ASTM D5016-03
(Test Method)Standard Test Method for Sulfur in Ash from Coal, Coke, and Residues from Coal Combustion Using High-Temperature Tube Furnace Combustion Method with Infrared Absorption
Standard Test Method for Sulfur in Ash from Coal, Coke, and Residues from Coal Combustion Using High-Temperature Tube Furnace Combustion Method with Infrared Absorption
SCOPE
1.1 This test method describes a procedure using a high-temperature tube furnace and infrared detection for the rapid determination of sulfur in ash from coal and coke.
1.2 This test method is an alternative for test methods described in Test Methods D 1757.
1.3 The values stated in SI units (Practice E 380) shall be regarded as the 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.
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Designation:D 5016–03
Standard Test Method for
Sulfur in Ash from Coal, Coke, and Residues from Coal
Combustion Using High-Temperature Tube Furnace
1
Combustion Method with Infrared Absorption
This standard is issued under the fixed designation D 5016; 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 (e) indicates an editorial change since the last revision or reapproval.
1. Scope 3. Summary of Test Method
1.1 This test method describes a procedure using a high- 3.1 Aweighed test portion is mixed with a promoting agent
temperature tube furnace and infrared detection for the rapid and ignited in a tube furnace at a minimum operating tempera-
determination of sulfur in ash from coal and coke. ture of 1350°C in a stream of oxygen (see Note 1). The
1.2 This test method is an alternative for test methods combustible sulfur contained in the test portion is oxidized to
described in Test Methods D 1757. gaseous oxides of sulfur. Moisture and particulates are re-
1.3 The values stated in SI units (Practice E 380) shall be moved by traps filled with anhydrous magnesium perchlorate.
regarded as the standard. The gas stream is passed through a cell in which sulfur dioxide
1.4 This standard does not purport to address all of the is measured by an infrared absorption detector. Sulfur dioxide
safety concerns, if any, associated with its use. It is the absorbs IR energy at a precise wavelength within the IR
responsibility of the user of this standard to establish appro- spectrum. Energy is absorbed as the gas passes through the cell
priate safety and health practices and determine the applica- body in which the IR energy is being transmitted; thus, at the
bility of regulatory limitations prior to use. detector, less energy is received. All other IR energy is
eliminated from reaching the detector by a precise wavelength
2. Referenced Documents
filter. The absorption of IR energy can be attributed only to
2.1 ASTM Standards: sulfur dioxide whose concentration is proportional to the
D 1757 Test Methods for Sulfur in Ash from Coal and
change in energy at the detector. One cell is used as both a
2
Coke reference and a measurement chamber. Total sulfur as sulfur
2
D 2795 Test Methods for Analysis of Coal and Coke Ash dioxide is detected on a continuous basis.
D 3174 TestMethodforAshintheAnalysisSampleofCoal
NOTE 1—The promoter aids in the quantitative release of all sulfur
2
and Coke from Coal
present in the test portion as SO . Refer to the instrument manufacturer’s
2
D 3682 Test Method for Major and Minor Elements in Coal
recommended procedure for using oxidizing agents or promoters com-
2
and Coke Ash by Atomic Absorption
monly referred to as “combustion accelerators.”
D 4326 Test Method for Major and Minor Elements in Coal
3.2 Thistestmethodisapplicableforusewithcommercially
2
and Coke Ash by X-Ray Fluorescence
available sulfur analyzers equipped to carry out the operations
D 4621 Guide forAccountability and Quality Control in the
in 3.1 automatically, and must be calibrated using certified
2
Coal Analysis Laboratory
referencematerials(CRM’s)coveringtherangeofsulfurinthe
D 5142 Test Methods for Proximate Analysis of the Analy-
ash samples being analyzed.
2
sis Sample of Coal and Coke by Instrumental Procedures
E 380 Practice for Use of the International System of Units
4. Significance and Use
3
(SI) (the Modernized Metric System)
4.1 The purpose of this test method is to determine the
percent sulfur trioxide (SO ) portion of the major and minor
3
elements in coal ash.
1
This test method is under the jurisdiction of ASTM Committee D05 on Coal
4.2 This test method may be used to determine the percent
and Coke and is the direct responsibility of Subcommittee D05.29 on Major
Elements in Ash and Trace Elements of Coal.
sulfur trioxide (SO ) portion of ash determined by Test
3
Current edition approved April 10, 2003. Published July 2003. Originally
Methods D 3174 or D 5142 for coals containing high amounts
approved in 1989. Last previous edition approved 1998 as D 5016 – 98.
2 of calcium. The ash may then be reported on a sulfur trioxide
Annual Book of ASTM Standards. Vol 05.05.
3
Annual Book of ASTM Standards. Vol 14.02. free basis.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
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D 5016–03
prescribed ashing conditions is important. Sulfur in ash as determined by
5. Apparatus
thesemethodscannotbestrictlyrelatedtothesulfuroxidesretainedinash
5.1 Tube Furnace, electrically heated, capable of heating
produced under the conditions of combustion in boiler furnaces, or other
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