Gas chromatography system 5320

sampling

Accurately quantify total fluorinated contaminants in the low parts-per-million (ppm) range in liquid propane or liquid butane process stream samples with OI Analytical’s FBA 5320. Overview The OI Analytical FBA 5320 is a laboratory fluorinated by-products analyzer (FBA) designed to quantify total fluorinated contaminants in samples from liquid propane or liquid butane process streams. The analyzer is based on an Agilent 7890 gas chromatograph (GC) equipped with an automated liquid sampling valve for sample introduction, a packed-inlet injection port, a stainless steel column, and 5320 Electrolytic Conductivity Detector (ELCD) configured for fluoride detection. The FBA 5320 accurately detects total fluoride concentrations in the low parts-per-million (ppm) range. Principle of Operation The automated liquid sampling valve injects a 2-µL aliquot of an LPG sample into the 1/16-inch O.D. x 55-foot long stainless steel column maintained at 100 °C inside the GC oven. Fluoride compounds eluting from the GC column enter the base of a high-temperature reactor installed in a GC detector port. The compounds are catalytically converted to ionizable HF gas inside the Nickel reaction tube. HF Alkylation The Hydrofluoric (HF) Alkylation process catalytically combines C3 – C5 olefins with isobutane to produce motor fuel alkylate.1 There is an increasing demand for alkylate because of its properties as a low-sulfur, high-octane blending component for unleaded and reformulated gasoline.