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GB/T 27894.5-2012: Natural gas -- Determination of composition with defined uncertainty by gas chromatography -- Part 5: Determination of nitrogen, carbon dioxide and C1 to C5 and C+6 hydrocarbons for a laboratory and on-line process application using three columns
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Natural gas -- Determination of composition with defined uncertainty by gas chromatography -- Part 5: Determination of nitrogen, carbon dioxide and C1 to C5 and C+6 hydrocarbons for a laboratory and on-line process application using three columns
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GB/T 27894.5-2012
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Basic data | Standard ID | GB/T 27894.5-2012 (GB/T27894.5-2012) | | Description (Translated English) | Natural gas -- Determination of composition with defined uncertainty by gas chromatography -- Part 5: Determination of nitrogen, carbon dioxide and C1 to C5 and C+6 hydrocarbons for a laboratory and on-line process application using three columns | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | E24 | | Classification of International Standard | 75.060 | | Word Count Estimation | 15,173 | | Quoted Standard | GB/T 14850-2008; GB/T 27894.1-2011; ISO 6142; ISO 6974-2 | | Adopted Standard | ISO 6974-5-2000, IDT | | Regulation (derived from) | National Standard Notice No. 28, 2012 | | Issuing agency(ies) | General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China | | Summary | This standard specifies the use of three Genzhu gas system consisting of quantitative analysis by gas chromatography. This method is applicable to a range of natural gas, the condensate does not contain any liquid hydrocarbon/water samples of a convention | GB/T 27894.5-2012: Natural gas -- Determination of composition with defined uncertainty by gas chromatography -- Part 5: Determination of nitrogen, carbon dioxide and C1 to C5 and C+6 hydrocarbons for a laboratory and on-line process application using three columns
---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.
ICS75.060
E24
National Standards of People's Republic of China
GB/T 27894.5-2012/ISO 6974-5.2000
Natural gas under certain uncertainty by gas chromatography.
Determination of the composition of Part 5. Laboratory and on-line technology
System using three columns determination of nitrogen, carbon dioxide
And C1 to C5 hydrocarbons and C 6 of
bygaschromatography-Part 5. Determinationofnitrogen, carbon
dioxideandC1toC5andC 6 hydrocarbonsforalaboratory
(ISO 6974-5.2000, IDT)
Issued on. 2013-03-01 2012-11-05 implementation
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
Standardization Administration of China released
Foreword
GB/T 27894 "natural gas under certain uncertainty by gas-phase chromatography composition" is divided into six parts.
--- Part 1. Analysis of guidelines;
--- Part 2. measurement system characteristics and statistics;
--- Part 3. with two packed columns Determination of hydrogen, helium, oxygen, nitrogen, carbon dioxide and hydrocarbons up to C8;
--- Part 4. laboratory and on-line measuring system using two columns Determination of nitrogen, carbon dioxide and C1 to C5 and C 6 of
Hydrocarbons;
--- Part 5. using laboratory and on-line processing system three columns Determination of nitrogen, carbon dioxide and C1 to C5 and C 6 of
Hydrocarbons;
--- Part 6. Determination of capillary column with three of hydrogen, helium, oxygen, nitrogen, carbon dioxide and hydrocarbons C1 to C8's.
This is Part 5 GB/T 27894 in.
Rules in this section in accordance with GB/T 1.1-2009 given compilation.
This section uses the translation method identical with ISO 6974-5.2000 "gas at a certain uncertainty by gas chromatography to determine the composition
Part 5. using laboratory and on-line processing system three columns Determination of nitrogen, carbon dioxide and C1 to C5 and C 6 hydrocarbons. "
Consistent correspondence between this standard international documents and normative references of the following documents.
--- GB/T 5274-2008 gas analyzer calibration weighing method for preparing a mixed gas (ISO 6142.2001, IDT);
--- GB/T 27894.2-2011 natural gas under certain uncertainty by gas chromatography to determine the composition Part 2. Measurement
Characteristics of the system and mathematical statistics (ISO 6974-2.2001, IDT).
This part of the National Gas Standardization Technical Committee (SAC/TC244) centralized.
This section drafted by. China Petroleum Daqing Oilfield Engineering Co., Ltd., China Petroleum and Natural Gas Research Institute, Southwest Oil and Gas Field Company.
The main drafters of this section. Tan for the group, Li Nan, Wei Che-ho, Luo Qin, Zeng level.
GB/T 27894.5-2012/ISO 6974-5.2000
Natural gas under certain uncertainty by gas chromatography.
Determination of the composition of Part 5. Laboratory and on-line technology
System using three columns determination of nitrogen, carbon dioxide
And C1 to C5 hydrocarbons and C 6 of
1 Scope
This section GB/T 27894 gives a quantitative analysis using three Genzhu system consisting of natural gas by gas chromatography. This method is applicable
A range of natural gas, conventional gas does not contain any liquid hydrocarbon condensate/water-sample-line automatic calibration. This method is applicable
Table 1 molar fraction within a predetermined range of gas components. These ranges do not represent the detection limit, and that the use of this method in this range can be up to
To a predetermined precision. Although there is a sample of one or more components can not be detected, but this method can still apply.
Use this section with GB Part 1 and Part 2/T27894 combination.
Table 1 Scope
Component mole fraction range /%
Nitrogen
carbon dioxide
Methane
Ethane
Propane
Isobutane (2-methylpropane)
N-butane
Neopentane (2,2-dimethyl propane)
Isopentane (2-methylbutane)
N-pentane
Hexane (all C6 and higher hydrocarbons)
0.001 to 15.0
0.001 to 8.5
75 to 100
0.001 to 10.0
0.001 to 3.0
0.001 to 1.0
0.001 to 1.0
0.001 to 0.5
0.001 to 0.5
0.001 to 0.5
0.001 to 1.0
Note 1. The higher hydrocarbons n-pentane with "virtual components" C 6 represents, in this form as a component of test and calibration peak is the nature of C 6 components Yes.
By extending the analysis or a detailed analysis of the historical data calculated by monomer C6 and higher hydrocarbons.
Note 2. Oxygen is not a normal component of natural gas, gas samples taken online instrument generally do not contain oxygen, so that if the air because it contains oxygen deposit
In the oxygen it will be measured together with the nitrogen. Since the detector has a slight difference in response to oxygen and nitrogen, and the resultant (nitrogen, oxygen) results
A lesser degree of error. However, the results of gas/air mixture is still quite accurate, since the oxygen, nitrogen, both for two-component hot
None contributions.
Note 3. helium and argon content is assumed to be negligible and no change, and therefore does not require determination of helium and argon.
2 Normative references
The following documents for the application of this document is essential. For dated references, only the dated edition applies to this article
Member. For undated references, the latest edition (including any amendments) applies to this document.
GB/T 27894.5-2012/ISO 6974-5.2000
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