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GB/T 19560-2025: Experimental method of high-pressure isothermal adsorption to coal
Status: Valid GB/T 19560: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 19560-2025 | English | 279 |
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Experimental method of high-pressure isothermal adsorption to coal
| Valid |
GB/T 19560-2025
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| GB/T 19560-2008 | English | 209 |
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Experimental method of high-pressure isothermal adsorption to coal
| Valid |
GB/T 19560-2008
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| GB/T 19560-2004 | English | 359 |
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Experimental method of high-pressure adsorption isothermal to coal capacity method
| Obsolete |
GB/T 19560-2004
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Standard similar to GB/T 19560-2025 GB/T 51033 GB/T 50082 GB/T 19560 Basic data | Standard ID | GB/T 19560-2025 (GB/T19560-2025) | | Description (Translated English) | Experimental method of high-pressure isothermal adsorption to coal | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | D21 | | Classification of International Standard | 73.040 | | Word Count Estimation | 14,12 | | Date of Issue | 2025-08-01 | | Date of Implementation | 2025-11-01 | | Older Standard (superseded by this standard) | GB/T 19560-2008 | | Issuing agency(ies) | State Administration for Market Regulation, Standardization Administration of China | GB/T 19560-2025: Experimental method of high-pressure isothermal adsorption to coal---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GBT19560-2025
ICS 73.040
CCSD21
National Standard of the People's Republic of China
Replaces GB/T 19560-2008
High-pressure isothermal adsorption test method for coal
Released on August 1, 2025
Implementation on November 1, 2025
State Administration for Market Regulation
The National Standardization Administration issued
Table of Contents
Preface III
1 Scope 1
2 Normative references 1
3 Terms and Definitions 1
4 Method Summary 1
5 Instruments and Equipment 1
5.1 Equilibrium moisture determination 1
5.2 Isothermal adsorption device 1
6 Reagents or materials 2
7 Sample preparation and equilibrium moisture determination 2
7.1 Sample Preparation 2
7.2 Industrial Analysis 2
7.3 Equilibrium moisture determination 3
8 Test Step 3
8.1 Sample loading cylinder 3
8.2 Airtightness check 3
8.3 Free space volume determination 3
8.4 Isothermal adsorption test 4
9 Data Processing 4
9.1 Calculation of Coal Sample Volume and Free Space Volume 4
9.2 Calculation of adsorption capacity at each pressure point 5
9.3 Calculation of Langmuir Volume (VL) and Langmuir Pressure (pL) 6
9.4 Drawing of Isothermal Adsorption Curves 6
10 Precision 6
10.1 Repeatability limit 6
10.2 Reproducibility limit 6
11 Test Report 6
11.1 Appendix 6
11.2 Test results 6
Appendix A (Normative) Isothermal Adsorption Test Report 7
Preface
This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for standardization work Part 1.Structure and drafting rules for standardization documents"
Drafting.
This document replaces GB/T 19560-2008 "High-pressure isothermal adsorption test method for coal".
In addition to structural adjustments and editorial changes, the main technical changes are as follows.
a) Added schematic diagram of isothermal adsorption equipment (see 5.2);
b) Added requirements for reagents (see 6.2);
c) The equilibrium moisture calculation formula (1) has been changed (see 7.3.3, 6.3.3 of the.2008 edition);
d) Added some chapter titles (see 8.3.4, 8.3.5, 8.4.6, and 11.1).
Please note that some of the contents of this document may involve patents. The issuing organization of this document does not assume the responsibility for identifying patents.
This document was proposed by the China Coal Industry Association.
This document is under the jurisdiction of the National Coal Standardization Technical Committee (SAC/TC42).
This document was drafted by. China Coal Technology and Engineering Xi'an Research Institute (Group) Co., Ltd., Xi'an Coal Science and Technology Testing Technology Co., Ltd., CNOOC Energy
Development Co., Ltd., Yi'an Blue Flame Coal and Coalbed Methane Co-mining Technology Co., Ltd., and China United Coalbed Methane Co., Ltd.
The main drafters of this document are. Lin Peiyao, Zheng Yuzhu, Yang Xinhui, Zhang Qingling, Li Yuhui, Tian Xinjuan, Ma Litao, Wu Jie, Yao Jinfang,
Chen Zhaoying and Meng Shangzhi.
This document was first published in.2004, revised for the first time in.2008, and this is the second revision.
High-pressure isothermal adsorption test method for coal
1 Scope
This document describes the volumetric high-pressure isothermal adsorption test method for coal.
This document is applicable to the determination of the adsorption capacity of bituminous coal and anthracite for methane, carbon dioxide and other gases.
The determination of the adsorption capacity of the body was carried out according to the reference.
2 Normative references
The contents of the following documents constitute the essential clauses of this document through normative references in this document.
For referenced documents without a date, only the version corresponding to that date applies to this document; for referenced documents without a date, the latest version (including all amendments) applies to
This document.
GB/T 212 Industrial analysis methods for coal
GB/T 474 Coal sample preparation method
GB/T 31537 Coalbed Methane (Coal Mine Gas) Terminology
3 Terms and Definitions
The terms and definitions defined in GB/T 31537 apply to this document.
4 Method Summary
The coal sample with a certain particle size that reaches equilibrium moisture is placed in a sealed container and its particle size is measured under the same temperature and different pressure conditions.
The volume of test gases such as methane and carbon dioxide adsorbed at adsorption equilibrium; according to the Langmuir monolayer adsorption theory, the volume of test gases such as methane and carbon dioxide adsorbed at adsorption equilibrium is calculated theoretically.
Calculate the adsorption constants [Langemuir volume (VL), Langmuir pressure (VL)] that characterize the adsorption characteristics of coal for test gases such as methane and carbon dioxide.
(pL)] and isothermal adsorption curves.
5 Instruments and Equipment
5.1 Equilibrium moisture determination
5.1.1 Dryer.
5.1.2 Balance. sensitivity 0.1 mg.
5.1.3 Constant temperature system.
5.2 Isothermal adsorption device
The schematic diagram of the isothermal adsorption equipment is shown in Figure 1.
---Sample cylinder;
---Reference cylinder;
--- Constant temperature control system. sensitivity 0.3℃;
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