of coal distributed to the other industrial and residential/commercial Every million BTUs released from burning coal releases an average of 208 pounds of CO2 (see note below). Except for Arizona, North Dakota, and Texas, The panel is rated to produce 224 watts of power in 1 hour of peak solar intensity. of the samples range from 1900 through 1986, it was thought that changes Subbituminous coal is the predominant rank of coal produced west of the Mississippi River, accounting for 62 percent of the That's now 163 lb-mols of CO2 or 7186 lbs of CO2. 20Energy Information Administration, Cost and Quality of Fuels for Electric Utility Plants 1992, DOE/EIA-019(92) by multiplying the factors by the estimated percentage of carbon converted hence the carbon dioxide emission factor for that State--depends on the mix of coal consumed by various consuming sectors in covered all of the major and most of the minor coal-producing States (Table FE1). standard classification method developed by the American Society for Testing and Materials. published emission factors include, in pounds of carbon dioxide per million About 16 percent of the 1992 12 g of C gives 44 g of CO 2. combustion of sulfur in coal is relatively small, because the heating value of sulfur is only about 4,000 Btu per pound, and the sulfur Alaska (214.0). DC, October 1993), p. 30. but slightly below that in Montana. 1990, DOE/EIA-0348(90) (Washington, DC, January 1992), p. 124, were C + O2 → CO2 is the balanced equation. were verified statistically. consumption in 1992, electric utilities accounted for 87 percent, up from 81 percent in 1980, due mostly to increases in utility coal of which are consumed as energy sources and others as non-energy raw materials. (1) Because of a growing concern over the possible consequences of global warming, which may be caused in part by incr… So my question is: how many kg of CO2 are emitted from burning 1kg of Coal? subbituminous coal, and bituminous coal. 1 kg of sulphur requires 1 kg of O2. matter, moisture, and ash. This was confirmed by an analysis of variance. The combustion of coal, however, adds a significant amount of carbon dioxide to the atmosphere per unit of heat energy, more than does the combustion of other fossil fuels. Subbituminous coal in Wyoming's Powder River Basin, the principal source of this rank of coal, of the Relationship Between the Heat and Carbon Content of U.S. Coals," At the lower end of 46%, that's 880 lbs of Carbon or 73.3 lb-mols of Carbon. Note: Total may not equal sum of components due to independent rounding. Coal rank was assigned to each sample according to the for anthracite. operations indicates that about 10 percent of the carbon in coking coal remains in non- energy byproducts. and State of origin. EIA's carbon dioxide emission factors were derived from data in the EIA Coal Analysis File, one of the most comprehensive data Coal used to produce coke is virtually all bituminous in rank; less than 1 percent is anthracite. pound. Two types of carbon dioxide emission factors have been developed. As with coal consumption by sector, the amount of carbon dioxide emitted from total coal combustion in a particular State--and The amount and energy content of coal consumption Second are emission factors for use in estimating carbon dioxide emissions from coal consumption by State, with 21Information on the rank By comparison, the coal Fixed carbon is principally carbon, but it A regression utility coal by rank. Furthermore, because data on the origin and destination of coal are available only for Because lower as noted in Table FE4. Analysis was performed to 7Modification of the emission And in terms of the weight of the various components, this represents: 1 kg of carbon + 2.67 kg of oxygen give 3.67 kg of carbon dioxide and heat. The shift in the mix of coal ranks consumed becomes apparent when production by coal rank in 1980 is compared with that in From the more than 60,000 coal samples in the File, 5,426 were rank coals have relatively high carbon dioxide emission factors, increased use of these coals caused the national average carbon 1 kWh of electricity, when produced from a coal burning power plant, will generate 0.94 kg (or 2.07 lbs) of CO2 emissions to the atmosphere according to CNCF.. under "Carbon Dioxide Emission Factors by Coal-Consuming Sector and State.". 1 pound of carbon combines with 2.667 pounds of oxygen to produce 3.667 pounds of carbon dioxide. To calculate the Carbon Dioxide - CO 2 - emission from a fuel, the carbon content of the fuel must be multiplied with the ratio of molecular weight of CO 2 (44) to the molecular weight of Carbon (12) -> 44 / 12 = 3.7. where. in the United States (Executive Summary), U.S. Department of Energy, during combustion. while the share for lignite grew from 6 percent to 9 percent. 18Energy Information Administration, Coal Production 1980, DOE/EIA-0118(80) (Washington, DC, May 1982), 4The relationships of the The typical carbon content for coal (dry basis) ranges from more than 60 percent for lignite to more than 80 percent its share dropped to 65 percent. Only a few States, mostly in Calculate the CO2 emission intensity (kg CO2 emitted/kWh delivered).Assume complete combustion where all the available carbon in the fuel is … Because the dates Texas, lignite. Origin. respective amounts received by sector. future. therefore, already partially oxidized the carbon, decreasing its ability to generate heat. R. The term O ÷ 8 for hydrogen is a correction applied to account Source: Energy Information Administration, Office of Coal, Nuclear, Electric and Alternate Fuels, “Analysis of the Relationship Between the Heat and Carbon Content of U.S. Coals,” September 1992. was the same as that consumed in that year. These emission factors are based on the mix of coal consumed and the basic emission factors by coal rank because of stock additions or withdrawals. factors by consuming sector in each State were derived by weighting the emission factors by coal rank and State of origin by the DOE/EIA-012(80) (Washington, DC, May 1981), for production and disposition developed from the EIA Coal Analysis File, are considered to effectively represent the relationship between the carbon and heat Office of Technology Assessment, February 1991, p. 333; 205.6 for bituminous The carbon dioxide emission factor was assumed as follows: anthracite, 209; bituminous coal, 209; subbituminous coal, Volatile matter comprises hydrogen, carbon dioxide, carbon monoxide, and 1Coal combustion emits almost Although most of the carbon in the coal carbonized remains in the coke, a small amount is retained in byproducts, some The amount of heat contributed by the The theoretical air can be calculated for a particular coal if carbon, hydrogen, nitrogen, oxygen and sulfur contents in weight percent are known by ultimate analysis. 219; and lignite, 213. content of coal generally averages 1 to 2 percent by weight. The (arithmetic) average emission factors obtained from the individual samples (assuming complete combustion) (Table FE4)(10) confirm the long-recognized finding that anthracite emits the largest amount of carbon dioxide per million Btu, followed by lignite, Do the math, calculating moles and using the mole to mole ratio in the balanced chemical equation. Coal started its life a long time ago as biomass. of natural gas, whereas the amount from crude oil combustion falls between are due primarily to variations in the hydrogen content. The high carbon dioxide emission factor for anthracite reflects the coal's relatively small hydrogen content, which lowers its heating value. 19Energy Information Administration, Quarterly Coal Report July-September 1993, DOE/EIA-0121(93/3Q) First are basic emission factors covering the various coal ranks by State of origin. When the total energy in Btu from coal consumption by State is known (with no breakdown All ranks of coal are used by the other industrial and the residential/commercial sectors. for estimating the amount of carbon dioxide emitted as a result of U.S. coal consumption. Anthracite is the hardest of coals. Bituminous coal: 94,600 kg of carbon dioxide per TJ; Anthracite: 98,300 kg of carbon dioxide per TJ; These figures are based on the low heat value (i.e. Taking coal to contain 50 percent carbon, which combines with oxygen during burning to form CO2, we can arrive at 1.83 kg CO2 for every 1 kg of coal burned. The amount of heat emitted during coal combustion depends largely on the amounts of carbon, hydrogen, and oxygen present in p. 20; and Coal Production 1992, DOE/EIA-0118(92) (Washington, ÷ Btu per pound x 36,670 = pounds (lbs) of carbon dioxide per million Dulong's formula is as follows: Btu per pound = 14,544C + 62,028(H - O EIA's emission factors are derived from the EIA Coal Analysis File, a large database of coal sample analyses.