CN112085329B - Comprehensive power generation cost estimation method and economic benefit estimation method for multi-coal co-firing - Google Patents
Comprehensive power generation cost estimation method and economic benefit estimation method for multi-coal co-firing Download PDFInfo
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- 239000003245 coal Substances 0.000 title claims abstract description 216
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- 238000010248 power generation Methods 0.000 title claims abstract description 58
- 230000008901 benefit Effects 0.000 title claims abstract description 50
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- 230000008859 change Effects 0.000 claims abstract description 21
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- 238000006477 desulfuration reaction Methods 0.000 claims description 49
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- 230000008569 process Effects 0.000 claims description 47
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- 230000007613 environmental effect Effects 0.000 claims description 31
- 239000003795 chemical substances by application Substances 0.000 claims description 30
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 30
- 239000002893 slag Substances 0.000 claims description 25
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- 239000002956 ash Substances 0.000 claims description 9
- 230000004048 modification Effects 0.000 claims description 6
- 238000012986 modification Methods 0.000 claims description 6
- 230000005611 electricity Effects 0.000 abstract description 3
- 238000011156 evaluation Methods 0.000 description 4
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 2
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Abstract
The application discloses a comprehensive power generation cost estimation method and an economic benefit estimation method for multi-coal co-firing. The comprehensive power generation cost estimation method comprises the following steps: acquiring fuel purchasing cost and coal blending cost of the fuel to be charged and environmental-friendly treatment cost of combustion products of the fuel to be charged, wherein the fuel to be charged at least comprises two coal types; obtaining benefits brought by comprehensive utilization of environmental-friendly treatment products of combustion products of fuel fed into the furnace; acquiring a blending combustion cost change correction coefficient relative to single coal combustion during combustion of the fuel fed into the furnace, wherein the blending combustion cost change correction coefficient is used for representing boiler efficiency and station service electricity rate during combustion of the fuel fed into the furnace and is relative to deviation during combustion of the single coal; based on the fuel purchasing cost, the coal blending cost, the environment-friendly treatment cost, the benefit and the blended firing cost change correction coefficient, the comprehensive power generation cost of the fuel fed into the furnace is calculated, so that the method can be used for estimating the power generation cost of the blended firing of multiple coal types.
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 estimation method for multi-coal blended combustion.
Background
Currently, as the power market is deepened and improved, in order to control the power generation cost, coal-fired power generation enterprises generally need to blend two or more kinds of coal for combustion, for example, relatively low-priced coal is blended into other kinds of coal for combustion power generation, so as to control the power generation cost. Accordingly, there is a need to provide a method of estimating the cost of power generation for multiple coal types of co-firing.
Disclosure of Invention
The comprehensive power generation cost estimation method and the economic benefit estimation method for the multi-coal blended combustion provided by the embodiment of the application can be used for estimating the power generation cost of the multi-coal blended 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 the fuel to be charged and environment-friendly treatment cost of combustion products of the fuel to be charged, wherein the fuel to be charged at least comprises two coal types;
obtaining benefits brought by comprehensive utilization of environmental-friendly treatment products of the combustion products of the fuel fed into the furnace;
acquiring a blending combustion cost change correction coefficient relative to single coal combustion during combustion of the fuel fed into the furnace, wherein the blending combustion cost change correction coefficient is used for representing boiler efficiency and plant power consumption during combustion of the fuel fed into the furnace and relative to deviation during combustion of the single coal;
and calculating the comprehensive power generation cost of the fuel charged into the furnace based on the fuel purchase cost, the coal blending cost, the environment-friendly treatment cost, the benefit and the blended firing cost change correction coefficient.
Preferably, the obtaining of the correction coefficient of the blending combustion cost variation in combustion of the fuel fed into the furnace relative to combustion of a single coal type specifically comprises:
respectively obtaining the furnace-entering fuel and the single coal, and the boiler efficiency and the station service power consumption when the furnace-entering fuel and the single coal are combusted under the same conditions;
and calculating the variation correction coefficient of the co-firing cost according to the boiler efficiency and the plant power consumption corresponding to the fuel fed into the furnace and the boiler efficiency and the plant power consumption corresponding to the single coal.
Preferably, the blending combustion cost change correction coefficient is calculated according to the boiler efficiency and the plant power consumption corresponding to the fuel fed into the furnace and the boiler efficiency and the plant power consumption corresponding to the single coal, and specifically comprises the following steps of calculating the blending combustion cost change correction coefficient according to the following formula:
wherein delta is the modification coefficient of the blended firing cost variation;
η b0 boiler efficiency for the single coal;
λ 0 the plant power consumption of the single coal type;
Δη b boiler efficiency for the charge fuel is relative to eta b0 Is a variable amount of (a);
delta lambda is the station service power of the fuel charged into the furnace relative to lambda 0 Is a variable amount of (a).
Preferably, the obtaining of the benefit brought by comprehensive utilization of the environmental protection treatment product of the combustion product of the fuel entering the furnace specifically comprises the following formula to calculate the benefit:
C S ＝P HL ×E HL +P ZL ×E ZL +P GL ×E GL ；
wherein C is S For the benefit, the unit is Yuan/ton standard coal;
P HL the unit of the comprehensive utilization amount of the fly ash for burning one ton of standard coal into the furnace is ton/ton of standard coal;
P ZL the unit of the comprehensive utilization amount of the bottom slag of the fuel fed into the furnace for burning one ton of standard coal is ton/ton of standard coal;
P GL the unit of the comprehensive utilization amount of gypsum for burning one ton of standard coal into the furnace is ton/ton of standard coal;
E HL the unit is yuan/ton for the comprehensive utilization unit of fly ash;
E ZL the unit is yuan/ton for the comprehensive utilization unit of the bottom slag;
E GL the unit is yuan/ton for the comprehensive utilization unit of gypsum.
Preferably, the comprehensive power generation cost of the fuel charged into the furnace is calculated based on the fuel purchasing cost, the coal blending cost, the environmental protection treatment cost, the benefit and the blended firing cost change correction coefficient, and specifically comprises the following formula:
C D ＝(C Z -C S )×(1+δ)；
wherein C is D The unit is Yuan/ton standard coal for the comprehensive power generation cost;
delta is the modification coefficient of the blended firing cost variation;
C S is the benefit;
C Z the unit is Yuan/ton standard coal which is the sum of the fuel purchasing cost, the coal blending cost and the environmental protection treatment cost.
Preferably, the obtaining the environmental protection treatment cost specifically includes: and obtaining the blended combustion denitration cost, the blended combustion desulfurization cost and the blended combustion ash disposal cost.
Preferably, the cost of the co-firing denitration is obtained by the following steps:
C TX ＝P TX ×E J3 +P XS ×E XS ；
wherein C is TX The unit of the blended combustion denitration cost is Yuan/ton standard coal;
P TX the amount of the denitration agent for environmental protection treatment of burning one ton of standard coal into the furnace is expressed as ton/ton of standard coal;
E J3 the unit is yuan/ton for the unit price of the denitration agent;
P XS the unit of water consumption for the denitration process of the fuel fed into the furnace for burning one ton of standard coal is ton/ton of standard coal;
E XS is the unit price of the denitration process water and per ton.
Preferably, the cost of desulfurization by co-firing is obtained by:
C TL ＝P TL1 ×E J1 +P TL2 ×E J2 +P LS ×E LS +P SG ×E SG ；
wherein C is TL The unit is Yuan/ton standard coal for the co-firing desulfurization cost;
P TL1 environmental protection treatment for burning one ton of standard coal into furnaceThe dosage of the desulfurizing agent in the furnace is ton/ton standard coal;
E J1 unit is unit price of the desulfurizing agent in the furnace, and unit is unit per ton;
P TL2 the dosage of the desulfurizing agent outside the furnace for environmental protection treatment of burning one ton of standard coal and charging the fuel into the furnace is expressed as ton/ton of standard coal;
E J2 the unit is yuan/ton for the unit price of the off-furnace desulfurizing agent;
P LS the unit of water consumption for the desulfurization process of burning one ton of standard coal and charging the standard coal into the outside of the fuel furnace is ton/ton;
E LS the unit is yuan/ton for the unit of the desulfurization process water outside the furnace;
P SG the unit of gypsum amount generated by wet desulphurization of one ton of standard coal burned into the outside of the fuel furnace is ton/ton of standard coal;
E SG the unit is yuan/ton for gypsum disposal and transportation.
Preferably, the blended ash disposal cost is obtained by:
wherein C is HZ Disposing cost for the blended combustion ash slag, wherein the unit is Yuan/ton standard coal;
P H the unit of the fly ash amount generated by burning one ton of standard coal into the furnace is ton/ton of standard coal;
P Z the unit of the bottom slag quantity generated by burning one ton of standard coal into the furnace is ton/ton of standard coal;
lambda is the fly ash humidification ratio;
E Y the unit of unit is yuan/ton for the disposal of fly ash and slag;
P ZS the water consumption of the fly ash humidifying process for burning one ton of standard coal into the furnace fuel is expressed as ton/ton of standard coal;
E ZS the unit of the process water for fly ash humidification 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 method for estimating the comprehensive power generation cost of the multi-coal co-firing provided by the embodiment of the application is used for acquiring the comprehensive power generation cost of the fuel fed into the furnace, wherein the fuel fed into the furnace at least comprises two coal types;
acquiring a second comprehensive power generation cost of single coal when the single coal is fed into the furnace for combustion under the same condition;
and calculating the economic benefit of the fuel fed into the furnace based on the comprehensive power generation cost and the second comprehensive power generation cost.
The above-mentioned at least one technical scheme that this application embodiment adopted can reach following beneficial effect:
by adopting the comprehensive power generation cost estimation method for multi-coal blending combustion provided by the embodiment of the application, the fuel purchasing cost, the coal blending cost and the environmental protection treatment cost for the combustion products of the fuel entering the furnace are obtained, the benefit brought by the comprehensive utilization of the environmental protection treatment products of the combustion products of the fuel entering the furnace is obtained, the blending combustion cost change correction coefficient relative to single coal blending combustion is obtained, and then 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 treatment cost, the benefit and the blending combustion cost change correction coefficient, so that the 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 embodiments of the application and together with the description serve to explain the application and do not constitute an undue limitation to the application. In the drawings:
fig. 1 is a specific flow chart of a method for estimating the comprehensive power generation cost of multi-coal co-firing according to an embodiment of the present application.
Detailed Description
For the purposes, technical solutions and advantages of the present application, the technical solutions of the present application will be clearly and completely described below with reference to specific embodiments of the present application and corresponding drawings. It will be apparent that the described embodiments are only some, but not all, of the embodiments of the present application. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.
The following describes in detail the technical solutions provided by the embodiments of the present application with reference to the accompanying drawings.
As previously indicated, coal-fired power generation enterprises generally need to mix two or more kinds of coal for combustion, such as mixing relatively low-priced coal into other kinds of coal for combustion power generation, so as to control the power generation cost. Accordingly, there is a need to provide a method of assessing the cost of power generation for multiple coal types of blended combustion.
Based on this, the embodiment of the application provides a comprehensive power generation cost estimation method for multi-coal co-firing, which can be used for solving the problems. As shown in fig. 1, the method comprises the steps of:
step S11: and obtaining the fuel purchasing cost of the fuel entering the furnace.
The fuel to be fed into the furnace comprises at least two kinds of coal, for example, two or more kinds of coal are doped, so that the fuel to be fed into the furnace is obtained, and the fuel to be fed into the furnace is combusted to generate electricity.
For the concrete way of obtaining the fuel purchase cost of the in-furnace fuel, the purchase cost of each coal type in the furnace can be calculated respectively, and summed up, so that the fuel purchase cost of the in-furnace fuel is calculated finally, for example, the fuel purchase cost of the in-furnace fuel can be calculated by the following formula:
in the calculation formula, C G The unit of the fuel purchasing cost for the fuel to be charged can be Yuan/ton standard coal.
n is the total number of coal types in the fuel being charged.
C iG In order to obtain the purchase unit price of the ith coal type in the fuel to be charged, the unit of the purchase unit price can be Yuan/ton of raw coalThe value of i ranges from 1 to n.
x i The raw coal blending combustion mass ratio of the ith coal type is 20%, 25% and the like for the fuel to be charged.
Q HM The unit of the low-heat value of the fuel which is fed into the furnace can be kilocalories per kilogram and the like.
N is a standard for converting raw coal into standard coal, for example, the value of N in China is usually 7000 kcal/kg.
For x i The size of (2) can be obtained by the following calculation formula:
wherein B is i Raw coal quality of the ith coal type is used as the fuel to be charged; b (B) ALL The total raw coal mass of the fuel to be charged can be generally obtained from the sum of the raw coal masses of the respective coal types.
Step S12: and obtaining the coal blending cost of the fuel fed into the furnace.
Because various coal types are involved in the fuel fed into the furnace, corresponding cost is brought when various coal types are blended, and the blending cost can be calculated by the following formula.
C PM ＝P PM ×N/Q HM
In the calculation formula, C PM The unit of the coal blending cost for the fuel fed into the furnace can be Yuan/ton standard coal.
P PM The unit of the unit coal is Yuan/ton raw coal.
As mentioned above, N is a standard for converting raw coal into standard coal, for example, the value of N in China is typically 7000 kcal/kg; q (Q) HM The unit of the low-heat value of the fuel which is fed into the furnace can be kilocalories per kilogram and the like.
Step S13: the environmental protection treatment cost for the combustion products of the fuel entering the furnace is obtained.
In practical applications, the combustion products of the in-furnace fuel mainly comprise fly ash, slag, flue gas and the like, so that the environmental treatment thereof can comprise treatment of the fly ash, slag, flue gas and the like, and for example, the environmental treatment cost can comprise the cost of co-combustion denitration, the cost of co-combustion desulfurization and the cost of co-combustion ash disposal.
In the denitration process, because a denitration agent and denitration process water are needed, the cost of the mixed combustion denitration mainly comprises the cost of the denitration agent and the denitration process water, and the calculation formula is as follows:
C TX ＝P TX ×E J3 +P XS ×E XS ；
in the calculation formula, C TX The unit of the denitration catalyst is Yuan/ton standard coal. P (P) TX The unit of the dosage of the denitration agent used for environmental protection treatment of the fuel fed into the furnace for burning one ton of standard coal can be ton/ton of standard coal. E (E) J3 The unit of the denitration agent may be yuan/ton. P (P) XS The unit of water consumption for the denitration process of the fuel fed into the furnace for burning one ton of standard coal can be ton/ton of standard coal. E (E) XS The unit of the denitration process water is meta/ton.
The disposal cost of the blended cinder includes the disposal cost of the fly ash, slag and the like, and since a certain amount of humidifying process water is required to be sprayed into the fly ash to increase the humidity of the fly ash and finally the fly ash, slag and the like are required to be transported outwards, the calculation formula thereof mainly consists of the cost of humidifying the fly ash, the transportation cost of the fly ash, slag and the like, and the blended cinder disposal cost can be calculated by adopting the following formula:
in the calculation formula, C HZ The unit of the treatment cost for the blended burned ash slag can be Yuan/ton standard coal. P (P) H The unit of the fly ash produced for burning one ton of standard coal into the furnace can be ton/ton of standard coal. P (P) Z The amount of slag (also called bottom slag) produced for burning one ton of standard coal into the furnace fuel can be ton/ton of standard coal. Lambda is the fly ash wetting ratio. E (E) Y The unit of the unit for the disposal of fly ash and slag can be yuan per ton. P (P) ZS The unit of the water consumption for the fly ash humidifying process for burning one ton of standard coal into the furnace can be ton/ton of standard coal. E (E) ZS The 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 can be generally included, and in the out-of-furnace desulfurization process, out-of-furnace desulfurization process water may be needed, and the produced gypsum is transported out, so when only the in-furnace desulfurization process is included, the co-firing desulfurization cost is specifically the in-furnace desulfurizing agent cost, which can be calculated from the in-furnace desulfurizing agent dosage and the unit price of the in-furnace desulfurizing agent; when only the external desulfurization process is included, the co-firing desulfurization cost is specifically composed of the external desulfurization agent cost, the external desulfurization process water cost and the gypsum external transportation cost, wherein the external desulfurization agent cost is calculated by the external desulfurization agent dosage and the unit price of the external desulfurization agent, the external desulfurization process water cost is calculated by the external desulfurization process water consumption and the unit price of the external desulfurization process water, and the gypsum external transportation cost is calculated by the produced gypsum quantity and the transportation unit price thereof.
In particular, when the in-furnace desulfurization process and the out-of-furnace desulfurization process are included at the same time, the co-firing desulfurization cost is composed of four parts of in-furnace desulfurizing agent cost, out-of-furnace desulfurization process water cost and gypsum out-of-operation cost, and the calculation formula can be as follows:
C TL ＝P TL1 ×E J1 +P TL2 ×E J2 +P LS ×E LS +P SG ×E SG ；
in the calculation formula, C TL The unit of the desulfurization cost can be unit per ton of standard coal for the co-combustion desulfurization in the process of simultaneously comprising the in-furnace desulfurization process and the out-furnace desulfurization process. P (P) TL1 The unit of the dosage of the desulfurizing agent in the furnace for environmental protection treatment of burning one ton of standard coal into the furnace can be ton/ton of standard coal. E (E) J1 The unit of the desulfurization agent in the furnace is unit price, and the unit can be yuan/ton. P (P) TL2 The unit of the dosage of the desulfurizing agent outside the furnace for environmental protection treatment of burning one ton of standard coal into the furnace can be ton/ton of standard coal. E (E) J2 The unit of the desulfurization agent outside the furnace can be +.Tons. P (P) LS The unit of water consumption for the desulfurization process of burning one ton of standard coal into the outside of the fuel furnace can be ton/ton of standard coal. E (E) LS The unit of the desulfurization process water is unit price of the desulfurization process water outside the furnace, and the unit of the desulfurization process water can be yuan/ton. P (P) SG The unit of the gypsum amount generated by wet desulphurization outside the fuel furnace for burning one ton of standard coal can be ton/ton of standard coal. E (E) SG The unit of the unit is yuan/ton for gypsum disposal and export unit.
Similarly, when only the in-furnace desulfurization process is involved, the cost of the co-fired desulfurization is specifically the cost of the in-furnace desulfurizing agent, which can be defined by P TL1 ×E J1 And (5) calculating to obtain the product. When only the off-furnace desulfurization process is involved, the co-firing desulfurization cost is composed of the off-furnace desulfurizing agent cost, the off-furnace desulfurization process water cost, and the gypsum off-stream cost, which can be made up of P TL2 ×E J2 +P LS ×E LS +P SG ×E SG And (5) calculating to obtain the product.
Step S14: and obtaining the benefits brought by comprehensive utilization of environmental-friendly treatment products of combustion products of the fuel fed into the furnace.
In practical application, the benefits mainly comprise gypsum comprehensive utilization benefits, bottom slag comprehensive utilization benefits, fly ash comprehensive utilization benefits and the like. The comprehensive utilization benefit of the bottom slag can be calculated by the comprehensive utilization unit price of the bottom slag and the comprehensive utilization amount of the bottom slag, and the comprehensive utilization benefit of the fly ash can be calculated by 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:
C S ＝P HL ×E HL +P ZL ×E ZL +P GL ×E GL ；
in the calculation formula, C S For the calculated benefit, the unit may be Yuan/ton of standard coal. P (P) HL The unit of the comprehensive utilization amount of the fly ash for burning one ton of standard coal into the furnace can be ton/ton of standard coal. P (P) ZL The unit of the comprehensive utilization amount of the bottom slag for burning one ton of standard coal into the furnace can be ton/ton of standard coal. P (P) GL The unit of the comprehensive utilization amount of gypsum for burning one ton of standard coal into the furnace can be ton/ton of standard coal. E (E) HL The unit of the unit per ton of the fly ash is the unit price of the comprehensive utilization of the fly ash. E (E) ZL The unit of the comprehensive utilization unit price of the bottom slag can be yuan/ton. E (E) GL The unit of the unit is yuan/ton for the comprehensive utilization unit of gypsum.
Step S15: and obtaining a correction coefficient of the variation of the blending combustion cost when the fuel is combusted relative to the single coal.
The co-combustion cost change correction coefficient is used for representing boiler efficiency and station service electricity rate when the fuel is combusted, and is relative to deviation when single coal is combusted.
For example, the fuel can be fired under certain conditions (such as primary air coal, secondary air quantity and the like) to measure the corresponding boiler efficiency and plant power consumption, and then under the same conditions, the single coal is fired to measure the corresponding boiler efficiency and plant power consumption. And then calculating to obtain the variation correction coefficient of the blended firing cost according to the boiler efficiency and the plant power consumption corresponding to the fuel fed into the furnace and the boiler efficiency and the plant power consumption corresponding to the single coal. The single coal type can be any single coal type in the fuel fed into the furnace, or can be designed coal type for the boiler.
For example, the blending firing cost variation correction coefficient may be calculated using the following formula:
in the calculation formula, δ is a correction coefficient for the variation of the firing cost. η (eta) b0 The boiler efficiency for this single coal type. Lambda (lambda) 0 The plant power consumption of the single coal type. Δη b Boiler efficiency for in-furnace fuel relative to eta b0 Can be determined by the boiler efficiency and eta of the fuel fed into the furnace b0 Is calculated from the difference between (a) and (b). Delta lambda is the station service power of the fuel charged in the furnace relative to lambda 0 Can be controlled by the station service power and lambda of the fuel fed into the furnace 0 Is calculated from the difference between (a) and (b).
Step S16: and calculating the comprehensive power generation cost of the fuel charged into the furnace based on the obtained fuel purchasing cost, the coal blending cost, the environment-friendly treatment cost, the benefit and the blended firing cost change correction coefficient.
In practical application, the comprehensive power generation cost can be calculated by the following calculation formula:
C D ＝(C Z -C S )×(1+δ)；
in the calculation formula, C D The unit of the calculated comprehensive power generation cost can be Yuan/ton standard coal. Delta is the correction coefficient of the variation of the firing cost calculated in the step S15. C (C) S The benefit calculated in step S14 is obtained. C (C) Z Is that
The fuel purchasing cost of the in-and-out fuel can be calculated through the step S11, the coal blending cost of the in-and-out fuel can be calculated through the step S12, the environmental treatment cost can be calculated through the step S13, and then the total cost C can be calculated by summing the three Z The unit can be Yuan/ton standard coal.
In the total cost C Z The fuel purchasing cost of the fuel in the furnace can be calculated in the step S11, and the additional cost of the fuel in the furnace comprises the coal blending cost and the environmental protection treatment cost which are calculated in the step S12 and the step S13 respectively, so that the cost in the aspects of raw materials, coal blending, environmental protection treatment and the like can be comprehensively considered, and the total cost calculation is more comprehensive and accurate.
By adopting the comprehensive power generation cost estimation method for multi-coal blending combustion provided by the embodiment of the application, the fuel purchasing cost, the coal blending cost and the environmental protection treatment cost for the combustion products of the fuel entering the furnace are obtained, the benefit brought by the comprehensive utilization of the environmental protection treatment products of the combustion products of the fuel entering the furnace is obtained, the blending combustion cost change correction coefficient relative to single coal blending combustion is obtained, and then 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 treatment cost, the benefit and the blending combustion cost change correction coefficient, so that the method can be used for estimating the power generation cost of multi-coal blending combustion.
In addition, in the method, the fuel purchase cost, the coal blending cost and the environmental protection treatment cost are calculated when the cost is calculated, and the benefit brought by the comprehensive utilization of environmental protection treatment products and the blending burning cost change correction coefficient when the fuel is burnt in combination with the furnace, compared with the single coal, are calculated, so that the estimated power generation cost is combined with the total cost, the total benefit and the blending burning cost change correction coefficient, and the power generation cost is more accurate.
In the above steps, the execution order of steps S11 to S15 is not limited, and for example, the correction coefficient of the variation of the baking cost may be calculated by executing step S15, then steps S11 to S14 may be executed, the environmental-friendly processing cost may be calculated by executing step S13, then other steps may be executed, of course, steps S11 to S15 may be executed in other execution orders, and after step S11 to S15 are executed, step S16 may be executed based on the execution result.
In practical application, after the comprehensive power generation cost of the multi-coal blended combustion is estimated by the method, the economic benefit of the multi-coal blended combustion is usually estimated by comparing the comprehensive power generation cost with a single coal. Therefore, the application can also provide an economic benefit evaluation method for multi-coal co-firing on the basis of the above-mentioned multi-coal co-firing comprehensive power generation cost evaluation method, which can firstly obtain the comprehensive power generation cost of the in-furnace fuel through the multi-coal co-firing comprehensive power generation cost evaluation method provided by the embodiment of the application, wherein the in-furnace fuel at least comprises two coal types; then, obtaining the second comprehensive power generation cost of the single coal when the single coal is fed into the furnace for combustion under the same condition, wherein the same condition refers to the same feeding combustion condition as feeding fuel, such as the same primary air coal quantity, the same secondary air quantity and the like; then, based on the integrated power generation cost and the second integrated power generation cost, the economic benefit of the fuel charged into the furnace is calculated.
For example, the economic benefit can be calculated by the following calculation formula:
ΔC＝C D -C 0
in the calculation formula, delta C is economic benefit, and the unit of delta C can be Yuan/ton standard coal. C (C) D The unit of the integrated power generation cost can be Yuan/ton standard coal. C (C) 0 For the second comprehensive power generation cost, the unit can be Yuan/ton standard coal.
For C 0 The fuel purchasing cost of the single coal type is calculated according to the unit price and the dosage of the single coal type; then, the environmental-friendly treatment cost of the combustion products is calculated, and the environmental-friendly treatment cost can also include the cost of co-firing denitration, the cost of co-firing desulfurization, the cost of co-firing ash disposal, and the like as shown in step S13; then, the benefit brought by the comprehensive utilization of the environmental-friendly treatment product is calculated, and the calculation process of the benefit can also be shown as step S14. After calculating the fuel purchasing cost, the environmental treatment cost and the income, the C can be calculated by the three 0 。
It should 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 one … …" does not exclude the presence of other like elements in a process, method, article or apparatus that comprises an element.
The foregoing is merely exemplary of the present application and is not intended to limit the present application. Various modifications and changes may be made to the present application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc. which are within the spirit and principles of the present application are intended to be included within the scope of the claims of the present application.
Claims (7)
1. The comprehensive power generation cost estimation method for the mixed combustion of multiple coal types is characterized by comprising the following steps of:
acquiring fuel purchasing cost and coal blending cost of the fuel to be charged and environment-friendly treatment cost of combustion products of the fuel to be charged, wherein the fuel to be charged at least comprises two coal types;
obtaining benefits brought by comprehensive utilization of environmental-friendly treatment products of the combustion products of the fuel fed into the furnace;
acquiring a blending combustion cost change correction coefficient relative to single coal combustion during combustion of the fuel fed into the furnace, wherein the blending combustion cost change correction coefficient is used for representing boiler efficiency and plant power consumption during combustion of the fuel fed into the furnace and relative to deviation during combustion of the single coal;
calculating the comprehensive power generation cost of the fuel charged into the furnace based on the fuel purchase cost, the coal blending cost, the environment-friendly treatment cost, the benefit and the blended firing cost change correction coefficient;
the comprehensive power generation cost of the fuel in the furnace is calculated based on the fuel purchase cost, the coal blending cost, the environment-friendly treatment cost, the benefit and the blended firing cost change correction coefficient, and specifically comprises the following formula:
C D ＝(C Z -C S )×(1+δ)；
wherein C is D The unit is Yuan/ton standard coal for the comprehensive power generation cost;
delta is the modification coefficient of the blended firing cost variation;
C S is the benefit;
C Z the unit is Yuan/ton standard coal which is the sum of the fuel purchasing cost, the coal blending cost and the environmental protection treatment cost;
the method for obtaining the correction coefficient of the blended combustion cost variation in combustion of the fuel fed into the furnace relative to the combustion of a single coal type specifically comprises the following steps:
respectively obtaining the furnace-entering fuel and the single coal, and the boiler efficiency and the station service power consumption when the furnace-entering fuel and the single coal are combusted under the same conditions;
calculating the variation correction coefficient of the co-firing cost according to the boiler efficiency and the plant power consumption corresponding to the fuel fed into the furnace and the boiler efficiency and the plant power consumption corresponding to the single coal;
the method comprises the steps of calculating the variation correction coefficient of the blending firing cost according to the boiler efficiency and the plant power consumption corresponding to the fuel fed into the furnace and the boiler efficiency and the plant power consumption corresponding to the single coal, and specifically comprises the following steps of calculating the variation correction coefficient of the blending firing cost according to the following formula:
wherein delta is the modification coefficient of the blended firing cost variation;
η b0 boiler efficiency for the single coal;
λ 0 the plant power consumption of the single coal type;
Δη b boiler efficiency for the charge fuel is relative to eta b0 Is a variable amount of (a);
delta lambda is the station service power of the fuel charged into the furnace relative to lambda 0 Is a variable amount of (a).
2. The method of claim 1, wherein obtaining the benefit from the comprehensive utilization of the environmental treatment products of the combustion products of the incoming fuel comprises calculating the benefit by the following formula:
C S ＝P HL ×E HL +P ZL ×E ZL +P GL ×E GL ；
wherein C is S For the benefit, the unit is Yuan/ton standard coal;
P HL the unit of the comprehensive utilization amount of the fly ash for burning one ton of standard coal into the furnace is ton/ton of standard coal;
P ZL the unit of the comprehensive utilization amount of the bottom slag of the fuel fed into the furnace for burning one ton of standard coal is ton/ton of standard coal;
P GL the unit of the comprehensive utilization amount of gypsum for burning one ton of standard coal into the furnace is ton/ton of standard coal;
E HL is the unit of comprehensive utilization unit of fly ashIs yuan/ton;
E ZL the unit is yuan/ton for the comprehensive utilization unit of the bottom slag;
E GL the unit is yuan/ton for the comprehensive utilization unit of gypsum.
3. The method of claim 1, wherein obtaining the environmental treatment cost specifically comprises: and obtaining the blended combustion denitration cost, the blended combustion desulfurization cost and the blended combustion ash disposal cost.
4. The method of claim 3, wherein the co-firing denitration cost is obtained by:
C TX ＝P TX ×E J3 +P XS ×E XS ；
wherein C is TX The unit of the blended combustion denitration cost is Yuan/ton standard coal;
P TX the amount of the denitration agent for environmental protection treatment of burning one ton of standard coal into the furnace is expressed as ton/ton of standard coal;
E J3 the unit is yuan/ton for the unit price of the denitration agent;
P XS the unit of water consumption for the denitration process of the fuel fed into the furnace for burning one ton of standard coal is ton/ton of standard coal;
E XS is the unit price of the denitration process water and per ton.
5. The method of claim 3, wherein the co-firing desulfurization cost is obtained by:
C TL ＝P TL1 ×E J1 +P TL2 ×E J2 +P LS ×E LS +P SG ×E SG ；
wherein C is TL The unit is Yuan/ton standard coal for the co-firing desulfurization cost;
P TL1 the dosage of the desulfurizing agent in the furnace for environmental protection treatment of burning one ton of standard coal and charging the fuel into the furnace is expressed as ton/ton of standard coal;
E J1 single unit of desulfurizing agent in the furnaceValence in yuan/ton;
P TL2 the dosage of the desulfurizing agent outside the furnace for environmental protection treatment of burning one ton of standard coal and charging the fuel into the furnace is expressed as ton/ton of standard coal;
E J2 the unit is yuan/ton for the unit price of the off-furnace desulfurizing agent;
P LS the unit of water consumption for the desulfurization process of burning one ton of standard coal and charging the standard coal into the outside of the fuel furnace is ton/ton;
E LS the unit is yuan/ton for the unit of the desulfurization process water outside the furnace;
P SG the unit of gypsum amount generated by wet desulphurization of one ton of standard coal burned into the outside of the fuel furnace is ton/ton of standard coal;
E SG the unit is yuan/ton for gypsum disposal and transportation.
6. The method of claim 3 wherein the blended ash disposal cost is obtained by:
wherein C is HZ Disposing cost for the blended combustion ash slag, wherein the unit is Yuan/ton standard coal;
P H the unit of the fly ash amount generated by burning one ton of standard coal into the furnace is ton/ton of standard coal;
P Z the unit of the bottom slag quantity generated by burning one ton of standard coal into the furnace is ton/ton of standard coal;
lambda is the fly ash humidification ratio;
E Y the unit of unit is yuan/ton for the disposal of fly ash and slag;
P ZS the water consumption of the fly ash humidifying process for burning one ton of standard coal into the furnace fuel is expressed as ton/ton of standard coal;
E ZS the unit of the process water for fly ash humidification is yuan/ton.
7. The method for evaluating the economic benefit of multi-coal co-firing is characterized by comprising the following steps of:
the method of any one of claims 1 to 6, wherein the comprehensive power generation cost of the fuel in the furnace is obtained, and the fuel in the furnace at least comprises two coal types;
acquiring a second comprehensive power generation cost of single coal when the single coal is fed into the furnace for combustion under the same condition;
and calculating the economic benefit of the fuel fed into the furnace based on the comprehensive power generation cost and the second comprehensive power generation cost.
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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 |
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