Agilent Technologies 490 Micro GC Biogas Analyzers User Manual
Contents
1. Figure1 The Universal Gas Calibration Standard analyzed on the CP Molsieve channel Biogas Analyzers The Agilent Biogas Analyzers CP PoraPLOT U channel The CP PoraPLOT U channel of the Biogas Analyzer is used to analyze carbon dioxide ethane hydrogen sulfide and n propane This channel and the sample inlet are Ultimetal deactivated which results in improved performance for hydrogen sulfide analysis The chromatogram obtained from the Universal Gas Calibration Standard with the CP PoraPLOT U is shown in Figure 2 If a sample contains hydrogen sulfide the chromatogram resembles Figure 3 mV 25 2 04 8 E S8 e S 2 154 E e 8 E 2 8 E 104 E 05 2 8 is DN E 8 a 22 26 36 38 40 4 44 46 amp 50 Seconds Figure2 The Universal Gas Calibration Standard analyzed on the CP PoraPLOT U channel mV 14 10 0 9 o 0 8 3 o ez a e 07 S 5 3 06 a 2 0 5 8 E E amp o 0 4 E J 22 24 2 28 30 a 34 36 38 40 242 4 46 48 50 Seconds Figure3 mixture with hydrogen sulfide analyzed on the CP PoraPLOT U channel Biogas Analyzers The Agilent Biogas Analyzers CP Sil 5 CB channel n Propane Methyl Acetylene n Butane The CP Sil 5 CB channel of the Biogas Analyzer Extended is used to analyze the hydrocarbon up to n heptane Hydrocarbons that are specified for this analyzer are i butane2. CP Sil 5 CB Carrier gas Argon Helium Helium Injector Temperature C 110 110 110 Injection Time ms 40 40 40 Backflush time s 11 14 Column Temperature C 80 80 60 Pressure kPa 200 150 150 Sample Line temperature C 110 110 110 Invert signal Yes No No For more details of the method see the PDF method file available on the analyzer CD The backflush time must be tuned for each new CP Molsieve and CP PoraPLOT channel 10 Biogas Analyzers Ei Agilent Technologies Agilent Technologies Inc Printed in USA February 2012 G3582 90000
3. gas option Biogas Analyzer Extended The Agilent 490 Micro GC BiogasFirst edition December 2011 Analyzer Extended is used to analyze biogas mixed with other hydrocarbon streams The analysis consists of permanent gases hydrogen sulfide and hydrocarbons up to n heptane The Biogas Analyzer Extended is a quad cabinet equipped with three channels a CP Molsieve 5A a CP PoraPLOT U channel and a CP Sil 5 CB channel with dual carrier gas option Before starting up the Analyzer make sure that correct carrier gases are connected for all channels Argon carrier gas is required for the CP Molsieve channel and Helium for all other channels The required pressure for all carrier gases is 550 kPa 80 psi More detail concerning the Agilent Micro GC can be found in the Agilent 490 Micro GC user manual Ze Agilent Technologies 3 The Agilent Biogas Analyzers Checkout information The Biogas Analyzer is factory tuned including appropriate settings for backflush times for the CP Molsieve 5A and CP PoraPLOT U channel Final checkout of the Agilent 490 Micro GC Biogas Analyzers is performed with a Universal Gas Calibration standard This contains helium neon hydrogen oxygen nitrogen methane ethane ethylene carbon dioxide carbon monoxide acetylene n propane methyl acetylene and n butane Not all components of this Calibration Standard are specified for the Biogas Analyzers This calibration standard is used as a reference for the performan
4. n butane neo pentane n pentane iso pentane n hexane and n heptane The Universal Gas Calibration Standard does not contain all these hydrocarbons A reference chromatogram is included in this manual for the missing components Analyzing the Universal Gas Calibration Standard with the CP Sil 5 CB results in the chromatogram shown in Figure 4 If a hydrocarbon mixture up to n hexane is used the chromatogram resembles Figure 5 ree n Hexane n Heptane 50 60 70 80 90 100 110 120 130 Seconds Figure 4 The Calibration Standard analyzed on CP Sil 5 CB channel mV 3004 2504 2004 150 100 504 Composite Air peak Eme n Propane i Butane n Butane neo Pentane i Pentane n Pentane n Hexane gt p 20 25 30 35 40 45 50 55 60 Seconds Figure5 hydrocarbon mixture up to n Hexane analyzed on the CP Sil 5 CB channel Biogas Analyzers The Agilent Biogas Analyzers Tuning the backflush time For the CP Molsieve 5A and the CP PoraPLOT U channel the backflush times must be tuned For tuning the Universal Gas Calibration Standard is recommended The purpose of tuning the CP Molsieve 5A is to get all methane on the column while all components such as moisture carbon dioxide ethane and higher hydrocarbons are backflushed The CP PoraPLOT U is tuned on the n Propane peak while all other hydrocarbons that elute after it are backflushed 1 Set the backflush t
5. 5 Other impurities HC s lt I ppm Nitrogen 0 1000 45 Methane Balance Ethane 0 049794 45 Ethylene 0 0497 5 Carbon Dioxide 0 0500 1 594 Carbon Monoxide 0 0995 45 Acetylene 0 049494 45 Propane 0 0501 45 Methyl Acetylene 0 050194 45 n Butane 0 050196 45 Traceability This standard was produced gravimetrically following Specialty Gas Work Instruction 15 Balances used are calibrated per POIS 2 140 traceable to NIST Concentrations were verified on an Agilent model 6890 gas chromatograph using a Wasson valve switch Variable Pressure Control and multiple packed capillary columns Standards Used Praxair UGS Primary Standard serial CC309710 Analytical GC Chromatogram Analytical columns Agilent MS 5A PLOT U PLOT TCD 1 0 ml loop He carricr at 35 ml min oven temp 90degC FID 0 1 mi loop He carrier at 30 ml min split ratio 25 1 Ramp 75degC for 6 min to 180dcgC for 3 75 min at 20degC min n FIDTA 6W101FSO1D n Butane o T Ext T a 14 AIB2 B 110177040 i EF VJ sas A N 4 VT Lr 2 TT i TE REA dm d Date of Release 15 February 2010 Analyst John God Expiration Date 15 February 2012 Senior Chemist The Agilent Biogas Analyzers Appendix 2 The Biogas Analyzer method Table 1 The Biogas Analyzer method Method Settings CP Molsieve 5A CP PoraPLOT U
6. Agilent 490 Micro GC Biogas Analyzers User Manual RES Agilent Technologies Notices Agilent Technologies Inc 2012 No part of this manual may be reproduced in any form or by any means including electronic storage and retrieval or transla tion into a foreign language without prior agreement and written consent from Agilent Technologies Inc as governed by United States and international copyright laws Manual Part Number 63582 90000 Edition Second edition February 2012 Printed in USA Agilent Technologies Inc 2850 Centerville Road Wilmington DE 19808 1610 USA Warranty The material contained in this docu ment is provided as is and is sub jectto being changed without notice in future editions Further to the max imum extent permitted by applicable law Agilent disclaims all warranties either express or implied with regard to this manual and any information contained herein including but not limited to the implied warranties of merchantability and fitness for a par ticular purpose Agilent shall not be liable for errors or for incidental or consequential damages in connection with the furnishing use or perfor mance of this document or of any information contained herein Should Agilent and the user have a separate written agreement with warranty terms covering the material in this document that conflict with these terms the warranty terms in the sep arate agreement shall control Techn
7. calls attention to an operating procedure practice or the like that if not correctly per formed or adhered to could result in personal injury or death Do not proceed beyond a WARNING notice until the indicated condi tions are fully understood and met Biogas Analyzer Agilent 490 Micro GC Biogas Analyzers User Manual The Agilent Biogas Analyzers Biogas is a type of biofuel produced by the biological breakdown of organic material in an anaerobic environment The anaerobic digestion or fermentation process of biodegradable materials such as manure sewage municipal waste green waste plant material or crops produces biogas Biogas is composed of methane carbon monoxide hydrogen carbon dioxide nitrogen hydrogen sulfide and oxygen When methane hydrogen and carbon monoxide are combusted or oxidized with oxygen energy is produced that can be used as fuel The Agilent 490 Micro GC Biogas Analyzer is a factory tuned analyzer specific for biogas analysis Two types of Biogas Analyzers are available Agilent 490 Micro GC Biogas Analyzer and the Agilent 490 Micro GC Biogas Analyzer Extended The choice of configuration depends on the type of biogas sample The Agilent 490 Micro GC Biogas Analyzer is used to analyze pure biogas including analysis of permanent gases hydrogen sulfide and hydrocarbons up to n propane This is a dual cabinet equipped with a CP Molsieve 5A channel and a CP PoraPLOT U channel with dual carrier
8. ce of the Biogas Analyzer For more details regarding the Universal Gas Calibration Standard see Appendix 1 The Universal Gas Calibration Standard is shipped with the Analyzer and will be used by the Agilent Customer Engineer at installation The factory tuned method final chromatogram Test Report and this Biogas Analyzer user manual are supplied with the Biogas Analyzer on the analyzer CD Use the Universal Gas Calibration Standard to perform reference checks on the Biogas Analyzer Load the method from the Analyzer CD if Openlab CDS EZChrom Edition is used or create a method using the settings from the method PDF file on the Analyzer CD For a quick start see Appendix 2 Connect and inject the Calibration Standard The Universal Gas Calibration Standard does not contain hydrogen sulfide neo pentane n pentane or i pentane For these components reference chromatograms are included in this manual Biogas Analyzers The Agilent Biogas Analyzers CP Molsieve channel The CP Molsieve 5A channel of the Biogas Analyzer analyzes permanent gases such as helium neon hydrogen oxygen nitrogen methane and carbon monoxide Figure 1 is a chromatogram of the Universal gas Calibration Standard analyzed on the CP Molsieve 5A channel mV 64 54 E RE 4 34 24 3 x c 5 E E D 3 es z C 2 gt e oe e A A 20 2 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 10 Seconds
9. ime at 0 second and analyze the Calibration standard The purpose of this is to identify the components in the Standard Change the backflush time Start with 10 seconds and make a run Now the following can be observed When the backflush time is set too early you will see the peak of interest partially or totally backflushed If the backflush time is set too late the unwanted components are not backflushed Adjust the backflush time until a huge difference is noticed in the peak of interest Then make smaller steps 0 1 seconds until the optimal backflush time is found Figure 6 shows a simple example of tuning the backflush time for the CP Molsieve 5A channel Tuning Backflush for CP Molsieve channel Differencein Area Area peak of interest 9 10 11 12 13 Backflush Time s Figure6 Effect of backflush time on the peak of interest Biogas Analyzers The Agilent Biogas Analyzers Appendix 1 Certificate of the Universal Gas Calibration Standard Biogas Analyzers Part No 5184 3541 Part No Kit 5184 3546 Agilent Technologies Xs innovating the HP Way ZAPRAXAIR Certificate of Analysis Universal Gas Calibration Standard Agilent Part No 5183 4800 5184 3541 Sample Lot No 021510U Concentrations tmole Helium 0 1000 45 n Hexane 0 0500 45 Neon 0 0496 45 n Heptane 0 0500 45 Hydrogen 0 0988 45 Water content H20 lt 5 ppm Oxygen 0 0500 4
10. ology Licenses The hardware and or software described in this document are furnished under a license and may be used or copied only in accordance with the terms of such license Restricted Rights Legend If software is for use in the performance of a U S Government prime contract or sub contract Software is delivered and licensed as Commercial computer soft ware as defined in DFAR 252 227 7014 June 1995 or as a commercial item as defined in FAR 2 101 a or as Restricted computer software as defined in FAR 52 227 19 June 1987 or any equivalent agency regulation or contract clause Use duplication or disclosure of Software is subject to Agilent Technologies standard commercial license terms and non DOD Departments and Agencies of the U S Government will receive no greater than Restricted Rights as defined in FAR 52 221 19 c 1 2 June 1987 U S Govern ment users will receive no greater than Limited Rights as defined in FAR 52 227 14 June 1987 or DFAR 252 227 7015 b 2 November 1995 as applicable in any technical data Safety Notices CAUTION A CAUTION notice denotes a hazard It calls attention to an oper ating procedure practice or the like that if not correctly performed or adhered to could result in damage to the product or loss of important data Do not proceed beyond a CAUTION notice until the indicated conditions are fully understood and met A WARNING notice denotes a hazard It
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Agilent Technologies 490 Micro GC Biogas Analyzers User Manual