sulfur content of coal

Coal, Kentucky Geological Survey, University of Kentucky

Three forms of sulfur occur in coal: (1) organic, (2) inorganic, and (3) elemental. Understanding the forms of sulfur in a coal is important because coal preparation can reduce the inorganic (pyritic and sulfate) sulfur in coal, but not the organically bound sulfur in coal. Sulfur is distributed in several different forms and scales in coal.

How Coal Works | Union of Concerned Scientists

Sulfur content is determined by the conditions under which the coal is formed. Low-sulfur coal deposits develop in freshwater environments; high-sulfur deposits come from brackish swamps or marine-influenced environments . In the United States, the sulfur content of coal varies along geographic lines, with most—though not all— eastern coal ...

Coal - Wikipedia

Sulfur content of coal. Coal can contain up to 10% sulfur by weight, although values of 1-4% are more typical depending on the region where the coal was extracted. Sulfurous gases (primarily sulfur dioxide) produced by the combustion of fossil ...

Coal 101: The 4 Coal Types and Their Uses | INN

It burns more cleanly than other types of coal due to its low sulfur content. Sub-bituminous coal has applications in power generation and also in industrial processes. This coal type makes up 30 ...

What are the types of coal? - usgs.gov

The biggest coal deposit by volume is the Powder River Basin in Wyoming and Montana, which the USGS estimated to have 1.07 trillion short tons of in-place coal resources, 162 billion short tons of recoverable coal resources, and 25 billion short tons of economic coal resources (also called reserves) in …

Determining the Chemical Analysis of Coal

There are a large number of coal properties, such as ash and sulfur content, that are frequently measured to help determine if a particular coal is suitable for use in a particular process. The most frequently used analysis is a simple type of chemical analysis called a proximate analysis.

Glossary - U.S. Energy Information Administration (EIA)

The term is also used to classify coal according to heat and sulfur content. See Coal grade. Coal Washing: The treatment of coal to remove waste material such as: Dense (heavy) medium processes use a thick solution, usually a mixture of magnetite and water, to separate coal from impurities, such as sulfur, ash, and mercury, by gravity separation.

Sulfur dioxide and coal - SourceWatch

Bituminous coal contains the mineral pyrite, which serves as a host for impurities such as arsenic and mercury. Burning the coal releases trace mineral impurities into the air as pollution. During combustion, approximately 95 percent of bituminous coal's sulfur content gets oxidized and released as gaseous sulfur …

Sulfur in coal and its environmental impact from Yanzhou ...

Sulfur is one of the hazardous elements in coal. The concentrations of sulfur are relatively high in coal. The major forms of sulfur in coal are pyritic, organic and sulfate. Pyritic and organic sulfur generally account for the bulk of sulfur in coal. Elemental sulfur also occurs in coal…

Desulfurization of Coal - Encyclopedia of Life Support Systems

COAL, OIL SHALE, NATURAL BITUMEN, HEAVY OIL AND PEAT – Vol. I - Desulfurization of Coal - Yasuo Ohtsuka ©Encyclopedia of Life Support Systems (EOLSS) supplies of high quality low-sulfur coal, blending with high-sulfur coals may help utilities meet SO2 emission standards. Country Coalfields and Region Total sulfur content, wt%

Chapter C The National Coal Resource Assessment An ...

The National Coal Resource Assessment Overview. Edited by. ... An Introduction to Coal Quality By Stanley P. Schweinfurth. ... the sulfur content of coal may range from low (less than 1 weight percent), through medium (1 to 3 weight percent), to high (greater than 3 weight percent); ash

Coal Sulfur Measurements - EPA

A pamma ray detector then records the gamma ray spectrum. Sulfur atoms in coal, for example, produce 5.4-MeV gamma rays which appear in a gamma ray spec- trum as a peak whose height is directly proportional to the sulfur content of the solid fuel.

1.1 Bituminous And Subbituminous Coal Combustion

Bituminous coals are by far the largest group and are characterized as having lower fixed carbon and higher volatile matter than anthracite. The key distinguishing characteristics of bituminous coal are its relative volatile matter and sulfur content as well as its slagging and agglomerating characteristics.

Where Are the Low Sulphur Content Coal Mines in the US ...

Classification of coal by sulphur content. According to the EIA, low sulphur content coal is defined as having less than 0.60 pounds of sulphur per million British thermal units (or MMBtu).

Monitoring the sulfur content of coal | SpringerLink

May 13, 2016· Abstract. Information regarding the sulfur content of the coal is required not only in metallurgy but also when burning coal as a fuel. The traditional method of determining the sulfur content of coal is unsuitable for large-scale monitoring of processes …

Rule R307-203. Emission Standards: Sulfur Content of Fuels.

(b) 12% volatile ash content. (2) Any person selling coal or coal containing fuel used for direct residential space heating within the State of Utah shall provide written documentation to the coal consumer of the sulfur and volatile ash content of the coal being purchased. R307-203 …

Chapter 7 COAL - Penn State College of Earth and Mineral ...

Chapter 7 COAL If we as a nation are to benefit in the future from our enormous, low-cost coal reserves, a ... Sulfur content of coals is seen to be quite variable. Because of the special importance of sulfur, related to the environmental consequences of burning coals, we shall discuss the presence of sulfur in coal in some detail (see below).

SULFUR CONTENT OF THE COAL RESOURCES OF THE UNITED …

The sulfur content of United States coal can be assessed using a variety of approaches. The sulfur content may be expressed in terms of total sulfur in the coal, pounds of sulfur per million Btu, or sulfur remaining after reduction by coal preparation. In addition, sulfur content may be applied to the demonstrated reserve base or to coal resource estimates.

Sulphur and coal - SourceWatch

All coal contains sulphur, though the amount varies significantly. The U.S. coal company, Foundation Coal, stated in its 2008 annual report that "sulfur content can vary from seam to seam and sometimes within each seam.When coal is burned, it produces sulfur dioxide, the amount of which varies depending on the chemical composition and the concentration of sulfur in the coal.

U.S. Energy Information Administration (EIA) - Coal

EIA uses the heat content of fossil fuels to compare and aggregate energy sources tags: consumption/demand natural gas oil/petroleum More U.S. coal-fired power plants are decommissioning as retirements continue

10 Some Methods of Reducing Sulfur Oxides from Power ...

(Chapter 10 was written by Harry Perry under the general supervision of the committee, which reviewed the work at several stages and suggested modifications that have been incorporated. While every committee member has not necessarily read and agreed to every detailed statement contained within, the ...

Chapter 11: Fossil Fuels Flashcards | Quizlet

has a relatively low heat value and sulfur content, and it is also used in coal-fired electric power plants. Bituminous Coal (soft) produces substantially more heat that the lignite or sub bituminous, but also contains a higher sulfur content; it is used extensively in electric power plants.

U.S. Coal Reserves: An Update by Heat and Sulfur Content

coal, this report, U.S. Coal Reserves: An Update by Heat and Sulfur Content, presents detailed estimates of U.S. coal reserves, as well as descriptions of the data, methods, and assumptions used to develop such estimates, which are basic to the analysis and forecasting The legislation that created the EIA vested the organi-

What is the sulfur content in natural gas? - Answers.com

The sulfur content of coal and its heating values are not constant across all grades of coal. It would require information of type of coal, carbon content, sulfur content and ash content to even ...

Classification of Coal - engineeringtoolbox.com

In coal, those products, exclusive of moisture, given off as gas and vapor determined analytically. Anthracite coal creates a steady and clean flame and is preferred for domestic heating. Furthermore it burn longer with more heat than the other types. Typical Sulfur Content in Coal. Anthracite Coal : 0.6 - …

How to Remove Sulphur from Coal - 911metallurgist.com

The combination gravity and flotation methods demonstrate the technical feasibility of processing fine size coal to effectively remove sulfur and ash to recover high quality clean coal products which meet or exceed specifications for commercial grade coal as regards to Btu value, and ash and sulfur content.

Sulphur Content - an overview | ScienceDirect Topics

Mar 02, 2012· The sulfur content of coal, up to 5%, enters into the atmosphere as sulphur dioxide, a highly corroding compound that cannot be removed from stack gases by any existing technology. Governmental regulations require that the sulfur dioxide emissions be below 0.3% to 0.5% from industrial power plants. This prevents the use of most of our eastern ...

COAL CHARACTERISTICS - purdue.edu

Indiana Center for Coal Technology Research 12 SULFUR IN COAL Although coal is primarily a mixture of carbon (black) & hydrogen (red) atoms, sulfur atoms (yellow) are also trapped in coal, primarily in two forms. In one form, (1) the sulfur is a separate particle often linked with iron (green, pyritic sulfur) with no connection to the carbon ...