Method for analyzing carbon footprint in incineration disposal of household garbage

Abstract

The invention relates to the field of carbon emission analysis, and discloses a household garbage incineration disposal carbon footprint analysis method, which comprises the following steps: firstly, determining a garbage incineration disposal carbon footprint evaluation boundary and identifying greenhouse gas emission source categories covered in a garbage incineration disposal process; constructing a waste incineration disposal carbon footprint evaluation calculation model, and respectively calculating different types of greenhouse gas emissions according to a carbon footprint evaluation boundary; collecting related data of a carbon footprint evaluation boundary; substituting into a carbon footprint evaluation calculation model, calculating to obtain the greenhouse gas emission amount of each emission source, and obtaining the total greenhouse gas emission amount of the whole process; analyzing and evaluating the carbon emission of the waste incineration disposal according to the greenhouse gas emission of different greenhouse gas emission source categories and the total emission, and providing carbon reduction measures for key emission sources according to the carbon reduction measures; according to the invention, the problems of incomplete carbon footprint analysis and poor accuracy of carbon emission accounting data in existing waste incineration disposal are solved.

Description

Technical Field

[0001] The present invention relates to the field of carbon emission analysis, and in particular to a method for analyzing carbon footprint of domestic waste incineration disposal. Background Art

[0002] The specific process of waste incineration mainly includes the collection and transportation of domestic waste, the waste incineration power generation, and the waste residue treatment. At present, the carbon emissions in the waste incineration process are mainly calculated for the waste incineration link. In the existing carbon emission analysis, different carbon emission accounting models and methods for waste incineration power generation are proposed to calculate the carbon emissions in the waste incineration power generation link.

[0003] However, the current carbon emission accounting method for the waste incineration power generation link mainly considers the carbon emissions from the waste incineration process, and does not consider the carbon emissions generated by fossil fuel auxiliary combustion, leachate treatment, flue gas treatment and other processes, resulting in incomplete carbon emission accounting in the waste incineration power generation link and poor data accuracy. At the same time, existing research only calculates the carbon emissions in the waste incineration power generation link during the waste incineration process, and there is no report on the carbon footprint analysis of the entire life cycle of waste incineration treatment. Summary of the invention

[0004] The present invention aims to provide a method for analyzing the carbon footprint of domestic waste incineration disposal, which solves the problems of incomplete carbon footprint analysis of existing waste incineration disposal and poor accuracy of carbon emission accounting data.

[0005] In order to achieve the above object, the present invention provides the following method:

[0006] A method for analyzing carbon footprint of domestic waste incineration disposal provided by the present invention is:

[0007] S1: Determine the carbon footprint assessment boundary of waste incineration and identify the categories of greenhouse gas emission sources covered in the waste incineration process;

[0008] S2: constructing a carbon footprint evaluation calculation model for waste incineration disposal, and calculating the greenhouse gas emissions of the different greenhouse gas emission source categories according to the carbon footprint evaluation boundary;

[0009] S3: Collect relevant data of the carbon footprint assessment boundary;

[0010] S4: Substituting the collected data on the carbon footprint evaluation boundary into the constructed waste incineration disposal carbon footprint evaluation calculation model, obtaining the greenhouse gas emissions of each emission source by calculation, and then aggregating the data to obtain the total greenhouse gas emissions of the entire waste incineration disposal process;

[0011] S5: Analyze and evaluate the carbon emissions from waste incineration based on the calculated greenhouse gas emissions from different greenhouse gas emission source categories during the waste incineration process and the total greenhouse gas emissions from the entire waste incineration process, and propose carbon reduction measures for key emission sources accordingly.

[0012] Preferably, the steps of determining the carbon footprint assessment boundary of waste incineration disposal and identifying the categories of greenhouse gas emission sources covered in the waste incineration disposal process include: the carbon footprint assessment boundary of waste incineration disposal includes: production and transportation stage, waste incineration power generation stage, and solid waste treatment stage; the steps of identifying the categories of greenhouse gas emission sources covered in the waste incineration disposal process include: greenhouse gas emission source categories in the production and transportation stage, greenhouse gas emission source categories in the waste incineration power generation stage, and greenhouse gas emission source categories in the solid waste treatment stage.

[0013] Preferably, the categories of greenhouse gas emission sources in the production and transportation stage include greenhouse gas emissions during the collection and transportation of domestic waste to the waste incineration power plant, and greenhouse gas emissions during the production and transportation of auxiliary fuels and chemicals to the waste incineration power plant; auxiliary fuels include natural gas, diesel, coal, etc.; chemicals include trisodium phosphate, ammonia, urea, slaked lime, activated carbon, sodium hydroxide, fly ash chelating agent; vehicles for transporting domestic waste, auxiliary fuels and chemicals can be fuel vehicles or electric vehicles, and the fuel of fuel vehicles is diesel; the categories of greenhouse gas emission sources in the waste incineration power generation stage include greenhouse gas emissions generated during the storage of domestic waste, greenhouse gas emissions generated during the combustion of fossil carbon in domestic waste, and greenhouse gas emissions generated during the storage of domestic waste. greenhouse gas emissions, greenhouse gas emissions generated during the combustion of auxiliary fuels, greenhouse gas emissions generated during the flue gas purification process, greenhouse gas emissions generated during the leachate treatment process, greenhouse gas emissions generated during the fly ash chelation pretreatment process, and greenhouse gas emissions generated during purchased electricity; the categories of greenhouse gas emission sources in the solid waste treatment stage include greenhouse gas emissions generated during the transportation of slag from the waste incineration power plant to the disposal site and during the treatment process, and greenhouse gas emissions generated during the transportation of fly ash from the waste incineration power plant to the disposal site and during the treatment process; the vehicles for transporting slag and fly ash can be fuel vehicles or electric vehicles, and the fuel of fuel vehicles is diesel; the slag treatment method is landfill; the fly ash treatment method is landfill.

[0014] Preferably, the formula for constructing the carbon footprint evaluation calculation model for waste incineration disposal and calculating the greenhouse gas emissions of different greenhouse gas emission source categories according to the carbon footprint evaluation boundary is:

[0015] E 总 =E1+E2+E3

[0016] Among them, E 总 is the total carbon emissions during waste incineration disposal;

[0017] E1 is the total carbon emissions during the production and transportation stages;

[0018] E2 is the total carbon emissions during the waste incineration power generation stage;

[0019] E3 is the total carbon emissions in the solid waste treatment stage.

[0020] Preferably, the formula for calculating the total carbon emissions E1 in the production and transportation stages is:

[0021] E1=E L +E F +E H

[0022] Among them, E L Carbon emissions from waste collection and transportation to waste-to-energy plants;

[0023] E F Carbon emissions from the production and transportation of auxiliary fuel to waste-to-energy plants;

[0024] E H Carbon emissions from the production and transportation of chemicals to waste incineration power plants.

[0025] Preferably, the E is calculated L , the E F and the E H The formula is:

[0026] The formula for calculating EL is:

[0027] E L =AD L,e ×EF e +AD L,c ×EF c ×L L

[0028] Among them, AD L,e The electricity consumption during the collection and transportation of garbage;

[0029] EF e is the provincial power grid carbon emission factor;

[0030] AD L,c Diesel consumption during waste collection and transportation;

[0031] EF c The carbon emission factor of diesel vehicles burning diesel is different for diesel vehicles with different loads.

[0032] L L The distance that garbage is transported from the collection point to the waste-to-energy plant;

[0033] Calculate E F The formula is:

[0034]

[0035] Among them, AD F,i is the transportation volume of auxiliary fuel i, i is the type of auxiliary fuel, AD F,t is the natural gas delivery volume, AD F,c is the transport volume of diesel, AD F,m is the transportation volume of coal, and the transportation volume of auxiliary fuel i is equal to the total consumption of auxiliary fuel i in the waste incineration power plant;

[0036] EF G,i is the carbon emission factor in the production process of auxiliary fuel i, EF G,t Represents the carbon emission factor in the natural gas production process, EF G,c Represents the carbon emission factor in the diesel production process, EF G,m Represents the carbon emission factor in the coal production process;

[0037] AD F,e,i The power consumption during the transportation of auxiliary fuel i is as follows: auxiliary fuel diesel and coal can be transported by electric trains, and the power consumption is the power consumption of electric trains; natural gas is transported by pipelines, and the power consumption is the power consumption of compressors;

[0038] AD F,c,i To supplement the diesel consumption in the transportation process of auxiliary fuel i, auxiliary fuel diesel and coal can also be transported by diesel trucks;

[0039] L F,i The transportation distance of auxiliary fuel i from the manufacturer to the waste incineration power plant;

[0040] Calculate E H The formula is:

[0041] E H =∑ j＝a,n,x,h,q,f [AD H,j ×EF G,j +AD H,e,j ×EF e +AD H,c,j ×(EF G,c +EF c ×L H,j )]

[0042] Among them, AD H,j is the transport volume of chemical agent j, j is the type of chemical agent, AD H,a is the transport volume of ammonia water, AD H,n is the transport volume of urea, AD H,xis the transportation volume of slaked lime, AD H,h is the transport volume of activated carbon, AD H,q is the transport volume of sodium hydroxide, AD H,f is the transportation volume of fly ash chelating agent, and the transportation volume of chemical agent j is equal to the total consumption of chemical agent j in the waste incineration power plant;

[0043] EF G,j is the carbon emission factor in the production process of chemical agent j, EF G,a is the carbon emission factor in the ammonia production process, EF G,n is the carbon emission factor in the urea production process, EF G,x is the carbon emission factor in the slaked lime production process, EF G,h is the carbon emission factor in the activated carbon production process, EF G,q is the carbon emission factor in the sodium hydroxide production process, EF G,f is the carbon emission factor during the production of fly ash chelating agents;

[0044] AD H,e,j The power consumption during the transportation of chemical agent j;

[0045] AD H,c,j is the diesel consumption during the transportation of chemical agent j;

[0046] L H,j is the transportation distance of chemical agent j from the manufacturer to the waste incineration power plant.

[0047] Preferably, the formula for calculating the total carbon emissions E2 in the waste incineration power generation stage is:

[0048] E2=E st +E in +E in,f +E pu +E pe +E ch +E out,e

[0049] Among them, E st Carbon emissions generated during the storage of domestic waste;

[0050] E in Carbon emissions from the combustion of fossil carbon in domestic waste;

[0051] E in,f Carbon emissions generated during the combustion of auxiliary fuels;

[0052] E pu Greenhouse gas emissions from the flue gas cleaning process;

[0053] E peis the carbon emissions generated during leachate treatment;

[0054] E ch Carbon emissions from fly ash chelation pretreatment;

[0055] E out,e Carbon emissions from purchased electricity.

[0056] Preferably, the E is calculated st 、E in 、E in,f 、E pu 、E pe 、E ch and E out,e The formula is:

[0057] Among them, E st = 0, the methane produced by the fermentation of garbage in the garbage pit enters the incinerator together with other gases and is burned and converted into CO2. This part of CO2 comes from the fermentation of biochar and can be excluded from greenhouse gas emissions, that is, E st =0;

[0058] Calculate E in The formula is:

[0059] E in =E in,CO2 +E in,CH4 +E in,N2O

[0060] Among them, E in,CO2 CO2 emissions from the combustion of fossil carbon in garbage;

[0061] E in,CH4 Carbon emissions corresponding to CH4 emissions from incomplete combustion of fossil carbon in garbage;

[0062] E in,N2O Carbon emissions corresponding to N2O emissions generated during the combustion of fossil carbon in garbage and flue gas purification;

[0063]

[0064] Among them, W w It is the wet weight of the domestic waste entering the factory;

[0065] ω is the moisture content of the domestic waste samples entering the factory;

[0066] WF f is the proportion of component f in the garbage dry matter,

[0067] CF f is the carbon proportion in component f in the garbage dry matter;

[0068] FCF f is the proportion of fossil carbon in component f to total carbon in the dry matter of garbage;

[0069] OF is the carbon oxidation rate of waste incineration;

[0070] f is the component of the dry matter of garbage, including paper, rubber, plastic, kitchen waste, bamboo and wood, etc.;

[0071]

[0072] Among them, W f It is the wet weight of domestic garbage entering the furnace;

[0073] is the CH4 emission factor associated with waste incineration;

[0074] is the global warming potential of CH4;

[0075]

[0076] in, is the N2O emission factor associated with waste incineration;

[0077] The global warming potential of N2O;

[0078] Calculate E in,f The formula is:

[0079] E in,f =AD f,i ×EF i

[0080] Among them, AD f，i is the consumption of auxiliary fuel i;

[0081] EF i is the carbon emission factor of auxiliary fuel i;

[0082] i is the type of auxiliary fuel, including natural gas, diesel, and coal;

[0083] Among them, E pu = 0, waste incineration and flue gas purification is a continuous process, the N2O generated by waste incineration and the N2O generated by flue gas purification and denitrification are calculated uniformly. The calculation process is shown in Therefore, it is considered here that E pu =0.

[0084] Calculate E pe The formula is:

[0085]

[0086] in, CH4 emissions due to methane leakage during leachate treatment;

[0087] It is the N2O emission during leachate treatment;

[0088]

[0089] Among them, Q in is the amount of leachate entering the leachate treatment system;

[0090] C in is the COD mass concentration of the leachate entering the leachate treatment system;

[0091] Q out is the effluent volume of the leachate treatment system;

[0092] C out is the COD mass concentration in the effluent of the leachate treatment system;

[0093] η is the biogas production rate of the leachate treatment system;

[0094] β is the volume ratio of CH4 in the biogas produced by the leachate treatment system;

[0095] is the density of methane;

[0096] L is the CH4 leakage rate of the leachate system;

[0097]

[0098] in, is the N2O emission factor of the leachate treatment process;

[0099] Among them, E ch =0, the fly ash chelation pretreatment process mainly uses the electricity produced by the incineration plant and does not directly produce carbon emissions.

[0100] Calculate E out，e The formula is:

[0101] E out,e =AD out,e ×EF e

[0102] Among them, AD out，e The amount of electricity purchased for the waste incineration power generation stage.

[0103] Preferably, the formula for calculating the total carbon emissions E3 in the solid waste treatment stage is:

[0104] E3=E sl,y +E sl,c +E fl,y +E fl,c

[0105] Among them, E sl,y Carbon emissions from transporting slag to disposal sites;

[0106] E sl,c Carbon emissions from slag disposal;

[0107] E fl,y Carbon emissions from transporting slag to disposal sites;

[0108] E fl,c Carbon emissions generated during slag disposal.

[0109] Preferably, the E is calculated sl,y 、E sl,c 、E fl,y and E fl,c The formula is:

[0110] Calculate E sl，y The formula is:

[0111] E sl,y =AD sl,e ×EF e +AD sl,c ×(EF G,c +EF c ×L sl )

[0112] Among them, AD sl，e The power consumption during slag transportation;

[0113] AD sl，c It is the diesel consumption in the process of slag transportation;

[0114] L sl is the transportation distance of slag from the waste incineration power plant to the landfill;

[0115] Among them, E sl,c = 0, greenhouse gases are not directly emitted during slag landfill, and it is considered that E sl,c is 0;

[0116] Calculate E fl,y The formula is:

[0117] E fl,y =AD fl,e ×EF e +AD fl,c ×(EF G,c +EFc ×L fl )

[0118] Among them, AD fl，e The power consumption during the transportation of fly ash;

[0119] AD fl，c is the diesel consumption during fly ash transportation;

[0120] L fl is the transportation distance of fly ash from the waste incineration power plant to the landfill;

[0121] Among them, E fl,c = 0, the fly ash landfill process does not directly emit greenhouse gases, and it is considered that E sl,c is 0.

[0122] The beneficial effects of the present invention are as follows: the present invention constructs a carbon footprint evaluation and calculation model suitable for the incineration and disposal of domestic waste, evaluates and analyzes the carbon emissions of the entire life cycle of the incineration and disposal of domestic waste, solves the problems of incomplete carbon footprint analysis of existing waste incineration and disposal and poor accuracy of carbon emission accounting data, obtains more comprehensive and accurate greenhouse gas emission data of waste incineration and disposal, and accurately grasps the greenhouse gas emission level of domestic waste in the entire life cycle; the present invention calculates and analyzes the greenhouse gas emissions in the entire life cycle of the incineration treatment of domestic waste, and accurately grasps the greenhouse gas emission level of domestic waste from the generation to the resource utilization; the present invention combines the actual process of domestic waste incineration, comprehensively identifies the greenhouse gas emission sources in the process of waste incineration and disposal, constructs a carbon footprint evaluation and calculation model suitable for the incineration and disposal of domestic waste, and obtains more comprehensive and accurate greenhouse gas emission data of waste incineration and disposal. BRIEF DESCRIPTION OF THE DRAWINGS

[0123] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following is a brief introduction to the drawings required for the specific embodiments or the description of the prior art. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn according to the actual scale.

[0124] Figure 1 It is a flow chart of a method for analyzing carbon footprint of incineration disposal of domestic waste provided in an embodiment of the present invention.

[0125] Figure 2 It is a boundary diagram of carbon footprint analysis of domestic waste incineration disposal provided by an embodiment of the present invention.

[0126] Figure 3 This is a carbon footprint assessment process data collection table provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0127] In order to make the technical personnel in the technical field better understand the scheme of the present invention, the technical scheme in the embodiment of the present invention will be clearly and completely described below in combination with the drawings in the embodiment of the present invention. Obviously, the described embodiment is only a part of the embodiment of the present invention, not all the embodiments. Based on the embodiment of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0128] The terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish different objects rather than to describe a specific order. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, device, product or end including a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units that are not listed, or may optionally include other steps or units inherent to these processes, methods, products or ends.

[0129] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present invention. The appearance of the phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0130] The current carbon emission accounting method for the waste incineration power generation link mainly considers the carbon emissions from the waste incineration process, and does not consider the carbon emissions generated by fossil fuel auxiliary combustion, leachate treatment, flue gas treatment and other processes, resulting in incomplete carbon emission accounting in the waste incineration power generation link and poor data accuracy. At the same time, existing research only calculates the carbon emissions in the waste incineration power generation link during the waste incineration process, and there is no report on the carbon footprint analysis of the entire life cycle of waste incineration treatment.

[0131] The present invention aims to provide a method for analyzing the carbon footprint of domestic waste incineration disposal, which solves the problems of incomplete carbon footprint analysis of existing waste incineration disposal and poor accuracy of carbon emission accounting data.

[0132] A specific embodiment of the present invention provides a method for analyzing the carbon footprint of domestic waste incineration disposal, the method is as follows Figure 1 As shown, the following steps are included:

[0133] S1: Determine the carbon footprint assessment boundary of waste incineration disposal and identify the categories of greenhouse gas emission sources covered in the waste incineration disposal process.

[0134] In an embodiment of the present invention, the carbon footprint assessment boundaries of waste incineration disposal include: production and transportation stage, waste incineration power generation stage, and solid waste treatment stage; the greenhouse gas emission source categories covered in the waste incineration disposal process include: greenhouse gas emission source categories in the production and transportation stage, greenhouse gas emission source categories in the waste incineration power generation stage, and greenhouse gas emission source categories in the solid waste treatment stage; greenhouse gas emission source categories in the production and transportation stage include greenhouse gas emissions in the process of collecting domestic waste and transporting it to the waste incineration power plant, and greenhouse gas emissions in the process of producing auxiliary fuels and chemicals and transporting them to the waste incineration power plant; the waste incineration power generation stage The categories of greenhouse gas emission sources include greenhouse gas emissions generated during the storage of domestic waste, greenhouse gas emissions generated during the combustion of fossil carbon in domestic waste, greenhouse gas emissions generated during the combustion of auxiliary fuels, greenhouse gas emissions generated during the flue gas purification process, greenhouse gas emissions generated during the leachate treatment process, greenhouse gas emissions generated during the fly ash chelation pretreatment process, and greenhouse gas emissions generated during purchased electricity; the categories of greenhouse gas emission sources in the solid waste treatment stage include greenhouse gas emissions generated during the transportation of slag from the waste incineration power plant to the disposal site and during the treatment process, and greenhouse gas emissions generated during the transportation of fly ash from the waste incineration power plant to the disposal site and during the treatment process.

[0135] S2: Construct a carbon footprint evaluation calculation model for waste incineration disposal, and calculate the greenhouse gas emissions of the different greenhouse gas emission source categories according to the carbon footprint evaluation boundaries.

[0136] In an embodiment of the present invention, the formula for calculating the greenhouse gas emissions of the different greenhouse gas emission source categories according to the carbon footprint evaluation boundary is:

[0137] E 总 =E1+E2+E3

[0138] Among them, E 总 is the total carbon emissions during waste incineration disposal;

[0139] E1 is the total carbon emissions during the production and transportation stages;

[0140] E2 is the total carbon emissions during the waste incineration power generation stage;

[0141] E3 is the total carbon emissions during the solid waste treatment stage;

[0142] The formula for calculating the total carbon emissions E1 of the production and transportation stage is:

[0143] E1=E L +E F +E H

[0144] Among them, E L Carbon emissions from waste collection and transportation to waste-to-energy plants;

[0145] E F Carbon emissions from the production and transportation of auxiliary fuel to waste-to-energy plants;

[0146] E H Carbon emissions from the production and transportation of chemicals to waste incineration power plants.

[0147] Calculate the E L , the E F and the E H The formula is:

[0148] The formula for calculating EL is:

[0149] E L =AD L,e ×EF e +AD L,c ×EF c ×L L

[0150] Among them, AD L,e The electricity consumption during the collection and transportation of garbage;

[0151] EF e is the provincial power grid carbon emission factor;

[0152] AD L,c Diesel consumption during waste collection and transportation;

[0153] EF c The carbon emission factor of diesel vehicles burning diesel is different for diesel vehicles with different loads.

[0154] L L The distance that garbage is transported from the collection point to the waste-to-energy plant;

[0155] Calculate E F The formula is:

[0156]

[0157] Among them, AD F,i is the transportation volume of auxiliary fuel i, i is the type of auxiliary fuel, AD F,t is the natural gas delivery volume, AD F,c is the transport volume of diesel, AD F,m is the transportation volume of coal, and the transportation volume of auxiliary fuel i is equal to the total consumption of auxiliary fuel i in the waste incineration power plant;

[0158] EFG,i is the carbon emission factor in the production process of auxiliary fuel i, EF G,t Represents the carbon emission factor in the natural gas production process, EF G,c Represents the carbon emission factor in the diesel production process, EF G,m Represents the carbon emission factor in the coal production process;

[0159] AD F,e,i The power consumption during the transportation of auxiliary fuel i is as follows: auxiliary fuel diesel and coal can be transported by electric trains, and the power consumption is the power consumption of electric trains; natural gas is transported by pipelines, and the power consumption is the power consumption of compressors;

[0160] AD F,c,i To supplement the diesel consumption in the transportation process of auxiliary fuel i, auxiliary fuel diesel and coal can also be transported by diesel trucks;

[0161] L F,i The transportation distance of auxiliary fuel i from the manufacturer to the waste incineration power plant;

[0162] Calculate E H The formula is:

[0163] E H =∑ j＝a,n,x,h,q,f [AD H,j ×EF G,j +AD H,e,j ×EF e +AD H,c,j ×(EF G,c +EF c ×L H,j )]

[0164] Among them, AD H,j is the transport volume of chemical agent j, j is the type of chemical agent, AD H,a is the transport volume of ammonia water, AD H,n is the transport volume of urea, AD H,x is the transportation volume of slaked lime, AD H,h is the transport volume of activated carbon, AD H,q is the transport volume of sodium hydroxide, AD H,f is the transportation volume of fly ash chelating agent, and the transportation volume of chemical agent j is equal to the total consumption of chemical agent j in the waste incineration power plant;

[0165] EF G,j is the carbon emission factor in the production process of chemical agent j, EF G,a is the carbon emission factor in the ammonia production process, EF G,n is the carbon emission factor in the urea production process, EF G,x is the carbon emission factor in the slaked lime production process, EFG,h is the carbon emission factor in the activated carbon production process, EF G,q is the carbon emission factor in the sodium hydroxide production process, EF G,f is the carbon emission factor during the production of fly ash chelating agents;

[0166] AD H,e,j The power consumption during the transportation of chemical agent j;

[0167] AD H,c,j is the diesel consumption during the transportation of chemical agent j;

[0168] L H,j is the transportation distance of chemical agent j from the manufacturer to the waste incineration power plant.

[0169] The formula for calculating the total carbon emissions E2 in the waste incineration power generation stage is:

[0170] E2=E st +E in +E in,f +E pu +E pe +E ch +E out,e

[0171] Among them, E st Carbon emissions generated during the storage of domestic waste;

[0172] E in Carbon emissions from the combustion of fossil carbon in domestic waste;

[0173] E in,f Carbon emissions generated during the combustion of auxiliary fuels;

[0174] E pu Greenhouse gas emissions from the flue gas cleaning process;

[0175] E pe is the carbon emissions generated during leachate treatment;

[0176] E ch Carbon emissions from fly ash chelation pretreatment;

[0177] E out,e Carbon emissions from purchased electricity.

[0178] Calculate the E st 、E in 、E in,f 、E pu 、E pe 、E ch and E out,e The formula is:

[0179] Among them, E st = 0, the methane produced by the fermentation of garbage in the garbage pit enters the incinerator together with other gases and is burned and converted into CO2. This part of CO2 comes from the fermentation of biochar and can be excluded from greenhouse gas emissions, that is, E st =0;

[0180] Calculate E in The formula is:

[0181] E in =E in,CO2 +E in,CH4 +E in,N2O

[0182] Among them, E in,CO2 CO2 emissions from the combustion of fossil carbon in garbage;

[0183] E in,CH4 Carbon emissions corresponding to CH4 emissions from incomplete combustion of fossil carbon in garbage;

[0184] E in,N2O Carbon emissions corresponding to N2O emissions generated during the combustion of fossil carbon in garbage and flue gas purification;

[0185]

[0186] Among them, W w It is the wet weight of the domestic waste entering the factory;

[0187] ω is the moisture content of the domestic waste samples entering the factory;

[0188] WF f is the proportion of component f in the garbage dry matter,

[0189] CF f is the carbon proportion in component f in the garbage dry matter;

[0190] FCF f is the proportion of fossil carbon in component f to total carbon in the dry matter of garbage;

[0191] OF is the carbon oxidation rate of waste incineration;

[0192] f is the component of the dry matter of garbage, including paper, rubber, plastic, kitchen waste, bamboo and wood, etc.;

[0193]

[0194] Among them, W f It is the wet weight of domestic garbage entering the furnace;

[0195] is the CH4 emission factor associated with waste incineration;

[0196] is the global warming potential of CH4;

[0197]

[0198] in, is the N2O emission factor associated with waste incineration;

[0199] The global warming potential of N2O;

[0200] Calculate E in,f The formula is:

[0201] E in,f =AD f,i ×EF i

[0202] Among them, AD f，i is the consumption of auxiliary fuel i;

[0203] EF i is the carbon emission factor of auxiliary fuel i;

[0204] i is the type of auxiliary fuel, including natural gas, diesel, and coal;

[0205] Among them, E pu = 0, waste incineration and flue gas purification is a continuous process, the N2O generated by waste incineration and the N2O generated by flue gas purification and denitrification are calculated uniformly. The calculation process is shown in Therefore, it is considered here that E pu =0;

[0206] Calculate E pe The formula is:

[0207]

[0208] in, CH4 emissions due to methane leakage during leachate treatment;

[0209] It is the N2O emission during leachate treatment;

[0210]

[0211] Among them, Q in is the amount of leachate entering the leachate treatment system;

[0212] C inis the COD mass concentration of the leachate entering the leachate treatment system;

[0213] Q out is the effluent volume of the leachate treatment system;

[0214] C out is the COD mass concentration in the effluent of the leachate treatment system;

[0215] η is the biogas production rate of the leachate treatment system;

[0216] β is the volume ratio of CH4 in the biogas produced by the leachate treatment system;

[0217] is the density of methane;

[0218] L is the CH4 leakage rate of the leachate system;

[0219]

[0220] in, is the N2O emission factor of the leachate treatment process;

[0221] Among them, E ch =0, the fly ash chelation pretreatment process mainly uses the electricity produced by the incineration plant and does not directly produce carbon emissions.

[0222] Calculate E out，e The formula is:

[0223] E out,e =AD out,e ×EF e

[0224] Among them, AD out，e The amount of electricity purchased for the waste incineration power generation stage.

[0225] The formula for calculating the total carbon emissions E3 in the solid waste treatment stage is:

[0226] E3=E sl,y +E sl,c +E fl,y +E fl,c

[0227] Among them, E sl,y Carbon emissions from transporting slag to disposal sites;

[0228] E sl,c Carbon emissions from slag disposal;

[0229] E fl,y Carbon emissions from transporting slag to disposal sites;

[0230] Efl,c Carbon emissions generated during slag disposal.

[0231] Calculate the E sl,y 、E sl,c 、E fl,y and E fl,c The formula is:

[0232] Calculate E sl，y The formula is:

[0233] E sl,y =AD sl,e ×EF e +AD sl,c ×(EF G,c +EF c ×L sl )

[0234] Among them, AD sl，e The power consumption during slag transportation;

[0235] AD sl，c It is the diesel consumption in the process of slag transportation;

[0236] L sl is the transportation distance of slag from the waste incineration power plant to the landfill;

[0237] Among them, E sl,c = 0, greenhouse gases are not directly emitted during slag landfill, and it is considered that E sl,c is 0;

[0238] Calculate E fl,y The formula is:

[0239] E fl,y =AD fl,e ×EF e +AD fl,c ×(EF G,c +EF c ×L fl )

[0240] Among them, AD fl，e The power consumption during the transportation of fly ash;

[0241] AD fl，c is the diesel consumption during fly ash transportation;

[0242] L fl is the transportation distance of fly ash from the waste incineration power plant to the landfill;

[0243] Among them, E fl,c = 0, the fly ash landfill process does not directly emit greenhouse gases, and it is considered that E sl,c is 0.

[0244] S3: Collect relevant data of the carbon footprint assessment boundary.

[0245] In the embodiment of the present invention, the data collected from the production and transportation phase, the data from the waste incineration power generation phase, and the data from the solid waste treatment phase are as follows: Figure 3 shown.

[0246] S4: Substitute the collected relevant data of the carbon footprint evaluation boundary into the constructed waste incineration disposal carbon footprint evaluation calculation model, obtain the greenhouse gas emissions of each emission source by calculation, and then summarize the data to obtain the total greenhouse gas emissions of the entire waste incineration disposal process.

[0247] In the embodiment of the present invention, the total greenhouse gas emissions during the entire process of waste incineration are collected, specifically as follows: Figure 2 shown.

[0248] S5: Analyze and evaluate the carbon emissions from waste incineration based on the calculated greenhouse gas emissions from different greenhouse gas emission source categories during the waste incineration process and the total greenhouse gas emissions from the entire waste incineration process, and propose carbon reduction measures for key emission sources accordingly.

[0249] In an embodiment of the present invention, carbon reduction measures include: carbon substitution: replacing traditional fossil energy with clean energy; improving energy efficiency: reducing energy consumption and carbon emissions by upgrading equipment, improving processes and energy-saving technologies; eliminating high-carbon energy: gradually reducing the use of high-carbon energy such as coal and oil, and turning to low-carbon energy; carbon trading: guiding the low-carbon transformation of industrial structure through carbon emission rights pricing; new energy revolution: photovoltaic, wind power and other new energy will become the backbone of carbon neutrality; negative carbon technology: agricultural and forestry carbon sinks and carbon storage technologies provide support for carbon neutrality.

[0250] The beneficial effects of the present invention are as follows: the present invention constructs a carbon footprint evaluation and calculation model suitable for the incineration and disposal of domestic waste, evaluates and analyzes the carbon emissions of the entire life cycle of the incineration and disposal of domestic waste, solves the problems of incomplete carbon footprint analysis of existing waste incineration and disposal and poor accuracy of carbon emission accounting data, obtains more comprehensive and accurate greenhouse gas emission data of waste incineration and disposal, and accurately grasps the greenhouse gas emission level of domestic waste in the entire life cycle; the present invention calculates and analyzes the greenhouse gas emissions in the entire life cycle of the incineration treatment of domestic waste, and accurately grasps the greenhouse gas emission level of domestic waste from the generation to the resource utilization; the present invention combines the actual process of domestic waste incineration, comprehensively identifies the greenhouse gas emission sources in the process of waste incineration and disposal, constructs a carbon footprint evaluation and calculation model suitable for the incineration and disposal of domestic waste, and obtains more comprehensive and accurate greenhouse gas emission data of waste incineration and disposal.

[0251] The above is only an embodiment of the present invention, and the common knowledge such as the known specific technical solutions or characteristics in the solution is not described in detail here. It should be pointed out that for those skilled in the art, without departing from the solution of the present invention, several modifications and improvements can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the present invention and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. A method for analyzing carbon footprint of domestic waste incineration disposal, characterized in that: The method comprises: S1: Determine the carbon footprint assessment boundary of waste incineration and identify the categories of greenhouse gas emission sources covered in the waste incineration process; S2: constructing a carbon footprint evaluation calculation model for waste incineration disposal, and calculating the greenhouse gas emissions of the different greenhouse gas emission source categories according to the carbon footprint evaluation boundary; S3: Collect relevant data of the carbon footprint assessment boundary; S4: Substituting the collected data on the carbon footprint evaluation boundary into the constructed waste incineration disposal carbon footprint evaluation calculation model, obtaining the greenhouse gas emissions of each emission source by calculation, and then aggregating the data to obtain the total greenhouse gas emissions of the entire waste incineration disposal process; S5: Analyze and evaluate the carbon emissions from waste incineration based on the calculated greenhouse gas emissions from different greenhouse gas emission source categories during the waste incineration process and the total greenhouse gas emissions from the entire waste incineration process, and propose carbon reduction measures for key emission sources accordingly.

2. The method for analyzing carbon footprint of incineration of domestic waste according to claim 1, characterized in that: The steps of determining the carbon footprint assessment boundary of waste incineration disposal and identifying the categories of greenhouse gas emission sources covered in the waste incineration disposal process include: The carbon footprint assessment boundaries of waste incineration disposal include: production and transportation stage, waste incineration power generation stage, and solid waste treatment stage; The categories of greenhouse gas emission sources covered in the waste incineration disposal process include: greenhouse gas emission source categories in the production and transportation stages, greenhouse gas emission source categories in the waste incineration power generation stage, and greenhouse gas emission source categories in the solid waste treatment stage.

3. A method for analyzing carbon footprint of domestic waste incineration according to claim 2, characterized in that: The greenhouse gas emission source categories in the production and transportation stage include greenhouse gas emissions during the collection and transportation of domestic waste to waste incineration power plants, and greenhouse gas emissions during the production and transportation of auxiliary fuels and chemicals to waste incineration power plants; The categories of greenhouse gas emission sources in the waste incineration power generation stage include greenhouse gas emissions generated during the storage of domestic waste, greenhouse gas emissions generated by the combustion of fossil carbon in domestic waste, greenhouse gas emissions generated during the combustion of auxiliary fuels, greenhouse gas emissions generated during the flue gas purification process, greenhouse gas emissions generated during the leachate treatment process, greenhouse gas emissions generated during the fly ash chelation pretreatment process, and greenhouse gas emissions generated by purchased electricity; The categories of greenhouse gas emission sources in the solid waste treatment stage include greenhouse gas emissions generated during the transportation of slag from the waste incineration power plant to the disposal site and the treatment process, and greenhouse gas emissions generated during the transportation of fly ash from the waste incineration power plant to the disposal site and the treatment process.

4. A method for analyzing carbon footprint of domestic waste incineration disposal according to claim 3, characterized in that: The formula for constructing the carbon footprint evaluation calculation model for waste incineration disposal and calculating the greenhouse gas emissions of different greenhouse gas emission source categories according to the carbon footprint evaluation boundary is: <h2 style=";text-align:left;direction:ltr">E<h2 style=";text-align:left;direction:ltr"> 总 <h2 style=";text-align:left;direction:ltr"> =E1+E2+E3 Among them, E 总 is the total carbon emissions during waste incineration disposal; E1 is the total carbon emissions during the production and transportation stages; E2 is the total carbon emissions during the waste incineration power generation stage; E3 is the total carbon emissions in the solid waste treatment stage.

5. A method for analyzing carbon footprint of domestic waste incineration disposal according to claim 4, characterized in that: The formula for calculating the total carbon emissions E1 of the production and transportation stage is: E1=E L +E F +E H Among them, E L Carbon emissions from waste collection and transportation to waste-to-energy plants; E F Carbon emissions from the production and transportation of auxiliary fuel to waste-to-energy plants; E H Carbon emissions from the production and transportation of chemicals to waste incineration power plants.

6. A method for analyzing carbon footprint of domestic waste incineration disposal according to claim 5, characterized in that: Calculate the E L , the E F and the E H The formula is: The formula for calculating EL is: AND L =AD L,e ×EF e +AD L,c ×EF c ×L L Among them, AD L,e The electricity consumption during the collection and transportation of garbage; EF e is the provincial power grid carbon emission factor; AD L,c Diesel consumption during waste collection and transportation; EF c The carbon emission factor of diesel vehicles burning diesel is different for diesel vehicles with different loads. L L The distance that garbage is transported from the collection point to the waste-to-energy plant; Calculate E F The formula is: Among them, AD F,i is the transportation volume of auxiliary fuel i, i is the type of auxiliary fuel, AD F,t is the natural gas delivery volume, AD F,c is the transport volume of diesel, AD F,m is the transportation volume of coal, and the transportation volume of auxiliary fuel i is equal to the total consumption of auxiliary fuel i in the waste incineration power plant; EF G,i is the carbon emission factor in the production process of auxiliary fuel i, EF G,t Represents the carbon emission factor in the natural gas production process, EF G,c Represents the carbon emission factor in the diesel production process, EF G,m Represents the carbon emission factor in the coal production process; AD F,e,i The power consumption during the transportation of auxiliary fuel i. Auxiliary fuel diesel and coal can be transported by electric trains, and the power consumption is the power consumption of electric trains. Natural gas is transported by pipelines, and the power consumption is the power consumption of compressors. AD F,c,i To supplement the diesel consumption in the transportation process of auxiliary fuel i, auxiliary fuel diesel and coal can also be transported by diesel trucks; L F,i The transportation distance of auxiliary fuel i from the manufacturer to the waste incineration power plant; Calculate E H The formula is: E H =∑ j＝a,n,x,h,q,f [AD H,j ×EF G,j +AD H,e,j ×EF e +AD H,c,j ×(EF G,c +EF c ×L H,j )] Among them, AD H,j is the transport volume of chemical agent j, j is the type of chemical agent, AD H,a is the transport volume of ammonia water, AD H,n is the transport volume of urea, AD H,x is the transportation volume of slaked lime, AD H,h is the transport volume of activated carbon, AD H,q is the transport volume of sodium hydroxide, AD H,f is the transportation volume of fly ash chelating agent, and the transportation volume of chemical agent j is equal to the total consumption of chemical agent j in the waste incineration power plant; EF G,j is the carbon emission factor in the production process of chemical agent j, EF G,a is the carbon emission factor in the ammonia production process, EF G,n is the carbon emission factor in the urea production process, EF G,x is the carbon emission factor in the slaked lime production process, EF G,h is the carbon emission factor in the activated carbon production process, EF G,q is the carbon emission factor in the sodium hydroxide production process, EF G,f is the carbon emission factor during the production of fly ash chelating agents; AD H,e,j The power consumption during the transportation of chemical agent j; AD H,c,j is the diesel consumption during the transportation of chemical agent j; L H,j is the transportation distance of chemical agent j from the manufacturer to the waste incineration power plant.

7. A method for analyzing carbon footprint of domestic waste incineration according to claim 4, characterized in that: The formula for calculating the total carbon emissions E2 in the waste incineration power generation stage is: E2=E st +E in +E in,f +E pu +E pe +E ch +E out,e Among them, E st Carbon emissions generated during the storage of domestic waste; E in Carbon emissions from the combustion of fossil carbon in domestic waste; E in,f Carbon emissions generated during the combustion of auxiliary fuels; E pu Greenhouse gas emissions from the flue gas cleaning process; E pe is the carbon emissions generated during leachate treatment; E ch Carbon emissions from fly ash chelation pretreatment; E out,e Carbon emissions from purchased electricity.

8. A method for analyzing carbon footprint of domestic waste incineration disposal according to claim 7, characterized in that: Calculate the E st 、E in 、E in,f 、E pu 、E pe 、E ch and E out,e The formula is: Among them, E st = 0, the methane produced by the fermentation of garbage in the garbage pit enters the incinerator together with other gases and is burned and converted into CO2. This part of CO2 comes from the fermentation of biochar and can be excluded from greenhouse gas emissions, that is, E st =0; Calculate E in The formula is: AND in =And in,CO2 +E in,CH4 +E in,N2O Among them, E in,CO2 CO2 emissions from the combustion of fossil carbon in garbage; E in,CH4 Carbon emissions corresponding to CH4 emissions from incomplete combustion of fossil carbon in garbage; E in,N2O Carbon emissions corresponding to N2O emissions generated during the combustion of fossil carbon in garbage and flue gas purification; Among them, W w It is the wet weight of the domestic waste entering the factory; ω is the moisture content of the domestic waste samples entering the factory; WF f is the proportion of component f in the garbage dry matter, CF f is the carbon proportion in component f of the garbage dry matter; FCF f is the proportion of fossil carbon in component f to total carbon in the dry matter of garbage; OF is the carbon oxidation rate of waste incineration; f is the component in the garbage dry matter; Among them, W f It is the wet weight of domestic garbage entering the furnace; is the CH4 emission factor associated with waste incineration; is the global warming potential of CH4; in, is the N2O emission factor associated with waste incineration; The global warming potential of N2O; Calculate E in,f The formula is: AND in,f =AD f,i ×EF i Among them, AD f，i is the consumption of auxiliary fuel i; EF i is the carbon emission factor of auxiliary fuel i; i is the auxiliary fuel type; Among them, E pu = 0, waste incineration and flue gas purification is a continuous process, the N2O generated by waste incineration and the N2O generated by flue gas purification and denitrification are calculated uniformly. The calculation process is shown in Therefore, it is considered here that E pu =0; Calculate E pe The formula is: in, CH4 emissions due to methane leakage during leachate treatment; It is the N2O emission during leachate treatment; Among them, Q in is the amount of leachate entering the leachate treatment system; C in is the COD mass concentration of the leachate entering the leachate treatment system; Q out is the effluent volume of the leachate treatment system; C out is the COD mass concentration in the effluent of the leachate treatment system; η is the biogas production rate of the leachate treatment system; β is the volume ratio of CH4 in the biogas produced by the leachate treatment system; is the density of methane; L is the CH4 leakage rate of the leachate system; in, is the N2O emission factor of the leachate treatment process; Among them, E ch =0, the fly ash chelation pretreatment process mainly uses the electricity produced by the incineration plant and does not directly produce carbon emissions. Calculate E out，e The formula is: AND out,e =AD out,e ×EF e Among them, AD out，e The amount of electricity purchased for the waste incineration power generation stage.

9. A method for analyzing carbon footprint of domestic waste incineration disposal according to claim 4, characterized in that: The formula for calculating the total carbon emissions E3 in the solid waste treatment stage is: E3=E sl,y +E sl,c +E fl,y +E fl,c Among them, E sl,y Carbon emissions from transporting slag to disposal sites; E sl,c Carbon emissions from slag disposal; E fl,y Carbon emissions from transporting slag to disposal sites; E fl,c Carbon emissions generated during slag disposal.

10. A method for analyzing carbon footprint of domestic waste incineration disposal according to claim 9, characterized in that: Calculate the E sl,y 、E sl,c 、E fl,y and E fl,c The formula is: Calculate E sl，y The formula is: E sl,y =AD sl,e ×EF e +AD sl,c ×(EF G,c +EF c ×L sl ) Among them, AD sl，e The power consumption during slag transportation; AD sl，c It is the diesel consumption in the process of slag transportation; L sl is the transportation distance of slag from the waste incineration power plant to the landfill; Among them, E sl,c = 0, greenhouse gases are not directly emitted during slag landfill, and it is considered that E sl,c is 0; Calculate E fl,y The formula is: E fl,y =AD fl,e ×EF e +AD fl,c ×(EF G,c +EF c ×L fl ) Among them, AD fl，e The power consumption during the transportation of fly ash; AD fl，c is the diesel consumption during fly ash transportation; L fl is the transportation distance of fly ash from the waste incineration power plant to the landfill; Among them, E fl,c = 0, the fly ash landfill process does not directly emit greenhouse gases, and it is considered that E sl,c is 0.

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