CN103870880A - Electric-arc furnace steel production process carbon dioxide examination method based on ISO (International Standardization Organization) standard - Google Patents
Electric-arc furnace steel production process carbon dioxide examination method based on ISO (International Standardization Organization) standard Download PDFInfo
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- CN103870880A CN103870880A CN201410057507.0A CN201410057507A CN103870880A CN 103870880 A CN103870880 A CN 103870880A CN 201410057507 A CN201410057507 A CN 201410057507A CN 103870880 A CN103870880 A CN 103870880A
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Abstract
The invention discloses an electric-arc furnace steel production process carbon dioxide examination method based on an ISO (International Standardization Organization) standard. The method is used for examining carbon dioxide emission load per ton steel in the electric-arc furnace steel production process, and raw material and energy consumption data of an electric-arc furnace steel plant are used as a basis. The examination method comprises the steps that the electric-arc furnace steel plant work flow, a material inlet, an energy source inlet, a product outlet and an emission outlet are firstly determined, and the material inlet, the energy source inlet, the product outlet and the emission outlet form a system boundary of the electric-arc furnace steel plant; the work flow is divided into four working procedure sections according to steelmaking, continuous casting, steel rolling and auxiliary working procedures, and the consumption of each raw material and the consumption of each energy source item are examined according to the sequences of teams or groups, workshops and the working procedure sections from bottom to top in each working procedure section; links of raw materials, processing, transportation and storage are covered when data item statistics is carried out, and an unique code is built for each data item of each working procedure; the carbon dioxide emission load of each working procedure can be obtained by aggregate through combining the carbon dioxide emission parameters of materials with the carbon dioxide emission parameters of the energy items; the carbon dioxide emission load of each working procedure is aggregated, the deduction items of by-products and emission are subtracted from the aggregated carbon dioxide emission load to obtain the carbon dioxide emission load per ton steel of the electric-arc furnace steel plant.
Description
Technical field
The present invention relates to Ferrous Metallurgy field, is a kind of based on iso standard, for interrogating and examining electric arc furnaces steel manufacture process steel CO per ton specifically
2the method of discharge capacity.
Background technology
Greenhouse gases are increasingly serious on the impact of global climate, CO
2be subject to global common concern because discharge capacity is huge as main greenhouse gas.Chinese Government pays much attention to climate change problem, has taked a series of policies and measures, and has promised to undertake to the whole world: the CO to the year two thousand twenty unit's gross domestic product (GDP) in 2009
2discharge was than decline 40%-45% in 2005.Country 12. in five planning outlines, determined that during " 12 ", per Unit GDP Energy Consumption will reduce by 16%, carbon intensity will reduce by 17% strategic objective.For strictly implementing these goal tasks, State Council has printed and distributed " " 12 " control greenhouse gas emission programme of work ", and relevant department and local people's governments at different levels actively take action, and accelerate the adjustment of the industrial structure, saves the energy, improves efficiency.
Industrial activity is the principal element that produces greenhouse gases, and wherein steel industry is that global energy density ranks first place, CO
2discharge capacity occupies second industry.Therefore how to reduce CO
2discharge becomes the key problem that global steel industry is paid close attention to.Under the integration of IISI (IISI), release CO
2break through plan, actively subtract the research and development of carbon technique, the low-carbon (LC) production technology of exploitation novelty, significantly reduces ton steel CO
2discharge, advocate simultaneously each iron and steel enterprise drop petrochemical material rely on, low CO
2the road of discharge.
Now different tissue and country proposed a lot of methods for the calculating of steel industry greenhouse gas emission in the world, but ununified method.China's steel industry has also been carried out the research of carbon emission computing method, but ununified codes and standards also.
Use the method based on life cycle to interrogate and examine CO
2it is the way that current international community comparatively generally acknowledges.Cycle assessment method can on the greenhouse gas emission of product, service, unit and on environment potential impact evaluate, it is interrogated and examined process and mainly comprises: scope determine, inventory analysis, affect evaluation and explain Four processes.ISO 14067 interrogates and examines and evaluates for the greenhouse gas emission of a product and service, and ISO 14064 standards are done carbon footprint to the greenhouse gas emission of a tissue or enterprise and interrogated and examined and evaluate.But this standard is not for some specific products, unit, service, is the principle of generality with directive significance.
Present patent application is followed the principle of ISO14064, ISO14047, (life cycle is divided into " complete life cycle " and " basic life cycle " to adopt " basic life cycle ", for product, the former comprises: the complete procedure of raw material exploitation, transportation, production and processing, use, destruction; The latter only comprises raw material exploitation, transportation, process of manufacture, does not comprise and using and during Destruction) the CO of method to electric arc furnaces steel manufacture process
2discharge is interrogated and examined, interrogating and examining the raw material and the energy datum that relate to take steel manufacture process is basis, the scope of interrogating and examining is starting point from raw material and transportation thereof, going out steel mill to steel is terminating point, that is: adopt " the basic life cycle " of from " starting point " to " gate " to interrogate and examine method, be called in the world " B2B " (Business-to-Business goods) pattern.
Summary of the invention
The application is for electric arc furnaces steel manufacture process CO
2interrogate and examine studying of process, proposed a set of ISO14064, ISO14067 standard of both having met, take into account again the electric arc furnaces steel manufacture process CO of China's steel industry feature
2interrogate and examine and statistical method.
The application has complied with the industry policy that national energy-saving reduces discharging, and by interrogating and examining the potentiality that can help enterprise's energy-saving excavation to reduce discharging, is also conducive to following carbon tax system, the carbon trade system that may implement of steel plant's reply.
The ton steel CO of the application to electric arc furnaces flow process steel manufacture process
2discharge capacity is interrogated and examined, and follows the basic demand of ISO14064, ISO14047, takes the following thinking of interrogating and examining: first determine technique that electric arc furnaces iron and steel produces, interrogate and examine scope, interrogate and examine priority; Then investigate each material items and energy source item, to the CO of data item
2discharge capacity is added up and is gathered; Finally calculate CO
2total release and ton steel discharge capacity.For reaching the object of the invention, the application analyzes and studies for interrogating and examining time institute's committed step, has proposed following solution (scheme of the invention).
To the CO of electric arc furnaces Steel Production Flow Chart
2interrogate and examine, take the raw material of steel plant and the data of energy consumption as basis, first determine the technological process of production, draw craft process flow diagram, then the system boundary of clear and definite electric arc furnaces Steel Production Flow Chart (factory's enclosure wall).Interrogate and examine scope take steel plant enter factory raw material and can source item as starting point, go out steel mill as terminal take finished steel, determine steel mill material inlet, can source inlet, products export, emission outlet, this has formed the border of system.
The material inlet of electric arc furnaces Steel Production Flow Chart mainly comprises: steel scrap, graphite electrode, fire resistive material, lime, ferroalloy; Energy for factory entrance mainly comprises: the electricity of outsourcing, rock gas, coal gas, Xin Shui, gasoline, heavy oil; The products export of factory mainly comprises: steel; Emission outlet mainly comprises: middle water, vessel slag, gas.
Electric arc furnaces Steel Production Flow Chart mainly comprises: electric-arc furnace steelmaking, continuous casting, steel rolling, four operations of aided process, enter carbon element a series of variations of process in each operation of iron and steel production system by the energy, flux and other various forms, a part enters product or various secondary product, and another part is discharged with waste gas.By electric-arc furnace steelmaking, continuous casting, steel rolling, aided process, production procedure is divided into four operation sections, the material items to four operation sections, energy source item are interrogated and examined successively; When also having subordinate's operation (workshop) in each operation section, more when the operation of subordinate (teams and groups), according to teams and groups-workshop-operation section order from bottom to top, successively to each raw material, can source item interrogate and examine.Above-mentionedly form the priority that electric arc furnaces Steel Production Flow Chart is interrogated and examined.
When data item statistics, contain raw material, processing, manufacture, transportation, storage links, both comprised the related raw material of production run, auxiliary material, the energy that also comprises production run, water consumption, gas consumption, and the aided process, storage, packing, the transportation option that in producing, relate to.Iron and steel carbon footprint calculates and mainly comprises following 3 scopes:
discharge capacity, comprises various fossil fuels, flux, raw material indirectly; 2. the indirectly upstream discharge that outsourcing electric power, heat and steam bring; Middle water, electric arc furnaces steel slag can be used as secondary product when deduction.3. comprise the discharge that the production upstream of various fuel, raw material, flux and dynamic medium is brought, and raw material transportation, store, pack each aided process, the indirect discharge of auxiliary.
For ease of management data, each raw material of each operation and energy consumption are all set up to unique code, code is made up of 7 bit digital, (from left to right) front two digitized representation divides large operation section, for example, electric-arc furnace steelmaking-05, continuous casting-06, steel rolling-07, according to each factory actual conditions, can increase distinctive operation; (from left to right) the 3rd, 4 represent little operation (for example workshop, teams and groups); (from left to right) 5th ~ 7 for representing material items, energy source item, when code is compiled, and for ease of management, large, for example: steel scrap, ferroalloy, fire resistive material, before coming.
CO
2the computing formula of discharge is:
Wherein: CFT represents total CO
2; CF
αfor directly discharging CO
2;
CF
βfor indirect emission of carbon footprint (ton); CF
γfor carbon emission power deduction (ton);
V
ifor the consumption (ton or 10 of production run carbon input end i kind raw material or fuel
3nm
3);
EF
ibe the CO of i kind raw material or energy source item
2emission factor (also referred to as carbon equivalent coefficient);
W
jfor the amount (ton or 10 of production run carbon output terminal j kind product, waste material
3nm
3);
EF
jbe the CO of j kind product or raw material
2emission factor.
The consumption of each raw material, energy term is multiplied by its CO
2emission factor is exactly this CO
2discharge capacity, gathers all material items in operation and CO that can source item
2discharge capacity, can obtain the total CO of this operation
2discharge capacity.
Selecting CO
2when emission factor, in view of the current domestic authoritative national CO that there is no
2emission factor database, the carbon equivalent coefficient that should preferentially select domestic authoritative department to issue, for example: National Development and Reform Committee, Chinese Academy of Engineering.
Gather the CO of electric arc furnace steel plant master operation section
2discharge, the CO of the deduction of deduction electric arc furnace steel plant secondary product
2discharge, just obtain the CO of steel mill's reality
2discharge capacity, actual CO
2discharge capacity, divided by total output of steel, just can calculate the ton steel CO of electric arc furnace steel plant
2discharge value.
If discharge capacity that it should be noted that single statistical items lower than total emission volumn 1% time, can get rid of, but the total amount of getting rid of can not exceed this products C O
25% of total emission volumn, otherwise must recall, again interrogate and examine.
Especially, this method of interrogating and examining can be interrogated and examined an average CO of ton steel that electric arc furnaces steel plant are total
2discharge capacity, is applicable to the ton steel CO of some steel grades too
2discharge capacity.
Accompanying drawing explanation
Fig. 1 is the CO of electric arc furnaces steel plant
2interrogate and examine order and interrogate and examine main points.
Fig. 2 is the processing procedure of each data item of electric arc furnaces steel manufacture process.
Fig. 3 is the system boundary of electric arc furnaces steel plant (B factory) and the consumption data of ton steel.
Embodiment
For understanding better object of the present invention, technical method, provide a specific embodiment below in conjunction with accompanying drawing.
The master operation of the production procedure of certain typical electric arc furnaces steel plant (B factory) comprising: electric-arc furnace steelmaking, continuous casting, steel rolling, product postprocessing working procedures.1 CO providing by reference to the accompanying drawings
2the order of interrogating and examining and interrogate and examine main points, provides explanation below.
First understand the production technology of B factory, draw out flow sheet, then determine the system boundary of electric arc furnaces production procedure.Interrogate and examine take the raw material of B factory and energy consumption data as basis, interrogate and examine scope take the raw material of B factory and can source item enter factory as starting point, go out steel mill as terminal take finished steel, adopt the method (B2B pattern) of basic life cycle to interrogate and examine.Interrogate and examine material inlet, energy source inlet, products export, the emission outlet of first determining electric-arc furnace steelmaking factory, this has formed the border (enclosure wall) of system.
The material of B factory is bought item and is comprised: steel scrap, fire resistive material, ferroalloy, lime; The energy is bought item and is comprised electric power, diesel oil, water, rock gas; Products export item comprises: steel; Emission outlet mainly comprises: middle water, electric arc furnaces slag.
By steel-making, continuous casting, steel rolling, product postprocessing working procedures, production procedure is divided into four operation sections, successively they is interrogated and examined; When also having subordinate's operation in each operation section: workshop, the more operation of subordinate: when teams and groups, according to teams and groups-workshop-operation section order from bottom to top, each operation is interrogated and examined.
According to the scope of interrogating and examining and order, the consumption figures of all raw material items, energy term is added up.Because each material items of steel manufacture process is various, for the ease of data management, utilize program to manage each data item, the application works out a data item treatment scheme for this reason, referring to accompanying drawing 2.
The consumption of each raw material, energy term is multiplied by its CO
2emission factor is exactly its CO
2discharge capacity, gathers all material items and CO that can source item
2discharge capacity, can obtain the total CO of this operation
2discharge capacity.
Selecting CO
2when emission factor, in view of the current domestic authoritative national native country CO that there is no
2emission factor database, the carbon equivalent coefficient that should preferentially select domestic authoritative department to issue, for example, National Development and Reform Committee, Chinese Academy of Engineering.
As shown in Figure 3, in accompanying drawing 3, the value of each data item is the consumption numerical value of ton steel to the system boundary of B steel plant production procedure.Middle water, electric arc furnaces steel slag can be used as secondary product when deduction.
Gather the CO of each operation of steel mill
2discharge, the CO of the deduction of deduction steel mill secondary product
2discharge, just obtain the CO of steel mill's reality
2discharge capacity, actual CO
2discharge capacity, divided by total output of steel, just can calculate the ton steel CO of electric arc furnace steel plant
2discharge value.
By gathering the CO of each operation of B factory
2discharge, can calculate the ton steel CO of B factory
2value is: 0.875 ton of CO
2/ ton steel, higher than 0.775 ton of CO of international steel mill
2the average level of/ton steel.
The above just describes the present invention in detail by preferred embodiment; but should not limit with this scope of patent working of the present invention; one of ordinary skill in the art without departing from the spirit and scope of the invention; the same changes and improvements that relatively described embodiment carries out, all should belong to the technical scope that the present invention protects.
Claims (5)
1. the electric arc furnaces steel manufacture process CO based on iso standard
2interrogate and examine method, take the raw material of electric arc furnaces steel plant and the data of energy consumption as basis, follow ISO14064, ISO14047 greenhouse gases and interrogate and examine the principle of assessment, to the ton steel CO of electric arc furnaces steel manufacture process
2discharge capacity is interrogated and examined, and it is characterized in that: (1) is first determined Steel Production Flow Chart and confirmed the material inlet of steel plant's system, energy source inlet, products export, emission outlet, and this has formed the system boundary of steel mill; (2) by steel-making, continuous casting, steel rolling and aided process, production procedure is divided into four operation sections, while having the less operation in workshop, teams and groups in each operation section, according to teams and groups-workshop-operation section order from bottom to top interrogate and examine each operation raw material, can source item; (3) when data item is added up, contain raw material, processing, manufacture, transportation, storage links, and set up unique code for each data item; The consumption of each raw material, energy term is multiplied by its CO
2emission factor is exactly the CO of described item
2discharge capacity; (4) gather all material items and CO that can source item
2discharge capacity, obtains the CO of described operation
2discharge capacity; (5) gather the CO of all process steps
2discharge capacity, the deduction carbon equivalent of deduction steel mill secondary product, just obtains the CO of steel mill's reality
2discharge capacity, actual CO
2discharge capacity, divided by the total output of steel of steel mill, just can obtain the CO of steel average emission per ton
2amount.
2. the CO of electric arc furnaces steel manufacture process according to claim 1
2interrogate and examine method, it is characterized in that: the material inlet dominant term of steel plant comprises: steel scrap, fire resistive material, lime, ferroalloy, electrode; The energy inlet boundary dominant term of steel plant comprises: outer power purchase, Xin Shui, gasoline, rock gas, heavy oil, diesel oil; The dominant term of steel plant's products export comprises: steel; Emission outlet dominant term comprises: middle water, electric arc furnaces slag.
3. the CO of electric arc furnaces steel manufacture process according to claim 1
2interrogate and examine method, it is characterized in that: CO
2the computing formula of discharge is:
Wherein: CFT represents total CO
2; CF
αfor directly discharging CO
2;
CF
βfor indirect emission of carbon footprint; CF
γfor the deduction of carbon emission power;
V
ifor the consumption of production run carbon input end i kind raw material or fuel;
EF
ibe the CO of i kind raw material or energy source item
2emission factor;
W
jfor the amount of production run carbon output terminal j kind product, waste material;
EF
jbe the CO of j kind product or raw material
2emission factor.
4. the CO of electric arc furnaces steel manufacture process according to claim 1
2interrogate and examine method, it is characterized in that: if while interrogating and examining the discharge capacity of single statistical items lower than total emission volumn 1% time, can get rid of, but get rid of total amount can not exceed described products C O
25% of total emission volumn, otherwise must recall.
5. the CO of electric arc furnaces steel manufacture process according to claim 1
2interrogate and examine method, it is characterized in that: described in the method for interrogating and examining can be applied to and interrogate and examine the total ton steel CO of electric arc furnaces steel plant
2discharge capacity, can also be applied to the ton steel CO that interrogates and examines a concrete steel grade
2discharge capacity.
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| CN201410057507.0A CN103870880A (en) | 2014-02-20 | 2014-02-20 | Electric-arc furnace steel production process carbon dioxide examination method based on ISO (International Standardization Organization) standard |
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| CN201410057507.0A CN103870880A (en) | 2014-02-20 | 2014-02-20 | Electric-arc furnace steel production process carbon dioxide examination method based on ISO (International Standardization Organization) standard |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112328854A (en) * | 2020-09-04 | 2021-02-05 | 天津大学 | Life cycle analysis-based evaluation method for waste gas emission reduction environmental impact of iron and steel enterprise |
| WO2023115310A1 (en) * | 2021-12-21 | 2023-06-29 | 北京航空航天大学苏州创新研究院 | System and method for calculating carbon emissions in crude steel production |
-
2014
- 2014-02-20 CN CN201410057507.0A patent/CN103870880A/en active Pending
Non-Patent Citations (2)
| Title |
|---|
| 上官方钦等: "关于钢铁行业CO2排放计算方法的探讨", 《钢铁研究学报》 * |
| 张颖: "钢铁厂能耗评估与CO2排放量计算", 《中国优秀硕士学位论文全文数据库工程科技Ⅰ辑》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112328854A (en) * | 2020-09-04 | 2021-02-05 | 天津大学 | Life cycle analysis-based evaluation method for waste gas emission reduction environmental impact of iron and steel enterprise |
| WO2023115310A1 (en) * | 2021-12-21 | 2023-06-29 | 北京航空航天大学苏州创新研究院 | System and method for calculating carbon emissions in crude steel production |
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Application publication date: 20140618 |