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GB 18047-2017 Related PDF English (GB 18047-2000)

GB 18047-2017 (GB18047-2017) & related versions
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GB 18047-2017 GB NATIONAL STANDARD OF THE PEOPLE’S REPUBLIC OF CHINA ICS 75.060 E 24 Replacing GB 18047-2000 Compressed natural gas as vehicle fuel ISSUED ON. SEPTEMBER 7, 2017 IMPLEMENTED ON. APRIL 1, 2018 Issued by. General Administration of Quality Supervision, Inspection and Quarantine of the PRC; Standardization Administration of the PRC. 3. No action is required - Full-copy of this standard will be automatically & immediately delivered to your EMAIL address in 0~60 minutes. Table of Contents Foreword ... 3  1 Scope .. 4  2 Normative references ... 4  3 Terms and definitions ... 5  4 Technical requirements and test methods ... 6  5 Storage and use ... 7  6 Inspection ... 8  Appendix A (Informative) Calculation method of methane number ... 9  Appendix B (Informative) Gas categories of compressed natural gas .. 11  Foreword Article 4.1 of this Standard is mandatory. The rest are recommendatory. This Standard is drafted in accordance with the rules given in GB/T 1.1-2009. This Standard replaces GB 18047-2000 “Compressed natural gas as vehicle fuel”. As compared with GB 18047-2000, the main changes of this Standard are as follows. - REVISE technical specifications for total sulfur. It is changed from “not more than 200 mg/m3” to “not more than 100 mg/m3” (SEE Table 1); - REVISE technical specifications for water dew point. The minimum requirement that “under the maximum operating pressure, the water dew point shall be not higher than -13 °C” is changed to “the mass concentration of water shall not be more than 30 mg/m3”, which is recommended in ISO 15403-2.2006; - ADD test methods for various indicators and POINT out arbitration methods at the same time; - MODIFY the gas categories in Appendix B; MODIFY the indicators for 10T and 12T gas; CANCEL 13T gas. This Standard shall be under the jurisdiction of China National Gas Standardization Technology Committee (SAC/TC 244). Drafting organizations of this Standard. PetroChina Southwest Oil & Gasfield Branch Natural Gas Research Institute, North China Municipal Engineering Design & Research Institute Co., Ltd., China Petroleum Engineering & Construction Corp East China Design Branch, China National Offshore Oil Corporation Research Institute. Main drafters of this Standard. Tang Meng, Wu Hongsong, Chi Yongjie, Zhang Yanxia, He Bin, He Yongming, Cui Dechun, Li Shengshan. The previous release of version of the standard replaced by this Standard is. - GB 18047-2000. Compressed natural gas as vehicle fuel 1 Scope This Standard specifies the technical requirements and test methods of compressed natural gas as vehicle fuel. This Standard applies to the compressed natural gas of which the pressure is not more than 25 MPa as vehicle fuel. 2 Normative references The following documents are essential to the application of this document. For the dated references, only the versions with the dates indicated are applicable to this document. For the undated references, the latest version (including all the amendments) are applicable to this document. GB/T 11060.1 Natural gas - Determination of sulfur compound - Part 1. Determination of hydrogen sulfide content by iodometric titration method GB/T 11060.2 Natural gas - Determination of Sulfur Compound - Part 2. Determination of Hydrogen Sulfide Content by Methylene Blue Method GB/T 11060.3 Natural gas - Determination of sulfur compound - Part 3. Determination of hydrogen sulfide content by lead acetate reaction rate dual photo path method GB/T 11060.4 Natural gas - Determination of sulfur compound - Part 4. Determination of total sulfur content by oxidative microcoulometry method GB/T 11060.5 Natural gas - Determination of sulfur compound - Part 5. Determination of total sulfur content by hydrogenolysis and rateometric colorimetry method GB/T 11060.7 Natural gas - Determination of sulfur compounds - Part 7. Determination of total sulfur content by Lingener combustion method GB/T 11060.8 Natural gas - Determination of sulfur compound - Part 8. Determination of total sulfur content by Ultraviolet fluorescence method GB/T 11062 Natural gas - Calculation of calorific values, density, relative density and Wobbe index from composition GB/T 13609 Natural gas sampling guidelines GB/T 13610 Analysis of natural gas by gas chromatography GB/T 13611-2006 Classification and essential property of city gas GB/T 17258 Steel cylinders for the on-board storage of compressed natural gas as a fuel for automotive vehicles GB/T 17283 Determination of the water dew point of natural gas - Cooled surface condensation hygrometers GB/T 18619.1 Natural gas - Determination of water by the Karl Fischer method-Coulometric procedure GB/T 19158 Steel cylinders for the storage of compressed natural gas GB/T 21069 Natural gas - Determination of water content at high pressure GB/T 22634 Conversion between water content and water dew point of natural gas GB/T 27894.3 Natural gas - Determination of composition with defined uncertainty by gas chromatography - Part 3. Determination of hydrogen, helium, oxygen, nitrogen, carbon dioxide and hydrocarbons up to C8 using two packed columns GB/T 27894.4 Natural gas - Determination of composition with defined uncertainty by gas chromatography - Part 4. Determination of nitrogen, carbon dioxide and C1 to C5 and C6+ hydrocarbons for a laboratory and on- line measuring system using two columns GB/T 27894.5 Natural gas - Determination of composition with defined uncertainty by gas chromatography - Part 5. Determination of nitrogen, carbon dioxide and C1 to C5 and C6+ hydrocarbons for a laboratory and on- line process application using three columns GB/T 27894.6 Natural gas - Determination of composition with defined uncertainty by gas chromatography - Part 6. Determination of hydrogen helium oxygen nitrogen carbon dioxide and C1 to C8 hydrocarbons using three capillary columns GB/T 27896 Test method for water vapor content of natural gas using - Electronic moisture analyzers TSGR 0004 Supervision Regulation on Safety Technology for Stationary Pressure Vessel 3 Terms and definitions 4.2 The calculation of the higher heating value of compressed natural gas as vehicle fuel shall be carried out according to GB/T11062. The determination of the composition of natural gas on which it is based shall be carried out according to GB/T13610, GB/T 27894.3, GB/T 27894.4, GB/T 27894.5, or GB/T 27894.6. The arbitration test method is GB/T 13610. 4.3 The determination of the content of total sulfur in compressed natural gas as vehicle fuel shall be carried out according to GB/T 11060.4, GB/T 11060.5, GB/T 11060.7, or GB/T 11060.8. The arbitration test method is GB/T 11060.4. 4.4 The determination of the content of hydrogen sulfide in compressed natural gas as vehicle fuel shall be carried out according to GB/T 11060.1, GB/T 11060.2, or GB/T 11060.3. The arbitration test method is GB/T 11060.1. 4.5 The determination of the content of carbon dioxide in natural gas as vehicle fuel shall be carried out according to GB/T 13610, GB/T 27894.3, GB/ T 27894.4, GB/T 27894.5, or GB/T 27894.6. The arbitration test method is GB/T 13610. 4.6 The determination of oxygen content in natural gas as vehicle fuel shall be carried out according to GB/T 13610, GB/T 27894.3, GB/T 27894.4, GB/T 27894.5, or GB/T 27894.6. The arbitration test method is GB/T 13610. 4.7 The determination of water content and water dew point of compressed natural gas as vehicle fuel shall be carried out according to GB/T 17283, GB/T 18619.1, GB/T 21069, or GB/T 27896. The arbitration test method is GB/T 17283. When the water dew point is known, according to GB/T 22634, it can be converted to the water content under standard reference conditions. 5 Storage and use 5.1 The storage vessels of compressed natural gas shall comply with the relevant provisions of TSGR 0004 or GB/T 19158. The steel cylinders for compressed natural gas as vehicle fuel shall comply with the relevant provisions of GB/T 17258. 5.2 Under operating pressure and temperature, there shall be no liquid hydrocarbon in compressed natural gas as vehicle fuel. 5.3 The diameter of solid particles in compressed natural gas as vehicle fuel shall be less than 5 μm. 5.4 Compressed natural gas as vehicle fuel shall have a noticeable odor. It shall odorize the natural gas which is odorless or of inadequate odor. The minimum amount of odorant shall conform to that, when natural gas leaks into the air and reaches 20% concentration of lower explosive limit, it shall be detected. Usually Appendix A (Informative) Calculation method of methane number A.1 Definition of methane number MN Methane Number An agreed value which represents the antiknock quality of fuel of spark ignition engine. The methane number of a gas fuel is determined by using ASTM’s evaluation method of octane number, by comparing the detonation tendency of this fuel with that of a standard fuel mixture in a standard engine test under specified conditions. When the antiknock performance of the tested gas fuel is the same as that of the standard fuel mixture of methane and hydrogen in a certain proportion, the number of volume percentage of methane in the standard fuel is the methane number of the gas fuel. A.2 Octane number and methane number A.2.1 Correlation between octane number and methane number The U.S. Gas Technology Institute (GRI) [should be. GTI] used ASTM’s evaluation method of octane number to measure the motor octane number (MON) of gas fuel. The measurement results show that, the MON of pure methane is about 140; the MON of most natural gas is 115~130. The MON of peak-shaving gas with high propane content (17%~25%) is 96~97. The GRI [should be. GTI], through its research, has derived two correlations between composition or hydrogen-carbon ratio and octane number, which are in good agreement with the experimental data, and can be applied to most conventional natural gas. In addition, there are two correlations between octane number and methane number derived from experimental data. These correlations are as follows. A.2.2 Linear correlation between the composition of natural gas and octane number The linear correlation between the composition of natural gas and octane number is shown in the equation (A.1). ......

BASIC DATA
Standard ID GB 18047-2017 (GB18047-2017)
Description (Translated English) Compressed natural gas as vehicle fuel
Sector / Industry National Standard
Classification of Chinese Standard E24
Word Count Estimation 8,843
Date of Issue 2017-09-07
Date of Implementation 2018-04-01
Older Standard (superseded by this standard) GB 18047-2000
Administrative Organization National Natural Gas Standardization Technical Committee (SAC/TC 244)

BASIC DATA
Standard ID GB 18047-2000 (GB18047-2000)
Description (Translated English) Compressed natural gas as vehicle fuel
Sector / Industry National Standard
Classification of Chinese Standard E24
Classification of International Standard 75.060
Word Count Estimation 7,775
Date of Issue 2000-04-03
Date of Implementation 2000-07-01
Quoted Standard GB/T 11060.1-1998; GB/T 11061-1997; GB/T 11062-1998; GB/T 13609-1999; GB/T 13610-1992; GB 17258-1998; GB/T 17283-1998; Gas Cylinder Safety monitoring procedures; pressure Vessel safety Technology Supervision
Adopted Standard ISOFDIS 15403-1998, NEQ
Drafting Organization China National Petroleum Corporation Gas Research Institute of Sichuan Petroleum Administration
Administrative Organization National Standardization Technical Committee of natural gas
Proposing organization China National Petroleum Corporation
Issuing agency(ies) State Quality and Technical Supervision
Summary This Chinese standard specifies the CNG technical requirements and test methods. This standard applies to pressure not greater than 25MPa, as compressed natural gas vehicle fuel.