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System GC Solution for Refinery Gas Analysis

Gas compositions produced in refinery plants consist of hydrocarbons, permanent gases, H2S, etc. Analyzing these gases is essential to control the quality of chemical products and plant operation. Shimadzu’s RGA systems, available in numerous configurations, are designed to analyze various compositions in a variety of processes. In research and development for petrochemical and its catalysis field, target compounds often contain high-boiling point compounds and isomers. The Shimadzu CERGA makes it possible to precisely analyze those samples. In addition, calorific value calculation software is compliant with various calculation methods such as BTU and ISO-6976

Natural Gas Analysis System

Recently, natural gas has been recognized as a clean resournce for energy, in addition to being a raw material for chemical products. Recently a cutting-edge drilling technology has increased the use of shale gas. As the production area diversifies, the need for gas composition analysis has increased. Shimadzu addresses analytical requests with a wide system GC lineup. For analysis of liquified gas, such as LPG, a dedicated injector with a vaporizer is available. Both manual injection and online injection are available. The operation software can automatically calculate needed values, such as indexes, calorific values, etc.

Gasoline/Fuel Analysis

A gas chromatograph is used for composition analysis of gasoline and its additives in order to improve fuels’ performance. In addition to excellent performance, Shimadzu’s GC systems improve productivity. For example, the GC-2010 Plus system combines three standards into one to save analytical instrument and labor costs.

Detailed Hydrocarbon Analysis (DHA)

The purpose of detailed hydrocarbon analysis (DHA) is to determine the bulk hydrocarbon group type composition (PONA: Paraffins, Olefins, Naphthenes and Aromatics) of gasoline and other spark-ignition engine fuels that contain oxygenate blends (Methanol, ethanol, MTBE, ETBE, and TAME) according to ASTM D 6730. PONA analyte identification is conducted by matching retention indices with normal hydrocarbon paraffins. However, chromatograms obtained in PONA analyses have an extremely large number of peaks and their analytes may be mislabeled. Without accurate and reproducible retention indices, this may result in erroneous PONA ratios. The GC-2010 Plus incorporates an Advanced Flow Controller that enables highly precise flow control, and makes it easy to analyze and identify detailed hydrocarbons. Shimadzu offers DHA analysis conforming to the following methods: ASTM D 5134, ASTM D 6729, ASTM D 6730, and ASTM D 6733.

Transformer Oil Gas Analysis System (TOGA)

It is necessary to analyze outgas in transformer insulation oil in power plant facilities. Shimadzu offers a System GC compliant with ASTM D 3612 Method B (oil stripper sampling) or ASTM D 3612 Method C (headspace sampling). The GC-2014TOGAS3 system, equipped with a PDD, enables the analysis of more trace amounts of permanent gas than conventional systems.

Impurity Analysis in Bulk Gas

High-purity gas is necessary in industries such as chemical, medical, and foods. Precisely controlled GC enables identification and quantitation of a trace amount of impurities in bulk gas. If the gas resources in a factory consist of multiple lines, a sample line selector SLS-2020 can be utilized to switch sample lines automatically, allowing a single GC to analyze all samples.

System GC

Town Gas Analysis System

Periodical monitoring of calorific values is necessary to ensure a stable supply of town gas. Since Shimadzu’s system GC is robust and designed for automated analysis, it is widely used for 24 hour/day online analysis in this field. Dedicated software is able to calculate calorific values and indexes automatically. Using the sample line selctor SLS-2020, a single system GC can analyse multiple samples without switching the sample line. This saves both running and initial costs.

Trace Sulfur Analysis

Some sulfur compounds are known to be not only hazardous but also catalytic poisons. ppb sulfur analysis is conducted by gas chromatography. The GC-2014PFPD3 combines 1 PFPD and 2 different types of columns to improve separation performance.

Downstream and Others

A gas chromatograph is used for impurity analysis of intermediate or final products in various chemical fields. The table below shows our System GC lineup

Green House Gas Analysis

Gas chromatographs help analyze green house gases in air and soil. In addition to nitrous oxide, which is known by its high global warming potential, CO and CH4 are measured by a single analysis. The GC-2014NCCC3 enables simultaneous analysis of green house gases and other permanent gases.

Tracera UFRGA Series

The Tracera Ultrafast RGA system utilizes the new Barrier Discharge Ionization Detector (BID) technology coupled with a GC-2010 Plus capillary gas chromatograph to create new system GC for ultrafast, high-sensitivity analysis. Since the electrode creating Helium plasma is totally isolated from the carrier gas, there is no chance to contaminate this electrode with a dirty sample. This enables long-term stability.

Complete Extended RGA System GC-2014 CERGA

Shimadzu’s Complete Extended Refinery Gas Analysis (CERGA) system provides complete analytical methods for multiple applications. A dual oven system, together with a liquid sample injection device, liquefied gas injection device and gas injection device, enables the injection of most petroleum samples without making changes to the system flow diagrams. One CERGA system can perform three analyses, such as fast RGA analysis, liquefied hydrocarbon gas sample analysis and liquid hydrocarbon sample analysis.

Distillation Gas Chromatograph System

The Shimadzu simulated distillation system, consisting of a GC-2010 Plus high-performance capillary gas chromatograph and LabSolutions simulated distillation GC analysis software, meets all applicable ASTM, ISO, EN, and JIS standards. Permitting accurate and highly reproducible analysis of high-boiling components in crude oil samples, it is the optimal system for product quality control and process management in oil refinery plants.