Varian Refinery Gas Analyzers handbook
Contents
1. Figure 1 The 450 GC RGA has outstanding flexiblity analytical power and robustness Varian offers three RGA systems to meet the widest range of analysis requirements P Standard RGA A three channel 450 GC with a multi valvedesignusingbothcapillaryandpackedcolumns The first channel is optimized for the analysis of permanent gases the second is designed for light hydrocarbons and the third specifically for hydrogen The system is configured and fully tested in accordance with industry standard methods Total analysis time for all components is less than 25 minutes Page 2 T 1 20 24 Min 49 Figure 2 The separation of light hydrocarbons using the Standard RGA Please refer to Table 2 for peak identification 2 3 4 5 6 Min Figure 3 Analysis of the permanent gases using a Rapid RGA Please refer to Table 2 for peak identification gt Rapid RGA A three channel 450 GC that utilizes a multi valve design in which the packed columns used in the Standard RGA are replaced by micro packed columns in both the hydrogen and permanent gas channels Since the micro packed columns are installed in a separate heated zone the capillary columns located in the GC oven can be temperature programmed in a more aggressive manner This provides a substantial reduction in overall analysis time from up to 25 minutes to 5 minutes or 7 minutes with H S for high sample analysis2. MS 12 Propylene 25 Butyne f 13 iso Butane 26 C6 e g n Hexane 16 Re o M R U k ie J A 10 15 20 25 30 35 SEC 40 Varian Inc VARIAN www varianinc com North America 800 926 3000 925 939 2400 Europe The Netherlands 31 118 67 1000 Asia Pacific Australia 613 9560 7133 Latin America Brazil 55 11 3238 0400 Other sales offices and dealers throughout the world check our Web site Chromatography Spectroscopy Mass Spectrometry Magnetic Resonance Spectroscopy and Imaging X Ray Crystallography Dissolution e Consumables Data Systems e Vacuum Galaxie Varian and the Varian logo are trademarks or registered trademarks of Varian Inc in the U S and other countries 2009 Varian Inc Page 4 S1 02252 B 2 10
3. Varian Refinery Gas Analyzers A FAMILY OF OPTIMIZED GC ANALYSIS SOLUTIONS Qr a i a d i P 4i mi Key Benefits gt A complete range of refinery gas analysis RGA solutions Varian offers three RGA solutions to meet the broadest range of stream sample types and throughput requirements gt A powerful easy to use GC solution Varian s 450 GC or 490 GC Micro GC and Galaxie Chromatography Software is a very powerful combination designed to achieve the best possible results In addition these systems do not require a high degree of operator P A highly flexible solution for analysis All Varian s RGA solutions can be configured to analyze gas and pressurized liquids LPG through the use of a fully integrated Micro Gasifier giving the flexibility to accommodate a wide range of stream types The source and composition of refinery gases varies considerably Measuring gas composition precisely and accurately is a significant challenge in today s refinery operations Varian s refinery gas analyzers are designed to deliver superior reliable results forawide range of sources and analysis throughput requirements gt Operational procedures are fully documented All Varian RGA analyzers not only incorporate proven GC hardware and software but also arrive pre loaded with analysismethods andincludedocumentationspecificto the application required DA comprehensive single vendor solution Varia
4. demand However because micro packed columns have reduced sample capacity streams containing a high concentration of some components e g propylene steam may require some hardware tuning by Varian Varian Refinery Gas Analyzers analysis 10 Peak No report Peak Nel ante Channel RT min Result g l Norm Table 2 Multiple channels of data are conveniently combined into a single Area uV Sec 1 CO Front TCD 2 6000 0 1000 0 0632 13376 2 CH Front TCD 2 9550 29 9800 18 9449 4139442 3 CH Front TCD 3 5367 17 9900 11 3682 2867688 4 CH Front TCD 5 0283 0 5020 0 3172 49786 26 i 5 O Front TCD 9 9200 0 0000 0 0000 37325 6 N Front TCD 10 3267 1 1990 0 7577 2122071 z i i y Min 5 7 CH Front TCD 11 1917 11 9900 7 5767 1394584 Figure 4 The analysis of light hydrocarbons using the Rapid RGA with a i ac complete separation in less than five minutes PleaserefertoTable2for P Mide TOD 1O70 PONO AESI P peak identification 10 C5 Rear FID 2 9217 0 1000 0 0632 58164 11 Methane Rear FID 3 7350 11 9900 7 5767 1492388 12 Ethane Rear FID 4 1283 17 9900 11 3682 4480322 13 Ethylene Rear FID 4 7217 29 9800 18 9449 7411134 14 Propane Rear FID 6 1933 0 1990 0 1258 71402 15 Propylene Rear FID 0 0000 0 0000 0 0000 0 16 i Butane Rear FID 0 0000 0 0000 0 0000 0 17
5. ional system based on the 490 GC Micro GC The 490 GC incorporates a novel micro electricalmechanicalsystem MEMS basedinlet anddetectorwithhighperformancecapillarycolumnsinfour individual channels Each channel is optimized for specific RGA analytes yielding a total analysis cycle time of less than three minutes Due to the use of MEMS components in the Micro GC its Sample capacity is reduced in comparison to the 450 GC based systems Therefore it is more suitable for sample streams with low sample component concentration Figure 6 The 490 GC Micro GC RGA is extremely small at only 6 inches wide Channel 1 Permanent gases 4 Channel 3 C3 C5 Hydrocarbons 40 lo Channel 4 C5 and Higher Hydrocarbons 22 26 i Ti 15 20 25 30 35 40 45 50 55 SEC go Figure 7 Refinery gas separations on the 490 GC Micro GC Peak Identification 1 Hydrogen 14 n Butane 2 Oxygen 15 Propadiene 3 Nitrogen 16 Acetylene L 2 n 4 Carbon monoxide 17 trans 2 Butene J A l 5 Carbon dioxide 18 1 Butene os eee 120 6 Hydrogen sulfide 19 iso Butene 7 Methane 20 cis 2 Butene 8 Ethane 21 iso Pentane 9 Ethylene 22 n Pentane 10 Propane 23 1 3 Butadiene Channel 2 C2 Hydrocarbons 11 Cyclopropane 24 Propyne 5 CO
6. n provides complete solutions The hardware software application optimization documentation installation and performance verification are all provided by Varian offering an all inclusive convenient analysis solution NOTICE This document contains references to Varian Please note that Varian Inc is now part of Agilent Technologies For more information go to www agilent com chem oh Agilent Technologies Page 1 Varian Refinery Gas Analyzers Varian Solutions for Refinery Gas Analysis Typical sources for refinery gases include atmospheric or FCC overheads ethylene propylene production fuel gas stack gas and off gas from desulfurization The physical stream types range from gas to highly pressurized gas or liquid Varian s refinery gas analyzers RGA are turnkey systems pre configured and tuned at the factory to conformtoindustrystandardmethodsincluding UOP539 DIN 51666 and ASTM D2163 The RGA systems are based either on the Varian 450 GC or 490 GC All analyzers employ a proven and optimized multi channel approach to determine the concentration of individual saturated and unsaturated hydrocarbon components up to and including C5 C6 and higher components as a composite peak and all permanent gases including hydrogenandhydrogensulfideinasingle analysis Included in every system is Varian s powerful Galaxie Software to provide complete analyzer control data acquisition and flexible report generation
7. n Butane Rear FID 0 0000 0 0000 0 0000 0 18 Propadiene Rear FID 0 0000 0 0000 0 0000 0 19 Aceylene Rear FID 0 0000 0 0000 0 0000 0 20 t 2 Butene Rear FID 18 5050 0 0990 0 0626 138647 21 1 Butene Rear FID 0 0000 0 0000 0 0000 0 22 i Butene Rear FID 19 5167 0 0990 0 0626 44492 23 cis 2 Butene Rear FID 0 0000 0 0000 0 0000 0 Figure 5 Picture 1 shows a traditional RGA with all columns mounted 24 A ee ee ee ka in oven Picture 2 shows the micro packed columns mounted in the 25 Methyl Rear FID 0 0000 0 0000 0 0000 0 separate heated zone in the Rapid RGA actylene Totals 158 2480 100 0000 22817242 Table 1 Varian RGA Analyzer Characteristics Characteristics Standard RGA Rapid RGA Micro GC RGA No of Channels Detectors Used 3 3 4 No of Column Ovens 1 2 4 Analysis Time 25 min 5 min 7 min with H S 2 5 min Repeatability lt 1 lt 1 lt 1 Linear Bench Space Required 66 cm 26 in 66 cm 26 in 15 cm 6 in Minimum Component Detection Level 0 01 all components except H S 0 05 0 01 all components except H S 0 05 0 01 all components except H S 0 05 Suitability Typical Refinery Gas Excellent Excellent Excellent Impurities in Bulk Ethylene Excellent Excellent Good Impurities in Bulk Propylene Excellent Excellent Not Recommended Impurities in Bulk C4 Good Good Not Recommended Page 3 Varian Refinery Gas Analyzers gt Micro GC RGA A four channel multi dimens
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