Detection Target
Determination of chemical composition of natural gases and similar gaseous mixtures
Overview
This solution conforms to ASTM D1945 Standard Test Method for Analysis of Natural Gas by Gas Chromatography. It can analyze the chemical composition of natural gases and similar gaseous mixtures.
Introduction
Components in a representative sample are physically separated by gas chromatography (GC) and compared to calibration data obtained under identical operating conditions from a reference standard mixture of known composition. The numerous heavy-end components of a sample can be grouped into irregular peaks by reversing the direction of the carrier gas through the column at such time as to group the heavy ends either as C5 and heavier, C6 and heavier, or C7 and heavier. The composition of the sample is calculated by comparing either the peak heights, or the peak areas, or both, with the corresponding values obtained with the reference standard.
Apparatus
HKL-1945 GC for Analysis of Natural Gas
Configuration
6-valve, 2-column (packed), TCD
Sample type
Natural gas
Components separated
Isobutane, n-butane, isopentane, n-pentane, carbon dioxide, ethane, hydrogen sulfide, n-propane, argon/oxygen composite, nitrogen, methane
Lower detection limits
100ppm for most components, 400ppm for propane, 500ppm for hydrogen sulfide
Chromatogram
Configuration
NO. | Name | Specification | Qty |
1 | HKL-1945 GC for Analysis of Natural Gas | 1. Large-screen LCD English display, power-on self-test, wide-range self-diagnosis function, intelligent fuzzy control back door opening system, over-temperature power-off protection function, six-step rise. 2. Configuration: host + thermal conductivity detector + double packed column inlet | 1 set |
2 | Six-way valve | Dedicated used for gas sampling | 2 |
3 | Hydrogen generator | Purity: 99.999 Output flow rate: 0~300/min Out put pressure: 0-0.4MPa Rated power:＜150W | 1 |
4 | Natural gas work station | For data collection | 1 |
5 | Stainless steel packed column | 10m*3mm For: Methane, carbon dioxide, ethane, propane, isobutane, n-butane, octane, isopentane, n-pentane, hexane | 1 |
6 | Stainless steel packed column | 2m*3mm For: Hydrogen, oxygen, nitrogen | 1 |
7 | Standard gas | For calibration | 2 bottle |
8 | Attached one set of accessories (including liquid syringes, tools and accessories) (see packing list) | ||