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GB/T 41328-2022Biogas-based natural gas (English PDF)

生物天然气

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Issued by

SAMR; SAC

Level / Type

National · Recommended

Issue date

March 9, 2022

Implementation date

October 1, 2022

Scope

GB/T 41328-2022 is the English-translated version of 生物天然气.

GB/T 41328-2022 is the Chinese national standard for biogas-based natural gas, the gas made by upgrading biogas to pipeline quality.

It gives the technical requirements - the methane content, the Wobbe index, the water and oxygen content and the limits on sulphur, siloxanes and other impurities - the sampling and inspection rules, the test methods and the requirements on transport, marking, storage and safety of use.

It applies to the natural gas produced by purifying or methanating methane-bearing feed gases such as biogas, biomass pyrolysis gas and landfill gas. Plant operators and gas utilities use it. Issued on 9 March 2022, it has applied since 1 October 2022.

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Document preview — GB/T 41328-2022

National Standard of the People's Republic of China

ICS: 71.100.20
Classification: G 86

Issued by: State Administration for Market Regulation; Standardization Administration of the PRC

Foreword3
1 Scope4
2 Normative references4
3 Terms and definitions6
4 Technical requirements6
5 Sampling and inspection rules7
6 Test methods8
7 Transport, marking, storage and transportation and safety of use9
References11

1 Scope

This document specifies the technical requirements for biogas-based natural gas, determines the sampling and inspection rules for biogas-based natural gas, and provides the test methods and requirements for transport, marking, storage and transportation, and safety of use of biogas-based natural gas.

This document applies to natural gas produced by purification or methanation process of methane-containing feedstock gas such as biogas, biomass pyrolysis gas, and landfill gas.

2 Normative references

The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the version corresponding to that date is applicable to this document; for undated references, the latest version (including all amendments) is applicable to this document.

GB/T 11060.4, Natural gas - Determination of sulfur compound - Part 4: Determination of total sulfur content by oxidative microcoulometry 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

GB/T 12208, Test methods of components and impurities of the manufactured gas

GB 12268, List of dangerous goods

GB/T 13609, Natural gas sampling guidelines

GB/T 13610, Analysis of natural gas composition - Gas chromatography

GB/T 13611, Classification and basic characteristics of city gas

GB/T 16781.1, Natural gas - Determination of mercury - Part 1: Sampling of mercury by chemisorption on iodine

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 18047, Compressed natural gas as vehicle fuel

GB/T 19158, Steel cylinders for the storage of compressed natural gas

GB/T 22634, Conversion between water content and water dew point of natural gas

GB/T 27893, Natural gas. Determination of particles content. Gravimetric method

GB/T 28727, Gas analysis - Determination of sulfides - Gas chromatograph with flame photometric detector

GB/T 33318, Gas analysis. Determination of sulfide. Gas chromatography with sulfur chemiluminescence

GB/Z 33440, General requirements for interchangeability of natural gas entering long-distance pipeline network

GB/T 33445-2016, Coal-based synthetic natural gas

GB/T 37182, Gas analysis - Gas chromatograph with plasma emission detector

GB 50028, Code for design of city gas engineering

GB 50251, Design code for gas transmission pipeline engineering

GB 50494, Technical Code for City Gas

HJ 77.2, Ambient air and waste gas - Determination of polychlorinated dibenzo-p- dioxins (PCDDs) and polychlorinated dibenzofurans (PCDFs) - Isotope dilution HRGC-HRMS

HJ 645, Ambient air - Determination of volatile halogenated hydrocarbons - Activated charcoal adsorption and carbon disulfide desorption/gas chromatographic method

HJ 801, Ambient air and waste gas - Determination of amide compounds - Liquid chromatography

JT/T 617 (all parts), Regulations concerning road transportation of dangerous goods TSG R0005, Supervision Regulation on Safety Technology for Transportable Pressure Vessel

TSG 23, Regulation on Safety Technology for Gas Cylinder Compressed biogas-based natural gas shall be inspected in batches, and one operation shift shall inspect at least one batch every day. Take one sample from one batch for inspection. When any item in the inspection results does not meet the technical requirements of the corresponding category in this document, it shall be re-inspected according to the technical requirements of the next category; if it still does not meet the requirements, judge the batch of products to be unqualified. The supplier and the buyer shall negotiate to resolve the synthetic natural gas products that do not meet the indices.

6 Test methods

6.1 Component determination and calculation of high calorific value

Use the methods specified in GB/T 13610, GB/T 33445, GB/T 37182, or other equivalent methods to determine the hydrogen content, oxygen content, nitrogen content, carbon dioxide content, carbon monoxide content, methane content, ethane content, propane content, isobutane content, n-butane content, neopentane content, isopentane content, n-pentane content, hexane content, heptane content and heavier alkane component content, olefinic component content and ammonia content in biogas- based natural gas. When there is any objection to the determination results, use the method specified in GB/T 13610 as the arbitration method.

The calculation of the high calorific value of biogas-based natural gas shall be performed according to GB/T 11062.

6.2 Determination of hydrogen sulfide content

Use GB/T 33318, GB/T 28727, GB/T 37182 to determine the hydrogen sulfide content in the biogas-based natural gas; use the methods specified in GB/T 33318, GB/T 11060.4, GB/T 11060.8 or other equivalent methods to determine the total sulfur content in biogas-based natural gas. When there is any objection to the above determination results, use the method specified in GB/T 33318 as the arbitration method.

6.3 Determination of total sulfur content

Use GB/T 33318, GB/T 11060.4, GB/T 11060.8 or other equivalent methods to determine the total sulfur content in biogas-based natural gas. When there is any objection to the determination results, use the method specified in GB/T 33318 as the arbitration method.

6.4 Determination of mercury content

Use the method specified in GB/T 16781.1 to determine the mercury content in biogas- based natural gas. When using this method, the influence of interfering components on the determination results shall be analyzed.

6.5 Determination of total chlorine content

Determine the total chlorine content in biogas-based natural gas according to the method specified in HJ 645. Other equivalent methods are permitted for the determination of total chlorine content in biogas-based natural gas. When there is any objection to the determination results, use the method specified in HJ 645 as the arbitration method.

6.6 Determination of solid particle content

Determine the solid particle content in biogas-based natural gas according to the method specified in GB/T 27893. Other equivalent methods are permitted for the determination of solid particle content in biogas-based natural gas. When there is any objection to the determination results, use the method specified in GB/T 27893 as the arbitration method.

6.7 Determination of water dew point

Determine the water dew point in biogas-based natural gas according to the method specified in GB/T 17283. For the water dew point under known pressure, it can be converted to the water dew point under other pressures according to GB/T 22634. Other equivalent methods are permitted for the determination of water dew point in biogas- based natural gas. When there is any objection to the determination results, use the method specified in GB/T 17283 as the arbitration method.

6.8 Determination of the content of dioxin compounds

Determine the content of dioxin compounds in biogas-based natural gas according to the method specified in HJ 77.2.

6.9 Determination of amine content

Determine the amine content in biogas-based natural gas according to the method specified in HJ 801.

6.10 Determination of tar content

Determine the tar content in biogas-based natural gas according to the method specified in GB/T 12208.

7 Transport, marking

storage and transportation and safety of use

7.1 Transport, marking, storage and transportation

7.1.1 The relevant regulations of GB 12268, GB/T 13611, GB/Z 33440, GB 50028, GB 50251, JT/T 617 (all parts) and TSG R0005 shall be implemented during the transport and use of biogas-based natural gas. For the safety management of biogas-based natural

......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 19 pages — is available in the English PDF.

Referenced standards

Normative references

GB/Z 33440 · GB 50494 · HJ 77.2 · JT/T 617

Cited by

GB/T 33102-2025Methane

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GB/T 31058-2026|GB/T 31986-2026|GB/T 31987-2026|GB/T 32386-2026|GB/T 35995-2026|GB/T 47882-2026

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