【国外标准】 Standard Test Method for Chemical Composition of Gases by Mass Spectrometry

5.1 A knowledge of the composition of refinery gases is useful in diagnosing the source of plant upsets, in determining the suitability of certain gas streams for use as fuel, or as feedstocks for polymerization and alkylation, and for monitoring the quality of commercial gases.1.1 This test method covers the quantitative analysis of gases containing specific combinations of the following components: hydrogen; hydrocarbons with up to six carbon atoms per molecule; carbon monoxide; carbon dioxide; mercaptans with one or two carbon atoms per molecule; hydrogen sulfide; and air (nitrogen, oxygen, and argon). This test method cannot be used for the determination of constituents present in amounts less than 0.1 mole %. Dimethylbutanes are assumed absent unless specifically sought.NOTE 1: Although experimental procedures described herein are uniform, calculation procedures vary with application. The following influences guide the selection of a particular calculation: qualitative mixture composition; minimum error due to components presumed absent; minimum cross interference between known components; maximum sensitivity to known components; low frequency and complexity of calibration; and type of computing machinery.Because of these influences, a tabulation of calculation procedures recommended for stated applications is presented in Section 12 (Table 1).Serial No. . . . . . . . . . . 7 8 9 10 11 12 13Name or Application CommercialPropane CommercialButane BB Stream(CrackedButanes) Dry GasCrackedFuel Gas Mixed Isoand NormalButanes ReformerMake-UpGas Unstabi-lized FuelGasComponent O P M O P M OC PC M O P M O P M O P M OC PC MHydrogen ... ... ... ... ... ... ... ... ... 15  2 M ... ... ... 10  2 M 16  2 MMethane ... ... ... ... ... ... ... ... ... 14 16 M ... ... ...  9 16 M 15 16 MEthyleneE 7 26 M ... ... ... ... ... ... 12 26 M ... ... ... ... ... ... 13 26 MEthane 6 30 M ... ... ... ... ... ... 11 30 M ... ... ...  7 30 M 12 30 MPropene 5 42 M 7 42 M 6 42 M 10 42 M ... ... ... ... ... ...  8 42 MPropane 3 44 M 4 44 M 4 44 M  7 44 M 3 44 M  5 44 M  6 44 MButadiene ... ... ... ... ... ... 1 54 M  3 54 M ... ... ... ... ... ...  2 54 MButene-1 1 56 M 1 56 M 7 41 M  1 ... ... ... ... ... ... ... ...  9 41 MButene-2 1 56 M 1 56 M 8 56 M  1 56 M ... ... ... ... ... ... 10 56 MIsobutene 1F F M 1 F F 9 39 M  1 F ... 4 43 M ... ... ... 11 39 MIsobutane 4 43 M 5 43 M 5 43 M  8 43 M 1 58 M  6 43 M  7 43 Mn-Butane 2 58 M 2 58 M 2 58 M  4 58 M ... ... ...  2 58 M  3 58 MPentenes ... ... ... 6 70 M G 70 U  9 70 M ... ... ...  3 57 M ... 70 UIsopentane ... ... ... 3 57 M 3 57 M  5 57 M 2 57 M  4 72 M  4 57 Mn-Pentane ... ... ... ... ... ... ... ... ...  6 72 M ... ... ... ... ... ...  5 72 MBenzene ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... H H DHexanes ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... H H DC6 cyclic paraffins ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... H H DHexanes ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... H H DToluene ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... H H DHydrogen sulfide ... ... ... ... ... ... ... ... ... I ... C ... ... ... I I C I I CCarbon dioxide ... ... ... ... ... ... ... ... ... I ... C ... ... ... I I C I I CCarbon monoxide ... ... ... ... ... ... ... ... ... 13 28 M ... ... ...  8 28 M 14 28 MNitrogen ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ...Air ... ... ... ... ... ... ... ... ...  2 32 M ... ... ...  1 32 M  1 32 MAcid Gases ... ... ... ... ... ... ... ... ... I ... C ... ... ... I I C I I CResidualE 8 27 M 8 27 M 10 27 M 16 14 M 5 27 M 11 14 M 17 14 MResidualE 9 29 M 9 29 M 11 29 M 17 15 M 6 29 M 12 15 M 18 15 MResidualE ... ... ... ... ... ... ... ... ... 18 27 M ... ... ... 13 27 M 19 27 MResidualE ... ... ... ... ... ... ... ... ... 19 29 M ... ... ... 14 29 M 20 29 MSerial No. . . . . . . . . . . 14 15 16Name or Application H2-C6 Cracked Gas H2-C6 Straight Run Gas Light Refinery GasComponent O P M O P M O P MHydrogen  1  2 M  1  2 M 20  2 UMethane  2 16 M  2 16 M 17 16 MEthylene  4 26 M ... ... ... 14 26 MEthane  7 30 M  5 30 M 13 30 MPropene 11 42 M ... ... ... 12 42 MPropane  6 29 M  4 29 M 10 29 MButadiene 15 54 M ... ... ... ... ... ...Butane-1 ... ... ... ... ... ... 11 56 MButene-2 16 56 M ... ... ... ... ... ...Isobutene ... ... ... ... ... ... ... ... ...Isobutane 12 43 M  9 43 M  9 43 Mn-Butane 18 58 M 14 58 M  8 58 MPentenes 21 70 M ... ... ... 15 70 MIsopentane 17 57 M 13 57 M  7 57 Mn-Pentane 22 72 M 18 72 M  6 72 MBenzene ... ... ... 19 78 M  5 78 UHexanes 23 84 M ... ... ...  4 84 UC6 cyclic paraffins ... ... ... 20 84 M ... ... ...Hexanes ... ... ... 17 71 M  3 86 UToluene ... ... ... 21 92 M ... ... ...Hydrogen sulfide  9 34 M  7 34 M  1 34 UCarbon dioxide 13 44 M 10 44 M 16 44 UCarbon monoxide ... ... ... ... ... ... 18 12 UNitrogen  5 28 M ... ... ... 19 28 UAir  8 32 M  6 32 M  2 32 UWater  3 18 M  3 18 M ... ... ...Cyclobutane ... ... ... 12 56 M ... ... ...Cyclopentene 20 67 M ... ... ... ... ... ...Pentadienes 20 67 M ... ... ... ... ... ...Cyclopentane ... ... ... 16 70 M ... ... ...Methylmercaptan 14 48 M 11 48 M ... ... ...Ethylmercaptan 19 62 M 15 62 M ... ... ...Residual 41 10 41 M  8 41 M ... ... ...Residual 14 24 14 M 22 14 M ... ... ...NOTE 2: This test method was developed on Consolidated Electrodynamics Corporation Type 103 Mass Spectrometers. Users of other instruments may have to modify operating parameters and the calibration procedure.1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.1.3 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.