GB/T 480-2010 English PDF (GB/T480-2010)

Delivery: 3 seconds. Download true-PDF + Invoice.
Get QUOTATION in 1-minute: Click GB/T 480-2010
Historical versions: GB/T 480-2010
Preview True-PDF (Reload/Scroll if blank)

GB/T 480-2010: Test of low temperature distillation of coal by aluminum retort
GB/T 480-2010
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 73.040
D 21
Replacing GB/T 480-2000
Test of low temperature distillation of coal by
aluminum retort
(ISO 647:1974, Brown coals and lignites - Determination of the yields of tar,
water, gas and coke residue by low temperature distillation, MOD)
ISSUED ON: SEPTEMBER 26, 2010
IMPLEMENTED ON: FEBRUARY 01, 2011
Issued by: General Administration of Quality Supervision, Inspection
and Quarantine;
Standardization Administration of the People’s Republic of
China.
Table of Contents
Foreword ... 4 
1 Scope ... 6 
2 Normative references ... 6 
3 Method summary ... 7 
4 Materials and reagents ... 7 
5 Instruments and apparatuses ... 7 
6 Preparation before the test ... 9 
7 Test procedure ... 11 
8 Determination of dry distillation total moisture ... 13 
9 Result expression ... 14 
10 Method precision ... 16 
11 Test report ... 16 
Appendix A (Informative) Comparison of chapter numbers between this
Standard and ISO 647:1974 ... 17 
Appendix B (Informative) Technical difference of the chapter numbers of this
Standard and ISO 647:1974 and their causes ... 18 
Appendix C (Normative) Grinding method of contact surface between the cover
and the retort mouth ... 20 
Appendix D (Informative) Method for adding sand to coal of strong expansibility
... 21 
Appendix E (Informative) Centrifugation determination of dry distillation total
moisture ... 22 
Foreword
This Standard modifies and adopts ISO 647:1974, Brown coals and lignites -
Determination of the yields of tar, water, gas and coke residue by low
temperature distillation (English version).
This Standard is redrafted in accordance with ISO 647:1974. Compared with
ISO 647:1974, there are some adjustments in the structure. Appendix A makes
a comparison list of changes in chapter numbers between this Standard and
ISO 647:1974.
In consideration of China's national conditions, when this Standard is adopted,
there are technical differences compared with ISO 647:1974; the terms which
are involved in these differences have been marked by vertical single lines (|)
on the outer page margins; Appendix B gives a list of corresponding technical
differences and their causes.
The main technical differences between this Standard and ISO 647:1974 are
as follows:
-- Remove the calculation method summary of each product yield;
-- Retain only electrical heating for the type of heating; remove the gas
heating method;
-- Add technical requirements for moisture measuring tubes, condensers and
balances;
-- Add equipment drawings, air tightness inspection methods, and
pretreatment methods for coal of strong expansibility;
-- Add regulations for the export method of dry distillation products, the
method for determining the water content in the condensate (dry
distillation total moisture) and the calculation formula for the yield of each
product;
-- Remove the calculation of coal gas production rate;
-- Add conversion and correction formulas for the dry ash-free basis coke
residue yield result basis;
-- Modify the precision for the determination of dry distillation product yield;
This Standard replaces GB 480-2000, Test for carbonization of coal in
aluminum retort; compared with GB/T 480-2000, the main technical changes,
except editorial changes, are as follows:
Test of low temperature distillation of coal by
aluminum retort
1 Scope
This Standard specifies the method summary, instruments and apparatuses,
test procedure and result expression of the test of low temperature distillation
by aluminum retort.
This Standard applies to brown coal and soft coal.
2 Normative references
The terms in the following documents become the terms of this Standard by
reference to this Standard. For dated references, all subsequent amendments
(not including errata content) or revisions do not apply to this standard. However,
parties to agreements that are based on this Standard are encouraged to study
whether the latest versions of these documents can be used. For undated
references, the latest edition applies to this Standard.
GB/T 212, Proximate analysis of coal (GB/T 212-2008, ISO 11722:1999,
Solid mineral fuels - Hard coal - Determination of moisture in the general
analysis test sample by drying in nitrogen; ISO 1171:1997, Solid mineral
fuels - Determination of ash; ISO 562:1998, Hard coal and coke -
Determination of volatile matter, NEQ)
GB/T 218, Determination of the carbonate carbon dioxide content in coal
(GB/T 218-1996, eqv ISO 925:1997)
GB 474, Preparation of coal sample (GB 474-2008, ISO 18283:2006, Hard
coal and coke - Manual sampling, MOD)
GB/T 19494.2, Mechanical sampling of coal - Part 2: Method for sample
preparation (GB/T 19494.2-2004, ISO 13909-1:2001 Hard coal and coke -
Mechanical sampling - Part 1: General introduction; ISO 13909-4:2001 Hard
coal and coke - Mechanical sampling - Part 4: Coal - Preparation of test
samples, NEQ)
3 Method summary
Hold the coal sample in the aluminum retort; use a certain temperature-rising
program to heat to 510 °C, and maintain for a certain period of time; measure
the yields of tar, pyrolysis water, coke residue and coal gas that are obtained
after dry distillation.
4 Materials and reagents
4.1 Xylene or toluene: chemically pure.
4.2 Lubricating oil and selected flake graphite powder.
5 Instruments and apparatuses
5.1 Aluminum retort
5.1.1 Aluminum retort body (Figure 1), made of aluminum;
5.1.2 Aluminum retort cover (Figure 2), made of aluminum;
5.1.3 Delivery line (Figure 3), made of copper;
5.1.4 Connecting nut (Figure 4), made of steel.
5.2 Heating device: with temperature control device; specifications and
performance shall meet the following requirements:
a) The temperature shall be increased to 260 °C within the first (15 ~ 20) min;
b) During (260 ~ 510) °C, the heating rate is 5 °C/min. The total temperature
rise error is ±10 °C;
c) The final temperature can reach above 510 °C.
6.3 Coal sample
The coal sample is an air-dried coal sample, whose particle size is less than
0.2 mm, that is prepared according to GB 474 or GB/T 19494.2.
6.4 Instrument assembly
6.4.1 Cover the retort cover. Use a small wooden hammer to lightly tap the retort
cover tightly. Use a tight airtight cork stopper to connect the aluminum retort
delivery line to the conical flask. Extend the aluminum retort delivery line into
the bottle; the length of the extension shall not be less than half the height of
the bottle, but shall not be in contact with the bottom of the bottle. Insert a
slightly curved glass air duct from another small hole of the cork stopper for gas
discharge. All junctions shall be airtight. The conical flask shall be washed, dried
and weighed, to 0.01 g, in advance before it is connected to the aluminum retort.
6.4.2 Put the aluminum retort into the electric furnace; at the same time, put the
conical flask into the cooling bath. Close the furnace cover; insert the
thermocouple or thermometer into the temperature measuring hole of the
aluminum retort.
6.4.3 Put a certain amount of water and ice cubes in the cooling bath; the
conical flask shall be immersed in the water as much as possible, but the bottle
mouth shall be higher than the water surface. Circulating water below 15 °C
can also be used; but the circulating water flow shall be able to make tar and
wat...