Page 33 - Shimadzu Journal vol.8 Issue2

Latest topics 1

Introducing Refinery Gas Analyzer

with trace Sulfur detection

Refinery gas is produced during crude oil refining. Typical com- Shimadzu recently launched highly sensitive Nexis SCD-2030
position is C1-C5 Paraffins, C6+ Paraffins, C2-C5 Olefins and used in well-established High-Speed Refinery Gas Analyzer for
non-condensable gases like H2, O2, N2, CO and CO2. This gas speciation and quantification of trace sulfur components. This
is also used as petrochemical feed stock that is used in several complete system, which uses 4 detectors simultaneously, is very
catalytic processes. Determining the composition of Refinery gas accurate and robust.
and measurement of trace sulfur content is very important. Trace
amount of sulfurs can poison the catalyst used in processes, which This system is in compliance with ASTM D7833, D5504, D5623,
can cost millions of dollars. D1945, D1946, D2163, UOP 539.

Following are the main features of the system
— Robust system uses 2 TCD, 1 FID and SCD detector
— Simultaneous analysis of Hydrocarbons and Sulfur can be performed
— Highest sensitivity and very low maintenance Nexis SCD-2030
— Faster analysis time

For this analysis, process gas stream having all above components
is injected into the system based on Shimadzu Nexis GC- 2030
with 4 detectors - 2 TCDs, FID and SCD. Four sample loops are
filled with sample and injected onto the columns. Respective col-
umns do the separation of required components which are then
analyzed by the respective detectors.

Shimadzu uses parallel valve configuration with backflush for light
gases and light hydrocarbons. This way system becomes very
simple and can be maintained easily.

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