Ex-situ catalytic fast pyrolysis of biomass over HZSM-5 in a two-stage fluidized-bed/fixed-bed combination reactor.
In: Bioresource technology, Jg. 243 (2017-11-01), S. 1133-1140
academicJournal
Zugriff:
Ex-situ and in-situ catalytic fast pyrolysis (CFP) of biomass over HZSM-5 were compared in a two-stage fluidized-bed/fixed-bed combination reactor. Ex-situ CFP gave a similar carbon yield of aromatics+olefins (∼20%) with in-situ CFP but produced much more olefins (10.3% vs. 5.8%) and less char+coke (42.7% vs. 48.4%). The effects of weight hourly space velocity (WHSV), carrier gas flow rate, pyrolysis temperature and catalysis temperature on product distribution in ex-situ CFP were further studied. The maximum carbon yield of aromatics+olefins (21.7%) was obtained at pyrolysis temperature of 550°C and catalysis temperature of 600°C with the highest carrier gas flow rate (1.2L/min) and WHSV of 1.33h -1 . Obviously less coke was generated at higher pyrolysis temperature. When catalysis temperature increased to 700°C, ethylene and benzene carbon selectivities boosted to 79.4% and 60.5%, respectively.
(Copyright © 2017 Elsevier Ltd. All rights reserved.)
| Titel: |
Ex-situ catalytic fast pyrolysis of biomass over HZSM-5 in a two-stage fluidized-bed/fixed-bed combination reactor.
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| Autor/in / Beteiligte Person: | Hu, C ; Xiao, R ; Zhang, H |
| Zeitschrift: | Bioresource technology, Jg. 243 (2017-11-01), S. 1133-1140 |
| Veröffentlichung: | Barking, Essex, England : New York, N.Y. : Elsevier Applied Science ; Elsevier Science Pub. Co., 1991-, 2017 |
| Medientyp: | academicJournal |
| ISSN: | 1873-2976 (electronic) |
| DOI: | 10.1016/j.biortech.2017.07.011 |
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