CN114723263A - Carbon emission and carbon reduction space accounting system for coking plant - Google Patents

Carbon emission and carbon reduction space accounting system for coking plant Download PDF

Info

Publication number
CN114723263A
CN114723263A CN202210330360.2A CN202210330360A CN114723263A CN 114723263 A CN114723263 A CN 114723263A CN 202210330360 A CN202210330360 A CN 202210330360A CN 114723263 A CN114723263 A CN 114723263A
Authority
CN
China
Prior art keywords
area
carbon
zone
plant
emission
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202210330360.2A
Other languages
Chinese (zh)
Inventor
杨靖辉
夏袁昊
耿胜松
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nanjing Hanhua Fluid Technology Co ltd
Original Assignee
Nanjing Hanhua Fluid Technology Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nanjing Hanhua Fluid Technology Co ltd filed Critical Nanjing Hanhua Fluid Technology Co ltd
Priority to CN202210330360.2A priority Critical patent/CN114723263A/en
Publication of CN114723263A publication Critical patent/CN114723263A/en
Pending legal-status Critical Current

Links

Images

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
    • G06Q10/00—Administration; Management
    • G06Q10/06—Resources, workflows, human or project management; Enterprise or organisation planning; Enterprise or organisation modelling
    • G06Q10/063—Operations research, analysis or management
    • G06Q10/0637—Strategic management or analysis, e.g. setting a goal or target of an organisation; Planning actions based on goals; Analysis or evaluation of effectiveness of goals
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F17/00—Digital computing or data processing equipment or methods, specially adapted for specific functions
    • G06F17/10—Complex mathematical operations
    • G06F17/15—Correlation function computation including computation of convolution operations
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
    • G06Q50/00—Systems or methods specially adapted for specific business sectors, e.g. utilities or tourism
    • G06Q50/04—Manufacturing
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
    • Y02P90/80—Management or planning
    • Y02P90/84—Greenhouse gas [GHG] management systems

Abstract

A carbon emission and carbon reduction space accounting system for a coke-oven plant solves the problems that the carbon emission of the coke-oven plant is only calculated manually, the method is unreasonable, the accounting result is inaccurate, the accounting efficiency is low, and the industry has no reliable measurement standard for the carbon emission. The carbon emission and carbon reduction space accounting system of the coking plant is combined with a particularity building model of the coking plant, the carbon dioxide emission generated by each link of the coking plant is calculated on line, and the carbon dioxide emission and accounting conditions inside and outside the coking plant are diagnosed and analyzed; the carbon emission conditions of all areas of the coking plant can be comprehensively tracked, the composition and distribution of the carbon emission of the coking plant are solved, a decomposition and combination model is formed to dynamically account the carbon emission, and the carbon emission conditions of the whole coking plant, all process areas and equipment can be online accounted and monitored through the accounting system; the method provides timely and reliable carbon emission data for industry carbon management of related departments, and provides basic support for development of carbon emission big data and carbon neutralization work.

Description

Carbon emission and carbon reduction space accounting system for coking plant
Technical Field
The invention belongs to the technical field of industrial artificial intelligence of metallurgy automation, and particularly relates to a carbon emission and carbon reduction space accounting system of a coking plant, which can perform online real-time accounting on the carbon emission conditions of each area and equipment of the coking plant, can perform statistical analysis and output optimization suggestions by detecting the established carbon emission intensity indexes of each area and equipment of the coking plant, and can provide technical and data support for carbon emission monitoring, accounting and supervision and inspection of energy consumption units and departments at all levels in the coking industry, carbon reduction space mining, carbon reduction measure formulation and carbon neutralization planning.
Background
As a carbon emission large household in the coking industry, the carbon reduction space is huge, and the nation pays high attention to the carbon reduction space. However, the level of carbon emissions from a coke plant cannot be accurately determined because there is no uniform product system that can accurately calculate the carbon emissions from a coke plant. At present, the calculation of carbon emission of each coking plant is limited to manual calculation and the method is not reasonable enough, so that the calculation result is not accurate enough and the calculation efficiency is low; therefore, the industry has no reliable measurement standard for carbon emission and has no way to start carbon reduction work, and the adverse condition that the carbon reduction work of the industry is urgent but is difficult to be effectively carried out is caused. There is a need for an improved coke plant carbon emissions and carbon reduction space accounting system.
Disclosure of Invention
The invention aims at the problems, and provides a carbon emission and carbon reduction space accounting system of a coking plant, which can perform online real-time accounting on the carbon emission conditions of each area and equipment of the coking plant, can perform statistical analysis and output optimization suggestions by detecting the established carbon emission intensity indexes of each area and equipment of the coking plant, and can provide technical and data support for carbon emission monitoring, accounting and supervision and inspection of energy consumption units and departments at all levels in the coking industry, carbon reduction space mining, carbon reduction measure formulation and carbon neutralization planning.
The technical scheme adopted by the invention is as follows: the carbon emission and carbon reduction space accounting system of the coke-oven plant comprises the following steps:
the method comprises the following steps of firstly, dividing a coking plant into 18 areas according to the production practice of the coking plant and the coking production process function, wherein each area is composed of different equipment groups, and the production rhythm and the operation mode are different;
step two, establishing a carbon emission model; calculating the materials in each area through a carbon emission model to obtain the carbon emission of each area, and summing to obtain the carbon emission of the coke-oven plant; and feeding back the carbon emission to a coke-oven plant to guide the production of the coke-oven plant;
step three, establishing a carbon reduction space algorithm; on the basis of the carbon emission of the existing coke-oven plant, the carbon reduction space of the coke-oven plant is calculated for the standard carbon dioxide emission of the standard coke-oven plant.
In the first step, the 18 regions are respectively: the system comprises a thawing area, a coal receiving area, a coal storing and taking area, a coal blending area, a coal humidifying area, a coking area, a coke quenching area, a leading-out area, a primary cooling area, a tar oil capturing area, a tar ammonia water separation area, an ammonia distilling area, a deamination area, a final cooling area, a debenzolization area, a desulfurization area and a hydrogen extracting area;
Figure BDA0003575067530000021
in the formula: gCoking plant-the amount of material entering and exiting the coke plant;
Gthawing zone-amount of material in the thawing zone;
Gcoal receiving area-receiving coal zone material quantity;
Gcoal storage and taking area-storing and taking the amount of material in the coal area;
Gcoal blending area-the amount of material in the blending zone;
Greturn distribution area-material quantity in the blending zone;
Gcoal moisture control zone-coal moisture control zone material quantity;
Gcoking zone-amount of material in the coking zone;
Gcoke quenching zone-material quantity in the quenching area;
Glead-out area-the amount of material in the discharge zone;
Ginitial cooling zone-initial cooling zone material quantity;
Gtar trap-amount of tar material captured;
Gtar ammonia water separation zone-amount of material in the tar ammonia separation zone;
Gammonia distillation zoneAmmonia distillation zone material quantity；
GZone of deamination-amount of material in deamination area;
Gfinal cooling zone-final cooling zone inventory;
Gdebenzolization zone-debenzolization zone inventory;
Gdesulfurization zone-amount of material in the desulfurization zone;
Ghydrogen extraction zone-hydrogen extraction zone inventory;
Figure BDA0003575067530000031
in the formula:
Figure BDA0003575067530000032
-total amount of carbon dioxide emissions from coke-oven plants;
f(Gi) -carbon dioxide emissions from various regions;
Githe amount of material in each zone of the coke-oven plant.
The second step, the established model fully integrates the specific production characteristics of the coking plant, and extends into the specific area and equipment group of the coking plant on the basis of the national standard carbon emission model to establish a carbon emission solution;
the coke plant carbon emission total model is as follows:
Figure BDA0003575067530000033
in the formula:
Figure BDA0003575067530000034
-total amount of carbon dioxide emissions;
Mburning of-fuel combustion emissions;
Mpurchase electricity-the discharge amount corresponding to the purchased power consumption;
Mheat of purchase-the discharge corresponding to the thermal consumption purchased;
Moutput electricity-the amount of discharge of the output power;
Moutput heat-discharge of corresponding thermal output;
Mcarbon sequestration-the amount of emissions implied by the carbon sequestration products for the enterprise.
Step two, the carbon emission amount of fuel combustion is equal to the product of the fuel amount and an emission factor, the carbon emission amount of power generation of purchasing and outputting is equal to the product of the electric quantity and a power supply emission factor, the carbon emission amount of heat generation of purchasing and outputting is equal to the product of heat and an annual average heat supply emission factor, and the emission amount implied by a solid carbon product is equal to the product of the solid carbon product yield and the emission factor;
(1) thawing zone
Figure BDA0003575067530000041
The carbon emission of the thawing zone comprises three items, i represents gas combustion, purchase electricity and purchase heat respectively;
(2) coal receiving area, coal storing and taking area, coal blending area, blending area and coal moisture control area
Figure BDA0003575067530000042
j represents different areas of coking, including: a coal receiving area, a coal storing and taking area, a coal blending area, a blending area and a coal humidifying area; the carbon emission calculation items of the five regions are the same and are respectively purchase electricity and purchase heat which are denoted by i;
(3) coking and quenching zones
Figure BDA0003575067530000043
j represents different areas of coking, including the coking zone and the coke quenching tower zone; the two areas have the same carbon emission calculation items, namely combustion items, purchase power and purchase heat, output power and output heat and carbon fixation products, which are represented by i;
(4) raw gas export area, primary cooling area, tar capture area, tar ammonia water separation area, ammonia distillation area, deamination area, final cooling area, desulfurization area and hydrogen extraction area
Figure BDA0003575067530000044
j represents different coking areas, including a raw gas leading-out area, an initial cooling area, a tar oil capturing area, a tar ammonia water separation area, an ammonia distillation area, a deamination area, a final cooling area, a desulfurization area and a hydrogen extraction area; the carbon emission calculation items of all the areas are the same and are respectively the purchase power and the purchase heat item which is represented by i;
(5) debenzolization zone
Figure BDA0003575067530000051
The regional carbon emission calculation items are respectively a combustion item, an electric purchase item and a heat purchase item, and are represented by i.
Thirdly, under the condition of the material consumption of each region, the carbon dioxide emission amount of each region is calculated, the carbon dioxide emission amount of each region is compared, the carbon dioxide trend of the coke-oven plant is determined, and the working direction of further reducing the carbon emission of the coke-oven plant is pointed out;
Figure BDA0003575067530000052
in the formula:
Figure BDA0003575067530000053
-carbon reduction space of a coke plant;
Figure BDA0003575067530000054
-standard total carbon dioxide emissions from a coke plant;
Figure BDA0003575067530000055
in the formula:
Figure BDA0003575067530000056
-coke plant carbon dioxide trend;
A(Gi) -carbon dioxide budget for each zone.
Determining reference indexes corresponding to 18 areas of the coke-oven plant, and calculating the carbon emission of each area on the basis of the material quantity of the 18 areas of the coke-oven plant; when the carbon emission in the region is lower than the reference index, counting is not included; when the carbon emission of the area is higher than the reference index, calculating the allowance of the area with the carbon emission higher than the reference index, wherein the allowance statistical value of 18 areas is the energy-saving space of the whole coke-oven plant;
Figure BDA0003575067530000057
in the formula:
Figure BDA0003575067530000058
-energy saving space of a coke plant;
Ai-carbon dioxide accounting for coking zones;
Figure BDA0003575067530000061
and carbon dioxide emission reference indexes of coking areas.
The invention has the beneficial effects that: the carbon emission and carbon reduction space accounting system of the coking plant is fully combined with the particularity of the coking plant to establish a model, the carbon dioxide emission generated by each link of the coking plant is calculated on line, and the carbon dioxide emission and accounting conditions inside and outside the coking plant are diagnosed and analyzed. And moreover, the carbon emission conditions of 18 areas of the coking plant can be comprehensively tracked, the composition and distribution of carbon emission of the coking plant are solved, the problem of black boxes of carbon emission of the coking plant is solved, a decomposition and combination model is formed to dynamically calculate the carbon emission, and the carbon emission conditions of the whole coking plant, each process area and all equipment can be calculated and monitored on line through the calculation system. Therefore, timely and reliable coke-oven plant carbon emission data are provided for relevant government departments to carry out industrial carbon management and build a carbon emission trading market; meanwhile, data and process auditing of a third-party checking organization are supported, and basic support is provided for developing carbon emission big data and carbon neutralization work.
Drawings
FIG. 1 is a diagram showing the process flow of a coke-oven plant under the research of the accounting system of the present invention.
Fig. 2 is a general carbon emissions total-minute-total concept diagram for a coke plant of the present invention.
FIG. 3 is a block diagram of a coking area input-output model and a carbon emission accounting model of a coke plant according to the present invention.
FIG. 4 is a diagram of analysis of carbon reduction space and carbon reduction potential of various areas of a coke plant according to the present invention.
FIG. 5 is a graph of carbon emissions from various zones of a disassembled coke plant in accordance with an embodiment of the present invention.
Figure 6 is a carbon reduction potential diagram for a coke plant in accordance with an embodiment of the present invention.
Detailed Description
The invention provides a carbon emission and carbon reduction space accounting system for a coking plant, which can comprehensively monitor the carbon emission amount of the coking plant, on-line account the composition and the proportion of the carbon emission in each area of coking in real time, comprehensively analyze the carbon reduction space and the carbon reduction potential of the coking plant, assist the coking plant to realize carbon peak reaching and carbon neutralization, and play a demonstration role for other types of industrial enterprises.
The specific steps of the present invention are explained in detail. The carbon emission and carbon reduction space accounting system of the coke-oven plant comprises:
step one, the carbon emission work difficulty of the industrial system is large, one reason is that the production process flow is complex, and the same is true of a coking plant. By adopting a general-minute-general model thought, according to the production practice of the coking plant, the coking plant is divided into 18 areas according to the coking production flow function, wherein the areas are as follows: the system comprises a thawing area, a coal receiving area, a coal storing and taking area, a coal blending area, a coal humidifying area, a coking area, a coke quenching area, a guiding area, a primary cooling area, a tar oil capturing area, a tar ammonia water separation area, an ammonia distilling area, a deamination area, a final cooling area, a debenzolization area, a desulfurization area and a hydrogen extracting area. Each area is composed of different equipment groups, the production rhythm and the operation mode are different, and the areas and the production process have different influences on carbon emission. The current accounting method of the industry is to consider the coke-oven plant as a whole and calculate the total carbon emission; however, it is clear that the specific carbon emission distribution of the coke-oven plant, finding the effective carbon-reducing node or area inside the coke-oven plant, is the key to realize the carbon emission reduction of the coke-oven plant. The process flow of the coking plant under the research thought of the accounting system is formed as shown in figure 1; the general concept of carbon emissions from a coke plant is shown in figure 2.
Figure BDA0003575067530000071
In the formula: gCoking plant-the amount of material entering and exiting the coke plant;
Gthawing zone-amount of material in the thawing zone;
Gcoal receiving area-receiving coal zone material quantity;
Gcoal storage and taking area-storing and taking the amount of material in the coal area;
Gcoal blending area-the amount of material in the blending zone;
Greturn distribution area-the amount of material in the blending zone;
Gcoal moisture control zone-coal moisture control zone material quantity;
Gcoking zone-amount of material in the coking zone;
Gcoke quenching zone-material quantity in the quenching area;
Glead-out area-the amount of material in the discharge zone;
Ginitial cooling zone-initial cooling zone inventory;
Gtar trap-the amount of tar material captured;
Gtar ammonia water separation zone-amount of material in the tar ammonia separation zone;
Gammonia distillation zone-ammonia distillation zone material quantity;
Gzone of deamination-amount of material in deamination area;
Gfinal cooling zone-final coolingMaterial quantity is divided;
Gdebenzolization zone-debenzolization zone inventory;
Gdesulfurization zone-amount of material in the desulfurization zone;
Ghydrogen extraction zoneAnd material quantity of a hydrogen extraction zone.
Figure BDA0003575067530000081
In the formula:
Figure BDA0003575067530000082
-total amount of carbon dioxide emissions from the coke plant;
f(Gi) -carbon dioxide emissions from various regions;
Githe amount of material in each zone of the coke-oven plant.
And step two, establishing a carbon emission model. Calculating the materials in each area through a carbon emission model to obtain the carbon emission of each area, and summing to obtain the carbon emission of the coke-oven plant; and the carbon emission is fed back to the coke-oven plant to guide the production of the coke-oven plant. The established model fully integrates the specific production characteristics of the coking plant, and extends into the specific area and equipment group of the coking plant on the basis of the national standard carbon emission model to establish a carbon emission solution. For example: in the national standard, coke and tar appear as carbon emission sources for fuel combustion, but are also carbon-fixing products in a coking process; the coke oven gas as a coke oven byproduct is generated and then used as fuel to be supplied to a combustion chamber of the coke oven, and a part of the fuel is consumed; steam generated in the dry quenching process is used for conveying to other areas, so that the steam needs to be included in the heat output item of the coking process.
The coke plant carbon emission total model is as follows:
Figure BDA0003575067530000091
in the formula:
Figure BDA0003575067530000092
-total amount of carbon dioxide emissions;
Mburning of-fuel combustion emissions;
Mpurchase electricity-the discharge amount corresponding to the purchased power consumption;
Mheat of purchase-the discharge corresponding to the thermal consumption purchased;
Moutput electricity-the amount of discharge of the output power;
Moutput heat-the corresponding discharge of thermal power output;
Mcarbon sequestration-the amount of emissions implied by the carbon sequestration products for the enterprise.
The carbon emission amount of fuel combustion is equal to the product of fuel amount and an emission factor, the carbon emission amount of purchased and output power generation is equal to the product of electric quantity and a power supply emission factor, the carbon emission amount of purchased and output heat generation is equal to the product of heating power and an annual average heat supply emission factor, and the emission amount implied by a solid carbon product is equal to the product of the yield of the solid carbon product and the emission factor.
1. Thawing zone
Figure BDA0003575067530000093
The carbon emission of the thawing zone comprises three terms, i represents gas combustion, purchase electricity and purchase heat respectively.
2. Coal receiving area, coal storing and taking area, coal blending area, blending area and coal moisture control area
Figure BDA0003575067530000094
j represents various zones of coking, including: a coal receiving area, a coal storing and taking area, a coal blending area, a blending area and a coal humidifying area; the carbon emissions calculations for these five zones are the same, namely, power and heat of purchase, denoted by i.
3. Coking and quenching zones
Figure BDA0003575067530000095
j represents different areas of coking, including the coking zone and the coke quenching tower zone; the two regional carbon emission calculation items are the same, namely combustion items, purchase power and purchase heat, output power and output heat and carbon fixation products, and are respectively represented by i.
4. Raw gas export area, primary cooling area, tar capture area, tar ammonia water separation area, ammonia distillation area, deamination area, final cooling area, desulfurization area and hydrogen extraction area
Figure BDA0003575067530000101
j represents different coking areas, including a raw gas leading-out area, an initial cooling area, a tar oil capturing area, a tar ammonia water separation area, an ammonia distillation area, a deamination area, a final cooling area, a desulfurization area and a hydrogen extraction area; the carbon emission calculation items of all the areas are the same, namely purchase electricity and purchase heat items which are respectively represented by i.
5. Debenzolization zone
Figure BDA0003575067530000102
The regional carbon emission calculation items are respectively a combustion item, an electric purchase item and a heat purchase item, and are represented by i.
The material to enter and exit from the coke plant is various, and particularly, taking the coke area as an example, the input-output conditions of the production process are shown in the input-output model and the carbon emission accounting model diagram of the coke area of the coke plant in fig. 3.
And step three, establishing a carbon reduction space algorithm. On the basis of the carbon emission of the existing coke-oven plant, the carbon reduction space of the coke-oven plant is calculated for the standard carbon dioxide emission of the standard coke-oven plant. And under the current material consumption of each region, the carbon dioxide emission of each region is calculated, the carbon emission of each region is compared, the carbon dioxide trend of the coke-oven plant is determined, and the working direction of further reducing the carbon emission of the coke-oven plant is pointed out.
Figure BDA0003575067530000103
In the formula:
Figure BDA0003575067530000104
-carbon reduction space of a coke plant;
Figure BDA0003575067530000105
standard carbon dioxide emission totals for coke plants.
Figure BDA0003575067530000106
In the formula:
Figure BDA0003575067530000107
-coke plant carbon dioxide trend;
A(Gi) -carbon dioxide budget for each zone.
The best value of the same column is selected as the reference index of the system. According to the 18 areas of the coke plant, the index system is formed by 18 indexes in total. The analysis chart of the carbon reduction space and the carbon reduction potential of each region of the coke-oven plant is shown in figure 4.
And determining reference indexes corresponding to 18 areas of the coke-oven plant, and calculating the carbon emission of each area on the basis of the material quantity of the 18 areas of the coke-oven plant. When the carbon emission in the region is lower than the reference index, counting is not included; and when the carbon emission of the area is higher than the reference index, calculating the allowance of the area with the carbon emission higher than the reference index, wherein the allowance statistical value of 18 areas is the energy-saving space of the whole coke-oven plant.
Figure BDA0003575067530000111
In the formula:
Figure BDA0003575067530000112
-energy saving space of a coke plant;
Ai-carbon dioxide budget for coking zones;
Figure BDA0003575067530000113
and carbon dioxide emission reference indexes of coking areas.
Examples
Taking a steel mill in China as an example, the carbon emission of a coke-oven plant is calculated as shown in Table 1. And disassembling the black box for the total carbon emission of the coking plant to obtain the carbon emission condition of each node area of the coking plant, as shown in fig. 5.
Firstly, counting the material types and input and output amounts of 18 areas in total, and determining the types of fossil fuel combustion, process amount, electric power, heating power and carbon fixation products in carbon emission calculation corresponding to each material. And then, calculating the fossil fuel combustion emission, the process emission, the purchased electricity generation emission, the output electricity generation emission, the purchased heat generation emission, the output heat generation emission and the emission implicit in the carbon fixation product of each region according to the carbon emission model. And (4) counting the total carbon dioxide emission amount of the coke-oven plant and the emission amount of carbon dioxide of each ton of steel (aiming at the steel and iron integrated enterprises).
TABLE 1 summary of carbon emissions from coke plants
Figure BDA0003575067530000121
Coke plant carbon reduction potential as shown in figure 6. The carbon emission of the coking area and the debenzolization area accounts for 86 percent of the carbon emission of the coking plant; the carbon emission of 4 areas of coal moisture control, tar ammonia water separation, ammonia distillation and deamination accounts for 11 percent of the carbon emission of the coking plant; the total carbon emissions of the remaining 12 zones accounted for 3% of the coke plant carbon emissions.
The carbon reduction potential of 18 areas of the coking plant is divided into 1-3 grades of carbon reduction potential, the 1 grade of carbon reduction potential is the largest, and the 3 grade of carbon reduction potential is the weakest. Coking and debenzolization are level 1 carbon reduction potential, 4 areas of coal moisture control, tar ammonia water separation, ammonia distillation and deamination are level 2 carbon reduction potential, and the rest 12 areas are level 3 carbon reduction potential. Coking enterprises need to pay more attention to the carbon reduction capability of a grade 1 carbon reduction potential area, pay attention to the technical improvement of a grade 2 carbon reduction potential area, and achieve carbon peak reaching and carbon neutralization more quickly.

Claims (6)

1. A carbon emission and carbon reduction space accounting system of a coke-oven plant is characterized by comprising the following steps:
the method comprises the following steps of firstly, dividing a coking plant into 18 areas according to the production practice of the coking plant and the coking production process function, wherein each area is composed of different equipment groups, and the production rhythm and the operation mode are different;
step two, establishing a carbon emission model; calculating the materials in each area through a carbon emission model to obtain the carbon emission of each area, and summing to obtain the carbon emission of the coke-oven plant; feeding back the carbon emission to the coking plant to guide the production of the coking plant;
step three, establishing a carbon reduction space algorithm; on the basis of the carbon emission of the existing coke-oven plant, the carbon reduction space of the coke-oven plant is calculated for the standard carbon dioxide emission of the standard coke-oven plant.
2. The coke plant carbon emissions and carbon reduction space accounting system of claim 1 wherein: in the first step, the 18 regions are respectively: the system comprises a thawing area, a coal receiving area, a coal storing and taking area, a coal blending area, a coal humidifying area, a coking area, a coke quenching area, a leading-out area, a primary cooling area, a tar oil capturing area, a tar ammonia water separation area, an ammonia distilling area, a deamination area, a final cooling area, a debenzolization area, a desulfurization area and a hydrogen extracting area;
Figure FDA0003575067520000011
in the formula: gCoking plant-go intoThe amount of material discharged from the coke plant;
Gthawing zone-amount of material in the thawing zone;
Gcoal receiving area-receiving coal zone material quantity;
Gcoal storage and taking area-storing and taking the amount of material in the coal area;
Gcoal blending area-the amount of material in the blending zone;
Greturn distribution area-material quantity in the blending zone;
Gcoal moisture control zone-coal moisture control zone material quantity;
Gcoking zone-amount of material in the coking zone;
Gcoke quenching zone-material quantity in the quenching area;
Glead-out area-the amount of material in the discharge zone;
Ginitial cooling zone-initial cooling zone material quantity;
Gtar trap-amount of tar material captured;
Gtar ammonia water separation zone-amount of material in the tar ammonia separation zone;
Gammonia distillation zone-ammonia distillation zone material quantity;
Gzone of deamination-amount of material in deamination area;
Gfinal cooling zone-final cooling zone inventory;
Gdebenzolization zone-debenzolization zone inventory;
Gdesulfurization zone-amount of material in the desulfurization zone;
Ghydrogen extraction zone-hydrogen extraction zone inventory;
Figure FDA0003575067520000021
in the formula:
Figure FDA0003575067520000022
-total amount of carbon dioxide emissions from the coke plant;
f(Gi) -carbon dioxide emissions from various regions;
Githe amount of material in each zone of the coke-oven plant.
3. The coke plant carbon emissions and carbon reduction space accounting system of claim 1 wherein: the second step, the established model fully integrates the specific production characteristics of the coking plant, and extends into the specific area and equipment group of the coking plant on the basis of the national standard carbon emission model to establish a carbon emission solution;
the coke plant carbon emission total model is as follows:
Figure FDA0003575067520000024
in the formula:
Figure FDA0003575067520000023
-total amount of carbon dioxide emissions;
Mburning of-fuel combustion emissions;
Mpurchase electricity-the amount of discharge corresponding to the purchased power consumption;
Mheat of purchase-the discharge corresponding to the thermal consumption purchased;
Moutput electricity-the amount of discharge of the output power;
Moutput heat-the corresponding discharge of thermal power output;
Mcarbon sequestration-the amount of emissions implied by the carbon sequestration products for the enterprise.
4. The coke plant carbon emissions and carbon reduction space accounting system of claim 3 wherein: step two, the carbon emission amount of fuel combustion is equal to the product of the fuel amount and an emission factor, the carbon emission amount of power generation of purchasing and outputting is equal to the product of the electric quantity and a power supply emission factor, the carbon emission amount of heat generation of purchasing and outputting is equal to the product of heat and an annual average heat supply emission factor, and the emission amount implied by a solid carbon product is equal to the product of the solid carbon product yield and the emission factor;
(1) thawing zone
Figure FDA0003575067520000031
The carbon emission of the thawing zone comprises three items, i represents gas combustion, purchase electricity and purchase heat respectively;
(2) coal receiving area, coal storing and taking area, coal blending area, blending area and coal moisture control area
Figure FDA0003575067520000032
j represents different areas of coking, including: a coal receiving area, a coal storing and taking area, a coal blending area, a blending area and a coal humidifying area; the carbon emission calculation items of the five regions are the same and are respectively purchase electricity and purchase heat which are denoted by i;
(3) coking and quenching zones
Figure FDA0003575067520000033
j represents different areas of coking, including the coking zone and the coke quenching tower zone; the two areas have the same carbon emission calculation items, namely combustion items, purchase power and purchase heat, output power and output heat and carbon fixation products, which are represented by i;
(4) raw gas export area, primary cooling area, tar capture area, tar ammonia water separation area, ammonia distillation area, deamination area, final cooling area, desulfurization area and hydrogen extraction area
Figure FDA0003575067520000041
j represents different coking areas, including a raw gas leading-out area, an initial cooling area, a tar-trapping area, a tar-ammonia water separation area, an ammonia distillation area, an ammonia removal area, a final cooling area, a desulfurization area and a hydrogen extraction area; the carbon emission calculation items of all the areas are the same and are respectively the purchase power and the purchase heat item which is represented by i;
(5) debenzolization zone
Figure FDA0003575067520000042
The regional carbon emission calculation items are respectively a combustion item, an electric purchase item and a heat purchase item, and are represented by i.
5. The coke plant carbon emissions and carbon reduction space accounting system of claim 1 wherein: thirdly, under the condition of the material consumption of each region, the carbon dioxide emission amount of each region is calculated, the carbon dioxide emission amount of each region is compared, the carbon dioxide trend of the coke-oven plant is determined, and the working direction of further reducing the carbon emission of the coke-oven plant is pointed out;
Figure FDA0003575067520000043
in the formula:
Figure FDA0003575067520000044
-carbon reduction space of a coke plant;
Figure FDA0003575067520000045
-standard total carbon dioxide emissions from a coke plant;
Figure FDA0003575067520000046
in the formula:
Figure FDA0003575067520000047
-coke plant carbon dioxide trend;
A(Gi) -carbon dioxide budget for each zone.
6. The coke plant carbon emissions and carbon reduction space accounting system of claim 5 wherein: determining reference indexes corresponding to 18 areas of the coke-oven plant, and calculating the carbon emission of each area on the basis of the material quantity of the 18 areas of the coke-oven plant; when the carbon emission in the region is lower than the reference index, counting is not included; when the carbon emission of the area is higher than the reference index, calculating the allowance of the area with the carbon emission higher than the reference index, wherein the allowance statistical value of 18 areas is the energy-saving space of the whole coke-oven plant;
Figure FDA0003575067520000051
in the formula:
Figure FDA0003575067520000052
-energy saving space of coke plant;
Ai-carbon dioxide accounting for coking zones;
Figure FDA0003575067520000053
and carbon dioxide emission reference indexes of coking areas.
CN202210330360.2A 2022-03-31 2022-03-31 Carbon emission and carbon reduction space accounting system for coking plant Pending CN114723263A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202210330360.2A CN114723263A (en) 2022-03-31 2022-03-31 Carbon emission and carbon reduction space accounting system for coking plant

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210330360.2A CN114723263A (en) 2022-03-31 2022-03-31 Carbon emission and carbon reduction space accounting system for coking plant

Publications (1)

Publication Number Publication Date
CN114723263A true CN114723263A (en) 2022-07-08

Family

ID=82239193

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202210330360.2A Pending CN114723263A (en) 2022-03-31 2022-03-31 Carbon emission and carbon reduction space accounting system for coking plant

Country Status (1)

Country Link
CN (1) CN114723263A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115187133A (en) * 2022-08-04 2022-10-14 东南大学 Traditional residential building operation phase carbon emission accounting method based on dynamic monitoring

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115187133A (en) * 2022-08-04 2022-10-14 东南大学 Traditional residential building operation phase carbon emission accounting method based on dynamic monitoring
CN115187133B (en) * 2022-08-04 2023-11-14 东南大学 Dynamic monitoring-based carbon discharge accounting method for traditional residential operation stage

Similar Documents

Publication Publication Date Title
CN103544273B (en) Method for assessing integral states of furnace conditions by aid of pattern recognition technology
CN116050934B (en) Product carbon footprint accounting method of industrial boiler
CN107316112B (en) Thermal power generating unit emission reduction scheme customization method and system with optimal cost benefit
CN107274027A (en) A kind of many coal coal mixing combustion optimization methods of coal unit
Na et al. Optimization of energy efficiency, energy consumption and CO2 emission in typical iron and steel manufacturing process
Zahraee et al. Water-energy nexus and greenhouse gas–sulfur oxides embodied emissions of biomass supply and production system: A large scale analysis using combined life cycle and dynamic simulation approach
CN114723263A (en) Carbon emission and carbon reduction space accounting system for coking plant
CN114943480A (en) Iron and steel enterprise carbon emission monitoring method
CN112330179A (en) Fuzzy comprehensive evaluation method for coal blending combustion based on improved entropy weight method
CN116503225A (en) Carbon emission track analysis method for regional power distribution network key emission industry
Xia et al. An online case-based reasoning system for coal blends combustion optimization of thermal power plant
CN114282736A (en) Monitoring and management method for carbon emission of oil refining enterprise
Nurdiawati et al. Towards fossil-free steel: Life cycle assessment of biosyngas-based direct reduced iron (DRI) production process
Hu et al. Multi-objective optimization of energy distribution in steel enterprises considering both exergy efficiency and energy cost
CN116664161B (en) Carbon dioxide emission accounting technology selection method based on coal-fired thermal power plant
Zhang et al. Integrated optimization for utilizing iron and steel industry’s waste heat with urban heating based on exergy analysis
CN114445235A (en) Carbon footprint accounting method for high-sulfur-content gas field product
CN116882775A (en) Steel industry carbon asset management system and method
CN111091230A (en) Scientific coal blending co-combustion system based on coal full-value chain management of coal-fired power plant
Sultanguzin et al. Optimizing the production of coke, coal chemicals, and steel on the basis of environmental and energy criteria
CN110598185A (en) Coke oven coking unit consumption influence factor sequencing method and system
CN112779032B (en) Coke oven on-line thermal testing method
CN114662927A (en) Oil refining chemical industry enterprise carbon metering management system and method
CN115656461A (en) Coal electric unit real-time carbon emission monitoring method based on coal quality soft measurement
CN103870881A (en) Input-output method-based blast furnace-converter long-process steel production process CO2 emission examining method

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination