Analysis of Fluorine, Chlorine and Sulfur in LPG (C-IC) ASTM 7994 and UOP 1001 by CIC combustion chamber ion chromatography

Introduction

  • International Test Methods ASTM D7994 and UOP 1001 focus on the determination of Total Fluorine, Chlorine, and Sulfur in Liquid Petroleum Gases by oxidative pyrolysis combustion followed by IC (combustion chamber IC) detection.
  • Together, these test methods cover the range of 1 – 1500 mg/kg for
  • Process streams with similar characteristics and other materials such as butylene, propylene, and olefins.
  • Total Fluorine, Chlorine, and Sulfur in LPG can be harmful to many chemical catalytic processes,
  • Leading to corrosion and contributing to the release of pollutants
  • In particular, halogens in process streams can damage catalysts in refineries.
  • Furthermore, automotive fuels must be desulfurized to less than 10 ppm, which limits sulfur specifications.
  • Typically, final LPG products also have specification limits on the Fluorine content.
  • In this application note, the total amounts of Fluorine (expressed as fluoride), Chlorine (expressed as chloride)
  • and Sulfur (expressed as sulfate ion) are determined in various LPG samples.

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Method

  • The Xprep C-IC with GLS Autosampler is a reliable and safe solution for the analysis of specific halogens
  • and Total Sulfur in Gaseous Hydrocarbons and Liquefied Petroleum Gases.
  • A sample loading system is required to accurately introduce the sample into the oxidation zone.
  • The GLS acts as a gas or liquid LPG sample injector with controlled expansion.
  • The carrier gas (Ar or He) transfers the gas cloud into the oxidation zone of the Xprep C-IC combustion instrument.
  • The analysis of samples contained in pressurized vessels is often considered a challenge.
  • The associated sampling systems must be able to handle a variety of sample matrices contained in vessels at different pressure levels.
  • TE Instruments has implemented several features in the GLS to improve the safety of Gas & LPG
  • Sampling, including:
  • Gas Leak Sensor – Automatically aborts all operations when a hydrocarbon spill is detected.
  • Real-time software notifications.
  • Alerts the operator to potential hazards and refers to SOP for LPG analysis.
  • Automatic inlet port shut-off – Minimizes the risk of leakage.
  • Automatic safety lock on inlet ports – Prevents sample cylinder from disconnecting as long as pressure is detected on the sample inlet port.

Result

Sắc kí ion halogen được phân tích trên hệ thống CIC từ TE Instruments với IC

Halogen ion chromatography was analyzed on a CIC system from TE Instruments with IC

Contact

APPLICATIONS OF CIC ION CHROMATOGRAPHY COMBUSTION CHAMBER in oil and gas, LPG, polymer plastics, electronic components, waste treatment, environmental pollution, leather shoes, textile.

ORGANIC FLUORINE ANALYZER AOF ADSORPTION BY CIC ION CHROMATOGRAPHY EPA 1621 PFAS

Analysis of Fluorine, Chlorine and Sulfur in LPG (C-IC) ASTM 7994 and UOP 1001 by CIC combustion chamber ion chromatography

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