ASTM D4239-10e1
(Test Method)Standard Test Methods for Sulfur in the Analysis Sample of Coal and Coke Using High-Temperature Tube Furnace Combustion Methods
Standard Test Methods for Sulfur in the Analysis Sample of Coal and Coke Using High-Temperature Tube Furnace Combustion Methods
SIGNIFICANCE AND USE
Sulfur is part of the ultimate analysis of coal and coke.
Results of the sulfur analysis are used for evaluation of coal preparation and cleaning, evaluation of potential sulfur emissions from coal and coke combustion or conversion processes, and evaluation of coal and coke quality in relation to contract specifications, as well as for scientific purposes.
The competency of laboratories with respect to use of this standard can be established through reference to Practice D7448.
SCOPE
1.1 This test method covers the determination of sulfur in samples of coal or coke by high-temperature tube furnace combustion.
1.2 When automated equipment is used the procedure can be classified as an instrumental method.
1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
General Information
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Standards Content (Sample)
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Designation:D4239–10
Standard Test Method for
Sulfur in the Analysis Sample of Coal and Coke Using High-
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Temperature Tube Furnace Combustion
This standard is issued under the fixed designation D4239; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the Department of Defense.
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´ NOTE—The title of Table 1 was editorially corrected in August 2010.
1. Scope Coke by Macro Thermogravimetric Analysis
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2.2 ISO Standard:
1.1 This test method covers the determination of sulfur in
ISO 11722 Solid Mineral Fuels-Hard Coal – Determination
samples of coal or coke by high-temperature tube furnace
of Moisture in the general analysis test sample by drying
combustion.
in nitrogen
1.2 When automated equipment is used the procedure can
be classified as an instrumental method.
3. Summary of Test Method
1.3 The values stated in SI units are to be regarded as
3.1 Combustion Method with Infrared Absorption
standard. No other units of measurement are included in this
Detection—A weighed test portion of sample is burned in a
standard.
tube furnace at a minimum operating temperature of 1350°C in
1.4 This standard does not purport to address all of the
a stream of oxygen. During combustion at temperatures above
safety concerns, if any, associated with its use. It is the
1350 ºC, the sulfur and sulfur compounds contained in the
responsibility of the user of this standard to establish appro-
sample are decomposed and oxidized almost exclusively to
priate safety and health practices and determine the applica-
gaseous sulfur dioxide, SO . Moisture and particulates are
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bility of regulatory limitations prior to use.
removed from the gas by filters. The gas stream is passed
2. Referenced Documents through a cell in which sulfur dioxide is measured by an
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infrared (IR) absorption detector. Sulfur dioxide absorbs IR
2.1 ASTM Standards:
energy at a precise wavelength within the IR spectrum. Energy
D346 Practice for Collection and Preparation of Coke
isabsorbedasthegaspassesthroughthecellbodyinwhichthe
Samples for Laboratory Analysis
IRenergyisbeingtransmitted:thus,atthedetector,lessenergy
D2013 Practice for Preparing Coal Samples for Analysis
is received.All other IR energy is eliminated from reaching the
D3173 Test Method for Moisture in theAnalysis Sample of
detector by a precise wavelength filter. Thus, the absorption of
Coal and Coke
IR energy can be attributed only to sulfur dioxide whose
D3176 Practice for Ultimate Analysis of Coal and Coke
concentration is proportional to the change in energy at the
D3180 Practice for Calculating Coal and Coke Analyses
detector. One cell is used as both a reference and a measure-
from As-Determined to Different Bases
ment chamber. Total sulfur as sulfur dioxide is detected on a
D7448 Practice for Establishing the Competence of Labo-
continuous basis.
ratories Using ASTM Procedures in the Sampling and
Analysis of Coal and Coke
4. Significance and Use
D7582 Test Methods for Proximate Analysis of Coal and
4.1 Sulfur is part of the ultimate analysis of coal and coke.
4.2 Results of the sulfur analysis are used for evaluation of
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This test method is under the jurisdiction of ASTM Committee D05 on Coal
coal preparation and cleaning, evaluation of potential sulfur
and Coke and is the direct responsibility of Subcommittee D05.21 on Methods of
emissions from coal and coke combustion or conversion
Analysis.
processes,andevaluationofcoalandcokequalityinrelationto
CurrenteditionapprovedMay1,2010.PublishedJuly2010.Originallyapproved
contract specifications, as well as for scientific purposes.
in 1983. Last previous edition approved in 2008 as D4239 – 08. DOI: 10.1520/
D4239-10.
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For referenced ASTM standards, visit the ASTM website, www.astm.org, or
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contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Available from International Organization for Standardization (ISO), 1, ch. de
Standards volume information, refer to the standard’s Document Summary page on la Voie-Creuse, Case postale 56, CH-1211, Geneva 20, Switzerland, http://
the ASTM website. www.iso.ch.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
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D4239–10
4.3 The competency of laboratories with respect to use of 7. Reagents
this standard can be established through reference to Practice
7.1 Purity of Reagents—Use reagent grade chemicals in all
D7448.
tests. Unless otherwise indicated, it is intended that all reagents
conform to the specific
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