CN112085329A - Comprehensive power generation cost estimation method and economic benefit estimation method for multi-coal blending combustion - Google Patents
Comprehensive power generation cost estimation method and economic benefit estimation method for multi-coal blending combustion Download PDFInfo
- Publication number
- CN112085329A CN112085329A CN202010771406.5A CN202010771406A CN112085329A CN 112085329 A CN112085329 A CN 112085329A CN 202010771406 A CN202010771406 A CN 202010771406A CN 112085329 A CN112085329 A CN 112085329A
- Authority
- CN
- China
- Prior art keywords
- ton
- cost
- coal
- furnace
- fuel
- 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.)
- Granted
Links
- 239000003245 coal Substances 0.000 title claims abstract description 212
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 100
- 238000000034 method Methods 0.000 title claims abstract description 88
- 238000010248 power generation Methods 0.000 title claims abstract description 60
- 238000002156 mixing Methods 0.000 title claims abstract description 56
- 230000008901 benefit Effects 0.000 title claims abstract description 21
- 239000000446 fuel Substances 0.000 claims abstract description 133
- 238000012937 correction Methods 0.000 claims abstract description 35
- 230000008859 change Effects 0.000 claims abstract description 34
- 230000007613 environmental effect Effects 0.000 claims abstract description 19
- 238000012545 processing Methods 0.000 claims abstract description 6
- 230000008569 process Effects 0.000 claims description 45
- 238000006477 desulfuration reaction Methods 0.000 claims description 42
- 230000023556 desulfurization Effects 0.000 claims description 42
- 239000010881 fly ash Substances 0.000 claims description 35
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 29
- 229910052602 gypsum Inorganic materials 0.000 claims description 24
- 239000010440 gypsum Substances 0.000 claims description 24
- 239000002893 slag Substances 0.000 claims description 22
- 239000003795 chemical substances by application Substances 0.000 claims description 18
- 238000010344 co-firing Methods 0.000 claims description 16
- 230000003009 desulfurizing effect Effects 0.000 claims description 15
- 239000002956 ash Substances 0.000 claims description 11
- 238000011156 evaluation Methods 0.000 abstract description 4
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 2
- 239000003546 flue gas Substances 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- -1 for example Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
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
- G06F17/11—Complex mathematical operations for solving equations, e.g. nonlinear equations, general mathematical optimization problems
-
- 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
- G06Q30/00—Commerce
- G06Q30/02—Marketing; Price estimation or determination; Fundraising
- G06Q30/0201—Market modelling; Market analysis; Collecting market data
- G06Q30/0206—Price or cost determination based on market factors
-
- 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—Information and communication technology [ICT] specially adapted for implementation of business processes of specific business sectors, e.g. utilities or tourism
- G06Q50/06—Energy or water supply
Landscapes
- Engineering & Computer Science (AREA)
- Business, Economics & Management (AREA)
- Physics & Mathematics (AREA)
- Strategic Management (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Human Resources & Organizations (AREA)
- Economics (AREA)
- Development Economics (AREA)
- Entrepreneurship & Innovation (AREA)
- Data Mining & Analysis (AREA)
- Marketing (AREA)
- Mathematical Physics (AREA)
- General Business, Economics & Management (AREA)
- Accounting & Taxation (AREA)
- Finance (AREA)
- Educational Administration (AREA)
- Tourism & Hospitality (AREA)
- Computational Mathematics (AREA)
- Mathematical Analysis (AREA)
- Health & Medical Sciences (AREA)
- Game Theory and Decision Science (AREA)
- Pure & Applied Mathematics (AREA)
- Operations Research (AREA)
- Mathematical Optimization (AREA)
- General Engineering & Computer Science (AREA)
- Quality & Reliability (AREA)
- Algebra (AREA)
- Public Health (AREA)
- Water Supply & Treatment (AREA)
- General Health & Medical Sciences (AREA)
- Primary Health Care (AREA)
- Databases & Information Systems (AREA)
- Software Systems (AREA)
Abstract
The application discloses a comprehensive power generation cost estimation method and an economic benefit evaluation method for multi-coal blending combustion. The comprehensive power generation cost estimation method comprises the following steps: acquiring fuel purchasing cost and coal blending cost of the fuel entering the furnace and environment-friendly treatment cost of combustion products of the fuel entering the furnace, wherein the fuel entering the furnace at least comprises two coal types; obtaining the income brought by the comprehensive utilization of the environment-friendly treatment product of the combustion product of the fuel entering the furnace; acquiring a co-combustion cost change correction coefficient relative to the combustion of a single coal type when the furnace entering fuel is combusted, wherein the co-combustion cost change correction coefficient is used for representing the boiler efficiency and the plant power rate when the furnace entering fuel is combusted and the deviation relative to the combustion of the single coal type; and calculating the comprehensive power generation cost of the fuel entering the furnace based on the fuel purchase cost, the coal blending cost, the environmental protection processing cost, the income and the co-combustion cost change correction coefficient, so that the method can be used for estimating the power generation cost of the multi-coal co-combustion.
Description
Technical Field
The application relates to the technical field of coal-fired thermal power, in particular to a comprehensive power generation cost estimation method and an economic benefit evaluation method for multi-coal-type co-combustion.
Background
Currently, with the advanced improvement of the power market, in order to control the power generation cost, coal-fired power generation enterprises generally need to mix two or more coal types, for example, mix a relatively low-price coal type into other coal types to perform combustion power generation, so as to control the power generation cost. Therefore, it is desirable to provide a method for estimating the power generation cost of blending multiple coal types.
Disclosure of Invention
The comprehensive power generation cost estimation method and the economic benefit evaluation method for multi-coal co-combustion provided by the embodiment of the application can be used for estimating the power generation cost of multi-coal co-combustion, so that the problems in the prior art are solved.
The embodiment of the application provides a comprehensive power generation cost estimation method for multi-coal blending combustion, which comprises the following steps:
acquiring fuel purchasing cost and coal blending cost of furnace entering fuel, and environment-friendly treatment cost of combustion products of the furnace entering fuel, wherein the furnace entering fuel at least comprises two coal types;
obtaining the income brought by the comprehensive utilization of the environment-friendly treatment product of the combustion product of the furnace entering fuel;
acquiring a co-combustion cost change correction coefficient when the furnace entering fuel is combusted relative to the combustion of a single coal type, wherein the co-combustion cost change correction coefficient is used for representing the boiler efficiency and the plant power consumption rate when the furnace entering fuel is combusted and the deviation of the boiler efficiency and the plant power consumption rate relative to the combustion of the single coal type;
and calculating the comprehensive power generation cost of the fuel entering the furnace based on the fuel purchasing cost, the coal blending cost, the environment-friendly treatment cost, the income and the co-combustion cost change correction coefficient.
Preferably, the obtaining of the co-combustion cost change correction coefficient when the furnace entering fuel is combusted relative to the combustion of a single coal type specifically includes:
respectively acquiring boiler efficiency and plant power consumption rate of the furnace fuel and the single coal type when the fuel and the single coal type are burned in the furnace under the same condition;
and calculating the co-combustion cost change correction coefficient according to the boiler efficiency and the plant power consumption rate corresponding to the fuel entering the boiler and the boiler efficiency and the plant power consumption rate corresponding to the single coal type.
Preferably, the co-firing cost change correction coefficient is calculated according to the boiler efficiency and the plant power consumption rate corresponding to the fuel entering the boiler and the boiler efficiency and the plant power consumption rate corresponding to the single coal type, and specifically includes calculating the co-firing cost change correction coefficient by the following formula:
wherein, the co-firing cost change correction coefficient is obtained;
ηb0boiler efficiency for said single coal species;
λ0the plant power rate of the single coal type is used;
Δηbboiler efficiency vs. η for said incoming fuelb0The amount of change in (c);
delta lambda is the plant power rate of the fuel entering the furnace relative to lambda0The amount of change in (c).
Preferably, the obtaining of the profit brought by the comprehensive utilization of the environment-friendly treatment product of the combustion product of the furnace-entering fuel specifically includes calculating the profit by the following formula:
CS＝PHL×EHL+PZL×EZL+PGL×EGL；
wherein, CSFor the profit, the unit is yuan/ton standard coal;
PHLthe comprehensive utilization amount of fly ash for burning one ton of standard coal as fuel is measured in ton/ton of standard coal;
PZLthe comprehensive utilization amount of bottom slag for burning one ton of standard coal as fuel is measured in ton/ton of standard coal;
PGLthe comprehensive utilization amount of gypsum for burning one ton of standard coal as fuel is measured in ton/ton of standard coal;
EHLthe unit is unit price for comprehensive utilization of fly ash, and the unit is yuan/ton;
EZLthe unit is the unit price of comprehensive utilization of the bottom slag, and the unit is yuan/ton;
EGLthe unit is the unit price for comprehensive utilization of gypsum and the unit is yuan/ton.
Preferably, the comprehensive power generation cost of the fuel entering the furnace is calculated based on the fuel purchasing cost, the coal blending cost, the environmental protection processing cost, the income and the co-combustion cost change correction coefficient, and specifically the comprehensive power generation cost is calculated by the following formula:
CD＝(CZ-CS)×(1+)；
wherein, CDThe unit is the unit of yuan/ton standard coal for the comprehensive power generation cost;
correcting the co-firing cost variation coefficient;
CS(ii) is the benefit;
CZthe sum of the fuel purchasing cost, the coal blending cost and the environmental protection treatment cost is unit of yuan/ton standard coal.
Preferably, the acquiring the environmental protection treatment cost specifically includes: obtaining the blending combustion denitration cost, the blending combustion desulfurization cost and the blending combustion ash disposal cost.
Preferably, the blending combustion denitration cost is obtained by the following method:
CTX＝PTX×EJ3+PXS×EXS；
wherein, CTXThe unit is yuan/ton standard coal for the blending combustion denitration cost;
PTXfor burning one ton of standard coal and entering the furnace fuel environment-friendly placeThe dosage of the denitrifier is determined as ton/ton of standard coal;
EJ3the unit price of the denitrifier is yuan/ton;
PXSthe water consumption of the denitration process for burning one ton of standard coal as fuel is measured in ton/ton of standard coal;
EXSthe unit price of the denitration process water is Yuan/ton.
Preferably, the co-firing desulfurization cost is obtained by:
CTL＝PTL1×EJ1+PTL2×EJ2+PLS×ELS+PSG×ESG；
wherein, CTLThe unit is yuan/ton standard coal for the blending combustion desulfurization cost;
PTL1the amount of the desulfurizer used in the furnace for burning one ton of standard coal into the furnace for environment-friendly treatment is ton/ton of standard coal;
EJ1the unit price of the desulfurizing agent in the furnace is yuan/ton;
PTL2the amount of the desulfurizing agent outside the furnace for burning one ton of standard coal into the furnace for environment-friendly treatment is determined as ton/ton of standard coal;
EJ2is the unit price of the desulfurizing agent outside the furnace, and the unit is yuan/ton;
PLSthe water consumption of the external desulfurization process for burning one ton of standard coal to be fired is unit of ton/ton of standard coal;
ELSthe unit is the unit price of the external desulfurization process water, and the unit is yuan/ton;
PSGthe gypsum amount is the gypsum amount generated by wet desulphurization outside a furnace by burning one ton of standard coal and putting the standard coal into the furnace, and the unit is ton/ton of standard coal;
ESGthe unit price for gypsum disposal and outward transportation is yuan/ton.
Preferably, the disposal cost of the blended burned ash is obtained by the following method:
wherein, CHZThe unit is yuan/ton standard coal for the disposal cost of the blended combustion ash;
PHthe fly ash amount is the fly ash amount generated by burning one ton of standard coal into the furnace, and the unit is ton/ton of standard coal;
PZthe amount of bottom slag generated by burning one ton of standard coal into the furnace is ton/ton of standard coal;
lambda is fly ash humidification proportion;
EYthe unit price for outward transportation of fly ash and slag disposal is yuan/ton;
PZSthe water consumption of the fly ash humidifying process for burning one ton of standard coal as fuel is measured in ton/ton of standard coal;
EZSthe unit price of the process water for humidifying the fly ash is yuan/ton.
The embodiment of the application provides an economic benefit evaluation method for multi-coal blending combustion, which comprises the following steps:
the comprehensive power generation cost estimation method for the multi-coal-type co-combustion obtains the comprehensive power generation cost of the fuel entering the furnace, wherein the fuel entering the furnace at least comprises two coal types;
acquiring a second comprehensive power generation cost when the single coal is put into the furnace to be combusted under the same condition;
and calculating the economic benefit of the furnace fuel based on the comprehensive power generation cost and the second comprehensive power generation cost.
The embodiment of the application adopts at least one technical scheme which can achieve the following beneficial effects:
by adopting the comprehensive power generation cost estimation method for multi-coal blending combustion provided by the embodiment of the application, the fuel purchase cost, the coal blending cost and the environment-friendly treatment cost of combustion products of the fuel entering the furnace are obtained, the income brought by comprehensive utilization of the environment-friendly treatment products of the combustion products of the fuel entering the furnace is obtained, the blending combustion cost change correction coefficient relative to the single coal combustion during the combustion of the fuel entering the furnace is obtained, and then the comprehensive power generation cost of the fuel entering the furnace is calculated based on the fuel purchase cost, the coal blending cost, the environment-friendly treatment cost, the income and the blending combustion cost change correction coefficient, so that the comprehensive power generation cost estimation method can be used for estimating the power generation cost of multi-coal blending combustion.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:
fig. 1 is a schematic specific flow chart of a comprehensive power generation cost estimation method for multi-coal blending combustion provided in an embodiment of the present application.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the technical solutions of the present application will be described in detail and completely with reference to the following specific embodiments of the present application and the accompanying drawings. It should be apparent that the described embodiments are only some of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The technical solutions provided by the embodiments of the present application are described in detail below with reference to the accompanying drawings.
As shown above, coal-fired power generation enterprises generally need to mix two or more kinds of coal, for example, mix relatively low-priced coal into other coal to generate power by combustion, so as to control the power generation cost. Therefore, it is desirable to provide a method for evaluating the power generation cost of blending multiple coal types.
Based on this, the embodiment of the application provides a comprehensive power generation cost estimation method for multi-coal blending combustion, which can be used for solving the above problems. As shown in fig. 1, the method comprises the steps of:
step S11: and acquiring the fuel purchasing cost of the fuel entering the furnace.
The furnace fuel comprises at least two kinds of coal, for example, two or more kinds of coal are doped to obtain the furnace fuel, and the furnace fuel is put into a furnace to be combusted and generate power.
As a specific way to obtain the fuel procurement cost of the fuel entering the furnace, the procurement cost of each coal type entering the furnace may be calculated separately and summed up, so as to finally calculate the fuel procurement cost of the fuel entering the furnace, for example, the fuel procurement cost of the fuel entering the furnace may be calculated by the following formula:
in the calculation formula, CGThe unit of the purchase cost of the fuel of the furnace entering fuel can be yuan/ton standard coal.
And n is the total quantity of coal in the fuel entering the furnace.
CiGThe purchase unit price of the ith coal type in the furnace fuel can be Yuan/ton raw coal, and the value range of i is 1 to n.
xiThe raw coal blending combustion mass ratio of the ith coal type in the furnace fuel is, for example, 20%, 25% and the like.
QHMThe unit of the lower calorific value of the fuel entering the furnace can be kilocalories/kilogram and the like.
N is a benchmark for converting raw coal into standard coal, for example, the value of N in China is usually 7000 kcal/kg.
For xiCan be obtained by the following calculation formula:
wherein, BiThe quality of the raw coal of the ith coal type in the fuel entering the furnace; b isALLThe total raw coal mass of the fuel charged into the furnace can be generally determined by the sum of the raw coal masses of the respective coal types.
Step S12: and obtaining the coal blending cost of the fuel entering the furnace.
Due to the fact that various coal types are involved in the fuel entering the furnace, corresponding cost is brought when the various coal types are mixed, and the coal mixing cost can be calculated through the following formula.
CPM＝PPM×N/QHM
In the calculation formula, CPMThe unit of the coal blending cost of the furnace entering fuel can be yuan/ton standard coal.
PPMThe unit of raw coal is blended for the boiler.
As mentioned above, N is a standard for converting raw coal into standard coal, for example, the value of N in China is usually 7000 kcal/kg; qHMThe unit of the lower calorific value of the fuel entering the furnace can be kilocalories/kilogram and the like.
Step S13: and obtaining the environment-friendly treatment cost of the combustion products of the fuel entering the furnace.
In practical applications, the combustion products of the fuel entering the furnace mainly include fly ash, slag, flue gas, etc., so the environmental protection treatment may include treatment of the fly ash, slag, flue gas, etc., for example, the environmental protection treatment cost may include a blended-burning denitration cost, a blended-burning desulfurization cost, and a blended-burning ash disposal cost.
Wherein, because a denitration agent and denitration process water are needed in the denitration process, the mixed-burning denitration cost mainly comprises the cost of the two parts, and the calculation formula is as follows:
CTX＝PTX×EJ3+PXS×EXS；
in the calculation formula, CTXThe unit of the mixed-burning denitration cost can be Yuan/ton standard coal. PTXThe dosage of the denitrifier used for burning one ton of standard coal into the furnace for environment-friendly treatment can be one ton per ton of standard coal. EJ3The unit of the denitrifier is yuan per ton. PXSThe unit of the water consumption of the denitration process for burning one ton of standard coal as fuel can be ton/ton of standard coal. EXSThe unit of the denitration process water is unit price of the denitration process water, and the denitration process water can be yuan/ton.
The disposal cost of the blended burning ash includes the disposal cost of the fly ash, the slag and the like, and because a certain amount of humidifying process water needs to be sprayed into the fly ash to increase the humidity of the fly ash and finally the fly ash, the slag and the like need to be transported outwards, the calculation formula mainly comprises the cost of humidifying the fly ash, the cost of transporting the fly ash, the slag and the like, and the disposal cost of the blended burning ash can be calculated by adopting the following formula:
in the calculation formula, CHZFor the disposal cost of the blended combustion ash, the unit can be yuan/ton standard coal. PHThe fly ash amount generated by burning one ton of standard coal into the furnace can be expressed in ton/ton of standard coal. PZThe amount of slag (also called bottom slag) produced in order to burn one ton of the standard coal as fuel is charged to the furnace may be expressed in tons per ton of the standard coal. Lambda is fly ash humidification ratio. EYThe export unit price for fly ash and slag disposal can be in units of yuan per ton. PZSThe water consumption of the fly ash humidifying process for burning one ton of standard coal as fuel can be one ton/ton of standard coal. EZSThe unit of the process water for humidifying the fly ash can be yuan/ton.
In the desulfurization process, two desulfurization processes of in-furnace desulfurization and out-of-furnace desulfurization are usually included, and in the out-of-furnace desulfurization process, the out-of-furnace desulfurization process water may be used, and the produced gypsum is transported outwards, so that when only the in-furnace desulfurization process is included, the co-combustion desulfurization cost is specifically the cost of the in-furnace desulfurizer, which can be calculated by the using amount of the in-furnace desulfurizer and the unit price of the in-furnace desulfurizer; when only the external desulfurization process is included, the blended combustion desulfurization cost is specifically composed of the cost of the external desulfurizing agent, the cost of the external desulfurization process water and the cost of the gypsum external transportation, wherein the cost of the external desulfurizing agent is calculated by the using amount of the external desulfurizing agent and the unit price of the external desulfurizing agent, the cost of the external desulfurization process water is calculated by the using amount of the external desulfurization process water and the unit price of the external desulfurization process water, and the cost of the gypsum external transportation is calculated by the generated gypsum amount and the transportation unit price thereof.
Particularly, when the desulfurization process in the furnace and the desulfurization process outside the furnace are simultaneously included, the blending combustion desulfurization cost is composed of four parts of the cost of the desulfurizing agent in the furnace, the cost of the desulfurizing agent outside the furnace, the cost of the desulfurization process water outside the furnace and the cost of transporting gypsum outside, and the calculation formula can be as follows:
CTL＝PTL1×EJ1+PTL2×EJ2+PLS×ELS+PSG×ESG；
in the calculation formula, CTLThe unit of the blended combustion desulfurization cost can be yuan/ton standard coal for simultaneously comprising the in-furnace desulfurization process and the out-furnace desulfurization process. PTL1The unit of the amount of the desulfurizer used in the furnace for burning one ton of standard coal into the furnace for environment-friendly treatment can be ton/ton of standard coal. EJ1The unit of the unit is the unit price of the desulfurizing agent in the furnace, and the unit can be Yuan/ton. PTL2The unit of the amount of the desulfurizing agent outside the furnace for burning one ton of standard coal into the furnace and environment-friendly treatment can be ton/ton of standard coal. EJ2The unit of the desulfurizing agent outside the furnace is yuan per ton. PLSThe unit of the water consumption of the external desulfurization process for burning one ton of standard coal to be fired can be ton/ton of standard coal. ELSThe unit of the external desulfurization process water can be yuan/ton. PSGThe gypsum produced by wet desulphurization outside the furnace for burning one ton of standard coal to be fired can be expressed in ton/ton of standard coal. ESGThe unit of the unit for the outward transportation of the gypsum can be yuan/ton.
Similarly, when only the in-furnace desulfurization process is involved, the co-firing desulfurization cost is specifically the in-furnace desulfurization agent cost, which can be represented by PTL1×EJ1And (4) calculating. When only the external desulfurization process is included, the blended combustion desulfurization cost is specifically composed of the external desulfurization agent cost, the external desulfurization process water cost and the gypsum transportation cost, and can be PTL2×EJ2+PLS×ELS+PSG×ESGAnd (4) calculating.
Step S14: and obtaining the benefit brought by comprehensive utilization of the environment-friendly treatment product of the combustion product of the fuel entering the furnace.
In the actual reaction, the income mainly comprises the income of comprehensive utilization of gypsum, the income of comprehensive utilization of bottom slag, the income of comprehensive utilization of fly ash and the like. The utilization yield of the gypsum can be calculated from the comprehensive utilization unit price of the gypsum and the comprehensive utilization amount of the gypsum, the comprehensive utilization yield of the bottom slag can be calculated from the comprehensive utilization unit price of the bottom slag and the comprehensive utilization amount of the bottom slag, and the comprehensive utilization yield of the fly ash can be calculated from the comprehensive utilization unit price of the fly ash and the comprehensive utilization amount of the fly ash.
Thus, the benefit may be calculated by the following formula:
CS＝PHL×EHL+PZL×EZL+PGL×EGL；
in the calculation formula, CSFor the calculated profit, the unit can be yuan per ton of standard coal. PHLThe unit of the comprehensive utilization amount of the fly ash for burning one ton of standard coal as fuel can be ton/ton of standard coal. PZLThe comprehensive utilization amount of the bottom slag for burning one ton of standard coal as fuel is determined in the unit of ton/ton of standard coal. PGLThe comprehensive utilization amount of gypsum for burning one ton of standard coal into the furnace can be expressed in the unit of ton/ton of standard coal. EHLThe unit of the unit is yuan/ton for the comprehensive utilization unit of the fly ash. EZLThe unit of the comprehensive utilization unit of the bottom slag can be yuan/ton. EGLThe unit of the comprehensive utilization unit of the gypsum can be yuan/ton.
Step S15: and acquiring a co-combustion cost change correction coefficient when the furnace entering fuel is combusted relative to the combustion of a single coal type.
The co-combustion cost change correction coefficient is used for representing the boiler efficiency and the plant power consumption rate when the fuel entering the boiler is combusted, and is relative to the deviation when single coal is combusted.
For example, the fuel can be fed into the furnace to be combusted under a certain condition (such as primary air coal, secondary air volume and the like), so as to measure the corresponding boiler efficiency and plant power consumption rate, and then the single coal can be fed into the furnace to be combusted under the same condition, so as to measure the corresponding boiler efficiency and plant power consumption rate. And then calculating to obtain the co-firing cost change correction coefficient according to the boiler efficiency and the plant power consumption rate corresponding to the fuel entering the boiler and the boiler efficiency and the plant power consumption rate corresponding to the single coal type. Wherein, the single coal type can be any single coal type in the fuel entering the boiler, or can also be designed for the boiler, etc.
For example, the co-firing cost change correction factor can be calculated by using the following formula:
in the calculation formula, the co-firing cost change correction coefficient is used. Etab0The boiler efficiency for that single coal type. Lambda [ alpha ]0The plant power rate of the single coal type. Δ ηbBoiler efficiency vs. eta for incoming fuelb0The variation of (a) can be determined from the boiler efficiency and eta of the fuel charged into the boilerb0The difference of (a) is calculated. Delta lambda is the plant power rate of the fuel entering the furnace relative to lambda0The variation of (a) can be determined from the plant power rate and lambda of the fuel fed to the furnace0The difference of (a) is calculated.
Step S16: and calculating the comprehensive power generation cost of the fuel entering the furnace based on the obtained fuel purchasing cost, coal blending cost, environment-friendly treatment cost, income and co-combustion cost change correction coefficient.
In practical application, the comprehensive power generation cost can be calculated by the following calculation formula:
CD＝(CZ-CS)×(1+)；
in the calculation formula, CDThe unit of the calculated comprehensive power generation cost can be yuan/ton standard coal. The doping cost variation correction coefficient calculated in the above step S15. CSThe profit calculated in the above step S14. CZIs composed of
The fuel procurement cost of the fuel to be charged can be calculated in the above step S11, the coal blending cost of the fuel to be charged can be calculated in the above step S12, the environmental protection treatment cost can be calculated in the above step S13, and the total cost C can be calculated by summing the above threeZThe unit can be Yuan/ton standard coal.
Note that at the total cost CZThe method mainly comprises two parts, wherein one part is the fuel purchase cost of the fuel entering the furnace and can be obtained by the stepsThe S11 is obtained by calculation, and the other part of the added cost of the fuel entering the furnace is the coal blending cost and the environmental protection treatment cost which are respectively obtained by calculation in the step S12 and the step S13, so that the cost in more aspects of raw materials, coal blending, environmental protection treatment and the like can be comprehensively considered, and the total cost can be more comprehensively and accurately calculated.
By adopting the comprehensive power generation cost estimation method for multi-coal blending combustion provided by the embodiment of the application, the fuel purchase cost, the coal blending cost and the environment-friendly treatment cost of combustion products of the fuel entering the furnace are obtained, the income brought by comprehensive utilization of the environment-friendly treatment products of the combustion products of the fuel entering the furnace is obtained, the blending combustion cost change correction coefficient relative to the single coal combustion during the combustion of the fuel entering the furnace is obtained, and then the comprehensive power generation cost of the fuel entering the furnace is calculated based on the fuel purchase cost, the coal blending cost, the environment-friendly treatment cost, the income and the blending combustion cost change correction coefficient, so that the comprehensive power generation cost estimation method can be used for estimating the power generation cost of multi-coal blending combustion.
In addition, in the method, the fuel purchasing cost, the coal blending cost and the environmental protection processing cost are calculated when the cost is calculated, the benefit brought by comprehensive utilization of environmental protection processing products is also calculated, and the co-combustion cost change correction coefficient relative to the combustion of single coal when the fuel is fired into the furnace is combined, so the estimated power generation cost is combined with the total cost, the total benefit and the co-combustion cost change correction coefficient, and the power generation cost is more accurate.
In the above steps, the execution sequence of step S11 to step S15 is not limited, and for example, step S15 may be executed to calculate the doping burning cost change correction factor, and then step S11 to step S14 may be executed, step S13 may be executed to calculate the eco-process cost, and then other steps may be executed, or of course, step S11 to step S15 may be executed in another execution sequence, and after step S11 to step S15 are executed, step S16 may be executed again according to the execution result.
In practical applications, after the comprehensive power generation cost of the blending combustion of multiple coal types is estimated by the method, the economic benefit of the blending combustion of multiple coal types is generally evaluated by comparing with that of a single coal type. Therefore, on the basis of the method for estimating the comprehensive power generation cost of the multi-coal-type co-combustion, the method for estimating the economic benefit of the multi-coal-type co-combustion can be provided, and the method for estimating the comprehensive power generation cost of the fuel entering the furnace can be used for acquiring the comprehensive power generation cost of the fuel entering the furnace, wherein the fuel entering the furnace at least comprises two types of coal; then, acquiring a second comprehensive power generation cost of single coal when the single coal is put into a furnace to be combusted under the same conditions, wherein the same conditions refer to the same combustion conditions of the single coal when the single coal is put into the furnace, such as the same conditions of primary air coal quantity, secondary air quantity and the like; then, the economic benefit of the fuel charged into the furnace is calculated based on the integrated power generation cost and the second integrated power generation cost.
For example, the economic benefit can be calculated by the following calculation formula:
ΔC＝CD-C0
in the calculation formula, Δ C is the economic benefit, and the unit thereof can be yuan/ton of standard coal. CDFor the cost of the comprehensive power generation, the unit can be Yuan/ton standard coal. C0For this second integrated power generation cost, the unit may be yuan per ton of standard coal.
For C0Firstly, calculating the fuel purchasing cost of the single coal type according to the unit price and the consumption of the single coal type; then, calculating the environmental protection treatment cost of the combustion products, wherein the environmental protection treatment cost can also be as shown in step S13, and the environmental protection treatment cost comprises the blended combustion denitration cost, the blended combustion desulfurization cost, the blended combustion ash disposal cost and the like; then, the profit due to the comprehensive utilization of the environmental treatment product is calculated, and the calculation process of the profit may be as shown in step S14. After calculating the fuel purchasing cost, the environmental protection processing cost and the income, C can be calculated by the three0。
It is to be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in the process, method, article, or apparatus that comprises the element.
The above are merely examples of the present application and are not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.
Claims (10)
1. A comprehensive power generation cost estimation method for multi-coal blending combustion is characterized by comprising the following steps:
acquiring fuel purchasing cost and coal blending cost of furnace entering fuel, and environment-friendly treatment cost of combustion products of the furnace entering fuel, wherein the furnace entering fuel at least comprises two coal types;
obtaining the income brought by the comprehensive utilization of the environment-friendly treatment product of the combustion product of the furnace entering fuel;
acquiring a co-combustion cost change correction coefficient when the furnace entering fuel is combusted relative to the combustion of a single coal type, wherein the co-combustion cost change correction coefficient is used for representing the boiler efficiency and the plant power consumption rate when the furnace entering fuel is combusted and the deviation of the boiler efficiency and the plant power consumption rate relative to the combustion of the single coal type;
and calculating the comprehensive power generation cost of the fuel entering the furnace based on the fuel purchasing cost, the coal blending cost, the environment-friendly treatment cost, the income and the co-combustion cost change correction coefficient.
2. The method according to claim 1, wherein obtaining a co-firing cost variation correction factor when the furnace entering fuel is fired relative to the combustion of a single coal type specifically comprises:
respectively acquiring boiler efficiency and plant power consumption rate of the furnace fuel and the single coal type when the fuel and the single coal type are burned in the furnace under the same condition;
and calculating the co-combustion cost change correction coefficient according to the boiler efficiency and the plant power consumption rate corresponding to the fuel entering the boiler and the boiler efficiency and the plant power consumption rate corresponding to the single coal type.
3. The method according to claim 2, wherein calculating the co-firing cost variation correction factor according to the boiler efficiency and the plant power consumption rate corresponding to the incoming fuel and the boiler efficiency and the plant power consumption rate corresponding to the single coal type specifically comprises calculating the co-firing cost variation correction factor by the following formula:
wherein, the co-firing cost change correction coefficient is obtained;
ηb0boiler efficiency for said single coal species;
λ0the plant power rate of the single coal type is used;
Δηbboiler efficiency vs. η for said incoming fuelb0The amount of change in (c);
delta lambda is the plant power rate of the fuel entering the furnace relative to lambda0The amount of change in (c).
4. The method of claim 1, wherein capturing revenue from the environmentally treated product of the fired fuel combustion product comprises calculating revenue by the following equation:
CS＝PHL×EHL+PZL×EZL+PGL×EGL；
wherein, CSFor the profit, the unit is yuan/ton standard coal;
PHLthe comprehensive utilization amount of fly ash for burning one ton of standard coal as fuel is measured in ton/ton of standard coal;
PZLcomprehensive utilization of bottom slag for burning one ton of standard coalThe unit of the amount is ton/ton standard coal;
PGLthe comprehensive utilization amount of gypsum for burning one ton of standard coal as fuel is measured in ton/ton of standard coal;
EHLthe unit is unit price for comprehensive utilization of fly ash, and the unit is yuan/ton;
EZLthe unit is the unit price of comprehensive utilization of the bottom slag, and the unit is yuan/ton;
EGLthe unit is the unit price for comprehensive utilization of gypsum and the unit is yuan/ton.
5. The method of claim 1, wherein calculating a total power generation cost for the incoming fuel based on the fuel procurement cost, the coal blending cost, the environmental disposal cost, the revenue, and the co-firing cost variation correction factor comprises calculating the total power generation cost by the following equation:
CD＝(CZ-CS)×(1+)；
wherein, CDThe unit is the unit of yuan/ton standard coal for the comprehensive power generation cost;
correcting the co-firing cost variation coefficient;
CS(ii) is the benefit;
CZthe sum of the fuel purchasing cost, the coal blending cost and the environmental protection treatment cost is unit of yuan/ton standard coal.
6. The method of claim 1, wherein obtaining the environmental protection processing cost specifically comprises: obtaining the blending combustion denitration cost, the blending combustion desulfurization cost and the blending combustion ash disposal cost.
7. The method of claim 6, wherein the blended-burn denitration cost is obtained by:
CTX＝PTX×EJ3+PXS×EXS；
wherein, CTXThe unit is yuan/ton standard coal for the blending combustion denitration cost;
PTXthe dosage of the denitrifier for burning one ton of standard coal into the furnace to carry out environment-friendly treatment is ton/ton of standard coal;
EJ3the unit price of the denitrifier is yuan/ton;
PXSthe water consumption of the denitration process for burning one ton of standard coal as fuel is measured in ton/ton of standard coal;
EXSthe unit price of the denitration process water is Yuan/ton.
8. The method of claim 6, wherein the co-firing desulfurization cost is obtained by:
CTL＝PTL1×EJ1+PTL2×EJ2+PLS×ELS+PSG×ESG；
wherein, CTLThe unit is yuan/ton standard coal for the blending combustion desulfurization cost;
PTL1the amount of the desulfurizer used in the furnace for burning one ton of standard coal into the furnace for environment-friendly treatment is ton/ton of standard coal;
EJ1the unit price of the desulfurizing agent in the furnace is yuan/ton;
PTL2the amount of the desulfurizing agent outside the furnace for burning one ton of standard coal into the furnace for environment-friendly treatment is determined as ton/ton of standard coal;
EJ2is the unit price of the desulfurizing agent outside the furnace, and the unit is yuan/ton;
PLSthe water consumption of the external desulfurization process for burning one ton of standard coal to be fired is unit of ton/ton of standard coal;
ELSthe unit is the unit price of the external desulfurization process water, and the unit is yuan/ton;
PSGthe gypsum amount is the gypsum amount generated by wet desulphurization outside a furnace by burning one ton of standard coal and putting the standard coal into the furnace, and the unit is ton/ton of standard coal;
ESGthe unit price for gypsum disposal and outward transportation is yuan/ton.
9. The method of claim 6, wherein the blended burned ash disposal cost is obtained by:
wherein, CHZThe unit is yuan/ton standard coal for the disposal cost of the blended combustion ash;
PHthe fly ash amount is the fly ash amount generated by burning one ton of standard coal into the furnace, and the unit is ton/ton of standard coal;
PZthe amount of bottom slag generated by burning one ton of standard coal into the furnace is ton/ton of standard coal;
lambda is fly ash humidification proportion;
EYthe unit price for outward transportation of fly ash and slag disposal is yuan/ton;
PZSthe water consumption of the fly ash humidifying process for burning one ton of standard coal as fuel is measured in ton/ton of standard coal;
EZSthe unit price of the process water for humidifying the fly ash is yuan/ton.
10. The method for evaluating the economic benefit of multi-coal blending combustion is characterized by comprising the following steps of:
acquiring the comprehensive power generation cost of the fuel entering the furnace by the method according to any one of claims 1 to 9, wherein the fuel entering the furnace comprises at least two kinds of coal;
acquiring a second comprehensive power generation cost when the single coal is put into the furnace to be combusted under the same condition;
and calculating the economic benefit of the furnace fuel based on the comprehensive power generation cost and the second comprehensive power generation cost.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010771406.5A CN112085329B (en) | 2020-08-04 | 2020-08-04 | Comprehensive power generation cost estimation method and economic benefit estimation method for multi-coal co-firing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010771406.5A CN112085329B (en) | 2020-08-04 | 2020-08-04 | Comprehensive power generation cost estimation method and economic benefit estimation method for multi-coal co-firing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112085329A true CN112085329A (en) | 2020-12-15 |
| CN112085329B CN112085329B (en) | 2024-03-08 |
Family
ID=73735793
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010771406.5A Active CN112085329B (en) | 2020-08-04 | 2020-08-04 | Comprehensive power generation cost estimation method and economic benefit estimation method for multi-coal co-firing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112085329B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112862632A (en) * | 2021-04-23 | 2021-05-28 | 南昌暖焰电力科技有限公司 | Method and system for blending and burning coal in thermal power plant |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20060087868A (en) * | 2005-01-31 | 2006-08-03 | 한국동서발전(주) | Method for estimating coal operation cost and computer readable recording medium for performing it |
| JP2007209076A (en) * | 2006-01-31 | 2007-08-16 | Chugoku Electric Power Co Inc:The | Method and program for selecting species of coal for power generation |
| JP2008008522A (en) * | 2006-06-27 | 2008-01-17 | Nippon Steel Corp | Boiler fuel charging amount deciding method, boiler fuel control device and program |
| CN107065517A (en) * | 2017-03-31 | 2017-08-18 | 华北电力科学研究院有限责任公司 | A kind of optimization method of coal mixing combustion |
| CN107230024A (en) * | 2017-06-13 | 2017-10-03 | 中国大唐集团科学技术研究院有限公司华东分公司 | A kind of blending method of thermal power generation |
| CN108074020A (en) * | 2018-01-11 | 2018-05-25 | 湖南大唐先科技有限公司 | A kind of intelligence coal mixing combustion optimization method and its system |
| CN108537406A (en) * | 2018-03-09 | 2018-09-14 | 中国大唐集团科学技术研究院有限公司火力发电技术研究所 | Power plant boiler uses more coal Analysis of Economy Benefit Evaluation Methods |
| CN111091230A (en) * | 2019-11-20 | 2020-05-01 | 国电浙能宁东发电有限公司 | Scientific coal blending co-combustion system based on coal full-value chain management of coal-fired power plant |
-
2020
- 2020-08-04 CN CN202010771406.5A patent/CN112085329B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20060087868A (en) * | 2005-01-31 | 2006-08-03 | 한국동서발전(주) | Method for estimating coal operation cost and computer readable recording medium for performing it |
| JP2007209076A (en) * | 2006-01-31 | 2007-08-16 | Chugoku Electric Power Co Inc:The | Method and program for selecting species of coal for power generation |
| JP2008008522A (en) * | 2006-06-27 | 2008-01-17 | Nippon Steel Corp | Boiler fuel charging amount deciding method, boiler fuel control device and program |
| CN107065517A (en) * | 2017-03-31 | 2017-08-18 | 华北电力科学研究院有限责任公司 | A kind of optimization method of coal mixing combustion |
| CN107230024A (en) * | 2017-06-13 | 2017-10-03 | 中国大唐集团科学技术研究院有限公司华东分公司 | A kind of blending method of thermal power generation |
| CN108074020A (en) * | 2018-01-11 | 2018-05-25 | 湖南大唐先科技有限公司 | A kind of intelligence coal mixing combustion optimization method and its system |
| CN108537406A (en) * | 2018-03-09 | 2018-09-14 | 中国大唐集团科学技术研究院有限公司火力发电技术研究所 | Power plant boiler uses more coal Analysis of Economy Benefit Evaluation Methods |
| CN111091230A (en) * | 2019-11-20 | 2020-05-01 | 国电浙能宁东发电有限公司 | Scientific coal blending co-combustion system based on coal full-value chain management of coal-fired power plant |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112862632A (en) * | 2021-04-23 | 2021-05-28 | 南昌暖焰电力科技有限公司 | Method and system for blending and burning coal in thermal power plant |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112085329B (en) | 2024-03-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110319455B (en) | Boiler coal blending method | |
| JPS60102921A (en) | Control of addition amount of reducing agent | |
| CN103995987B (en) | Heat efficiency analysis method for pulverized coal boiler with blending combustion of blast furnace gas | |
| CN106268261A (en) | A kind of method of SNCR denitrating flue gas | |
| Huang et al. | Bi-level multi-objective programming approach for carbon emission quota allocation towards co-combustion of coal and sewage sludge | |
| CN112085329A (en) | Comprehensive power generation cost estimation method and economic benefit estimation method for multi-coal blending combustion | |
| CN110135065A (en) | A kind of burning air distribution optimization method based on coal quality soft-measuring technique | |
| CN108537406A (en) | Power plant boiler uses more coal Analysis of Economy Benefit Evaluation Methods | |
| CN108201784A (en) | A kind of grate-type biomass power plant boiler flue gas purification tapping equipment and its method | |
| CN104615898B (en) | The method for obtaining coal and blast furnace gas multifuel combustion CFB boiler air leak rate of air preheater | |
| CN112580890B (en) | Method and system for predicting variable cost of power generation by blending and burning mixed coal of boiler for power generation | |
| CN111085091A (en) | Method for determining desulfurization proportion inside and outside circulating fluidized bed boiler and desulfurization system | |
| CN107653009A (en) | A kind of high-efficiency cleaning alcohol fuel oil and preparation method thereof and device | |
| Kohn | Application of linear programming to a controversy on air pollution control | |
| CN104315519A (en) | Low-pollution self-cleaning combustion method and device for high-nitrogen content combustible waste | |
| CN112862632B (en) | Method and system for blending and burning coal in thermal power plant | |
| CN107118789A (en) | Reduce iron-based compound additive and preparation method and the application of domestic coke nitrogen content | |
| CN104017614B (en) | A kind of high-performance alcohol-group fuel | |
| CN111763541A (en) | High-calorific-value clean fuel for industrial boiler and preparation method thereof | |
| CN117391734B (en) | Power generation cost prediction method based on support vector machine regression model | |
| CN212057256U (en) | Storage type powder making boiler | |
| CN117391336A (en) | Method and related equipment for determining combustion blending result of thermal generator set | |
| Chen et al. | Environmental/economic dispatch approach for microgrid with uncooperative game control strategy | |
| CN101007976A (en) | Usage method for combustion-aided dust-removing additive for coal firing | |
| Tariq et al. | Industrial use of biomass energy in Sri Lanka |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |