CN117669858A - Quantitative analysis method for synergistic pollution and carbon reduction of coal-fired power plant - Google Patents
Quantitative analysis method for synergistic pollution and carbon reduction of coal-fired power plant Download PDFInfo
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- 230000002195 synergetic effect Effects 0.000 title claims abstract description 74
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 55
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Abstract
The invention relates to the technical field of atmospheric pollution, in particular to a quantitative analysis method for synergistic pollution reduction and carbon reduction of a coal-fired power plant, which comprises the steps of determining the types and emission sources of atmospheric pollutants and greenhouse gases of the coal-fired power plant; determining the emission of each atmosphere pollutant and greenhouse gas before and after the emission improvement measures are applied, and correspondingly converting the emission into comprehensive atmosphere pollutant emission equivalent and carbon dioxide emission equivalent respectively; according to the comprehensive atmospheric pollutant emission equivalent of the atmospheric pollutants and the carbon dioxide emission equivalent of the greenhouse gases, respectively calculating the emission reduction of the emission reduction measures on the atmospheric pollutants and the greenhouse gases, and calculating the synergistic effect coefficient; and carrying out quantitative evaluation analysis on the synergistic pollution and carbon reduction according to the emission reduction amount of each atmosphere pollutant and greenhouse gas and the synergistic effect coefficient. By using the quantitative analysis method, the synergistic effect of pollution reduction and carbon reduction is quantitatively analyzed, so that the pollutant emission control level of the coal-fired power plant can be effectively improved, and the cost is saved.
Description
Technical Field
The invention relates to the technical field of atmospheric pollution, in particular to a quantitative analysis method for synergistic pollution reduction and carbon reduction of a coal-fired power plant.
Background
The development of green economy has become a common knowledge for people gradually along with the concept of environmental protection. The coal-fired power plant is one of main emission sources of pollutants, and faces the great challenges of production power conservation, basic regulation action power supply transformation and pollution reduction and carbon reduction, so that how to reduce carbon emission while ensuring that pollutant emission of the coal-fired power plant reaches a control level is a problem to be solved by the coal-fired power plant, however, at present, emission control of pollutants and carbon dioxide by the coal-fired power plant is realized by changing the operation condition of a unit and adding emission reduction equipment, and the like, but quantitative evaluation analysis on the integral action of the adopted emission reduction measures cannot be performed, so that emission reduction is possibly realized for certain pollutants, and emission increase is realized for carbon dioxide.
Therefore, a quantitative analysis method for the cooperative pollution reduction and carbon reduction of the coal-fired power plant is needed, so that the cooperative control effect of different emission reduction measures is scientifically evaluated and the optimal measure combination is screened through quantitative analysis of the cooperative pollution reduction and carbon reduction efficiency, and the pollutant standard emission is realized while the cost is controlled and the carbon emission is reduced.
Disclosure of Invention
The invention aims to solve the problems that emission control of pollutants in the existing coal-fired power plant is realized by changing the operation condition of a unit, adding emission reduction equipment and the like, and the overall effect of adopted emission reduction measures cannot be quantitatively evaluated and analyzed, so that emission reduction of certain pollutants is possible and emission increase of carbon dioxide is realized, and provides a quantitative analysis method for collaborative pollution reduction and carbon reduction of the coal-fired power plant.
In order to achieve the above purpose, the invention provides a quantitative analysis method for collaborative pollution and carbon reduction of a coal-fired power plant, which comprises the following steps:
s1, determining the types and emission sources of atmospheric pollutants and greenhouse gases of a coal-fired power plant according to the actual production situation of the coal-fired power plant;
s2, determining the emission amount of each atmosphere pollutant and greenhouse gas before and after the emission improvement measures are applied according to the types and emission sources of the atmosphere pollutant and the greenhouse gas of the coal-fired power plant;
s3, converting the emission of each atmosphere pollutant before and after the emission reduction measures are applied into comprehensive atmosphere pollutant emission equivalent, and converting the emission of each greenhouse gas into carbon dioxide emission equivalent;
s4, calculating the emission reduction amount of the emission reduction measures on the air pollutants and the greenhouse gases respectively according to the comprehensive air pollutant emission equivalent of the air pollutants and the carbon dioxide emission equivalent of the greenhouse gases before and after the emission reduction measures are applied, and calculating the synergistic effect coefficient;
s5, carrying out quantitative evaluation analysis on the synergistic pollution reduction and carbon reduction according to the emission reduction and the synergistic effect coefficient of each atmosphere pollutant and greenhouse gas.
Preferably, in step S1, the emission source of the atmospheric pollutants of the coal-fired power plant includes a combustion process of a boiler unit of the coal-fired power plant, and the types of the atmospheric pollutants of the coal-fired power plant include conventional pollutants and unconventional pollutants;
the emission sources of the greenhouse gases of the coal-fired power plant comprise the combustion process of a boiler unit of the coal-fired power plant, the wet desulfurization process and the conversion of outsourced power, and the types of the greenhouse gases of the coal-fired power plant comprise CO 2 And N 2 O。
Preferably, the conventional contaminant comprises SO 2 NOx and soot; the saidUnconventional contaminants include ammonia, SO 3 Mercury and its compounds, lead and its compounds, and cadmium and its compounds.
Preferably, in step S2, the determining the emission amount of each of the atmospheric pollutants and the greenhouse gases before and after the emission improvement measure is applied specifically includes:
according to the emission concentration, the flue gas amount, the flue gas temperature, the flue gas moisture content and the oxygen content in the flue gas of each atmosphere pollutant and greenhouse gas, under the condition of 6% converted oxygen on a dry basis in a standard state, the emission amount of each atmosphere pollutant and greenhouse gas before and after the emission adding and subtracting measures is calculated based on an emission amount unit.
Preferably, the discharge amount unit includes:
E i ＝C i ×Q×1000000；
E j ＝C j ×Q×1000000；
wherein E is i The emission amount of the ith atmospheric pollutants is kg/h; e (E) j The emission amount of the j-th greenhouse gas is kg/h; c (C) i The discharge concentration of the ith atmospheric pollutant is expressed in mg/m 3 ；C j The emission concentration of the j-th greenhouse gas is mg/m 3 The method comprises the steps of carrying out a first treatment on the surface of the Q is smoke amount, and the unit is m 3 /h；C i ' is the emission concentration of the ith atmospheric pollutant under the actual working condition, and the unit is mg/m 3 ；C j ' j-th greenhouse gas inThe emission concentration under the actual working condition is in mg/m 3 ；The oxygen content in the flue gas is expressed as a unit; />The oxygen content in the flue gas under the actual working condition is shown in the unit of; t is the temperature of the flue gas, and the unit is the temperature; p (P) 0 The local atmospheric pressure is Ps, the flue gas static pressure is expressed as Pa; x is X sw The unit is the moisture content of the flue gas; q' is the smoke quantity under the actual working condition, and the unit is m 3 /h。
Preferably, in step S3, the converting the emission amount of each of the atmospheric pollutants before and after the emission reduction measures are applied into a comprehensive atmospheric pollutant emission equivalent, and the converting the emission amount of each of the greenhouse gases into a carbon dioxide emission equivalent specifically includes:
based on the conversion unit, the emission amount of each atmosphere pollutant before and after the emission reduction measures are applied is converted into comprehensive atmosphere pollutant emission equivalent, and the emission amount of each greenhouse gas is converted into carbon dioxide emission equivalent.
Preferably, the conversion unit includes:
E LAP,i ＝α i ×E i ；
E GHG,j ＝α j ×E j ；
wherein E is LAP,i Converting the emission amount of the ith atmospheric pollutant into the emission equivalent of the comprehensive atmospheric pollutant, wherein the unit is kg/h;
E GHG,j converting the emission amount of the j-th greenhouse gas into the emission equivalent of carbon dioxide, wherein the unit is kg/h;
a i to convert the emission of the ith atmospheric pollutant into a conversion coefficient of the emission equivalent of the comprehensive atmospheric pollutant;
a j to convert the emission of the j-th greenhouse gas into a conversion factor of carbon dioxide emission equivalent.
Preferably, the conversion coefficient a of atmospheric pollutants i The method specifically comprises the following steps:SO 2 and NOx isSO 3 Is->Ammonia isSmoke dust->Mercury and its compound are->Lead and its compound>Cadmium and its compound>
Calculation coefficient a of greenhouse gases j The method specifically comprises the following steps: CO 2 Is 1, N 2 O is 265.
Preferably, in step S4, the calculating emission reduction amounts of the emission reduction measures on the respective air pollutants and greenhouse gases, and calculating the synergistic effect coefficient specifically includes:
respectively calculating the emission reduction amount of the emission reduction measures on the atmospheric pollutants and the greenhouse gases based on the emission reduction and synergistic coefficient units, and calculating the synergistic effect coefficient;
wherein, emission reduction and synergy coefficient unit includes:
ICER LAP,m,i ＝E LAP,m,i,0 -E LAP,m,i,l ；
ICER GHG,m,j ＝E GHG,m,j,0 -E GHG,m,j,l ；
wherein, ICER LAP,m,i For the ith air pollutant in the m-th emission reduction measureThe unit of the emission reduction of (2) is kg/h;
ICER GHG,m,j the emission reduction of the jth greenhouse gas is carried out for the mth emission reduction measure, and the unit is kg/h;
E LAP,m,i,0 the comprehensive atmospheric pollutant emission equivalent of the ith atmospheric pollutant before the implementation of the mth emission reduction measure is carried out is expressed as kg/h;
E LAP,m,i,l the comprehensive atmospheric pollutant emission equivalent of the ith atmospheric pollutant after the implementation of the mth emission reduction measure is expressed as kg/h;
E GHG,m,j,0 carbon dioxide emission equivalent of the jth greenhouse gas before the mth emission reduction measure is implemented is expressed in kg/h;
E GHG,m,j,l carbon dioxide emission equivalent of the jth greenhouse gas after the mth emission reduction measure is implemented is expressed as kg/h;
Els i/j is the synergistic coefficient of the ith atmospheric pollutant and the jth greenhouse gas.
Preferably, in step S5, the performing a quantitative evaluation analysis of the synergistic pollution reduction and carbon reduction according to the emission reduction amounts of the atmospheric pollutants and the greenhouse gases and the synergistic effect coefficient specifically includes:
when ICER LAP,m,i ≥0，ICER GHG,m,j ≥0，Els i/j When the emission reduction is more than 1, the emission reduction effect on the atmospheric pollutants is greater than that of greenhouse gases;
when ICER LAP,m,i ≥0，ICER GHG,m,j ≥0，Els i/j When=1, the emission reduction effect is equal to the emission reduction effect of greenhouse gases by synergy emission reduction on the atmospheric pollutants;
when ICER LAP,m,i ≥0，ICER GHG,m,j ≥0，0＜Els i/j When the emission reduction is less than 1, the emission reduction effect on the atmospheric pollutants is smaller than that of greenhouse gases in a synergistic way;
when ICER LAP,m,i ≥0，ICER GHG,m,j ≥0，Els i/j When < 0, this situation does not exist;
when ICER LAP,m,i ≥0，ICER GHG,m,j ＜0，Els i/j When 0 or more, the situation does not exist；
When ICER LAP,m,i ≥0，ICER GHG,m,j ＜0，Els i/j When the total amount of the components is less than 0, no synergistic effect exists, the emission of atmospheric pollutants is reduced, and the emission of greenhouse gases is increased;
when ICER LAP,m,i ＜0，ICER GHG,m,j ≥0，Els i/j When 0 or more, the situation does not exist;
when ICER LAP,m,i ＜0，ICER GHG,m,j ≥0，Els i/j When the total amount of the components is less than 0, no synergistic effect exists, the emission of atmospheric pollutants is increased, and the emission of greenhouse gases is reduced;
when ICER LAP,m,i ＜0，ICER GHG,m,j ＜0，Els i/j When the total emission is more than 1, the emission increasing effect on the atmospheric pollutants is larger than that of greenhouse gases;
when ICER LAP,m,i ＜0，ICER GHG,m,j ＜0，Els i/j When the total emission is equal to 1, the emission increasing effect of the total emission to the atmospheric pollutants is equal to that of greenhouse gases;
when ICER LAP,m,i ＜0，ICER GHG,m,j ＜0，0＜Els i/j When the total emission is less than 1, the emission enhancement effect of the total emission enhancement agent on the atmospheric pollutants is smaller than that of greenhouse gases;
when ICER LAP,m,i ＜0，ICER GHG,m,j ＜0，Els i/j When < 0, this situation does not exist.
According to the technical scheme, the quantitative analysis method based on the collaborative pollution reduction and carbon reduction of the coal-fired power plant is characterized in that the types and emission sources of the atmospheric pollutants and the greenhouse gases of the coal-fired power plant are determined according to the actual production condition of the coal-fired power plant, the emission amounts of the atmospheric pollutants and the greenhouse gases before and after the emission reduction measures are determined according to the types and the emission sources of the atmospheric pollutants and the greenhouse gases of the coal-fired power plant, the emission amounts of the atmospheric pollutants before and after the emission reduction measures are further converted into comprehensive atmospheric pollutant emission equivalent, the emission amounts of the greenhouse gases are converted into carbon dioxide emission equivalent, the emission amount of at least one emission reduction measure for the atmospheric pollutants and the greenhouse gases is calculated according to the carbon dioxide emission equivalent of the comprehensive atmospheric pollutants before and after the emission reduction measures, and the synergistic effect coefficient is calculated, and the quantitative evaluation and the collaborative pollution reduction and carbon reduction analysis of the collaborative pollution reduction are performed according to the emission reduction amounts of the atmospheric pollutants and the greenhouse gases and the synergistic effect coefficient; the method can effectively improve the pollutant emission control level of the coal-fired power plant in practical application, and realize the cooperative emission of atmospheric pollutants and greenhouse gases, thereby reducing the influence on the coal-fired power plant to the greatest extent and effectively saving the treatment cost while ensuring that the pollutant emission reaches the standard.
Drawings
FIG. 1 is a flow chart of a quantitative analysis method for collaborative pollution and carbon reduction of a coal-fired power plant.
Detailed Description
The following describes the detailed implementation of the embodiments of the present invention with reference to the drawings. It should be understood that the detailed description and specific examples, while indicating and illustrating the invention, are not intended to limit the invention.
In the description of the present application, the terms "first", "second" are used for descriptive purposes only and are not to be construed as indicating relative importance or implicitly indicating the number of technical features indicated. Thus, unless otherwise indicated, features defining "first", "second" may include one or more such features either explicitly or implicitly; the meaning of "plurality" is two or more. The term "comprises," "comprising," and any variations thereof, are intended to cover a non-exclusive inclusion, a possible presence or addition of one or more other features, elements, components, and/or combinations thereof.
Furthermore, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; either directly or indirectly through intermediaries, or in communication with each other. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art as the case may be.
The invention provides a quantitative analysis method for collaborative pollution reduction and carbon reduction of a coal-fired power plant, which is shown in fig. 1 and comprises the following steps:
s1, determining the types and emission sources of atmospheric pollutants and greenhouse gases of a coal-fired power plant according to the actual production situation of the coal-fired power plant;
s2, determining the emission amount of each atmosphere pollutant and greenhouse gas before and after the emission improvement measures are applied according to the types and emission sources of the atmosphere pollutant and the greenhouse gas of the coal-fired power plant;
s3, converting the emission of each atmosphere pollutant before and after the emission reduction measures are applied into comprehensive atmosphere pollutant emission equivalent, and converting the emission of each greenhouse gas into carbon dioxide emission equivalent;
s4, calculating the emission reduction amount of the emission reduction measures on the air pollutants and the greenhouse gases respectively according to the comprehensive air pollutant emission equivalent of the air pollutants and the carbon dioxide emission equivalent of the greenhouse gases before and after the emission reduction measures are applied, and calculating the synergistic effect coefficient; the emission reduction measures can be one or more when the emission reduction measures are calculated for reducing the emission of various atmospheric pollutants and greenhouse gases and calculating the synergistic effect coefficient.
S5, carrying out quantitative evaluation analysis on the synergistic pollution reduction and carbon reduction according to the emission reduction and the synergistic effect coefficient of each atmosphere pollutant and greenhouse gas.
According to the technical scheme, based on the quantitative analysis method for the cooperative pollution and carbon reduction of the coal-fired power plant, the pollutant emission control level of the coal-fired power plant can be effectively improved in practical application, and the cooperative emission of atmospheric pollutants and greenhouse gases is realized, so that the influence on the coal-fired power plant is reduced to the greatest extent while the pollutant emission is ensured to reach the standard, and the treatment cost is effectively saved.
In the quantitative analysis method for the collaborative pollution reduction and carbon reduction of the coal-fired power plant, in the preferred condition, in the step S1, the emission source of the atmospheric pollutants of the coal-fired power plant comprises the combustion process of a boiler unit of the coal-fired power plant, and the types of the atmospheric pollutants of the coal-fired power plant comprise conventional pollutants and unconventional pollutants; coal burningThe emission sources of the greenhouse gases of the power plant comprise the combustion process of a boiler unit of the coal-fired power plant, the wet desulfurization process and the conversion of outsourced power, and the types of the greenhouse gases of the coal-fired power plant comprise CO 2 And N 2 O. By further determining the types and emission sources of the atmospheric pollutants and the greenhouse gases of the coal-fired power plant, corresponding emission reduction measures can be adopted in a targeted manner in practical application, so that the subsequent quantitative evaluation precision of different emission reduction measures is improved, the situation that multiple evaluation analyses are needed to determine the optimal emission reduction measures due to blindness of the emission reduction measures is avoided. The emission reduction measures comprise specific emission reduction equipment such as a denitration system, a dust removal system, a desulfurization system, a carbon capture system and the like, and change the operation conditions of a unit or the emission reduction equipment, but in practical application, the emission reduction measures are not limited to the above measures, and any measures with an emission reduction effect can be considered as the emission reduction measures.
In particular embodiments, the conventional contaminant comprises SO 2 NOx and soot; the unconventional pollutants comprise ammonia, SO 3 (sulfuric acid mist), mercury and its compounds, lead and its compounds, and cadmium and its compounds, thereby more accurately evaluating the synergistic emission effects of various atmospheric pollutants and greenhouse gases.
In the preferred case, in the step S2, the quantitative analysis method for the synergistic pollution and carbon reduction of the coal-fired power plant determines the emission amount of each of the atmospheric pollutants and the greenhouse gases before and after the emission improvement measures, and specifically includes:
according to the emission concentration, the flue gas amount, the flue gas temperature, the flue gas moisture content and the oxygen content in the flue gas of each atmosphere pollutant and greenhouse gas, under the condition of 6% converted oxygen on a dry basis in a standard state, the emission amount of each atmosphere pollutant and greenhouse gas before and after the emission adding and subtracting measures is calculated based on an emission amount unit.
In a specific embodiment, the data such as the emission concentration of each atmosphere pollutant and greenhouse gas, the flue gas quantity, the flue gas temperature, the flue gas moisture content, the oxygen content in the flue gas and the like can be obtained through database, literature review, power plant unit DCS historical data review or on-site actual measurement. In order to ensure the evaluation accuracy, the measurement device is preferably used for field actual measurement acquisition.
In another specific embodiment, the discharge unit includes:
E i ＝C i ×Q×1000000；
E j ＝C j ×Q×1000000；
wherein E is i The emission amount of the ith atmospheric pollutants is kg/h; e (E) j The emission amount of the j-th greenhouse gas is kg/h; c (C) i The discharge concentration of the ith atmospheric pollutant is expressed in mg/m 3 ；C j The emission concentration of the j-th greenhouse gas is mg/m 3 The method comprises the steps of carrying out a first treatment on the surface of the Q is smoke amount, and the unit is m 3 /h；C i ' is the emission concentration of the ith atmospheric pollutant under the actual working condition, and the unit is mg/m 3 ；C j ' is the emission concentration of the j-th greenhouse gas under the actual working condition, and the unit is mg/m 3 ；The oxygen content in the flue gas is expressed as a unit; />The oxygen content in the flue gas under the actual working condition is shown in the unit of; t is the temperature of the flue gas, and the unit is the temperature; p (P) 0 The local atmospheric pressure is Ps, the flue gas static pressure is expressed as Pa; x is X sw The unit is the moisture content of the flue gas; q' is the smoke quantity under the actual working condition, and the unit is m 3 /h。
In the specific embodiment, the emission amount of each atmosphere pollutant and greenhouse gas before and after the emission reduction measures are applied is accurately calculated based on the emission amount unit, and the influence of different emission reduction measures on the emission amount of each atmosphere pollutant and greenhouse gas can be primarily quantified, so that in actual application, the cooperative and accurate emission control of each atmosphere pollutant and greenhouse gas can be realized by primarily screening out the mode of the superior emission reduction measures, and the emission reduction cost is effectively reduced.
In the method for quantitatively analyzing the synergistic pollution and carbon reduction of the coal-fired power plant, in the preferred embodiment, in the step S3, the emission amount of each atmospheric pollutant before and after the emission reduction measure is applied is converted into the comprehensive atmospheric pollutant emission equivalent, and the emission amount of each greenhouse gas is converted into the carbon dioxide emission equivalent, and the method specifically comprises the following steps:
based on the conversion unit, the emission amount of each atmosphere pollutant before and after the emission reduction measures are applied is converted into comprehensive atmosphere pollutant emission equivalent, and the emission amount of each greenhouse gas is converted into carbon dioxide emission equivalent.
In a specific embodiment, the conversion unit includes:
E LAP,i ＝α i ×E i ；
E GHG,j ＝α j ×E j ；
wherein E is LAP,i Converting the emission amount of the ith atmospheric pollutant into the emission equivalent of the comprehensive atmospheric pollutant, wherein the unit is kg/h;
E GHG,j converting the emission amount of the j-th greenhouse gas into the emission equivalent of carbon dioxide, wherein the unit is kg/h;
a i to convert the emission of the ith atmospheric pollutant into a conversion coefficient of the emission equivalent of the comprehensive atmospheric pollutant;
a j to convert the emission of the jth greenhouse gas into carbon dioxide emission equivalentAnd converting the coefficient.
In a further specific embodiment, the conversion factor a of the atmospheric pollutants i The method specifically comprises the following steps: SO (SO) 2 And NOx isSO 3 Is->Ammonia is->Smoke dust->Mercury and its compound are->Lead and its compound>Cadmium and its compound>Calculation coefficient a of greenhouse gases j The method specifically comprises the following steps: CO 2 Is 1, N 2 O is 265.
More intuitively, the conversion factor is selected based on table 1 at the time of actual application.
TABLE 1
In the embodiment of the invention, the emission amount of each atmosphere pollutant before and after the emission reduction measures are applied is converted into the comprehensive atmosphere pollutant emission equivalent and the emission amount of each greenhouse gas is converted into the carbon dioxide emission equivalent based on the conversion unit, so that the influence of different emission reduction measures on the comprehensive atmosphere pollutant emission equivalent of each atmosphere pollutant and the carbon dioxide emission equivalent of the greenhouse gas can be rapidly and accurately quantified in practical application, and further, the quantitative analysis on the cooperative pollution reduction and carbon reduction of each atmosphere pollutant and the greenhouse gas can be realized based on the step S4 and the step S5, so that the optimal emission reduction measures can be more accurately screened, the cooperative and accurate emission control of each atmosphere pollutant and the greenhouse gas can be realized, and the emission reduction cost can be effectively reduced.
In the method for quantitatively analyzing the synergistic pollution reduction and carbon reduction of the coal-fired power plant, in the preferred embodiment, in the step S4, the emission reduction of the atmospheric pollutants and the greenhouse gases by the emission reduction measures is calculated respectively, and the synergistic effect coefficient is calculated, and the method specifically comprises the following steps:
respectively calculating the emission reduction amount of the emission reduction measures on the atmospheric pollutants and the greenhouse gases based on the emission reduction and synergistic coefficient units, and calculating the synergistic effect coefficient;
wherein, emission reduction and synergy coefficient unit includes:
ICER LAP,m,i ＝E LAP,m,i,0 -E LAP,m,i,l ；
ICER GHG,m,j ＝E GHG,m,j,0 -E GHG,m,j,l ；
wherein, ICER LAP,m,i The emission reduction of the ith air pollutant is carried out for the mth emission reduction measure, and the unit is kg/h;
ICER GHG,m,j the emission reduction of the jth greenhouse gas is carried out for the mth emission reduction measure, and the unit is kg/h;
E LAP,m,i,0 the comprehensive atmospheric pollutant emission equivalent of the ith atmospheric pollutant before the implementation of the mth emission reduction measure is carried out is expressed as kg/h;
E LAP,m,i,l the comprehensive atmospheric pollutant emission equivalent of the ith atmospheric pollutant after the implementation of the mth emission reduction measure is expressed as kg/h;
E GHG,m,j,0 carbon dioxide emission equivalent of the jth greenhouse gas before the mth emission reduction measure is implemented is expressed in kg/h;
E GHG,m,j,l carbon dioxide emission equivalent of the jth greenhouse gas after the mth emission reduction measure is implemented is expressed as kg/h;
Els i/j is the synergistic coefficient of the ith atmospheric pollutant and the jth greenhouse gas.
According to the embodiment of the invention, the emission reduction of different emission reduction measures on each atmosphere pollutant and greenhouse gas is further calculated based on the emission reduction and synergistic coefficient unit, and the synergistic effect coefficient is calculated, so that the synergistic pollution reduction and carbon reduction effects of different emission reduction measures on each atmosphere pollutant and greenhouse gas can be rapidly and accurately judged, and the synergistic accurate emission control of each atmosphere pollutant and greenhouse gas can be realized by screening out the optimal emission reduction measures, and the emission reduction cost is effectively reduced.
In the method for quantitatively analyzing the cooperative pollution reduction and carbon reduction of the coal-fired power plant, in the preferred embodiment, in the step S5, the quantitative evaluation analysis of the cooperative pollution reduction and carbon reduction is performed according to the emission reduction amounts and the cooperative effect coefficients of the atmospheric pollutants and the greenhouse gases, and specifically includes:
when ICER LAP,m,i ≥0，ICER GHG,m,j ≥0，Els i/j When the emission reduction is more than 1, the emission reduction effect on the atmospheric pollutants is greater than that of greenhouse gases;
when ICER LAP,m,i ≥0，ICER GHG,m,j ≥0，Els i/j When=1, the emission reduction effect is equal to the emission reduction effect of greenhouse gases by synergy emission reduction on the atmospheric pollutants;
when ICER LAP,m,i ≥0，ICER GHG,m,j ≥0，0＜Els i/j When the emission reduction is less than 1, the emission reduction effect on the atmospheric pollutants is smaller than that of greenhouse gases in a synergistic way;
when ICER LAP,m,i ≥0，ICER GHG,m,j ≥0，Els i/j When < 0, this situation does not exist;
when ICER LAP,m,i ≥0，ICER GHG,m,j ＜0，Els i/j When 0 or more, the situation does not exist;
when ICER LAP,m,i ≥0，ICER GHG,m,j ＜0，Els i/j When the total amount of the components is less than 0, no synergistic effect exists, the emission of atmospheric pollutants is reduced, and the emission of greenhouse gases is increased;
when ICER LAP,m,i ＜0，ICER GHG,m,j ≥0，Els i/j When 0 or more, the situation does not exist;
when ICER LAP,m,i ＜0，ICER GHG,m,j ≥0，Els i/j When the total amount of the components is less than 0, no synergistic effect exists, the emission of atmospheric pollutants is increased, and the emission of greenhouse gases is reduced;
when ICER LAP,m,i ＜0，ICER GHG,m,j ＜0，Els i/j When the total emission is more than 1, the emission increasing effect on the atmospheric pollutants is larger than that of greenhouse gases;
when ICER LAP,m,i ＜0，ICER GHG,m,j ＜0，Els i/j When the total emission is equal to 1, the emission increasing effect of the total emission to the atmospheric pollutants is equal to that of greenhouse gases;
when ICER LAP,m,i ＜0，ICER GHG,m,j ＜0，0＜Els i/j When the total emission is less than 1, the emission enhancement effect of the total emission enhancement agent on the atmospheric pollutants is smaller than that of greenhouse gases;
when ICER LAP,m,i ＜0，ICER GHG,m,j ＜0，Els i/j When < 0, this situation does not exist.
Wherein, please refer to table 2 for more intuitively obtaining the synergistic emission reduction evaluation result of at least one emission reduction measure on a certain atmospheric pollutant and a certain greenhouse gas.
TABLE 2
The present invention will be described in detail by way of examples, but the scope of the present invention is not limited thereto.
Example 1
Taking a carbon capture device operated in a coal-fired power plant as an example, an on-line monitoring system is arranged at an inlet and an outlet of the carbon capture device, and the concentration of each pollutant and greenhouse gas in the discharged flue gas and the flue gas parameters are monitored in real time. The quantitative analysis method for the collaborative pollution reduction and carbon reduction of the coal-fired power plant shown in the figure 1 is adopted, and concretely comprises the following steps:
s1, determining the types and emission sources of atmospheric pollutants and greenhouse gases of a coal-fired power plant according to the actual production situation of the coal-fired power plant;
s2, determining the emission amount of each atmosphere pollutant and greenhouse gas before and after the emission improvement measures are applied according to the types and emission sources of the atmosphere pollutant and the greenhouse gas of the coal-fired power plant; wherein, the determining of the emission of each atmosphere pollutant and greenhouse gas before and after the emission improvement measure specifically comprises: according to the emission concentration, the flue gas amount, the flue gas temperature, the flue gas moisture content and the oxygen content in the flue gas of each atmosphere pollutant and greenhouse gas, under the condition of 6% converted oxygen on a standard state dry basis, calculating the emission amount of each atmosphere pollutant and greenhouse gas before and after the emission improvement measure is applied based on an emission amount unit;
s3, converting the emission amount of each atmosphere pollutant before and after the emission reduction measures are applied into comprehensive atmosphere pollutant emission equivalent and converting the emission amount of each greenhouse gas into carbon dioxide emission equivalent based on a conversion unit;
s4, according to comprehensive atmospheric pollutant emission equivalent of atmospheric pollutants before and after the emission reduction measures and carbon dioxide emission equivalent of greenhouse gases, respectively calculating emission reduction amounts of the emission reduction measures on the atmospheric pollutants and the greenhouse gases based on emission reduction and synergistic coefficient units, and calculating synergistic effect coefficients;
s5, carrying out quantitative evaluation analysis on the synergistic pollution reduction and carbon reduction according to the emission reduction and the synergistic effect coefficient of each atmosphere pollutant and greenhouse gas.
Specifically, in step S1, it is determined that the main atmospheric pollutant during operation of the coal-fired power plant is NO generated by combustion in the boiler x Smoke and SO 2 The main greenhouse gas is CO generated by boiler combustion 2 。
In step S2, the amounts of emissions of the atmospheric pollutants and greenhouse gases before and after the emission reduction measure (carbon capture device) were carried out are shown in table 4; wherein the carbon capture plant flue gas inlet and outlet data are shown in table 3.
TABLE 3 Table 3
TABLE 4 Table 4
In step S3, the emission amount of each of the atmospheric pollutants before and after the emission reduction measures are applied is converted into a comprehensive atmospheric pollutant emission equivalent and the emission amount of each of the greenhouse gases is converted into a carbon dioxide emission equivalent based on the conversion unit, as shown in table 5.
TABLE 5
In step S4, the emission reduction amounts of the atmospheric pollutants and the greenhouse gases by different emission reduction measures are calculated based on the emission reduction and co-factor units respectively according to the comprehensive atmospheric pollutant emission equivalent of the atmospheric pollutants before and after the emission reduction measures and the carbon dioxide emission equivalent of the greenhouse gases, and the co-factor is calculated, as shown in table 6.
TABLE 6
In step S5, quantitative evaluation analysis of the synergistic pollution and carbon reduction is performed according to the emission reduction amounts and the synergistic effect coefficients of the atmospheric pollutants and the greenhouse gases, and specifically shown in table 7.
TABLE 7
As is clear from Table 7, the carbon capture device captured CO 2 At the same time as SO 2 Cigarette with smokeThe dust has different removing effects, namely, the carbon trapping device has the effect on SO 2 Smoke and greenhouse gas CO 2 Has synergistic effect of reducing pollution and carbon. Simultaneously compared with SO 2 And under the same carbon dioxide emission reduction condition, the synergistic effect coefficient of the smoke is larger, namely the potential of the carbon capture device for reducing pollution and carbon of the smoke is larger. Based on the quantitative analysis method for the collaborative pollution and carbon reduction of the coal-fired power plant, the SO can be rapidly and accurately judged under the operating condition by adopting the carbon capture device in the practical application process 2 Smoke and NO x The synergistic pollution reduction and carbon reduction effects with carbon dioxide are achieved, so that the optimal emission reduction measures are selected through screening, the synergistic accurate emission control of all the atmospheric pollutants and greenhouse gases is achieved, and the emission reduction cost is effectively reduced.
Example 2
Taking 1000MW domestic ultra-supercritical coal indirect air cooling unit running in a coal-fired power plant as an example, an on-line monitoring system is arranged at the inlet and outlet of the desulfurization system, and the concentration of each pollutant and greenhouse gas in the discharged flue gas and various flue gas parameters are monitored in real time. The quantitative analysis method for the collaborative pollution reduction and carbon reduction of the coal-fired power plant shown in the figure 1 is adopted, and concretely comprises the following steps:
s1, determining the types and emission sources of atmospheric pollutants and greenhouse gases of a coal-fired power plant according to the actual production situation of the coal-fired power plant;
s2, determining the emission amount of each atmosphere pollutant and greenhouse gas before and after the emission improvement measures are applied according to the types and emission sources of the atmosphere pollutant and the greenhouse gas of the coal-fired power plant; wherein, the determining of the emission of each atmosphere pollutant and greenhouse gas before and after the emission improvement measure specifically comprises: according to the emission concentration, the flue gas amount, the flue gas temperature, the flue gas moisture content and the oxygen content in the flue gas of each atmosphere pollutant and greenhouse gas, under the condition of 6% converted oxygen on a standard state dry basis, calculating the emission amount of each atmosphere pollutant and greenhouse gas before and after the emission improvement measure is applied based on an emission amount unit;
s3, converting the emission amount of each atmosphere pollutant before and after the emission reduction measures are applied into comprehensive atmosphere pollutant emission equivalent and converting the emission amount of each greenhouse gas into carbon dioxide emission equivalent based on a conversion unit;
s4, according to comprehensive atmospheric pollutant emission equivalent of atmospheric pollutants before and after the emission reduction measures and carbon dioxide emission equivalent of greenhouse gases, respectively calculating emission reduction amounts of the emission reduction measures on the atmospheric pollutants and the greenhouse gases based on emission reduction and synergistic coefficient units, and calculating synergistic effect coefficients;
s5, carrying out quantitative evaluation analysis on the synergistic pollution reduction and carbon reduction according to the emission reduction and the synergistic effect coefficient of each atmosphere pollutant and greenhouse gas.
Specifically, in step S1, it is determined that the main atmospheric contaminant is NO generated by boiler combustion when the unit is operated at 100% load x Smoke and SO 2 The main greenhouse gas is CO generated by boiler combustion 2 CO generated in desulfurization process 2 。
In step S2, the amounts of emissions of each of the atmospheric pollutants and greenhouse gases before and after the emission reduction measure (desulfurization system) was carried out are shown in table 9; wherein the flue gas inlet and outlet data of the desulfurization system are shown in table 8.
TABLE 8
TABLE 9
In step S3, the emission amount of each of the atmospheric pollutants before and after the emission reduction measures are applied is converted into the integrated atmospheric pollutant emission equivalent and the emission amount of each of the greenhouse gases is converted into the carbon dioxide emission equivalent based on the conversion unit, as shown in table 10.
Table 10
In step S4, the emission reduction amounts of the atmospheric pollutants and the greenhouse gases by different emission reduction measures are calculated based on the emission reduction and co-factor units respectively according to the comprehensive atmospheric pollutant emission equivalent of the atmospheric pollutants before and after the emission reduction measures and the carbon dioxide emission equivalent of the greenhouse gases, and the co-factor is calculated, as shown in table 11.
TABLE 11
In step S5, quantitative evaluation analysis of the synergistic pollution and carbon reduction is performed according to the emission reduction amounts and the synergistic effect coefficients of the atmospheric pollutants and the greenhouse gases, and specifically shown in table 12.
Table 12
As can be seen from Table 12 above, the desulfurization system is specific to SO 2 Smoke and NO x All have different degrees of removal and emission reduction effects, but CO is generated in the desulfurization process 2 Resulting in outlet CO 2 The discharge equivalent is higher than the inlet CO 2 Equivalent emissions, therefore, the desulfurization system is specific to three atmospheric pollutants and the greenhouse gas CO 2 Has no synergistic effect of pollution reduction and carbon reduction. Based on the quantitative analysis method for the collaborative pollution and carbon reduction of the coal-fired power plant, the SO of the desulfurization system under the operating condition can be rapidly and accurately judged in the practical application process 2 Smoke and NO x The synergistic pollution reduction and carbon reduction effects with carbon dioxide are achieved, so that the optimal emission reduction measures are selected through screening, the synergistic accurate emission control of all the atmospheric pollutants and greenhouse gases is achieved, and the emission reduction cost is effectively reduced.
According to the quantitative analysis method for the collaborative pollution reduction and carbon reduction of the coal-fired power plant, provided by the invention, the emission control level of the pollutant emission of the coal-fired power plant can be effectively improved during actual application by collaborative analysis of the atmospheric pollutant and the greenhouse gas emission according to emission reduction measures, and the collaborative emission of the atmospheric pollutant and the greenhouse gas is realized, so that the influence on the coal-fired power plant is reduced to the greatest extent while the emission of the pollutant reaches the standard, and the treatment cost is effectively saved.
The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings, but the present invention is not limited thereto. Within the scope of the technical idea of the invention, a plurality of simple variants can be made to the technical proposal of the invention, and in order to avoid unnecessary repetition, the invention does not need to be additionally described for various possible combinations. Such simple variations and combinations are likewise to be regarded as being within the scope of the present disclosure.
Claims (10)
1. A quantitative analysis method for collaborative pollution and carbon reduction of a coal-fired power plant is characterized by comprising the following steps:
s1, determining the types and emission sources of atmospheric pollutants and greenhouse gases of a coal-fired power plant according to the actual production situation of the coal-fired power plant;
s2, determining the emission amount of each atmosphere pollutant and greenhouse gas before and after the emission improvement measures are applied according to the types and emission sources of the atmosphere pollutant and the greenhouse gas of the coal-fired power plant;
s3, converting the emission of each atmosphere pollutant before and after the emission reduction measures are applied into comprehensive atmosphere pollutant emission equivalent, and converting the emission of each greenhouse gas into carbon dioxide emission equivalent;
s4, calculating the emission reduction amount of the emission reduction measures on the air pollutants and the greenhouse gases respectively according to the comprehensive air pollutant emission equivalent of the air pollutants and the carbon dioxide emission equivalent of the greenhouse gases before and after the emission reduction measures are applied, and calculating the synergistic effect coefficient;
s5, carrying out quantitative evaluation analysis on the synergistic pollution reduction and carbon reduction according to the emission reduction and the synergistic effect coefficient of each atmosphere pollutant and greenhouse gas.
2. The quantitative analysis method according to claim 1, wherein in step S1, the emission source of the atmospheric pollutants of the coal-fired power plant includes a combustion process of a boiler unit of the coal-fired power plant, and the types of the atmospheric pollutants of the coal-fired power plant include normal pollutants and non-normal pollutants;
the emission sources of the greenhouse gases of the coal-fired power plant comprise the combustion process of a boiler unit of the coal-fired power plant, the wet desulfurization process and the conversion of outsourced power, and the types of the greenhouse gases of the coal-fired power plant comprise CO 2 And N 2 O。
3. The quantitative analysis method according to claim 2, wherein the conventional contaminant comprises SO 2 NOx and soot; the unconventional pollutants comprise ammonia, SO 3 Mercury and its compounds, lead and its compounds, and cadmium and its compounds.
4. A quantitative analysis method according to any one of claims 1 to 3, wherein in step S2, the determination of the emission amount of each of the atmospheric pollutants and the greenhouse gases before and after the emission control measure is applied specifically comprises:
according to the emission concentration, the flue gas amount, the flue gas temperature, the flue gas moisture content and the oxygen content in the flue gas of each atmosphere pollutant and greenhouse gas, under the condition of 6% converted oxygen on a dry basis in a standard state, the emission amount of each atmosphere pollutant and greenhouse gas before and after the emission adding and subtracting measures is calculated based on an emission amount unit.
5. The quantitative analysis method according to claim 4, wherein the emission unit includes:
E i ＝C i ×Q×1000000；
E j ＝C j ×Q×1000000；
wherein E is i The emission amount of the ith atmospheric pollutants is kg/h; e (E) j The emission amount of the j-th greenhouse gas is kg/h; c (C) i The discharge concentration of the ith atmospheric pollutant is expressed in mg/m 3 ；C j The emission concentration of the j-th greenhouse gas is mg/m 3 The method comprises the steps of carrying out a first treatment on the surface of the Q is smoke amount, and the unit is m 3 /h；C i ' is the emission concentration of the ith atmospheric pollutant under the actual working condition, and the unit is mg/m 3 ；C j ' is the emission concentration of the j-th greenhouse gas under the actual working condition, and the unit is mg/m 3 ；The oxygen content in the flue gas is expressed as a unit; />The oxygen content in the flue gas under the actual working condition is shown in the unit of; t is the temperature of the flue gas, and the unit is the temperature; p (P) 0 The local atmospheric pressure is Ps, the flue gas static pressure is expressed as Pa; x is X sw The unit is the moisture content of the flue gas; q' is the smoke quantity under the actual working condition, and the unit is m 3 /h。
6. The quantitative analysis method according to claim 5, wherein in step S3, the conversion of the emission amount of each of the atmospheric pollutants before and after the emission reduction measures are applied into a comprehensive atmospheric pollutant emission equivalent, and the conversion of the emission amount of each of the greenhouse gases into a carbon dioxide emission equivalent, specifically comprises:
based on the conversion unit, the emission amount of each atmosphere pollutant before and after the emission reduction measures are applied is converted into comprehensive atmosphere pollutant emission equivalent, and the emission amount of each greenhouse gas is converted into carbon dioxide emission equivalent.
7. The quantitative analysis method according to claim 6, wherein the conversion unit includes:
E LAP,i ＝α i ×E i ；
E GHG,j ＝α j ×E j ；
wherein E is LAP,i Converting the emission amount of the ith atmospheric pollutant into the emission equivalent of the comprehensive atmospheric pollutant, wherein the unit is kg/h;
E GHG,j converting the emission amount of the j-th greenhouse gas into the emission equivalent of carbon dioxide, wherein the unit is kg/h;
a i to convert the emission of the ith atmospheric pollutant into a conversion coefficient of the emission equivalent of the comprehensive atmospheric pollutant;
a j to convert the emission of the j-th greenhouse gas into a conversion factor of carbon dioxide emission equivalent.
8. The quantitative analysis method according to claim 7, wherein the atmospheric contaminant conversion coefficient a i The method specifically comprises the following steps: SO (SO) 2 And NO x Is thatSO 3 Is->Ammonia is->Smoke dust->Mercury and its compound are->Lead and its compound>Cadmium and its compound>
Calculation coefficient a of greenhouse gases j The method specifically comprises the following steps: CO 2 Is 1, N 2 O is 265.
9. The quantitative analysis method according to claim 7 or 8, wherein in step S4, the calculating emission reduction amounts of the emission reduction measures for the respective atmospheric pollutants and greenhouse gases, respectively, and calculating the synergistic effect coefficient specifically includes:
respectively calculating the emission reduction amount of the emission reduction measures on the atmospheric pollutants and the greenhouse gases based on the emission reduction and synergistic coefficient units, and calculating the synergistic effect coefficient;
wherein, emission reduction and synergy coefficient unit includes:
ICER LAP，m，i ＝E LAP，m，i，0 -E LAP，m，i，l ；
ICER GHG，m，j ＝E GHG，m，j，0 -E GHG，m，j，l ；
wherein, ICER LAP，m，i The emission reduction of the ith air pollutant is carried out for the mth emission reduction measure, and the unit is kg/h;
ICER GHG，m，j the emission reduction of the jth greenhouse gas is carried out for the mth emission reduction measure, and the unit is kg/h;
E LAP，m，i，0 the comprehensive atmospheric pollutant emission equivalent of the ith atmospheric pollutant before the implementation of the mth emission reduction measure is carried out is expressed as kg/h;
E LAP，m，i，1 the comprehensive atmospheric pollutant emission equivalent of the ith atmospheric pollutant after the implementation of the mth emission reduction measure is expressed as kg/h;
E GHG，m，j，0 carbon dioxide emission equivalent of the jth greenhouse gas before the mth emission reduction measure is implemented is expressed in kg/h;
E GHG，m，j，1 carbon dioxide emission equivalent of the jth greenhouse gas after the mth emission reduction measure is implemented is expressed as kg/h;
Els i/j is the synergistic coefficient of the ith atmospheric pollutant and the jth greenhouse gas.
10. The quantitative analysis method according to claim 9, wherein in step S5, the quantitative evaluation analysis of the synergistic pollution reduction and carbon reduction is performed according to the emission reduction amounts of the respective atmospheric pollutants and greenhouse gases and the synergistic effect coefficient, specifically comprising:
when ICER LAP，m，i ≥0，ICER GHG，m，j ≥0，Els i/j When the emission reduction is more than 1, the emission reduction effect on the atmospheric pollutants is greater than that of greenhouse gases;
when ICER LAP，m，i ≥0，ICER GHG，m，j ≥0，Els i/j＝ 1, the emission reduction effect of the synergistic emission reduction on the atmospheric pollutants is equal to that of greenhouse gases;
when ICER LAP，m，i ≥0，ICER GHG，m，j ≥0，0＜Els i/j When the emission reduction is less than 1, the emission reduction effect on the atmospheric pollutants is smaller than that of greenhouse gases in a synergistic way;
when ICER LAP，m，i ≥0，ICER GHG，m，j ≥0，Els i/j When < 0, this situation does not exist;
when ICER LAP，m，i ≥0，ICER GHG，m，j ＜0，Els i/j When 0 or more, the situation does not exist;
when ICER LAP，m，i ≥0，ICER GHG，m，j ＜0，Els i/j When the total amount of the components is less than 0, no synergistic effect exists, the emission of atmospheric pollutants is reduced, and the emission of greenhouse gases is increased;
when ICER LAP,m,i ＜0，ICER GHG,m,j ≥0，Els i/j When 0 or more, the situation does not exist;
when ICER LAP,m,i ＜0，ICER GHG,m,j ≥0，Els i/j When the total amount of the components is less than 0, no synergistic effect exists, the emission of atmospheric pollutants is increased, and the emission of greenhouse gases is reduced;
when ICER LAP,m,i ＜0，ICER GHG,m,j ＜0，Els i/j When the total emission is more than 1, the emission increasing effect on the atmospheric pollutants is larger than that of greenhouse gases;
when ICER LAP,m,i ＜0，ICER GHG,m,j ＜0，Els i/j When the total emission is equal to 1, the emission increasing effect of the total emission to the atmospheric pollutants is equal to that of greenhouse gases;
when ICER LAP,m,i ＜0，ICER GHG,m,j ＜0，0＜Els i/j When the total emission is less than 1, the emission enhancement effect of the total emission enhancement agent on the atmospheric pollutants is smaller than that of greenhouse gases;
when ICER LAP,m,i ＜0，ICER GHG,m,j ＜0，Els i/j When < 0, this situation does not exist.
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