ASTM D2361-95

Standard Test Method for Chlorine in Coal

SCOPE
1.1 This test method pertains to the determination of total chlorine content in a coal sample.
1.2 The values stated in SI units are regarded as the standard. The values shown in parentheses are for information only.
1.3 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.  For specific hazard statements, see Note 2 and Section 8.

General Information

• Status: Historical
• Publication Date: 31-Dec-2000
• Technical Committee: D05 - Coal and Coke
• Drafting Committee: D05.21 - Methods of Analysis

Relations

• Replaced By: ASTM D2361-95(2001) - Standard Test Method for Chlorine in Coal
• Effective Date: 01-Jan-2001

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation:D2361–95
Standard Test Method for
1
Chlorine in Coal
This standard is issued under the fixed designation D 2361; 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 (ε) indicates an editorial change since the last revision or reapproval.
1. Scope 4.1.2 A weighed specimen is mixed with Eschka mixture
and heated at a specified temperature in an oxidizing atmo-
1.1 This test method pertains to the determination of total
sphere.
chlorine content in a coal sample.
4.2 The chlorides contained in the ammonium carbonate
1.2 The values stated in SI units are regarded as the
solutionnotedin4.1.1orextractedfromtheincineratedEschka
standard. The values shown in parentheses are for information
mixture noted in 4.1.2 are determined by potentiometric
only.
titration.
1.3 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the
5. Significance and Use
responsibility of the user of this standard to establish appro-
5.1 The purpose of this test method is to measure the total
priate safety and health practices and determine the applica-
chlorine content of coal. The chlorine content of coals may be
bility of regulatory limitations prior to use. For specific hazard
useful in the evaluation of slagging problems, corrosion in
statements, see Note 2 and Section 8.
engineering processes, and in the total analysis of coal and
2. Referenced Documents coke. When coal specimens are combusted in accordance with
this test method, the chlorine is quantitatively retained and is
2.1 ASTM Standards:
2
representative of the total chlorine content of the whole coal.
D 121 Terminology of Coal and Coke
3
D 1193 Specification for Reagent Water
6. Apparatus
D 2013 Test Method of Preparing Coal Samples for Analy-
6.1 Balance, analytical, with a sensitivity of 0.1 mg.
2
sis
6.2 Apparatus for Bomb Combustion of the Specimen:
E 144 Practice for Safe Use of Oxygen Combustion
6.2.1 Combustion Bomb, constructed of materials that are
4
Bombs
not affected by the combustion process or products. The bomb
4
E 832 Specification for Laboratory Filter Paper
shall be designed so that all liquid combustion products can be
3. Terminology completely recovered by washing the inner surfaces. There
shall be no gas leakage during a test. The bomb shall be
3.1 For definitions of terms used in this test method, refer to
capable of withstanding a hydrostatic pressure test of 20 MPa
Terminology D 121.
(300 psig) at room temperature without stressing any part
4. Summary of Test Method
beyond its elastic limit.
6.2.2 Combustion Crucible—An open crucible of platinum,
4.1 The specimen is oxidized by combustion and the con-
tainedchlorineisabsorbedinalkalinereagentsusingoneofthe quartz, or acceptable base-metal alloy. Base-metal alloy cru-
cibles are acceptable, if after a few preliminary firings, the
following two procedures:
4.1.1 Aweighed specimen is burned in a combustion bomb weight does not change significantly between tests.
containing oxygen under pressure and a small amount of
NOTE 1—Stable crucible weight may be obtained by heat treating
ammonium carbonate solution.
base-metal crucibles in a muffle furnace for4hata temperature of 500°C.
6.2.3 Ignition Wire, nickel-chromium (Chromel C) alloy or
iron, 100 mm length, 0.16-mm diameter (No. 34 B&S gage).
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This test method is under the jurisdiction of ASTM Committee D-5 on Coal
Platinum or palladium wire, 0.10-mm diameter (No. 38 B&S
Coke and is the direct responsibility of Subcommittee D05.21 on Methods of
gage), may be used.
Analysis.
Current edition approved Sept. 10, 1995. Published November 1995. Originally
6.2.4 Ignition Circuit, for ignition purposes, capable of
published as D 2361 – 65 T. Last previous edition D 2361 – 91.
providing 6 to 16-V ac or dc to the ignition wire. The ignition
2
Annual Book of ASTM Standards, Vol 05.05.
3 circuit shall be controlled with a momentary switch to avoid
Annual Book of ASTM Standards, Vol 11.01.
4
Annual Book of ASTM Standards, Vol 14.02. electrical shock to the operator. An ammeter or pilot light is
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D2361–95
required in the circuit to indicate when current is flowing. A tion bomb. Additional precautions are given in Recommended
step-down transformer, connected to an ac lighting circuit or Practice E 144, for use of oxygen combustion bombs.
batteries, may be used. 8.1.1 The weight of the coal specimen and the pressure of
6.2.5 Water Bath—A container large enough to hold the the oxygen admitted to the bomb must not
...