Distinguishing primary and secondary reactions of cellulose pyrolysis
The objective of this study was to elucidate primary and secondary reactions of cellulose pyrolysis, which was accomplished by comparing results from a micro-pyrolyzer coupled to a GC–MS/FID system and a 100g/hr bench scale fluidized bed reactor system. The residence time of vapors in the micro-pyro...
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| Veröffentlicht in: | Bioresource technology 2011-04, Vol.102 (8), p.5265-5269 |
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| creator | Patwardhan, Pushkaraj R. Dalluge, Dustin L. Shanks, Brent H. Brown, Robert C. |
| description | The objective of this study was to elucidate primary and secondary reactions of cellulose pyrolysis, which was accomplished by comparing results from a micro-pyrolyzer coupled to a GC–MS/FID system and a 100g/hr bench scale fluidized bed reactor system. The residence time of vapors in the micro-pyrolyzer was only 15–20ms, which precluded significant secondary reactions. The fluidized bed reactor had a vapor residence time of 1–2s, which is similar to full-scale pyrolysis systems and is long enough for secondary reactions to occur. Products from the fluidized bed pyrolyzer reactor were analyzed using a combination of micro-GC, GC–MS/FID, LC–MS and IC techniques. Comparison between the products from the two reactor systems revealed that the oligomerization of leglucosan and decomposition of primary products such as 5-hydroxymethyl furfural, anhydro xylopyranose and 2-furaldehyde were the major secondary reactions occurring in the fluidized bed reactor. This study can be used to build more descriptive pyrolysis models that can predict yield of specific compounds. |
| doi_str_mv | 10.1016/j.biortech.2011.02.018 |
| format | Article |
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The residence time of vapors in the micro-pyrolyzer was only 15–20ms, which precluded significant secondary reactions. The fluidized bed reactor had a vapor residence time of 1–2s, which is similar to full-scale pyrolysis systems and is long enough for secondary reactions to occur. Products from the fluidized bed pyrolyzer reactor were analyzed using a combination of micro-GC, GC–MS/FID, LC–MS and IC techniques. Comparison between the products from the two reactor systems revealed that the oligomerization of leglucosan and decomposition of primary products such as 5-hydroxymethyl furfural, anhydro xylopyranose and 2-furaldehyde were the major secondary reactions occurring in the fluidized bed reactor. 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This study can be used to build more descriptive pyrolysis models that can predict yield of specific compounds.</description><subject>Biological and medical sciences</subject><subject>Carbohydrate oligomers</subject><subject>Cellulose</subject><subject>Cellulose - metabolism</subject><subject>Cellulose pyrolysis</subject><subject>Chromatography, Liquid</subject><subject>Construction</subject><subject>Construction specifications</subject><subject>Fluidized beds</subject><subject>Fundamental and applied biological sciences. Psychology</subject><subject>Furfural</subject><subject>Gas Chromatography-Mass Spectrometry</subject><subject>Hydrolysis</subject><subject>Integrated circuits</subject><subject>Mathematical models</subject><subject>Primary pyrolysis reactions</subject><subject>Pyrolysis</subject><subject>Pyrolysis mechanism</subject><subject>Reactors</subject><subject>Secondary pyrolysis reactions</subject><issn>0960-8524</issn><issn>1873-2976</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2011</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNqFkUuP0zAQgC0EYkvhL6xyQXBJGNuJ7dxAy_KQVuICZ8sZO6yrNC6eBKn_Hlftwo09jUbzzUPzMXbNoeHA1btdM8SUl4D3jQDOGxANcPOEbbjRsha9Vk_ZBnoFtelEe8VeEO0AQHItnrMrwWXXaqM27PZjpCXOP9dI9yVUhxz3Lh8rN_uKAqbZn7IcHC4xzVSlscIwTeuUKFSHY07TkSK9ZM9GN1F4dYlb9uPT7febL_Xdt89fbz7c1dgJs9RSeykAhUDkg-ncoNyIrkUnvfOmN8b3RptRu44HPpQaGqPQAyivtByN3LI357mHnH6tgRa7j3S6x80hrWSNEtq00vDHyU5zCQpEId_-l-Rag2z7ru0Kqs4o5kSUw2gv77Ic7EmL3dkHLfakxYKwRUtpvL7sWId98H_bHjwU4PUFcIRuGrObMdI_TvZai2J2y96fuVC-_DuGbAljmDH4mAMu1qf42C1_ADY6r4A</recordid><startdate>20110401</startdate><enddate>20110401</enddate><creator>Patwardhan, Pushkaraj R.</creator><creator>Dalluge, Dustin L.</creator><creator>Shanks, Brent H.</creator><creator>Brown, Robert C.</creator><general>Elsevier Ltd</general><general>Elsevier</general><scope>IQODW</scope><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7SU</scope><scope>7TB</scope><scope>8FD</scope><scope>C1K</scope><scope>FR3</scope><scope>KR7</scope><scope>7X8</scope><scope>7QO</scope><scope>7ST</scope><scope>P64</scope><scope>SOI</scope></search><sort><creationdate>20110401</creationdate><title>Distinguishing primary and secondary reactions of cellulose pyrolysis</title><author>Patwardhan, Pushkaraj R. ; Dalluge, Dustin L. ; Shanks, Brent H. ; Brown, Robert C.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c528t-37d320c22cc1b85ab6afca4ca3dad8988d9878f7a51e1bafcc886cd006d673f83</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2011</creationdate><topic>Biological and medical sciences</topic><topic>Carbohydrate oligomers</topic><topic>Cellulose</topic><topic>Cellulose - metabolism</topic><topic>Cellulose pyrolysis</topic><topic>Chromatography, Liquid</topic><topic>Construction</topic><topic>Construction specifications</topic><topic>Fluidized beds</topic><topic>Fundamental and applied biological sciences. 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| subjects | Biological and medical sciences Carbohydrate oligomers Cellulose Cellulose - metabolism Cellulose pyrolysis Chromatography, Liquid Construction Construction specifications Fluidized beds Fundamental and applied biological sciences. Psychology Furfural Gas Chromatography-Mass Spectrometry Hydrolysis Integrated circuits Mathematical models Primary pyrolysis reactions Pyrolysis Pyrolysis mechanism Reactors Secondary pyrolysis reactions |
| title | Distinguishing primary and secondary reactions of cellulose pyrolysis |
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