CN116050934B - Product carbon footprint accounting method of industrial boiler - Google Patents

Product carbon footprint accounting method of industrial boiler Download PDF

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CN116050934B
CN116050934B CN202310142962.XA CN202310142962A CN116050934B CN 116050934 B CN116050934 B CN 116050934B CN 202310142962 A CN202310142962 A CN 202310142962A CN 116050934 B CN116050934 B CN 116050934B
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笪耀东
侯娜娜
齐国利
于吉明
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China Special Equipment Inspection and Research Institute
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Abstract

The invention discloses a product carbon footprint accounting method of an industrial boiler, which comprises the following steps: determining system boundaries, functional units and trade-off criteria of the carbon footprint in the life cycle of the boiler product; dividing the carbon footprint within the system boundary into a raw material acquisition stage, a production stage, a use stage, and a disposal recovery stage; determining a greenhouse gas emission list of each stage; collecting and determining emission factors in each stage; constructing a carbon emission accounting model; and obtaining the carbon footprint of the industrial boiler product by using the carbon emission accounting model of each stage. The invention carries out deep analysis on the life cycle carbon emission source and the carbon emission condition of the boiler system, establishes the carbon footprint metering model of the industrial boiler product, realizes the accounting of the carbon footprint of the industrial boiler product, and has practical significance and practical value for the accurate accounting of the carbon footprint of the product of the boiler production and use enterprises.

Description

Product carbon footprint accounting method of industrial boiler
Technical Field
The invention belongs to the technical field of carbon emission, and particularly relates to a product carbon footprint accounting method of an industrial boiler.
Background
The life cycle of the boiler consumes a large amount of energy resources such as metal materials, coal, oil, natural gas, electric power and the like, and causes a large amount of greenhouse gas emission. By carrying out carbon footprint accounting of the boiler, enterprises can be helped to know the carbon emission and the duty ratio of the carbon emission in each stage of a product supply chain, production, use and the like, so that an effective carbon emission reduction scheme can be formulated; in the process of making the scheme, according to the analysis result of the carbon footprint, the influence of the emission reduction measures to be adopted on the current greenhouse gas emission condition can be predicted, so that the preference and improvement of different emission reduction measures are realized, and the resource energy consumption and the full-chain carbon emission are reduced.
The existing carbon footprint accounting method still has no unified framework, lacks a standardized life cycle inventory analysis method, comprises determining a system boundary, a data selection standard, an analysis processing method and a standardized inventory model, and lacks an effective standardized database; when converting the inventory analysis results into environmental impact indicators, standard modeling methods are lacking.
Therefore, no report on the aspect of industrial boiler carbon footprint exists at present, an industrial boiler carbon footprint quantification method is urgently needed to be established, key links of greenhouse gas emission at different stages of a boiler life cycle are identified, and a standardized quantification and evaluation method is provided for industries, so that resource energy consumption and full-chain carbon emission are reduced.
Disclosure of Invention
Aiming at the problems, the invention aims to provide a product carbon footprint accounting method of an industrial boiler, which combines the production practice of industrial boiler enterprises, carries out in-depth analysis and discussion on the life cycle carbon emission source and the carbon emission condition of the industrial boiler, establishes a product carbon footprint metering model of the industrial boiler, realizes the carbon footprint accounting of the product of the industrial boiler, and has practical significance and practical value for the accurate accounting of the product carbon footprint of the industrial boiler enterprises.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows: a method of product carbon footprint accounting for an industrial boiler, the method comprising:
a. determining system boundaries, functional units and trade-off criteria of the carbon footprint in the life cycle of the industrial boiler product;
the system boundary comprises a boundary 1 and a boundary 2, wherein the boundary 1 comprises a raw material acquisition stage and a production stage, and the carbon footprint of the boundary 1 is calculated according to a formula (1):
E 1 =(E m +E p )×10 -3 /Q (1)
wherein:
E 1 carbon footprint of boiler lifecycle System boundary 1, in tCO 2e /GJ;
E m Greenhouse gas emission in kgCO at the raw material acquisition stage of boiler 2e
E P Greenhouse gas emission in kgCO in boiler production stage 2e
Q-total heat converted by hot water, steam or organic heat carrier generated in the life cycle of the boiler, wherein the unit is GJ;
the boundary 2 includes all phases of the lifecycle, and the boundary 2 carbon footprint is calculated according to equation (2):
E 2 =(E m +E p +E u +E r )×10 -3 /Q (2)
wherein:
E 2 carbon footprint of boiler lifecycle System boundary 2 in tCO 2e /GJ;
E u The boiler is used for obtaining the greenhouse gas emission in kgCO 2e
E r Greenhouse gas emissions in the boiler disposal recovery stage, in kgCO 2e
The data selection principle is as follows: if the estimated emissions of a material or energy source in each stage is less than or equal to 1% of the estimated carbon emissions of that stage, then deletions may be made and the estimated greenhouse gas emissions of all of the deleted items should not add up to more than 5% of the estimated carbon emissions of that stage.
b. Dividing the carbon footprint into a raw material acquisition stage, a production stage, a use stage and a disposal recovery stage within the system boundary;
the raw material acquisition stage comprises a resource acquisition and material production stage;
a production stage comprising a production and manufacturing stage of the boiler body and auxiliary equipment;
the using stage comprises the links of fuel production and use of the boiler body equipment and the links of power production and use of auxiliary equipment;
the disposal and recovery stage comprises a disposal link after the boiler is scrapped.
c. Determining a carbon emission list of each stage according to the production process of industrial boiler products, wherein the carbon emission list comprises raw and auxiliary material consumption, energy consumption, heat supply quantity, recovery rate and the like; analyzing a carbon emission list in the life cycle of an industrial boiler product, and determining an input list and an output list of each stage;
d. respectively determining a calculation method, an allocation program, data requirements and emission factors in each stage;
the greenhouse gas emission in the raw material acquisition stage is calculated according to the formula (3):
wherein: AD (analog to digital) converter m,i -the mass of i-th raw material consumed, free of recycled raw material mass, in kilograms (kg);
EF m,i the emission factor corresponding to the i-th raw material consumed, in kg carbon dioxide equivalent per kg (kgCO 2 e/kg);
i-raw material type.
Various energy sources consumed by the boiler in the production stage comprise corresponding energy source production and greenhouse gas emission generated in the energy source use process. And in the welding process of carbon dioxide shielded welding, the emission of carbon dioxide shielding gas directly dissipated into the air is calculated according to a formula (4) in the production stage of greenhouse gas emission:
E p =E e +E t (4)
wherein: e (E) e Energy consumption greenhouse gas emissions in kilograms of carbon dioxide equivalent (kgCO) 2e );
E t Welding shielding gas carbon dioxide escape emissions in kilograms of carbon dioxide equivalent (kgCO 2e );
In the production phase, the energy consumption greenhouse gas emission is calculated according to formula (5):
wherein: AD (analog to digital) converter x The net consumption of the xth energy source (including fuel, electricity, heat) in kilograms (kg), ten thousand cubic meters (ten thousand meters) 3 ) Megawatt hours (MWh), ji Jiao (GJ), etc., determined according to the specific energy variety;
EF x -the carbon emission factor corresponding to the x-th energy production process in kg carbon dioxide equivalent per kg (kgCO 2 e/kg), kilogram carbon dioxide equivalent/ten thousand cubic meters (kgCO) 2 e/ten thousand m 3 ) Kg carbon dioxide equivalent/megawatt hour (kgCO) 2 e/MWh), kilogram carbon dioxide equivalent/Ji Jiao (kgCO) 2 e/GJ), etc., determined according to the specific energy variety;
EF x the carbon emission factor in kg carbon dioxide equivalent per kg (kgCO) for the' -x-th energy source 2 e/kg), kilogram carbon dioxide equivalent/ten thousand cubic meters (kgCO) 2 e/ten thousand m 3 ) And the like, according to the specific energy variety;
x-energy source type.
The emission factor of energy use is calculated according to the formula (6):
EF x ′=NCV x ×CC x ×OF x ×44/12 (6)
wherein: NCV (NCV) x The lower heating value of the xth energy source is shown as giga-joule/ton (GJ/t) or mega-joule/ten thousand cubic meters (MJ/ten thousand meters) 3 );
CC x -carbon content per unit heating value of the x-th energy source, in tons of carbon per Ji Jiao (tC/GJ);
OF x -the carbon oxidation rate of the x-th energy source in%.
The carbon dioxide escape emission of the welding shielding gas is calculated according to the formula (7):
wherein:
P k CO in the kth shielding gas 2 The volume percentage of (2) is expressed in units of;
W k -the net amount of protective gas used in kilograms (kg);
P j the volume percentage of the j-th gas in the mixed protective gas is expressed as a unit;
M j -the molar mass of the j-th gas in the mixed shielding gas in grams per mole (g/mol);
k-type of shielding gas;
j-gas species in the mixed shielding gas.
The boiler is mainly used for producing fuel, using and discharging electricity in the using stage, and the greenhouse gas discharging in the using stage is calculated according to a formula (8):
E u =Q×EF q (8)
wherein: e (E) u The boiler uses the greenhouse gas emissions of the capture stage in kilograms of carbon dioxide equivalent (kgCO 2e );
Q-the heat generation of the boiler life cycle in units of too much coke (TJ);
EF q carbon emission factor per unit of heat generation in kilograms of carbon dioxide equivalent per tera-coke (kgCO) 2e /TJ)。
For a hot water or organic heat carrier boiler, the total heat generated by the hot water or organic heat carrier is calculated according to equation (9):
Q=β·G(h cs -h js )·10 -6 ·hr·d·m·yr (9)
the average operating load rate of the beta-boiler is generally 70%;
g-boiler medium circulation in kilograms per hour (kg/h);
h cs -boiler outlet medium enthalpy in kilojoules per kilogram (kJ/kg);
h js enthalpy of inlet medium of boiler, singleThe position is kilojoules per kilogram (kJ/kg);
hr-boiler operating hours in hours (h);
d-boiler operation days in days (d);
yr-number of years of boiler operation in years (a);
the greenhouse gas emission in the treatment recovery acquisition stage is calculated according to the formula (10):
wherein:
AD r,n -disposing of the mass of recovered nth material in kilograms (kg);
EF r,n -disposing of the emission factor corresponding to the recovered nth material in kg carbon dioxide equivalent per kg (kgCO 2 e/kg);
n-disposal of recovered material species.
e. Uncertainty and sensitivity analysis was performed to analyze emissions duty cycle and data quality.
f. And constructing a carbon emission accounting model by using an emission factor method, and obtaining the carbon footprint of the industrial boiler product by using the carbon emission accounting model of each stage.
Preferably, in performing the product lifecycle carbon footprint evaluation, site specific data, such as direct greenhouse gas emissions, activity data, or emission factors, are also collected.
Preferably, when collecting site-specific data is not feasible, the non-site-specific data should be used and the primary data for third party review has been received.
The beneficial effects of the invention are as follows:
1. the invention provides a product carbon footprint accounting method of an industrial boiler, which can solve the problem that the prior art does not have the product carbon footprint accounting method of the industrial boiler.
2. The provided carbon footprint calculation method provides a standardized life cycle list analysis method, and has practical significance and practical value for correctly calculating the carbon footprint of the product of an industrial boiler manufacturing enterprise.
3. When the carbon footprint calculation method provided by the invention is used, the carbon emission of the life cycle of the process of raw material acquisition, production stage, use stage, disposal recovery and the like of the industrial boiler product is considered, and the inventory analysis is carried out on each stage of the life cycle of the industrial boiler product, including data collection, distribution and trade-off, energy consumption link analysis, emission intensity measurement and calculation, emission factor collection and the like, so that the carbon footprint calculation method of the industrial boiler product is established.
4. When the carbon footprint calculation method provided by the invention is used, the key point of greenhouse gas emission in the life cycle of the product can be found, and the carbon emission of the industrial boiler product can be reduced as much as possible.
Drawings
FIG. 1 is a block diagram of the steps of a product carbon footprint accounting method of an industrial boiler of the present invention.
FIG. 2 is a schematic diagram of the boundary of the industrial boiler product system of the present invention.
Detailed Description
In order to enable those skilled in the art to better understand the technical solution of the present invention, the technical solution of the present invention is further described below with reference to the accompanying drawings and examples.
The industrial boiler product system comprises a boiler body, a water supply pump (circulating pump), a water supplementing pump, a water treatment system, a blower, a draught fan, a recirculation blower, a return blower, a raw coal crushing system, a powder preparation system, a coal conveying system, an ash and slag removing system and the like.
1-2, a product carbon footprint accounting method of an industrial boiler, the carbon footprint accounting method comprising:
a. determining system boundaries, functional units and trade-off criteria of a carbon footprint within a lifecycle of an industrial boiler product, specifically, a full lifecycle of the carbon product comprising: raw material acquisition, production and manufacturing sections of a boiler body and auxiliary machines and boiler use;
since the data in the disposal recovery stage is not available, the system boundary of the carbon footprint is temporarily not counted into the boundary, and the raw material is obtained until the boiler is used.
The functional units are how much heat is provided in the life cycle of an industrial boiler product system, the service life of the life cycle and the number of annual operation hours.
The trade-off criteria is that in each stage, a pruning may be performed if the estimated emissions of a material or energy source is less than or equal to 1% of the estimated emissions of carbon in that stage. But all the greenhouse gas emissions estimates of the truncated projects add up to no more than 5% of the carbon emissions estimates of the stage.
b. Dividing the carbon footprint into a raw material acquisition stage, a production stage, a use stage and a disposal recovery stage within the system boundary;
the system boundary is divided into a boundary 1 and a boundary 2, wherein the boundary 1 is the discharge from a cradle to a gate and comprises a raw material acquisition stage and a production stage;
boundary 2 is from "cradle" to "tomb", including all phases of the lifecycle, namely raw material acquisition phase, production phase, use phase, disposal recovery phase.
The carbon footprint of system boundary 1 is calculated according to equation (1):
E 1 =(E m +E p )×10 -3 /Q (1)
wherein:
E 1 carbon footprint of boiler lifecycle System boundary 1 in tons of carbon dioxide equivalent per giga-joule (tCO) 2e /GJ);
E m Greenhouse gas emissions in kg carbon dioxide equivalent (kgCO) in the raw material boiler acquisition stage 2e );
E P Greenhouse gas emissions in kg carbon dioxide equivalent (kgCO) during the production phase of the boiler 2e );
Q-the total heat converted by hot water, steam or organic heat carriers generated during the life cycle of the boiler in Gigajoules (GJ);
system boundary 2 carbon footprint is calculated according to equation (2):
E 2 =(E m +E p +E u +E r )×10 -3 /Q (2)
wherein:
E 2 carbon footprint of boiler lifecycle System boundary 2 in tons of carbon dioxide equivalent per giga-joule (tCO) 2e /GJ);
E u The boiler uses the greenhouse gas emissions of the capture stage in kilograms of carbon dioxide equivalent (kgCO 2e );
E r Greenhouse gas emissions in kg carbon dioxide equivalent (kgCO) in boiler disposal recovery stage 2e )。
The raw material acquisition stage comprises a resource acquisition stage and a material production stage, wherein the resource acquisition stage comprises resource exploitation, processing purification and production manufacturing processes, and the whole process is a system boundary of material production and does not comprise a using and discarding link;
the production stage comprises a boiler body production and manufacturing stage, and specifically comprises links such as material cutting, material forming, casting, expansion joint, welding, heat treatment, inspection, test and the like, and also comprises a production and manufacturing stage of auxiliary equipment, wherein the production and manufacturing stage comprises lofting, blanking, forming, assembling, painting, debugging and the like;
the using stage comprises the links of fuel production and fuel use of the boiler body equipment, and the links of power production and power use of auxiliary equipment, and the greenhouse gas emission ratio caused by boiler maintenance and the like is extremely low, and the boiler is not included in the boundary.
The disposal and recovery stage comprises the links of disassembly, transportation, disposal, recovery and the like after the boiler is scrapped.
c. Determining carbon emission sources (lists) of each stage according to the production process of industrial boiler products, including raw material consumption, energy consumption, heat supply quantity, recovery rate and the like, analyzing the carbon emission list of the industrial boiler products in the life cycle, and determining input and output lists of each stage;
d. respectively determining a calculation method, an allocation program, data requirements and emission factors in each stage;
the boiler is in raw material acquisition stage, various raw materials consumed, such as iron plate, steel tube, forge piece, etc., correspond to the discharge of raw material production life cycle from 'cradle' to 'gate', namely raw material acquisition stage and production stage;
the greenhouse gas emission in the raw material acquisition stage is calculated according to the formula (3):
wherein: AD (analog to digital) converter m,i -the mass of i-th raw material consumed, free of recycled raw material mass, in kilograms (kg);
EF m,i the emission factor corresponding to the i-th raw material consumed, in kg carbon dioxide equivalent per kg (kgCO 2 e/kg);
i-raw material type.
Various energy sources consumed by the boiler in the production stage comprise corresponding energy source production and greenhouse gas emission generated in the energy source use process. And in the welding process of carbon dioxide shielded welding, the emission of carbon dioxide shielding gas directly dissipated into the air is calculated according to a formula (4) in the production stage of greenhouse gas emission:
E p =E e +E t (4)
wherein: e (E) e Energy consumption greenhouse gas emissions in kilograms of carbon dioxide equivalent (kgCO) 2e );
E t Welding shielding gas carbon dioxide escape emissions in kilograms of carbon dioxide equivalent (kgCO 2e );
In the production phase, the energy consumption greenhouse gas emission is calculated according to formula (5):
wherein: AD (analog to digital) converter x The net consumption of the xth energy source (including fuel, electricity, heat) in kilograms (kg), ten thousand cubic meters (ten thousand meters) 3 ) Megawatt-hour (MWh), ji Jiao (GJ), etc., according to the toolDetermining energy varieties;
EF x -the carbon emission factor corresponding to the x-th energy production process in kg carbon dioxide equivalent per kg (kgCO 2 e/kg), kilogram carbon dioxide equivalent/ten thousand cubic meters (kgCO) 2 e/ten thousand m 3 ) Kg carbon dioxide equivalent/megawatt hour (kgCO) 2 e/MWh), kilogram carbon dioxide equivalent/Ji Jiao (kgCO) 2 e/GJ), etc., determined according to the specific energy variety;
EF x the carbon emission factor in kg carbon dioxide equivalent per kg (kgCO) for the' -x-th energy source 2 e/kg), kilogram carbon dioxide equivalent/ten thousand cubic meters (kgCO) 2 e/ten thousand m 3 ) And the like, according to the specific energy variety;
x-energy source type.
The emission factor of energy use is calculated according to the formula (6):
EF x ′=NCV x ×CC x ×OF x ×44/12 (6)
wherein: NCV (NCV) x The lower heating value of the xth energy source is shown as giga-joule/ton (GJ/t) or mega-joule/ten thousand cubic meters (MJ/ten thousand meters) 3 );
CC x -carbon content per unit heating value of the x-th energy source, in tons of carbon per Ji Jiao (tC/GJ);
OF x -the carbon oxidation rate of the x-th energy source in%.
The carbon dioxide escape emission of the welding shielding gas is calculated according to the formula (7):
wherein:
P k CO in the kth shielding gas 2 The volume percentage of (2) is expressed in units of;
W k -the net amount of protective gas used in kilograms (kg);
P j the volume percentage of the j-th gas in the mixed protective gas is expressed as a unit;
M j -the molar mass of the j-th gas in the mixed shielding gas in grams per mole (g/mol);
k-type of shielding gas;
j-gas species in the mixed shielding gas.
The boiler is mainly used for producing fuel, using and discharging electricity in the using stage, and the greenhouse gas discharging in the using stage is calculated according to a formula (8):
E u =Q×EF q (8)
wherein: e (E) u The boiler uses the greenhouse gas emissions of the capture stage in kilograms of carbon dioxide equivalent (kgCO 2e );
Q-the heat generation of the boiler life cycle in units of too much coke (TJ);
EF q carbon emission factor per unit of heat generation in kilograms of carbon dioxide equivalent per tera-coke (kgCO) 2e /TJ)。
For a hot water or organic heat carrier boiler, the total heat generated by the hot water or organic heat carrier is calculated according to equation (9):
Q=β·G(h cs -h js )·10 -6 ·hr·d·m·yr (9)
the average operating load rate of the beta-boiler is generally 70%;
g-boiler medium circulation in kilograms per hour (kg/h);
h cs -boiler outlet medium enthalpy in kilojoules per kilogram (kJ/kg);
h js -enthalpy of inlet medium of the boiler in kilojoules per kilogram (kJ/kg);
hr-boiler operating hours in hours (h);
d-boiler operation days in days (d);
yr-number of years of boiler operation in years (a);
the greenhouse gas emission in the treatment recovery acquisition stage is calculated according to the formula (10):
wherein:
AD r,n -disposing of the mass of recovered nth material in kilograms (kg);
EF r,n -disposing of the emission factor corresponding to the recovered nth material in kg carbon dioxide equivalent per kg (kgCO 2 e/kg);
n-disposal of recovered material species.
e. Uncertainty and sensitivity analysis was performed to analyze emissions duty cycle and data quality.
f. And constructing a carbon emission accounting model by using an emission factor method, and obtaining the carbon footprint of the industrial boiler product by using the carbon emission accounting model of each stage.
Examples
Taking a gas boiler of a boiler manufacturing plant (the design fuel of the boiler is natural gas, the rated evaporation capacity is 35t/h, the outlet medium is superheated steam, the rated outlet pressure is 1.25Mpa, the rated outlet temperature is 300 ℃), the accounting period of carbon emission is set to be one year, and the measurement unit of the carbon footprint of a boiler product is as follows: kgCO 2 e/GJ, namely: boiler product emissions carbon dioxide equivalent for 1GJ heat production.
Specifically, the raw material obtaining stage mainly comprises a steel plate, a steel pipe, a cast steel piece, a fastener, a bracing piece, a section bar, a welding wire and the like, and the carbon emission of the raw material obtaining stage is calculated according to a formula (3) to be 141.84tCO 2e
The production stage mainly comprises the use of electric power and the use of carbon dioxide shielding gas, and according to the formula (5), the carbon emission of the raw material acquisition stage can be calculated, and the carbon emission is 17.27tCO for the use stage mainly of electric power and welding shielding gas 2e Wherein the emissions of natural gas include emissions of natural gas production and use. The emissions of natural gas production can be calculated according to formula (3), and the use emissions of natural gas can be calculated as follows:
firstly, according to an energy efficiency test report of a boiler, calculating the carbon emission intensity of the boiler, and assuming that the operation of the boiler is negativeThe load is 70%, the annual operation time is 2000 hours, the operation time is 20 years, the heat supply of the boiler is calculated according to a formula (9) based on a boiler energy efficiency test report, the heat supply of the boiler life cycle is 5740701.345GJ, the carbon emission intensity is calculated, and the carbon emission 354537.42tCO of the boiler life cycle is calculated according to the carbon emission intensity 2e
In preferred embodiments of the invention, the data also includes site-specific data collection such as direct greenhouse gas emissions (determined by direct measurement, stoichiometry, mass balance, or the like), activity data (input and output of the process that results in greenhouse gas emissions or scavenging), or emissions factors. When collecting site-specific data is not feasible, the main data that is not site-specific data and has received third party review should be used. Product carbon footprint data uses data that minimizes bias or uncertainty, using the best quality data available.
In the preferred embodiment of the invention, raw material activity level data in the raw material acquisition stage adopts measured data, and raw material emission factors adopt foreign databases (ecoinunts) and the like; the activity level data of the electric power and the carbon dioxide protective gas in the production process are reasonably distributed by boiler manufacturers according to actual monitoring data, and the emission factor of the electric power is calculated to be the latest electric power emission factor 0.5810tCO issued by the 2022 ecological environment department for the climate change department 2 MWh; the carbon emission intensity in the using process is an actual measurement value, the fuel consumption and the power consumption are calculated values, the emission factor of natural gas is an actual measurement value, the emission factor of natural gas production is from a foreign database (Ecoinvent), and the emission factor of power production adopts the latest power emission factor 0.5810tCO issued by the 2022 ecological environment department in response to climate change department 2 /MWh。
To sum up, the total carbon emission of the boiler life cycle in the examples is 354697tCO 2e The heat supply in the life cycle is 5740701.345GJ, and the carbon footprint is 61.79kgCO 2 GJ. Wherein the discharge ratio of the raw material obtaining stage is 0.04%, the production stage is 0.0049%, and the use stage is 99.95%.
The activity data value which is larger than the carbon footprint proportion of the boiler product is reduced by 10%, and the influence on the whole carbon footprint is examined. Sensitivity row name is: natural gas > power > raw materials, indicating that the change in consumption of natural gas has the greatest effect on the change in total carbon footprint of the boiler product.
Based on the identification result of main data of the carbon footprint of the boiler product, the main data are respectively subjected to DQI matrix determination and Monte-Carlo simulation, and the overall uncertainty of the carbon footprint is 6.90%.
The principle of the invention is as follows: according to the invention, the life cycle of the industrial boiler is divided into stages, the greenhouse gas emission list of each stage is determined, emission factors in each stage are collected and determined, a carbon emission accounting model is constructed, the carbon footprint of an industrial boiler product is obtained by utilizing the carbon emission accounting model of each stage, the life cycle carbon emission source of the boiler system and the carbon emission condition thereof are deeply analyzed, an industrial boiler product carbon footprint metering model is established, the carbon footprint accounting of the industrial boiler product is realized, and the method has practical significance and practical value for accurately accounting the carbon footprint of the product in boiler production and use enterprises.
The foregoing has shown and described the basic principles, principal features and advantages of the invention. The present invention is subject to various changes and modifications without departing from the spirit and scope thereof, and such changes and modifications fall within the scope of the invention as hereinafter claimed.

Claims (3)

1. A method of product carbon footprint accounting for an industrial boiler, the method comprising:
a. determining system boundaries, functional units and trade-off criteria of the carbon footprint in the life cycle of the industrial boiler product;
b. dividing the carbon footprint into a raw material acquisition stage, a production stage, a use stage and a disposal recovery stage within the system boundary;
c. determining carbon emission lists of each stage according to the production process of the industrial boiler product, analyzing the carbon emission list of the industrial boiler product in the life cycle, and determining input and output lists of each stage;
d. respectively determining a calculation method, an allocation program, data requirements and emission factors in each stage;
e. performing uncertainty and sensitivity analysis, analyzing emission duty ratio and data quality, and determining the overall uncertainty of the carbon footprint through DQI matrix and Monte-Carlo simulation iteration;
f. constructing a carbon emission accounting model by using an emission factor method, and obtaining the carbon footprint of an industrial boiler product by using the carbon emission accounting model of each stage;
wherein the system boundary comprises a boundary 1 and a boundary 2, wherein the boundary 1 comprises a raw material acquisition stage and a production stage; the boundary 2 includes all phases of the lifecycle;
the carbon footprint of the system boundary 1 is calculated according to formula (1):
(1)
wherein:
E 1 carbon footprint of boiler lifecycle System boundary 1, in tCO 2e /GJ;
E m Greenhouse gas emission in kgCO at the raw material acquisition stage of boiler 2e
E P Greenhouse gas emission in kgCO in boiler production stage 2e
Q-total heat converted by hot water, steam or organic heat carrier generated in the life cycle of the boiler, wherein the unit is GJ;
system boundary 2 carbon footprint is calculated according to equation (2):
(2)
wherein:
E 2 carbon footprint of boiler lifecycle System boundary 2 in tCO 2e /GJ;
E u The boiler is used for obtaining the greenhouse gas emission in kgCO 2e
E r Greenhouse gas emissions in the boiler disposal recovery stage, in kgCO 2e
The functional units are the quantity of heat provided in the life cycle of an industrial boiler product system, the service life of the life cycle and the number of annual operation hours;
the data selection principle is as follows: if the estimated value of the carbon emission of a material or energy source is less than or equal to 1% of the estimated value of the carbon emission of the stage, the greenhouse gas emission of all the deleted projects can be deleted, and the estimated value of the greenhouse gas emission of all the deleted projects cannot be added up to more than 5% of the estimated value of the carbon emission of the stage;
the raw material acquisition stage comprises a resource acquisition and material production stage;
a production stage comprising a production and manufacturing stage of the boiler body and auxiliary equipment;
the using stage comprises the links of fuel production and use of the boiler body equipment and the links of power production and use of auxiliary equipment;
the disposal and recovery stage comprises a disposal link after the boiler is scrapped;
the greenhouse gas emission in the raw material acquisition stage is calculated according to the formula (3):
(3)
wherein: AD (analog to digital) converter m,i The mass of the i-th raw material is consumed, and the mass of the recycled raw material is not contained, wherein the unit is kilogram (kg);
EF m,i the emission factor for the i-th raw material consumed is expressed in kg carbon dioxide equivalent per kg (kgCO 2 e/kg); i is the raw material category, and the raw material category comprises a steel plate, a steel pipe, a cast steel piece, a fastener, a bracing piece, a section bar and a welding wire;
the greenhouse gas emissions at the production stage are calculated according to the formula (4):
(4)
wherein: e (E) e Greenhouse gas emissions in kilograms of carbon dioxide equivalent (kgCO) for energy consumption 2e );E t For welding shielding gas carbon dioxide escape emissions in kilograms of carbon dioxide equivalent (kgCO 2e );
In the production stage, the energy consumption greenhouse gas emission is calculated according to the formula (5):
(5)
wherein: AD (analog to digital) converter x The unit of the net consumption of the energy is kilogram (kg), ten thousand cubic meters (ten thousand meters) 3 ) Any one of megawatt-hours (MWh), ji Jiao (GJ); EF (electric F) x For the carbon emission factor corresponding to the x-th energy production process, the unit is kilogram carbon dioxide equivalent/kilogram (kgCO 2 e/kg), kilogram carbon dioxide equivalent/ten thousand cubic meters (kgCO) 2 e/ten thousand m 3 ) Kg carbon dioxide equivalent/megawatt hour (kgCO) 2 e/MWh), kilogram carbon dioxide equivalent/Ji Jiao (kgCO) 2 e/GJ);the carbon emission factor used for the xth energy source is expressed in kilograms of carbon dioxide equivalents per kilogram (kgCO 2 e/kg), kilogram carbon dioxide equivalent/ten thousand cubic meters (kgCO) 2 e/ten thousand m 3 ) Any one of them; x is the energy source type, and the energy sources comprise fuel, electric power and heating power;
the emission factor of energy use is calculated according to the formula (6):
(6)
wherein: NCV (NCV) x The unit of the low-position heating value of the xth energy is giga-joule/ton (GJ/t) or megajoule/ten thousand cubic meters (MJ/ten thousand meters) 3 );CC x Carbon containing per unit heat value of the xth energy sourceAmount in tons of carbon/Ji Jiao (tC/GJ); OF (OF) x The carbon oxidation rate of the x-th energy is expressed in units;
the carbon dioxide escape emission of the welding shielding gas is calculated according to the formula (7):
(7)
wherein: p (P) k For CO in the kth shielding gas 2 The volume percentage of (2) is expressed in units of; w (W) k The net usage amount of the kth shielding gas is expressed as kilograms (kg); p (P) j The unit is the volume percentage of the j-th gas in the mixed protective gas; m is M j The unit is gram/mole (g/mol) of the mol mass of the j-th gas in the mixed protective gas; k is the type of shielding gas; j is the gas type in the mixed shielding gas;
the greenhouse gas emissions at the stage of use are calculated according to the formula (8):
(8)
wherein: e (E) u Greenhouse gas emissions in kilograms of carbon dioxide equivalent (kgCO) for the boiler use capture stage 2e ) The method comprises the steps of carrying out a first treatment on the surface of the Q is the heat generation amount of the boiler life cycle, and the unit is too much coke (TJ); EF (electric F) q Carbon emission factor in heat generation in kilograms of carbon dioxide equivalent per tera-coke (kgCO) 2e /TJ);
The total heat of the hot water or organic heat carrier boiler producing hot water or organic heat carrier is calculated according to formula (9):
(9)
wherein:taking 70% of the average operation load rate of the boiler; />Is the circulation quantity of the boiler medium, and the unit is kilogram per hour (kg/h); />Enthalpy in kilojoules per kilogram (kJ/kg) for the boiler outlet medium; />Enthalpy in kilojoules per kilogram (kJ/kg) for the inlet medium of the boiler; />The unit is the number of operating hours of the boiler, namely the hours (h); />The unit is the number of days (d) of boiler operation; yr is the number of years of boiler operation, and the unit is year;
the greenhouse gas emission in the treatment recovery acquisition stage is calculated according to the formula (10):
(10)
wherein: AD (analog to digital) converter r,n For disposal of the mass of recovered nth material in kilograms (kg); EF (electric F) r,n For disposal of the recovered nth material the corresponding emission factor is expressed in kilograms of carbon dioxide equivalents per kilogram (kgCO 2 e/kg); n is the kind of disposal recovery material.
2. The product carbon footprint accounting method of an industrial boiler according to claim 1, wherein: in performing product lifecycle carbon footprint evaluations, collecting direct greenhouse gas emissions, activity data, or emission factor site specific data is also included.
3. The product carbon footprint accounting method of an industrial boiler according to claim 1, wherein: when collecting site-specific data is not feasible, the main data that is not site-specific data and has received third party review should be used.
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Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104462771A (en) * 2014-11-07 2015-03-25 浙江工业大学 Modeling analysis method for product whole life cycle carbon footprint
CN104915513A (en) * 2015-06-25 2015-09-16 光明乳业股份有限公司 Carbon footprint analysis based package designing method
CN107169619A (en) * 2017-03-31 2017-09-15 河南工程学院 Cotton knits the construction method of product carbon footprint monitoring model
CN110807175A (en) * 2019-10-31 2020-02-18 广州市交通规划研究院 Urban traffic carbon emission measuring and calculating method based on target urban traffic model data
CN112200480A (en) * 2020-10-20 2021-01-08 重庆长安汽车股份有限公司 Data collection method for engine cylinder head full life cycle evaluation
CN113065254A (en) * 2021-04-02 2021-07-02 广东工业大学 Carbon emission measuring and calculating method for process, working condition and project level highway construction activities
CN114596072A (en) * 2022-03-11 2022-06-07 国网江苏省电力有限公司营销服务中心 Carbon footprint calculation method based on coal product
CN114637967A (en) * 2022-04-06 2022-06-17 河北光太路桥工程集团有限公司 Accounting method for carbon emission in whole process of asphalt concrete surface layer pavement
CN115409331A (en) * 2022-08-12 2022-11-29 天津市普迅电力信息技术有限公司 Carbon footprint calculation method based on cable type materials
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
CN115564106A (en) * 2022-09-29 2023-01-03 中国能源建设集团广东省电力设计研究院有限公司 Carbon emission measuring and calculating method based on electric power data
CN115619069A (en) * 2022-10-28 2023-01-17 中国农业科学院农业环境与可持续发展研究所 Carbon footprint accounting method and system for tea leaf whole life cycle
CN115689311A (en) * 2022-11-11 2023-02-03 欧冶工业品股份有限公司 Intelligent accounting method and system for carbon number data of industrial product purchase supply chain

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9141911B2 (en) * 2009-05-29 2015-09-22 Aspen Technology, Inc. Apparatus and method for automated data selection in model identification and adaptation in multivariable process control

Patent Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104462771A (en) * 2014-11-07 2015-03-25 浙江工业大学 Modeling analysis method for product whole life cycle carbon footprint
CN104915513A (en) * 2015-06-25 2015-09-16 光明乳业股份有限公司 Carbon footprint analysis based package designing method
CN107169619A (en) * 2017-03-31 2017-09-15 河南工程学院 Cotton knits the construction method of product carbon footprint monitoring model
CN110807175A (en) * 2019-10-31 2020-02-18 广州市交通规划研究院 Urban traffic carbon emission measuring and calculating method based on target urban traffic model data
CN112200480A (en) * 2020-10-20 2021-01-08 重庆长安汽车股份有限公司 Data collection method for engine cylinder head full life cycle evaluation
CN113065254A (en) * 2021-04-02 2021-07-02 广东工业大学 Carbon emission measuring and calculating method for process, working condition and project level highway construction activities
CN114596072A (en) * 2022-03-11 2022-06-07 国网江苏省电力有限公司营销服务中心 Carbon footprint calculation method based on coal product
CN114637967A (en) * 2022-04-06 2022-06-17 河北光太路桥工程集团有限公司 Accounting method for carbon emission in whole process of asphalt concrete surface layer pavement
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
CN115409331A (en) * 2022-08-12 2022-11-29 天津市普迅电力信息技术有限公司 Carbon footprint calculation method based on cable type materials
CN115564106A (en) * 2022-09-29 2023-01-03 中国能源建设集团广东省电力设计研究院有限公司 Carbon emission measuring and calculating method based on electric power data
CN115619069A (en) * 2022-10-28 2023-01-17 中国农业科学院农业环境与可持续发展研究所 Carbon footprint accounting method and system for tea leaf whole life cycle
CN115689311A (en) * 2022-11-11 2023-02-03 欧冶工业品股份有限公司 Intelligent accounting method and system for carbon number data of industrial product purchase supply chain

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
基于国际碳足迹标准的中国人造板产业碳减排路径研究;王珊珊;杨红强;;中国人口・资源与环境(04);全文 *
浅析水泥碳足迹与碳核查的区别与联系;王瑞蕴;李晋梅;李保金;胡志颖;刘宇;;中国水泥(08);全文 *

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