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GB/T 11062-2020 English PDF

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GB/T 11062-2020: Natural gas - Calculation of calorific values, density, relative density and Wobbe indices from composition
Status: Valid

GB/T 11062: Evolution and historical versions

Standard IDContents [version]USDSTEP2[PDF] delivered inStandard Title (Description)StatusPDF
GB/T 11062-2020English944 Add to Cart 5 days [Need to translate] Natural gas - Calculation of calorific values, density, relative density and Wobbe indices from composition Valid GB/T 11062-2020
GB/T 11062-2014EnglishRFQ ASK 6 days [Need to translate] Natural gas -- Calculation of calorific values, density, relative density and Wobbe index from composition Obsolete GB/T 11062-2014
GB/T 11062-1998EnglishRFQ ASK 6 days [Need to translate] Natural gas--Calculation of calorific values, density, relative density and Wobbe index from composition Obsolete GB/T 11062-1998
GB/T 11062-1989EnglishRFQ ASK 3 days [Need to translate] Natural gas--Calculation of calorific value, density and relative density Obsolete GB/T 11062-1989

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Basic data

Standard ID GB/T 11062-2020 (GB/T11062-2020)
Description (Translated English) Natural gas - Calculation of calorific values, density, relative density and Wobbe indices from composition
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard E24
Classification of International Standard 75.060
Word Count Estimation 50,566
Date of Issue 2020-09-29
Date of Implementation 2021-04-01
Older Standard (superseded by this standard) GB/T 11062-2014
Regulation (derived from) National Standard Announcement No. 20 of 2020
Issuing agency(ies) State Administration for Market Regulation, China National Standardization Administration

GB/T 11062-2020: Natural gas - Calculation of calorific values, density, relative density and Wobbe indices from composition


---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.
Natural gas - Calculation of calorific values, density, relative density and Wobbe indices from composition ICS 75.060 E24 National Standards of People's Republic of China Replace GB/T 11062-2014 Natural gas calorific value, density, relative density and Wobbe index calculation method (ISO 6976.2016, IDT) 2020-09-29 released Implementation on 2021-04-01 State Administration for Market Regulation Issued by the National Standardization Management Committee

Table of contents

Preface Ⅲ 1 Scope 1 2 Normative references 1 3 Terms and definitions 2 4 Symbols and units 4 5 Principle of the method 5 6 The properties of ideal gas and real gas 6 7 Molar calorific value calculation 6 8 Mass calorific calculation 7 9 Volume calorific calculation 8 10 Calculation of related parameters 9 11 Uncertainty calculation 11 12 Data sheet 14 Appendix A (Normative Appendix) Values of auxiliary constants 21 Appendix B (Normative Appendix) Uncertainty calculation formula 23 Appendix C (informative appendix) Conversion factor 27 Appendix D (informative appendix) Calculation example 29 Reference 44

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009. This standard replaces GB/T 11062-2014 "Natural Gas Calorific Value, Density, Relative Density and Wobbe Index Calculation Method". This standard Compared with GB/T 11062-2014, the main technical changes are as follows. ---Modified the scope of the standard, refined the content, and revised the "dry natural gas" in the original standard to "natural gas" (see Chapter 1,.2014 Chapter 1 of the Year Edition); ---Modified the compression factor calculation formula (see 6.1, 4.2 in the.2014 edition); ---Modified the basic data and gave the corresponding uncertainty (see Table 1, Table 2, Table 3, Table 1, Table 2, Table 3 in the.2014 edition); ---Deleted the ideal gas mass calorific value (see Table 4 in the.2014 edition); ---Deleted the ideal gas volume calorific value (see Table 5 in the.2014 edition). This standard uses the translation method equivalent to ISO 6976.2016 ``Calculation of Natural Gas Calorific Value, Density, Relative Density and Wobbe Index method". The Chinese documents that have a consistent correspondence with the international documents cited in this standard are as follows. ---GB/T 27894.1-2020 Gas Chromatography Determination of Composition and Calculation of Uncertainty Related to Natural Gas Part 1.Total Guidelines and composition calculation (ISO 6974-1.2012, IDT) ---GB/T 27894.2-2020 Gas Chromatography Determination of Composition and Calculation of Uncertainty Related to Natural Gas Part 2.No Calculation of certainty (ISO 6974-2.2012, IDT) This standard was proposed and managed by the National Natural Gas Standardization Technical Committee (SAC/TC244). Drafting organizations of this standard. China National Petroleum Corporation Southwest Oil and Gas Field Branch Natural Gas Research Institute, CNPC International Pipeline Co., Ltd., China Jiliang University, Langfang Branch of China National Petroleum Corporation Exploration and Development Research Institute, China National Petroleum Corporation Co., Ltd. North China Oilfield Branch, Emerson Process Control Co., Ltd. The main drafters of this standard. Li Ke, Yang Fang, Zhou Li, Luo Qin, Wang Huaqing, Zhang Hongjun, Han Zhongxi, Zhao Xiaodong, Han Jing, Wang Xianzhi, Xu Zhan, Pan Tao, Li Haiwei, Tang Meng, Xu Wenxiao, Zhang Siqi. The previous versions of the standard replaced by this standard are as follows. ---GB/T 11062-1989, GB/T 11062-1998, GB/T 11062-2014. Natural gas calorific value, density, relative density and Wobbe index calculation method

1 Scope

This standard specifies the calculation of the high calorific value, low calorific value of natural gas, natural gas substitutes and other gas fuels when the molar composition of gas is known. The method of calorific value, density, relative density, high Wobbe index and low Wobbe index. Specifies the calculation of gas under common reference conditions The method of the physical parameters of the mixture. The mole fraction is defined as a normalized result, which can be completed by the methods provided in ISO 6974-1 and ISO 6974-2. The values and uncertainties of the physical properties of the various pure components used in the calculation method are given in the table, and their sources are given. Also give The standard uncertainty evaluation method of the calculated physical property parameter values is presented. The calculation method of physical property parameters based on mole, mass or volume is suitable for any natural gas, natural gas substitutes and usually gas Other fuels in the body state. For the calculation of physical property parameters based on volume, this method is only suitable for large compressibility under reference conditions. In a mixture of 0.9. Appendix D gives examples of calculation methods. Note 1.The dimensionless molecular weight is numerically equal to the molar mass (kg·kmol-1). Note 2.The method described in this standard does not explicitly limit the composition range. However, under the reference conditions, the physical property parameter requirements are calculated based on the volume The compression factor of the mixture is greater than 0.9. Note 3.Since the mole fraction of water cannot usually be obtained from chromatographic analysis, the usual practice is to first calculate the physical property parameter values of the dry gas, and then perform a separate process. Calculate the influence of water vapor in the sequence. If the mole fraction of water vapor is known, it can be calculated according to the procedure specified in this standard. ISO /T R29922 discusses the influence of water vapor on directly measured calorific value and calculated calorific value. Note 4.For hydrocarbons above C7, any isomers detected are included in the normal isomers of the same carbon number. Note 5.If you need to replace C6 or C7 in the unanalyzed component with a single virtual component, the user can set its mole fraction by himself, so the virtual component To meet specific application purposes. Any "non-reactive water" and "non-combustible hydrogen sulfide" etc. is to set the appropriate combustion enthalpy value to 0 Virtual component.

2 Normative references

The following documents are indispensable for the application of this document. For dated reference documents, only the dated version applies to this article Pieces. For undated references, the latest version (including all amendments) applies to this document. ISO 6974-1 Gas Chromatographic Determination of Natural Gas and Related Uncertainties in Calculation Part 1.General Guidelines and Composition Calculation Calculated (Naturalgas-Determinationofcompositionandassociateduncertaintybygaschromatography- Part 1.Generalguidelinesandcalculationofcomposition) ISO 6974-2 Gas Chromatographic Determination of Natural Gas and Related Uncertainties in Calculation Part 2.Uncertainty Calculation (Naturalgas-Determinationofcompositionandassociateduncertaintybygaschromatography- Part 2.Uncertaintycalculations) ISO 14912.2003 Gas analysis-Conversion of gas mixture composition data (Gasanalysis-Conversion of gasmixture compositiondata)

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