Direct carbon emission determination method for mixed combustion of fossil fuel and biomass fuel

Abstract

The invention discloses a direct carbon emission determination method for mixed combustion of fossil fuel and biomass fuel, and relates to the technical field of carbon emission, the method comprises the following steps: determining a mixed combustion mode; the multi-fuel combustion mode comprises solid and solid fuel multi-fuel combustion, solid and liquid fuel multi-fuel combustion, solid and gas fuel multi-fuel combustion, liquid and liquid fuel multi-fuel combustion, liquid and gas fuel multi-fuel combustion and gas and gas fuel multi-fuel combustion; based on the multi-fuel combustion mode, fuel consumption and an emission factor of fuel combustion are obtained, and based on the fuel consumption and the emission factor of fuel combustion, direct carbon emission is obtained through calculation; or the flue gas amount, the volume fraction of CO2 in the dry smoke and the multifuel combustion conversion coefficient are obtained, and the direct carbon emission is calculated based on the flue gas amount, the volume fraction of CO2 in the dry smoke and the multifuel combustion conversion coefficient. According to the method, carbon emission generated by combustion of the biomass fuel can be distinguished, and the carbon reduction effect of the co-combustion biomass fuel can be reasonably and accurately evaluated.

Description

Technical Field

[0001] The present application relates to the technical field of carbon emissions, and particularly to a method for determining the direct carbon emissions of the mixed combustion of fossil fuels and biomass fuels. Background Art

[0002] During the use of combustion devices such as boilers, a large amount of fossil fuels such as coal, oil, and natural gas are consumed, resulting in a large amount of greenhouse gas emissions. Biomass and its derived fuels (hereinafter referred to as biomass fuels) are carbon-neutral fuels, and the carbon dioxide emissions generated by combustion are not included in the carbon emissions. Therefore, biomass fuels have been widely used in recent years. However, when measuring the flue gas components, the conventional carbon dioxide concentration measurement method cannot distinguish the source of carbon dioxide, and thus cannot deduct the carbon dioxide emissions generated by biomass combustion. Therefore, it is necessary to establish a method for determining the direct carbon emissions during the mixed combustion of fossil fuels and biomass fuels to achieve a reasonable and accurate assessment of the carbon reduction effect of the mixed combustion of biomass fuels and to promote the popularization and application of low-carbon / zero-carbon fuels. Summary of the Invention

[0003] The purpose of the present application is to provide a method for determining the direct carbon emissions of the mixed combustion of fossil fuels and biomass fuels, which can distinguish the carbon emissions generated by the combustion of biomass fuels and achieve a reasonable and accurate assessment of the carbon reduction effect of the mixed combustion of biomass fuels.

[0004] To achieve the above purpose, the present application provides the following solutions:

[0005] The present application provides a method for determining the direct carbon emissions of the mixed combustion of fossil fuels and biomass fuels, and the method for determining the direct carbon emissions of the mixed combustion of fossil fuels and biomass fuels includes:

[0006] Determine the co-combustion mode; the co-combustion mode includes: co-combustion of solid and solid fuels, co-combustion of solid and liquid fuels, co-combustion of solid and gas fuels, co-combustion of liquid and liquid fuels, co-combustion of liquid and gas fuels, and co-combustion of gas and gas fuels.

[0007] Based on the co-combustion mode, obtain the fuel consumption and the emission factor of fuel combustion, and calculate the direct carbon emissions based on the fuel consumption and the emission factor of fuel combustion; or obtain the flue gas volume, the volume fraction of CO2 in the dry flue gas, and the co-combustion conversion coefficient, and calculate the direct carbon emissions based on the flue gas volume, the volume fraction of CO2 in the dry flue gas, and the co-combustion conversion coefficient.

[0008] According to the specific embodiments provided by the present application, the following technical effects are disclosed:

[0009] The present application provides a method for determining the direct carbon emissions of the co - combustion of fossil fuels and biomass fuels. First, the co - combustion mode is determined. Then, the direct carbon emissions calculated based on fuel conversion can be obtained by measuring the fuel consumption and the emission factors of fuel combustion, or the direct carbon emissions directly measured from the flue gas can be obtained by measuring the flue gas volume, the volume fraction of CO2 in the dry flue gas, and the co - combustion conversion coefficient. The present application fully considers the carbon neutrality of biomass fuels. Compared with the prior art, the present application can solve the problem that the carbon emissions cannot be distinguished and quantified when fossil fuels and biomass fuels are co - combusted in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0011] Figure 1 It is an application environment diagram of a method for determining the direct carbon emissions of the co - combustion of fossil fuels and biomass fuels in an embodiment of the present application.

[0012] Figure 2 It is a schematic flowchart of a method for determining the direct carbon emissions of the co - combustion of fossil fuels and biomass fuels provided by an embodiment of the present application.

[0013] Figure 3 It is an overall flowchart of a method for determining the direct carbon emissions of the co - combustion of fossil fuels and biomass fuels provided by an embodiment of the present application. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0014] The following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some embodiments of the present application, rather than all embodiments. Based on the embodiments of the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present application.

[0015] The purpose of the present application is to provide a method for determining the direct carbon emissions of the co - combustion of fossil fuels and biomass fuels, which has practical significance and practical value for accurately quantifying and evaluating the carbon reduction effect of biomass fuels by combustion equipment manufacturers, users, and testing institutions through the testing and calculation of the direct carbon emissions of the co - combustion of fossil fuels and biomass fuels.

[0016] To make the above objects, features, and advantages of the present application more apparent and understandable, the present application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0017] The method for determining the direct carbon emissions of the mixed combustion of fossil fuels and biomass fuels provided by the embodiments of the present application can be applied to an application environment as Figure 1 shown. Among them, the terminal 102 communicates with the server 104 through a network. The data storage system can store the data that the server 104 needs to process. The data storage system can be set up separately, integrated on the server 104, placed in the cloud, or on other servers. The terminal 102 can send the co-firing method to the server 104. The co-firing methods include: co-firing of solid and solid fuels, co-firing of solid and liquid fuels, co-firing of solid and gas fuels, co-firing of liquid and liquid fuels, co-firing of liquid and gas fuels, and co-firing of gas and gas fuels. After receiving the co-firing method, for the co-firing method, the server 104 obtains the fuel consumption and the emission factor of fuel combustion based on the co-firing method, and calculates the direct carbon emissions based on the fuel consumption and the emission factor of fuel combustion; or obtains the flue gas volume, the volume fraction of CO2 in the dry flue gas, and the co-firing conversion coefficient, and calculates the direct carbon emissions based on the flue gas volume, the volume fraction of CO2 in the dry flue gas, and the co-firing conversion coefficient. The server 104 can feedback the obtained direct carbon emissions to the terminal 102. In addition, in some embodiments, the method for determining the direct carbon emissions of the mixed combustion of fossil fuels and biomass fuels can also be implemented by the server 104 or the terminal 102 alone. For example, the terminal 102 can directly determine the direct carbon emissions for the co-firing method, or the server 104 can obtain the co-firing method from the data storage system and determine the direct carbon emissions for the co-firing method to be performed.

[0018] Among them, the terminal 102 can be, but is not limited to, various desktop computers, laptop computers, smart phones, and tablet computers. The server 104 can be implemented by an independent server or a server cluster composed of multiple servers, and can also be a cloud server.

[0019] In an exemplary embodiment, as Figure 2 and Figure 3 shown, a method for determining the direct carbon emissions of the mixed combustion of fossil fuels and biomass fuels is provided. This method is executed by a computer device, and can be specifically executed by a computer device such as a terminal or a server alone, or jointly executed by a terminal and a server. In the embodiments of the present application, taking this method applied to the Figure 1 server 104 as an example for illustration, the method includes the following steps:

[0020] S1: Determine the co - firing mode; the co - firing modes include: co - firing of solid and solid fuels, co - firing of solid and liquid fuels, co - firing of solid and gas fuels, co - firing of liquid and liquid fuels, co - firing of liquid and gas fuels, and co - firing of gas and gas fuels.

[0021] It should be noted that when co - firing solid and solid fuels, solid and liquid fuels, or solid and gas fuels, the mixed fuel is processed and calculated according to the solid fuel; when co - firing liquid and liquid fuels or liquid and gas fuels, the data is processed and calculated according to the liquid fuel; when co - firing gas and gas fuels, the data is processed and calculated according to the gas fuel.

[0022] S2: Based on the co - firing mode, obtain the fuel consumption and the emission factor of fuel combustion, and calculate the direct carbon emission based on the fuel consumption and the emission factor of fuel combustion; or obtain the flue gas volume, the volume fraction of CO2 in dry flue gas, and the co - firing conversion coefficient, and calculate the direct carbon emission based on the flue gas volume, the volume fraction of CO2 in dry flue gas, and the co - firing conversion coefficient.

[0023] Implementing the above steps S1 to S2 can solve the problem that the carbon emissions cannot be distinguished and quantified when fossil fuels and biomass fuels are co - fired in the prior art. At the same time, when using the method for determining the direct carbon emission of the co - firing of fossil fuels and biomass fuels proposed in this application, the carbon reduction effect of the co - fired biomass fuel can be quantitatively analyzed.

[0024] As an optional implementation method, in step S2, when obtaining the fuel consumption and the emission factor of fuel combustion, the calculation formula for calculating the direct carbon emission based on the fuel consumption and the emission factor of fuel combustion is the formula:

[0025] E f =B f ·EF c (1);

[0026] where, E f is the direct carbon emission generated by fuel combustion per unit time, kgCO2 / h; B f is the fuel consumption per unit time, kg / h or m 3 / h; EF c is the emission factor of fuel combustion, kgCO2 / kg or kgCO2 / m 3 .

[0027] As an alternative implementation, for solid or liquid mixed fuels containing biomass fuel, that is, when the co-firing method is co-firing of solid and solid fuels, co-firing of solid and liquid fuels, co-firing of solid and gas fuels, co-firing of liquid and liquid fuels, or co-firing of liquid and gas fuels, the calculation formula for the emission factor of fuel combustion is:

[0028]

[0029] Wherein, is the mass percentage of fossil fuel in the in-furnace mixed fuel, %; ω C.ar.c is the mass fraction of elemental carbon in the as-received basis of fossil fuel, %; OF c is the carbon oxidation rate of fossil fuel in the mixed fuel, %.

[0030] As an alternative implementation, for gas mixed fuels containing biomass fuel, that is, when the co-firing method is co-firing of gas and gas fuels, the calculation formula for the emission factor of fuel combustion is:

[0031]

[0032] Wherein, is the carbon dioxide density, kg / m 3 , which can be taken as 1.9638; is the volume fraction of fossil fuel gas in the gas mixed fuel, %; is the volume fraction of CO in fossil fuel gas, %; is the volume fraction of C m H n in fossil fuel gas, %, m is the number of carbon atoms in the hydrocarbon, and n is the number of hydrogen atoms in the hydrocarbon; is the volume fraction of CO2 in fossil fuel gas, %; OF c is the carbon oxidation rate of fossil fuel in the mixed fuel, %.

[0033] As an alternative implementation, for solid mixed fuels containing biomass fuel, that is, when the co-firing method is co-firing of solid and solid fuels, co-firing of solid and liquid fuels, or co-firing of solid and gas fuels, the calculation formula for the carbon oxidation rate of fossil fuel is:

[0034]

[0035] Wherein, ω as.ar.c is the mass fraction of ash in the as-received basis of fossil fuel, %; ω c.rs.m is the mass fraction of average combustibles in ash residue, %; ω s is the mass fraction of furnace slag in the total ash of fuel, %; ω clis the mass fraction of coal leakage or sedimentation ash in the total ash of the fuel, %; ω as is the mass fraction of fly ash in the total ash of the fuel, %; ω c.s is the mass fraction of combustibles in the slag, %; ω c.cl is the mass fraction of combustibles in the coal leakage or sedimentation ash, %; ω c.as is the mass fraction of combustibles in the fly ash, %.

[0036] As an optional implementation manner, for liquid mixed fuels and gas mixed fuels containing biomass fuels, that is, when the co-firing method is liquid-liquid fuel co-firing, liquid-gas fuel co-firing, or gas-gas fuel co-firing, the calculation formula for the carbon oxidation rate of fossil fuels is:

[0037]

[0038] Among them, is the volume fraction of CO2 in the dry flue gas, %; is the volume fraction of CO in the dry flue gas, %; is C in the dry flue gas m H n The volume fraction of, %, m is the number of carbon atoms in the hydrocarbon, and n is the number of hydrogen atoms in the hydrocarbon.

[0039] As an optional implementation manner, in step S2, obtain the flue gas volume, the volume fraction of CO2 in the dry flue gas, and the co-firing conversion coefficient. Based on the flue gas volume, the volume fraction of CO2 in the dry flue gas, and the co-firing conversion coefficient, the calculation formula for the direct carbon emission is:

[0040]

[0041] Among them, E f is the direct carbon emission generated by fuel combustion per unit time, kgCO2 / h; is the carbon dioxide density, kg / m 3 , and 1.9638 can be taken; is the volume fraction of CO2 in the dry flue gas, %; V fg.d ′ is the dry flue gas volume flow rate, m 3 / h; ψ is the co-firing conversion coefficient.

[0042] As an optional implementation manner, for solid mixed fuels containing biomass fuels, that is, when the co-firing method is solid-solid fuel co-firing, solid-liquid fuel co-firing, or solid-gas fuel co-firing, the calculation formula for the co-firing conversion coefficient is:

[0043]

[0044] Among them, is the mass percentage of biomass in the fuel mixture fed into the furnace, %; is the mass percentage of fossil fuel in the fuel mixture fed into the furnace, %; ω C.ar.b is the mass fraction of elemental carbon in the as-received biomass fuel, %; ω as.ar.b is the mass fraction of ash in the as-received biomass fuel, %; ω C.ar.c is the mass fraction of elemental carbon in the as-received fossil fuel, %; ω as.ar.c is the mass fraction of ash in the as-received fossil fuel, %; ω c.rs.m is the mass fraction of the average combustible matter in the ash residue, %.

[0045] As an alternative embodiment, for a liquid fuel mixture containing biomass fuel, i.e., when the co-firing method is co-firing of liquid and liquid fuels or co-firing of liquid and gas fuels, the calculation formula for the co-firing conversion coefficient is:

[0046]

[0047] wherein, is the mass percentage of biomass in the fuel mixture fed into the furnace, %; is the mass percentage of fossil fuel in the fuel mixture fed into the furnace, %; ω C.ar.c is the mass fraction of elemental carbon in the as-received fossil fuel, %; ω C.ar.b is the mass fraction of elemental carbon in the as-received biomass fuel, %.

[0048] As an alternative embodiment, for a gas fuel mixture containing biomass fuel, i.e., when the co-firing method is co-firing of gas and gas fuels, the calculation formula for the co-firing conversion coefficient is:

[0049]

[0050] wherein, is the volume fraction percentage of biomass-derived gas in the gas fuel mixture, %; is the volume fraction percentage of fossil fuel gas in the gas fuel mixture, %; is the volume fraction of CO in the biomass-derived gas, %; is C in the biomass-derived gas m H n volume fraction, %; m is the number of carbon atoms in the hydrocarbon; n is the number of hydrogen atoms in the hydrocarbon; is the volume fraction of CO2 in the biomass-derived gas, %; is the volume fraction of CO in the fossil fuel gas, %; is C in the fossil fuel gas m H n volume fraction, %; is the volume fraction of CO2 in the fossil fuel gas, %.

[0051] Compared with the prior art, the present application can solve the problem that the carbon emissions cannot be distinguished and quantified when fossil fuels and biomass fuels are co-fired in the prior art. At the same time, when using the method for determining the direct carbon emissions of the co-firing of fossil fuels and biomass fuels proposed in the present application, the carbon reduction effect of the co-fired biomass fuel can be quantitatively analyzed.

[0052] The present application also provides an application scenario that applies the above method for determining the direct carbon emissions of the co-firing of fossil fuels and biomass fuels. Specifically: The method for determining the direct carbon emissions of the co-firing of fossil fuels and biomass fuels provided in this embodiment can be applied in a carbon emission scenario. The carbon emission scenario includes: a co-firing method determination link and a direct carbon emission calculation link; First, determine the co-firing method; The co-firing methods include: co-firing of solid and solid fuels, co-firing of solid and liquid fuels, co-firing of solid and gas fuels, co-firing of liquid and liquid fuels, co-firing of liquid and gas fuels, and co-firing of gas and gas fuels; Then, based on the co-firing method, obtain the fuel consumption and the emission factor of fuel combustion, and based on the fuel consumption and the emission factor of fuel combustion, the direct carbon emissions can be calculated; Or obtain the flue gas volume, the volume fraction of CO2 in the dry flue gas, and the co-firing conversion coefficient, and based on the flue gas volume, the volume fraction of CO2 in the dry flue gas, and the co-firing conversion coefficient, the direct carbon emissions can be calculated.

[0053] The technical features of the above embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope described in this specification.

[0054] Specific examples are used in this article to elaborate on the principle and implementation manner of the present application. The description of the above embodiments is only used to help understand the method and its core idea of the present application; At the same time, for those of ordinary skill in the art, according to the idea of the present application, there will be changes in the specific implementation manner and application scope. In summary, the content of this specification should not be construed as a limitation to the present application.

Claims

1. A method for determining direct carbon emissions from the mixed combustion of fossil fuels and biomass fuels, characterized in that: The method for determining direct carbon emissions from the mixed combustion of fossil fuels and biomass fuels includes: Determine the mixed combustion mode; the mixed combustion mode includes: mixed combustion of solid and solid fuel, mixed combustion of solid and liquid fuel, mixed combustion of solid and gas fuel, mixed combustion of liquid and liquid fuel, mixed combustion of liquid and gas fuel, and mixed combustion of gas and gas fuel; Based on the co-firing method, the fuel consumption and the emission factor of the fuel combustion are obtained, and based on the fuel consumption and the emission factor of the fuel combustion, the direct carbon emissions are calculated; or the flue gas volume, the volume fraction of CO2 in the dry smoke and the co-firing conversion coefficient are obtained, and based on the flue gas volume, the volume fraction of CO2 in the dry smoke and the co-firing conversion coefficient, the direct carbon emissions are calculated.

2. The method for determining direct carbon emissions from the mixed combustion of fossil fuels and biomass fuels according to claim 1, characterized in that: The fuel consumption and the emission factor of the fuel combustion are obtained, and based on the fuel consumption and the emission factor of the fuel combustion, the calculation formula for the direct carbon emissions is calculated as follows: E f =B f ·EF c ; Among them, E f B is the direct carbon emission produced by fuel combustion per unit time, kgCO2 / h; f Fuel consumption per unit time, kg / h or m 3 / h; EF c is the emission factor of fuel combustion, kgCO2 / kg or kgCO2 / m 3 .

3. The method for determining direct carbon emissions from the mixed combustion of fossil fuels and biomass fuels according to claim 2, characterized in that: When the mixed combustion mode is mixed combustion of solid and solid fuel, mixed combustion of solid and liquid fuel, mixed combustion of solid and gas fuel, mixed combustion of liquid and liquid fuel, or mixed combustion of liquid and gas fuel, the calculation formula of the emission factor of fuel combustion is: in, is the mass proportion of fossil fuel in the mixed fuel entering the furnace, %; ω C.ar.c is the mass fraction of elemental carbon in the fossil fuel received basis, %; OF c is the carbon oxidation rate of fossil fuel in the mixed fuel, %.

4. The method for determining direct carbon emissions from the mixed combustion of fossil fuels and biomass fuels according to claim 2, characterized in that: When the mixed combustion mode is mixed combustion of gas and gas fuel, the calculation formula of the emission factor of fuel combustion is: in, is the density of carbon dioxide, kg / m 3 ; is the volume fraction of fossil fuel gas in the gas mixed fuel, %; is the volume fraction of CO in fossil fuel gas, %; C in fossil fuel gas m H n Volume fraction, %; m is the number of carbon atoms in the hydrocarbon; n is the number of hydrogen atoms in the hydrocarbon; is the volume fraction of CO2 in fossil fuel gas, %; OF c is the carbon oxidation rate of fossil fuel in the mixed fuel, %.

5. The method for determining direct carbon emissions from the mixed combustion of fossil fuels and biomass fuels according to claim 3, characterized in that: When the mixed combustion mode is mixed combustion of solid and solid fuel, mixed combustion of solid and liquid fuel, or mixed combustion of solid and gas fuel, the calculation formula of the carbon oxidation rate of fossil fuel is: Among them, ω as.ar.c is the mass fraction of the received ash content of fossil fuel, %; ω c.rs.m is the mass fraction of average combustible matter in ash, %; ω s is the mass fraction of slag in the total ash of fuel, %; ω cl is the mass fraction of leaked coal or sedimentation ash in the total ash of fuel, %; ω as is the mass fraction of fly ash in the total ash content of fuel, %; ω c.s is the mass fraction of combustible matter in the slag, %; ω c.cl is the mass fraction of combustible matter in leaked coal or sedimentation ash, %; ω c.as is the mass fraction of combustible matter in fly ash, %.

6. The method for determining direct carbon emissions from the mixed combustion of fossil fuels and biomass fuels according to claim 3 or 4, characterized in that: When the mixed combustion mode is mixed combustion of liquid and liquid fuel, mixed combustion of liquid and gas fuel, or mixed combustion of gas and gas fuel, the calculation formula of the carbon oxidation rate of fossil fuel is: in, is the volume fraction of CO2 in dry flue gas, %; is the volume fraction of CO in dry flue gas, %; C in dry flue gas m H n The volume fraction, %; m is the number of carbon atoms in the hydrocarbon; n is the number of hydrogen atoms in the hydrocarbon.

7. The method for determining direct carbon emissions from the mixed combustion of fossil fuels and biomass fuels according to claim 1, characterized in that: The flue gas volume, the volume fraction of CO2 in the dry cigarette and the mixed burning conversion coefficient are obtained. Based on the flue gas volume, the volume fraction of CO2 in the dry cigarette and the mixed burning conversion coefficient, the calculation formula for direct carbon emissions is calculated as follows: Among them, E f is the direct carbon emission from fuel combustion per unit time, kgCO2 / h; ρ CO2.d is the density of carbon dioxide, kg / m 3 ; is the volume fraction of CO2 in dry flue gas, %; V fg.d ′ is the dry flue gas volume flow rate, m 3 / h; ψ is the mixed firing conversion coefficient.

8. The method for determining direct carbon emissions from the mixed combustion of fossil fuels and biomass fuels according to claim 7, characterized in that: When the mixed combustion mode is mixed combustion of solid and solid fuel, mixed combustion of solid and liquid fuel, or mixed combustion of solid and gas fuel, the calculation formula of the mixed combustion conversion coefficient is: in, is the mass proportion of biomass in the mixed fuel entering the furnace, %; is the mass proportion of fossil fuel in the mixed fuel entering the furnace, %; ω C.ar.b is the mass fraction of elemental carbon in the biomass fuel received, %; ω as.ar.b is the mass fraction of the basic ash received by biomass fuel, %; ω C.ar.c is the mass fraction of elemental carbon in the fossil fuel received basis, %; ω as.ar.c is the mass fraction of the received ash content of fossil fuel, %; ω c.rs.m is the mass fraction of average combustible matter in ash, %.

9. The method for determining direct carbon emissions from the mixed combustion of fossil fuels and biomass fuels according to claim 7, characterized in that: When the mixed combustion mode is mixed combustion of liquid and liquid fuel or mixed combustion of liquid and gas fuel, the calculation formula of the mixed combustion conversion coefficient is: in, is the mass proportion of biomass in the mixed fuel entering the furnace, %; is the mass proportion of fossil fuel in the mixed fuel entering the furnace, %; ω C.ar.c is the mass fraction of elemental carbon in the fossil fuel received basis, %; ω C.ar.b is the mass fraction of elemental carbon in the biomass fuel as received, %.

10. The method for determining direct carbon emissions from the mixed combustion of fossil fuels and biomass fuels according to claim 7, characterized in that: When the mixed combustion mode is mixed combustion of gas and gas fuel, the calculation formula of the mixed combustion conversion coefficient is: in, is the volume fraction of biomass-derived gas in the gaseous mixed fuel, %; is the volume fraction of fossil fuel gas in the gas mixed fuel, %; is the volume fraction of CO in biomass-derived gas, %; C in biomass-derived gas m H n Volume fraction, %; m is the number of carbon atoms in the hydrocarbon; n is the number of hydrogen atoms in the hydrocarbon; is the volume fraction of CO2 in biomass-derived gas, %; is the volume fraction of CO in fossil fuel gas, %; C in fossil fuel gas m H n Volume fraction, %; is the volume fraction of CO2 in fossil fuel gas, %.

Images