprise, which comprises the following steps:
calculating the monthly average elemental carbon content C of coal combustion Coal (coal) ；
Obtaining annual coal consumption FC Coal (coal) ；
Calculating annual slag and fly ash production G Slag And G Ash of ；
Calculating the average carbon content C of the slag and fly ash Slag And C Ash of ；
Obtaining the annual carbonate consumption B of all the desulfurizing agents through the carbonate consumption of various desulfurizing agents;
obtaining net purchased electric quantity AD of enterprise Electricity ；
The dust removal efficiency Q of the coal combustion process and the emission factor EF of the desulfurizing process when the desulfurizing agent is completely converted are combined k，t And annual average power supply emission factor EF of regional power grid Electric power Calculating the carbon dioxide emission in the coal burning, desulfuration and electricity utilization processes;
the total emission E of carbon dioxide was calculated from the emission of carbon dioxide during the combustion of coal, desulfurization and electricity utilization.
The total emission E of carbon dioxide is calculated by combining the dust removal efficiency Q in the coal burning process, the emission factor of a desulfurizing agent in the complete conversion process and the annual average power supply emission factor of a regional power grid, and the emission E of carbon dioxide in the coal burning, desulfurizing and power using processes, and is calculated by the following formula:
E＝E coal (coal) +E Desulphurisation +E Electric power ；
Wherein the carbon dioxide E released by the combustion of the coal Coal (coal) The calculation formula is as follows:
E coal (coal) ＝FC Coal (coal) *C Coal (coal) *(1-(G Slag *C Slag +G Ash of *C Ash of /Q)/FC Coal (coal) *C Coal (coal) )*44/12；
Carbon dioxide E released in the course of desulfurization Desulfurization of The calculation formula is as follows:
E desulfurization of ＝B*EF k，t ；
Carbon dioxide E released during the use of electricity Electricity The calculation formula is as follows:
E electric power ＝AD Electricity *EF Electric power 。
Wherein the monthly average elemental carbon content C of the coal combustion is calculated by the following formula Coal (coal) ：
C Coal (coal) ＝(D 1 +D 2 +…+D i +…+Dn)/n
Wherein,
D i the carbon content of the coal shrinkage sample collected in the ith month;
n is the month of the whole year.
According to a particular embodiment of the invention, the method is as followsFormula G for annual slag and fly ash production Slag And G Ash of ：
G Slag ＝L 1 +L 2 +…+L k +…+L n ；
G Ash of ＝F 1 +F 2 +…+F k +…+F n ；
Wherein,
L k slag production for the ith month;
F k fly ash production for month i;
n is the month of the whole year.
Wherein the average carbon content C of the slag and fly ash is calculated by the following formula Slag And C Ash of ：
C Slag ＝(X 1 +X 2 +…+X p +…+X m )/m；
C Ash of ＝(Y 1 +Y 2 +…+Y p +…+Y m )/m；
X p The carbon content detection value of the slag of the p-th sample is obtained;
Y p the carbon content of the fly ash of the p-th sample is detected;
m is the number of times.
Wherein the consumption B of the k-type desulfurizer in carbonate all year around is calculated by the following formula k ：
B k ＝B k，1 +B k，2 +…+B k，t +…+B k,n ；
Wherein,
B k，t is a measure of the consumption of the desulphurating agent at month t;
B k，n is a measured value of the consumption of the desulfurizing agent at the nth month;
n is the month of the whole year.
Wherein, the carbonate consumption B of all the desulfurizing agents in the whole year is calculated by the following formula:
B＝(B 1 *I 1 +B 2 *I 2 +…+B k *I k …+B M *I M )*TR；
I k the carbon content of the kth type desulfurizer carbonate;
m is the total number of types of the desulfurizer;
TR is the desulfurization conversion.
Example 4
The carbon dioxide emission management system of the coal-fired power generation enterprise according to the present invention will be described in detail below, according to an embodiment of the present invention.
The invention provides a carbon dioxide emission management system for coal-fired power generation enterprises, which uses the carbon dioxide emission calculation method for any coal-fired power generation enterprise, and comprises the following steps:
the system comprises a data acquisition module, a database, a carbon emission accounting module, a quota analysis module and a CCER management module;
the data acquisition module acquires the relevant emission of carbon dioxide and transmits the relevant emission to the database;
the carbon emission accounting module calls data of the database to obtain a power supply emission factor EF Electricity And the net purchase electric quantity AD of the enterprise Electric power And dust removal efficiency Q of coal combustion process, and emission factor EF of desulfurization process when desulfurizing agent is completely converted k，t And combining the dust removal efficiency Q of the coal combustion process and the emission factor EF of the desulfurizing agent in the desulfurizing process when the desulfurizing agent is completely converted k，t And annual average power supply emission factor EF of regional power grid Electricity Calculating the carbon dioxide emission in the processes of coal combustion, desulfurization and power utilization; calculating the total emission E of carbon dioxide through the emission of carbon dioxide in the processes of coal combustion, desulfurization and power utilization, and recording the result into a database;
the quota analysis module calls data of the database, and calculates the remaining carbon amount according to the total emission E of the carbon dioxide and the annual quota of the carbon emission calculated by the carbon emission accounting module;
and the CCER management module calls the data of the database and calculates the carbon assets to be purchased according to the total emission E of the carbon dioxide and the carbon asset quota calculated by the carbon emission accounting module.
The total emission E of carbon dioxide is calculated by combining the dust removal efficiency Q in the coal burning process, the emission factor of a desulfurizing agent in the complete conversion process and the annual average power supply emission factor of a regional power grid according to the emission of carbon dioxide in the coal burning, desulfurizing and power using processes, and the total emission E of carbon dioxide is calculated by the following formula:
E＝E coal (coal) +E Desulfurization of +E Electric power ；
Wherein the carbon dioxide E released by the combustion of the coal Coal (coal) The calculation formula is as follows:
E coal (coal) ＝FC Coal (coal) *C Coal (coal) *(1-(G Slag *C Slag +G Ash of *C Ash of /Q)/FC Coal (coal) *C Coal (coal) )*44/12；
Carbon dioxide E released in the course of desulfurization Desulfurization of The calculation formula is as follows:
E desulfurization of ＝B*EF k，t ；
Carbon dioxide E released during the use of electricity Electric power The calculation formula is as follows:
E electric power ＝AD Electric power *EF Electric power 。
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention shall fall within the protection scope of the present invention.
Claims (11)
1. A carbon dioxide emission calculation method for a coal-fired power generation enterprise is characterized by comprising the following steps:
calculating the monthly average elemental carbon content C of coal combustion Coal (coal) ；
Obtaining annual coal consumption FC Coal (coal) ；
Calculate annual slag and fly ash yields G Slag And G Ash of ；
Calculating the average carbon content C of the slag and fly ash Slag And C Ash of ；
Obtaining the annual carbonate consumption B of all the desulfurizing agents through the carbonate consumption of various desulfurizing agents;
acquisition rabbetNet purchased electric quantity AD Electric power ；
The dust removal efficiency Q of the coal combustion process and the emission factor EF of the desulfurizing agent in the desulfurizing process during complete conversion are combined k，t And regional power grid annual average power supply emission factor EF Electric power Calculating the carbon dioxide emission in the processes of coal combustion, desulfurization and power utilization;
the total emission E of carbon dioxide was calculated from the emission of carbon dioxide during the combustion of coal, desulfurization and electricity utilization.
2. The method for calculating carbon dioxide emission of a coal-fired power generation enterprise according to claim 1, wherein the total emission E of carbon dioxide is calculated by the emission of carbon dioxide in the processes of coal burning, desulfurization and power use by combining the dust removal efficiency in the process of coal burning, the emission factor of the desulfurization process when a desulfurizing agent is completely converted and the annual average power supply emission factor of a regional power grid, and is calculated by the following formula:
E＝E coal (coal) +E Desulfurization of +E Electricity ；
Wherein the carbon dioxide E released by the combustion of the coal Coal (coal) The calculation formula is as follows:
E coal (coal) ＝FC Coal (coal) *C Coal (coal) *(1-(G Slag *C Slag +G Ash *C Ash /Q)/FC Coal (coal) *C Coal (coal) )*44/12；
Carbon dioxide E released in the course of desulfurization Desulfurization of The calculation formula is as follows:
E desulfurization of ＝B*EF k，t ；
Carbon dioxide E released during the use of electricity Electric power The calculation formula is as follows:
E electric power ＝AD Electric power *EF Electric power 。
3. The method for calculating carbon dioxide emission of a coal-fired power generation enterprise according to claim 1, wherein the monthly average elemental carbon content C of coal combustion is calculated by the following formula Coal (coal) ：
C Coal (coal) ＝(D 1 +D 2 +…+D i +…+Dn)/n
Wherein,
D i the carbon content of the coal shrinkage sample collected in the ith month;
n is the month of the whole year.
4. The method for calculating carbon dioxide emission of a coal-fired power generation enterprise according to claim 1, wherein the annual slag and fly ash production G is calculated by the following formula Slag And G Ash ：
G Slag ＝L 1 +L 2 +…+L k +…+L n ；
G Ash ＝F 1 +F 2 +…+F k +…+F n ；
Wherein,
L k slag production for the ith month;
F k fly ash production for the ith month;
n is the month of the whole year.
5. The method for calculating carbon dioxide emission of coal-fired power generation enterprises according to claim 1, wherein the average carbon content C of the slag and the fly ash is calculated by the following formula Slag And C Ash ：
C Slag ＝(X 1 +X 2 +…+X p +…+X m )/m；
C Ash ＝(Y 1 +Y 2 +…+Y p +…+Y m )/m；
X p The carbon content detection value of the slag of the p-th sample is obtained;
Y p the P-th sample fly ash carbon content detection value is obtained;
m is the number of times.
6. The method for calculating carbon dioxide emission of coal-fired power generation enterprises according to claim 1, wherein the consumption B of the k-type desulfurizing agent in carbonate all the year around is calculated by the following formula k ：
B k ＝B k，1 +B k，2 +…+B k，t +…+B k,n ；
Wherein,
B k，t is a measured value of the consumption of the desulfurizing agent in the t month;
B k，n is a measured value of the consumption of the desulfurizing agent at the nth month,
n is the month of the whole year.
7. The method for calculating carbon dioxide emission of a coal-fired power generation enterprise according to claim 6, wherein the carbonate consumption B of all desulfurizing agents throughout the year is calculated by the following formula:
B＝(B 1 *I 1 +B 2 *I 2 +…+B k *I k …+B M *I M )*TR；
I k the carbon content of the kth type desulfurizer carbonate;
m is the total number of types of the desulfurizer;
TR is the desulfurization conversion.
8. A carbon dioxide emission management system for a coal-fired power generation enterprise, which is characterized in that the carbon dioxide emission calculation method for the coal-fired power generation enterprise according to any one of claims 1 to 7 is used, and comprises the following steps:
the system comprises a data acquisition module, a database, a carbon emission accounting module, a quota analysis module and a CCER management module;
the data acquisition module acquires the relevant emission of carbon dioxide and transmits the relevant emission to the database;
the carbon emission accounting module calls data of the database to obtain a power supply emission factor EF Electric power And the net purchase electric quantity AD of the enterprise Electric power Dust removal efficiency Q in the coal combustion process and emission factor EF in the desulfurization process when the desulfurizing agent is completely converted k，t And combining the dust removal efficiency Q of the coal combustion process and the emission factor EF of the desulfurizing agent in the desulfurizing process when the desulfurizing agent is completely converted k，t And annual average power supply emission factor EF of regional power grid Electricity Calculating the carbon dioxide emission in the processes of coal combustion, desulfurization and power utilization; by burning coal, desulphurizing and using electricityCalculating the total emission E of carbon dioxide according to the emission of the carbon oxide, and recording the result into a database;
the quota analysis module calls data of the database, and calculates the remaining carbon amount according to the total emission E of the carbon dioxide and the annual quota of the carbon emission calculated by the carbon emission accounting module;
and the CCER management module calls the data of the database and calculates the carbon assets required to be purchased according to the total emission E of the carbon dioxide and the carbon asset quota calculated by the carbon emission accounting module.
9. The carbon dioxide emission management system for a coal-fired power generation enterprise according to claim 8, further comprising a data analysis module for analyzing and generating a carbon emission chart according to the total emission E of carbon dioxide calculated by the carbon emission accounting module, and generating an energy use situation according to the carbon emission chart, the remaining carbon amount and the carbon assets to be purchased.
10. The carbon dioxide emission management system for the coal-fired power generation enterprise according to claim 9, further comprising a data monitoring module for monitoring the total emission E and the energy consumption of carbon dioxide in real time, wherein when the total emission E of carbon dioxide exceeds a preset proportion of the annual carbon emission quota, an early warning is given, an energy-saving scheme is given, and meanwhile, when the energy consumption exceeds the carbon asset quota, an alarm is given.
11. The carbon dioxide emission management system for coal-fired power generation enterprises according to any one of claims 8 to 10, wherein the total emission E of carbon dioxide is calculated from the emission of carbon dioxide in the processes of coal burning, desulfurization and use of electricity, in combination with the dust removal efficiency of the coal burning process, the emission factor of the desulfurization process when the desulfurization agent is completely converted and the annual average power supply emission factor of the regional power grid, by the following formula:
E＝E coal (coal) +E Desulfurization of +E Electric power ；
Wherein the carbon dioxide E released by the combustion of the coal Coal (coal) The calculation formula is as follows:
E coal (coal) ＝FC Coal (coal) *C Coal (coal) *(1-(G Slag *C Slag +G Ash of *C Ash of /Q)/FC Coal (coal) *C Coal (coal) )*44/12；
Carbon dioxide E released in the course of desulfurization Desulphurisation The calculation formula is as follows:
E desulfurization of ＝B*EF k，t ；
Carbon dioxide E released during the use of electricity Electricity The calculation formula is as follows:
E electricity ＝AD Electricity *EF Electricity 。
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| CN118069978A (en) * | 2024-04-22 | 2024-05-24 | 江西江投能源技术研究有限公司 | Method and system for calculating carbon dioxide emission amount of coal-fired power plant |
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| CN118069978A (en) * | 2024-04-22 | 2024-05-24 | 江西江投能源技术研究有限公司 | Method and system for calculating carbon dioxide emission amount of coal-fired power plant |
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