ASTM D2163 Gas Chromatography for determining Hydrocarbons in LPG

Detection Target

Determination of Hydrocarbons in Liquefied Petroleum (LP) Gases and Propane/Propene Mixtures

Overview

This solution conforms to ASTM D2163 Standard Test Method Determination of Hydrocarbons in Liquefied Petroleum (LP) Gases and Propane/Propene Mixtures by Gas Chromatography. This test method covers the quantitative determination of individual hydrocarbons in liquefied petroleum (LP) gases and mixtures of propane and propene, excluding high-purity propene in the range of C₁ to C₅. Component concentrations are determined in the range of 0.01 to 100 volume percent.

Introduction

Hydrocarbon component distribution of liquefied petroleum gases and propene mixtures is often required for end-use sale of this material. Applications such as chemical feed stocks or fuel require precise compositional data to ensure uniform quality. Trace amounts of some hydrocarbon impurities in these materials can have adverse effects on their use and processing.

The component distribution data of liquefied petroleum gases and propene mixtures can be used to calculate physical properties such as relative density, vapor pressure, and motor octane. Precision and accuracy of compositional data are extremely important when these data are used to calculate various properties of these petroleum products.

Apparatus

HKL-2163 GC for determining Hydrocarbons in LPG

Features

1. With a 320×240 dot matrix 5.7-inch large-screen liquid crystal display, real-time monitoring of temperatures and operating conditions for each channel is perfectly achieved.

2. Automatic startup self-test, six independent temperature control channels, and seven-stage program temperature rise function.

3. Wide-range self-diagnosis function: When an instrument failure occurs, it automatically displays the fault phenomenon, fault code, and fault cause, helping you quickly identify and resolve issues to maintain optimal laboratory working conditions.

4. Over-temperature protection function: Allows arbitrary setting of protection temperatures. If any channel exceeds the set temperature, the instrument automatically cuts off power and alarms.

5. Carrier gas interruption and leakage protection function: When carrier gas pressure is insufficient, the instrument automatically cuts off power and stops heating, effectively protecting the chromatographic column and thermal conductivity detector from damage.

6. Intelligent fuzzy control rear-door opening system automatically tracks temperature and dynamically adjusts the rear-door opening angle, enabling precise temperature control even near room temperature.

7. Equipped with packed column on-column injection, glass liner injection, and capillary split/splitless injection devices with septum purge function, as well as support for installing gas samplers.

8. High-precision dual-stabilized gas flow paths allow installation of up to four detectors simultaneously.

9. Advanced gas flow design enables simultaneous use of hydrogen flame ionization detector and thermal conductivity detector.

10. Eight external event functions support multi-valve switching.

11. Optional electronic flow/pressure display system and built-in workstation device.

Technical Parameters

1. Temperature Control Range: Ambient temperature +5°C to 400°C, Increment: 0.1°C

2. Temperature Control Accuracy: Better than ±0.1°C

3. Programmed Temperature Ramp: Seven stages

4. Heating Rate: 0.1 to 40°C/min

5. Main Unit Dimensions: 555 × 525 × 485 mm

Chromatogram

Configuration