燃料的 CO₂ 排放

常见燃料燃烧产生的 CO₂ 排放因子参考数据。

co2emissionfuels

概述

当含碳燃料燃烧时，燃料中每千克碳产生 3.67 kg 二氧化碳（CO₂）。此比值来自分子量：CO₂ 为 44 g/mol，碳为 12 g/mol，因此 44 ÷ 12 = 3.67。知道任何燃料的碳含量即可估算其直接 CO₂ 排放，无需复杂的燃烧分析。

以下数值仅涵盖井口到排放的排放——不包括上游开采、加工和运输。

关键公式

每千克燃料的 CO₂ 排放

E_{\text{CO}_2} = c_f \times \frac{44}{12}

其中 $c_f$ 为燃料的特定碳含量（kg C / kg 燃料）。

每单位能量的 CO₂ 排放

e_{\text{CO}_2} = \frac{E_{\text{CO}_2}}{HV}

其中 $HV$ 为燃料的净热值 (MJ/kg)。

燃料消耗产生的 CO₂ 质量

m_{\text{CO}_2} = m_{\text{fuel}} \times c_f \times \frac{44}{12}

变量

符号	说明	单位
$E_{\text{CO}_2}$	每单位燃料质量的特定 CO₂ 排放	kg CO₂ / kg 燃料
$e_{\text{CO}_2}$	每单位能量的特定 CO₂ 排放	kg CO₂ / MJ
$c_f$	燃料的特定碳含量	kg C / kg 燃料
$m_{\text{fuel}}$	消耗的燃料质量	kg
$m_{\text{CO}_2}$	产生的 CO₂ 质量	kg
$HV$	净热值（低热值）	MJ / kg

CO₂ Emission Calculator

(kg)

(kg C / kg fuel)

单位换算器

Fuel CO₂ Emission 单位转换器

(kg)

能量(kWh)

(kg/kWh)

Fuel Emission Reference Data

16 行

近似 carbon content, net heating value, and direct CO₂ emission factors for common fuels
	(kg C / kg)	热量ing value (MJ / kg)	(kg CO₂ / kg)
Natural gas (methane)	0.75	55.4	2.75
Propane (LPG)	0.82	49.7	3.01
Butane	0.83	49	3.03
Gasoline	0.9	46.4	3.3
Kerosene / jet fuel	0.82	43.2	3
Diesel	0.86	45.7	3.15
Heavy fuel oil (No. 6)	0.85	41.8	3.11
Anthracite coal	0.9	32.4	3.3
Bituminous coal	0.65	30.2	2.38
Sub-bituminous coal	0.4	24.5	1.47
Lignite	0.3	14	1.1
Petroleum coke	0.94	33.8	3.45
Ethanol (E100)	0.52	29.9	1.91
Methanol (M100)	0.37	19.8	1.37
Biodiesel (B100)	0.78	40.7	2.86
Wood (dry)	0.5	16.2	1.83

来源: engineeringtoolbox.com

还原的原始源表

以下表格还原自原始来源页面，以保留完整的参考数据。

The original HTML table has 23 rows: 2 multi-row header lines and 21 fuel data rows. The restored table below preserves all 21 data rows from Methane through Bio energy.

Original Source Header Rows

2 行


—	Liquid density	Specific carbon content	Specific Energy content	Specific CO2 emission (amount of fuel basis)	Specific CO2 emission (amount of fuel basis)	Specific CO2 emission (amount of fuel basis)	Specific CO2 emission (amount of energy basis)	Specific CO2 emission (amount of energy basis)	Specific CO2 emission (amount of energy basis)	Specific CO2 emission (amount of energy basis)
—	—	—	—	—	—	—	—	—	—	—

来源: engineeringtoolbox.com

Combustion of Fuels - Carbon Dioxide Emission

21 行

Combustion of Fuels - Carbon Dioxide Emission

Methane (natural gas)	—	0.75	15.4	23900	2.75	—	—	0.18	50	115
Propane	0.51	0.82	13.8	21300	2.99	5.78	12.7	0.22	60	140
Butane	0.564	0.83	13.6	21100	3.03	6.47	14.3	0.22	62	144
LPG (wt of C3=C4)	0.537	0.82	13.7	21200	3.01	6.12	13.5	0.22	61	142
Gasoline	0.737	0.9	12.9	19900	3.3	9.2	20.3	0.26	71	165.3
Kerosene (Jet)	0.821	0.82	12	18500	3	9.33	20.6	0.25	70	162.5
Diesel	0.846	0.86	12.7	19605	3.15	10.1	22.3	0.25	69	160.8
Heavy fuel oil (No.6/Bunker C)	0.98	0.85	11.6	18000	3.11	11.6	25.5	0.27	75	173.3
Petroleum coke	—	0.89	9.4	14500	3.26	14.7	32.4	0.35	97	225.1
Coal:	—	—	—	—	—	—	—	—	—	227.3
Anthracite	—	0.92	9	14000	3.37	—	—	0.37	104	229.5
Bituminous	—	0.65	8.4	13000	2.38	—	—	0.28	79	231.7
Subbituminous	—	0.4	6.8	10500	1.47	—	—	0.22	60	233.9
Lignite	—	0.3	3.9	6000	1.1	—	—	0.28	79	236.1
Coke	—	0.77	7.2	11200	2.82	—	—	0.39	108	251.5
Peat (dry)1)	—	0.52	4.7	7300	1.91	—	—	0.4	112	260.7
Ethanol fuel (E100)2)	0.789	0.52	8.3	12800	1.91	5.71	12.6	0.23	64	149.6
Methanol fuel (M100)2)	0.791	0.37	5.5	8500	1.37	4.11	9.1	0.25	70	162.2
Biodiesel (B100)2)	0.88	0.78	11.3	17400	2.85	9.48	20.9	0.25	70	162.8
Wood1)2)	—	0.5	4.5	7000	1.83	—	—	0.41	113	263.1
Bio energy2)	—	—	—	—	—	—	—	—	—	—

来源: engineeringtoolbox.com

工程要点

Heating values in the table are net (lower) calorific values assuming water vapour in flue gas is not condensed. If gross (higher) values are used, CO₂ per MJ will appear slightly lower.
Biomass fuels (wood, ethanol, biodiesel) are often treated as carbon-neutral in life-cycle accounting because the CO₂ released was recently absorbed from the atmosphere. The direct emission factors above still apply at the stack.
Coal carbon content varies widely by seam and rank. Use mine-specific ultimate analysis data for precise calculations.
The 44/12 ratio (3.667) assumes complete combustion. Incomplete combustion produces CO instead, lowering actual CO₂ and raising toxicity risk.
Emission factors do not account for N₂O or CH₄ slip, which contribute additional greenhouse-gas impact particularly in natural-gas engines and some industrial boilers.
When reporting under regulatory frameworks (EPA, EU ETS), always reference the specific emission-factor database prescribed by the regulator.

参考资料

Engineering Toolbox — CO₂ Emission from Fuels

来源: engineeringtoolbox.com

燃料的 CO₂ 排放

Fuel CO₂ Emission 单位 转换器

Fuel CO₂ Emission 单位转换器