E24 天然气 标准查询与下载

BS 7859:1996 天燃气.热值、密度、相对密度和由化合物推导的沃泊指数的计算

This International Standard specifies methods for the calculation of the superior calorific value, inferior calorific value, density, relative density and Wobbe index of dry natural gases, natural gas substitutes and other combustible gaseous fuels, when the compo-sition of the gas by mole fraction is known. The methods provide a means of calculating the proper-ties of the gas mixture at commonly used metric ref-erence conditions. The methods of calculation require values for various physical properties of the pure components; these values are provided in tables and their sources are identified. Methods are given for estimating the precision of calculated properties. The methods of calculation of the values of properties on either a molar or mass basis are applicable to any dry natural gas, natural gas substitute or other combustible fuel which is normally gaseous. For the calculation of the values of properties on a volumetric basis, the methods are restricted to gases consisting preponderantly of methane (not less than 0,5 mole fraction). Examples of calculations are given in annex D for the recommended methods of calculation. NOTES 1 The symbols used in this International Standard, to-gether with their meanings, are given in annex A. 2 The qualifiers "higher", "upper", "total" and "gross" are, for the purposes of this International Standard, syn-onymous with "superior"; likewise, "lower" and "net" are synonymous with "inferior". The term "heating value" is synonymous with "calorific value"; "specific gravity" is synonymous with "relative density"; "Wobbe number" is synonymous with "Wobbe index"; "compressibility factor" is synonymous with "compression factor". 3 If the composition of the gas is known by volume frac-tions these must be converted to mole fractions (see annex C). Note, however, that the derived mole fractions will have uncertainties greater than those of the original volume fractions. 4 For the purposes of this International Standard, the sum of the mole fractions used must be unity to the nearest 0,000 1, and all components with mole fractions greater than 0,000 05 must be accounted for. 5 For the calorific value calculated on a volumetric basis, there are limitations on the amounts of components other than methane which may be present. It is impossible to be definitive on this matter, but the following guidelines may be useful: N2 should not be present in amounts exceeding 0,3 mole fraction; CO2 and C2H6 should each not exceed 0,15 mole frac-tion; no other component should exceed 0,05 mole fraction. Given these limits, the expected trueness of the calculation is within 0,1 %. 6 The effects of water vapour on the calorific value, either directly measured or calculated, are discussed in annex F. 7 For the methods of calculation described to be valid, the gas must be above its hydrocarbon dew-point at the pre-scribed reference conditions. 8 The values of basic physical property data are subject to revision as more accurate values become available from authoritative sources.

Natural gas - Calculation of calorific values, density, relative density and Wobbe index from composition

BOCA CHAPTER 36 NFPC-1996 液化石油气体

The fire prevention code official shall recommend to the chief administrative official of the municipality the location or relocation of new or existing fire hydrants and the placement or replacement of inadequate water mains located upon public prope

Liquefied Petroleum Gases

BOCA CHAPTER 18 NFPC-1996 天然气和石油生产

The format and provisions of The BOCA National Propero Maintenance Code are designed to provide units of government with an effective regulatory means of providing minimum health and safety requirements for existing buildings and structures.

Gas and Oil Production

ISO 6976:1995 天燃气.热值、密度和相对密度及化合物沃泊指数的计算

Specifies methods for the calculation of the superior calorific value and the inferior calorific value, density, relative density and Wobbe index of dry natural gas and other combustible gaseous fuels, when the composition of the gas by mole fraction is known. Replaces the first edition, which has been technically revised.

Natural gas - Calculation of calorific values, density, relative density and Wobbe index from composition

ISO 10723:1995 天然气 在线分析系统的性能评定

Describes a method of assessing whether an analytical system for natural gas is satisfactory provided that the analytical requirements have been clearly defined and the analytical and calibration procedures have been fully described.

Natural gas - Performance evaluation for on-line analytical systems

CSA CGA NGV 12.3-M95-1995 天然气动力车辆的燃料系统元件.第1版.CSA/ANSI/AGA NGV3.1-1995

Fuel System Components for Natural Gas Powered Vehicles First Edition; CSA/ANSI/AGA NGV3.1-1995

Fuel System Components for Natural Gas Powered Vehicles First Edition

BS EN ISO 6326-3:1994 天然气.硫化物的测定.用电位测定法对硫化氢,硫醇式硫和硫化羰式硫的测定

Specifies a potentiometric method for components in natural gas in the concentration range equal to or above 1 mg/m3. The gas must be free of dust, mist, oxygen, hydrogen cyanide and carbon disulfide. The method is not recommended for gases containing more than approximately 1,5 % (V/V) carbon dioxide.

Natural gas - Determination of sulfur compounds - Determination of hydrogen sulfide, mercaptan sulfur, and carbonyl sulfide sulfur by potentiometry

BS EN ISO 6326-5:1994 天然气.硫化物的测定.林格聂尔(lingener)燃烧法

Specifies a method for the determination of total sulphur in natural gas. It is applicable to gases with sulphur contents between 0,5 mg/m3 and 1 000 mg/m3. With a total sulphur content of more than 0,1 mg sulphur in the absorption solution, visual titration with an indicator can be chosen, whereas for lower contents turbidimetric titration is preferable.

Natural gas - Determination of sulfur compounds - Lingener combustion method

BS EN ISO 10101-3:1994 天然气.卡尔费舍尔法测定水含量.库仑滴定法

Natural gas - Determination of water by the Karl Fischer method - Coulometric procedure

BS EN ISO 10101-1:1994 天然气.卡尔费舍尔法测定水含量.简介

Natural gas - Determination of water by the Karl Fischer method - Introduction

BS EN ISO 10101-2:1994 天然气.卡尔费舍尔法测定水含量.滴定法规程

Natural gas - Determination of water by the Karl Fischer method - Titration procedure

ASTM D1826-94(2010) 用连续记录量热器测定天燃气范围中煤气热值的标准试验方法

This test method provides an accurate and reliable method to measure the total calorific value of a fuel gas, on a continuous basis, which is used for regulatory compliance, custody transfer, and process control.1.1 This test method covers the determination with the continuous recording calorimeter (Note 1) of the total calorific (heating) value of fuel gas produced or sold in the natural gas range from 900 to 1200 Btu/standard ft3. Note 18212;An extensive investigation of the accuracy of the Cutler-Hammer recording gas calorimeter, when used with gases of high heating value, was made by the National Bureau of Standards in 1957 under a research project sponsored by the American Gas Association. 1.2 The subjects covered in this test method appear in the following sections:

Standard Test Method for Calorific (Heating) Value of Gases in Natural Gas Range by Continuous Recording Calorimeter

ASTM D1826-94(2003) 用连续记录量热器测定天燃气范围中煤气热值的标准测试方法

This test method provides an accurate and reliable method to measure the total calorific value of a fuel gas, on a continuous basis, which is used for regulatory compliance, custody transfer, and process control.1.1 This test method covers the determination with the continuous recording calorimeter (Note 1) of the total calorific (heating) value of fuel gas produced or sold in the natural gas range from 900 to 1200 Btu/standard ft3. Note 18212;An extensive investigation of the accuracy of the Cutler-Hammer recording gas calorimeter, when used with gases of high heating value, was made by the National Bureau of Standards in 1957 under a research project sponsored by the American Gas Association.1.2 The subjects covered in this test method appear in the following sections:SectionsAir-Gas Ratio Test11Apparatus5Basis of Measurement14Cold Balance Test10Compensation of Complicating Factors13Condition of Gas Sample7Definitions2Installation of Apparatus6MaintenanceAppendix X1Operating PrecautionsAppendix X2Operation and Checking of Apparatus9Precision15Scope1Significance and Use4Standardization of Calorimeter12Standardization, Preliminary, of Calorimeter by Hydrogen8Summary of Test Method31.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

Standard Test Method for Calorific (Heating) Value of Gases in Natural Gas Range by Continuous Recording Calorimeter

ASTM D1826-94(2017) 用连续记录量热器测定天燃气范围中煤气热值的标准试验方法

4.1 This test method provides an accurate and reliable method to measure the total calorific value of a fuel gas, on a continuous basis, which is used for regulatory compliance, custody transfer, and process control. 1.1 This test method covers the determination with the continuous recording calorimeter (Note 1) of the total calorific (heating) value of fuel gas produced or sold in the natural gas range from 900 to 1200 Btu/standard ft3. Note 1: An extensive investigation of the accuracy of the Cutler-Hammer recording gas calorimeter, when used with gases of high heating value, was made by the National Bureau of Standards in 1957 under a research project sponsored by the American Gas Association. 1.2 The subjects covered in this test method appear in the following sections:   Sections Air-Gas Ratio Test 11 Apparatus  5 Basis of Measurement 14 Cold Balance Test 10 Compensation of Complicating Factors 13 Condition of Gas Sample  7 Definitions  2 Installation ......

Standard Test Method for Calorific (Heating) Value of Gases in Natural Gas Range by Continuous Recording Calorimeter

ISO 10101-2:1993 天然气 卡尔·费休法测定天然气中的水 第2部分:滴定法

The principle of the method specified is passing a measured volume of gas through a cell containing a relatively small volume of absorbent solution. Water in the gas is extracted by the absorbent solution and subsequently titrated with Karl Fischer reagent. The design of the cell and the absorbent solution are chosen so as to ensure efficient collection of the water at the high flowrates necessary. Is applicable to water concentrations between 5 mg/cm and 5000 mg/cm.

Natural gas; determination of water by the Karl Fischer method; part 2: titration procedure

ISO 10101-1:1993 天然气.卡尔.菲舍尔法测定水.第1部分:前言

Specifies general requirements for the determination. The principle of the method is reaction of water present in the test sample with iodine and sulfur-dioxide in a pyridine/methanol mixture (Karl Fischer reagent). ISO 10101-2 and ISO 10101-3 specify two individual methods of determination.

Natural gas; determination of water by the Karl Fischer method; part 1: introduction

ISO 10101-3:1993 天然气 卡尔·费休法测定天然气中的水 第3部分:库仑法

The principle of the method specified is passing a measured volume of gas through the titration cell, where the water is absorbed by the anodic solution. The iodine required for the determination of water by the Karl Fischer reaction is generated coulometrically from iodide. The quantity of electricity is directly proportional to the mass of iodine generated and hence to the mass of water determined. Applies to natural gas and other gases which do not react with Karl Fischer reagents. Is applicable to water concentrations between 5 mg/cm and 5000 mg/cm.

Natural gas; determination of water by the Karl Fischer method; part 3: coulometric procedure

BOCA CHAPTER 36 NFPC-1993 液化石油气体

A person shall not willfully fail or refuse to comply with any lawful order or direction of the fire prevention code officiai or to interfere with the compliance attempts of another individual.

Liquefied Petroleum Gases

BOCA CHAPTER 18 NFPC-1993 天然气和石油生产

The following is a listing of the standards referenced in this code, the effective date of the standard, the promulgating agency of the standard and the section(s) of this code that refer to the standard.

Oil and Gas Production

BOCA CHAPTER 36 NFPC COMM-1993 液化石油气体

The following is a listing of the standards referenced in this code, the effective date of the standard, the promulgating agency of the standard and the section(s) of this code that refers to the standard.

Liquefied Petroleum Gases