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Performance test method for coal-fired flue gas desulphurization equipment
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GB/T 21508-2025
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Performance test method for coal-fired flue gas desulphurization equipment
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GB/T 21508-2008
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Basic data | Standard ID | GB/T 21508-2025 (GB/T21508-2025) | | Description (Translated English) | Performance test method for coal-fired flue gas desulphurization equipment | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | J88 | | Classification of International Standard | 13.020.40 | | Word Count Estimation | 38,344 | | Date of Issue | 2025-10-31 | | Date of Implementation | 2026-05-01 | | Older Standard (superseded by this standard) | GB/T 21508-2008 | | Issuing agency(ies) | State Administration for Market Regulation and Standardization Administration of China | GB/T 21508-2025: Performance test method for coal-fired flue gas desulphurization equipment---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
ICS 13.020.40
CCSJ88
National Standards of the People's Republic of China
Replaces GB/T 21508-2008
Performance testing methods for coal-fired flue gas desulfurization equipment
Published on 2025-10-31
Implemented on May 1, 2026
State Administration for Market Regulation
The State Administration for Standardization issued a statement.
Table of contents
Preface III
1.Scope 1
2 Normative References 1
3.Terms and Definitions 2
4.Test Requirements
4.1 Test Time 4
4.2 Test Conditions 4
4.3 Material Requirements 4
4.4 Operating Parameter Requirements
4.5 Requirements for Testing Instruments and Personnel
5.Test Content 4
6.Test Methods 5
6.1 Record of main operating parameters of boiler and desulfurization equipment 5
6.2 Flue gas parameters 5
6.3 SO2 Concentration and Removal Efficiency 6
6.4 Particulate matter concentration and removal efficiency 6
6.5 Droplet Concentration 8
6.6 SO3 Concentration and Removal Efficiency 8
6.7 HCl concentration and removal efficiency 10
6.8 HF concentration and removal efficiency 10
6.9 Hg concentration 11
6.10 Main components, activity, and reaction rate of the absorbent 11
6.11 Absorbent consumption and calcium-sulfur molar ratio 12
6.12 Power consumption 13
6.13 Water consumption 14
6.14 Steam consumption 14
6.15 External compressed air consumption 14
6.16 Main components and mass flow rate of desulfurization wastewater 14
6.17 Composition of desulfurization byproducts (gypsum or desulfurization slag) 14
6.18 Dust concentration in the desulfurization equipment workplace. 16
6.19 Noise 16
6.20 Desulfurization slurry composition 16
7 Test Report 16
7.1 Data Processing 16
7.2 Report Content 16
Appendix A (Informative) Operating Parameters 18
A.1 Boiler Main Operating Parameter Record Table 18
A.2 Record of Main Operating Parameters of Typical Wet Desulfurization Equipment (Table 18)
A.3 Record Table 20 of Main Operating Parameters for Typical Dry/Semi-Dry Desulfurization Equipment
Appendix B (Informative) Typical Process System Measurement Point Layout Diagram 23
B.1 Wet desulfurization process (taking limestone-gypsum method as an example) 23
B.2 Dry/Semi-dry Desulfurization Processes (Taking Flue Gas Circulating Fluidized Bed Desulfurization Process as an Example) 24
Appendix C (Normative) Determination of Sampling Point Location and Number 25
Appendix D (Informative) Determination of Droplet Concentration in Flue Gas 27
D.1 Method Summary 27
D.2 Testing Instruments 27
D.3 Test Procedure 28
D.4 Calculation of droplet concentration 28
Appendix E (Informative) Relative Molecular Masses of Commonly Used Substances in Flue Gas Desulfurization Analysis (30)
Figure 1.Schematic diagram of particulate matter sampling system.
Figure 2.Schematic diagram of SO3 sampling system.
Figure 3 Schematic diagram of SO3 condensation device 9
Figure B.1 Guiding suggestions on the location and range of measuring points in wet desulfurization processes 23
Figure B.2 Guiding suggestions on the location and range of measuring points in dry/semi-dry desulfurization processes 24
Figure C.1 Sampling point location in the circular flue 25
Figure C.2 Sampling point locations in rectangular flue duct 26
Figure D.1 Sampling system for droplets in flue gas 27
Figure D.2 Droplet trap size and shape 28
Table A.1 Record of Main Operating Parameters of Boiler (18)
Table A.2 Record of Main Operating Parameters of Typical Wet Desulfurization Equipment (Table 18)
Table A.3 Record of Main Operating Parameters of Typical Dry/Semi-Dry Desulfurization Equipment (Table 20)
Table E.1 Relative molecular mass of commonly used substances in flue gas desulfurization analysis (30)
Foreword
This document complies with the provisions of GB/T 1.1-2020 "Standardization Work Guidelines Part 1.Structure and Drafting Rules of Standardization Documents".
Drafting.
This document supersedes GB/T 21508-2008 "Performance Test Methods for Flue Gas Desulfurization Equipment", and is consistent with GB/T 21508-2008.
Compared to previous versions, aside from structural adjustments and editorial changes, the main technical changes are as follows.
a) The scope has been changed (see Chapter 1, Chapter 1 of the.2008 edition);
b) The terms and definitions of "load rate" and "desulfurization efficiency" have been removed (see 3.8 and 3.9 of the.2008 edition);
c) Added terms and definitions for "particulate matter," "reference oxygen content," and "removal efficiency" (see 3.8–3.10);
d) Test items such as the variation range of lime digestion rate and desulfurization equipment load rate have been deleted (see 5.1 in the.2008 edition);
e) Added Hg concentration and desulfurization slurry composition testing items (see Chapter 5);
f) The test method for HCl concentration has been changed (see 6.7, 6.3.4.3 in the.2008 edition);
g) The test method for HF concentration has been changed (see 6.8, 6.3.4.4 in the.2008 edition);
h) The test method for particulate matter concentration has been changed (see 6.4,.2008 edition of 6.4);
i) The testing content and methods for Hg concentration in flue gas have been added (see 6.9);
j) Added content on quicklime activity testing and desulfurization slurry composition (see 6.10);
k) The test method for SO3 in flue gas has been changed (see 6.4, Appendix C of the.2008 edition);
l) The determination of the location and number of sampling points has been added (see Appendix C).
Please note that some content in this document may involve patents. The issuing organization of this document assumes no responsibility for identifying patents.
This document was proposed by the China Machinery Industry Federation.
This document is under the jurisdiction of the National Environmental Protection Industry Standardization Technical Committee (SAC/TC275).
This document was drafted by. China Machinery Productivity Promotion Center Co., Ltd., Xi'an Thermal Power Research Institute Co., Ltd., and Zhejiang Feida Environmental Protection Technology Co., Ltd.
Limited Liability Company, Zhejiang University, Fujian Longking Environmental Protection Co., Ltd., Wuhan Kaidi Electric Power Environmental Protection Co., Ltd., China Power Engineering Consulting Group
Group Co., Ltd., Guoneng Nanjing Electric Power Test and Research Co., Ltd., Guoneng Longyuan Environmental Protection Co., Ltd., Dongfang Electric Group Dongfang Boiler Co., Ltd.
Limited Liability Company, China Huadian Electric Power Research Institute Co., Ltd., China National Institute of Standardization, Shanghai Electric Power Station Environmental Protection Engineering Co., Ltd., China Environmental Protection
Machinery Industry Association, Qingdao Daneng Environmental Protection Equipment Co., Ltd., and Zhejiang Zhongke Electric Maintenance Technology Co., Ltd.
The main drafters of this document are. He Yudong, Gao Xiang, Liu Hanxiao, Li Xinghua, Ye Xinglian, Li Yanbo, Wu Min, Li Junzhuang, Zhang Li, and Zhang Yongxin.
Chen Weixiang, Huang Jin, Yang Yonglong, Zhang Qijiu, Yang Zhizhong, Li Zhe, Wei Han, Huang Jingjing, Zhao Lin, Zhang Xiaoxin, Guo Shiyi, Yan Jiewen, Wang Yong, Li Shusheng
Chen Jian.
This document was first published in.2008, and this is its first revision.
Performance testing methods for coal-fired flue gas desulfurization equipment
1 Scope
This document specifies the testing requirements, testing content, testing methods, and testing reports for the performance testing of coal-fired flue gas desulfurization equipment.
This document applies to performance testing of limestone/lime-gypsum wet desulfurization processes and dry/semi-dry desulfurization processes. Other desulfurization processes...
The art should be followed as a reference.
2 Normative references
The contents of the following documents, through normative references within the text, constitute essential provisions of this document. Dated citations are not included.
For references to documents, only the version corresponding to that date applies to this document; for undated references, the latest version (including all amendments) applies.
This document.
GB/T 211 Determination of Total Moisture in Coal
GB/T 3286.1 Chemical analysis methods for limestone and dolomite – Part 1.Determination of calcium oxide and magnesium oxide content using complexing droplets
Fixed method and flame atomic absorption spectrometry
GB/T 3286.2 Chemical Analysis Methods for Limestone and Dolomite – Part 2.Determination of Silica Content – Molybdenum Blue Spectrophotometry
Gravimetric method and perchloric acid dehydration gravimetric method
GB/T 3286.3 Chemical Analysis Methods for Limestone and Dolomite – Part 3.Determination of Alumina Content – Chromium Azure S Spectrophotometry
Measurement method and complexometric titration
GB/T 3286.4 Chemical Analysis Methods for Limestone and Dolomite – Part 4.Determination of Iron Oxide Content (o-phenanthroline spectrophotometric analysis)
Photometry and flame atomic absorption spectrometry
GB/T 3286.5 Chemical Analysis Methods for Limestone and Dolomite – Part 5.Determination of Manganese Oxide Content, Periodate Oxidation
Spectrophotometry
GB/T 3286.6 Chemical Analysis Methods for Limestone and Dolomite – Part 6.Determination of Phosphorus Content – Phosphomolybdic Blue Spectrophotometric Method
GB/T 3286.7 Chemical Analysis Methods for Limestone and Dolomite – Part 7.Determination of Sulfur Content – Tube Furnace Combustion – Potassium Iodate Drop
Deterministic method, high-frequency combustion infrared absorption method and barium sulfate gravimetric method
GB/T 3286.8 Chemical Analysis Methods for Limestone and Dolomite – Part 8.Determination of Loss on Ignition (Gravimetric Method)
GB/T 3286.9 Chemical Analysis Methods for Limestone and Dolomite – Part 9.Determination of Carbon Dioxide Content; Caustic Soda and Asbestos Absorption
Gravimetric method
GB/T 5484 Chemical Analysis Methods for Gypsum
GB/T 6904 Determination of pH in Industrial Circulating Cooling Water and Boiler Water
GB/T 6911 Determination of sulfate in industrial circulating cooling water and boiler water
GB/T 7484 Determination of Fluoride in Water - Ion Selective Electrode Method
GB 8978 Integrated Wastewater Discharge Standard
GB 12348 Emission Standard for Environmental Noise at the Boundary of Industrial Enterprises
GB/T 15453 Determination of chloride ions in industrial circulating cooling water and boiler water
GB/T 16157 Determination of particulate matter and sampling methods for gaseous pollutants in exhaust gas from stationary sources
GBZ /T 192.1 Determination of dust in workplace air – Part 1.Total dust concentration
DL/T 323 Method for determining the activity of quicklime used in dry flue gas desulfurization
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GB/T 21508-2025: Performance test method for coal-fired flue gas desulphurization equipment
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