Steps to understand the role played by the main operating conditions in the oxidative steam reforming of biomass fast pyrolysis volatiles
Biomass pyrolysis and in-line catalytic oxidative steam reforming of the volatiles (P-OSR) has been analyzed in a two-step reaction system made up of a conical spouted bed reactor (CSBR) and a fluidized bed reactor (FBR). A novel O2 multi-point injection system has been designed in order to ensure s...
| Authors: | ; ; ; ; ; ; |
|---|---|
| Format: | Article |
| Publication date: | 2023 |
| Country: | España |
| Institution: | Universidad del País Vasco |
| Repository: | Addi. Archivo Digital para la Docencia y la Investigación |
| OAI Identifier: | oai:addi.ehu.eus:10810/71791 |
| Online Access: | http://hdl.handle.net/10810/71791 |
| Access Level: | Open access |
| Keyword: | Hydrogen pyrolysis oxidative steam reforming biomass autothermal |
| _version_ | 1878736189263970304 |
|---|---|
| author | García González, Irati |
| author2 | Santamaría Moreno, Laura López Zabalbeitia, Gartzen Bilbao Elorriaga, Javier Olazar Aurrecoechea, Martin Amutio Izaguirre, Maider Artetxe Uria, Maite |
| author2_role | author author author author author author |
| author_browse | Amutio Izaguirre, Maider Artetxe Uria, Maite Bilbao Elorriaga, Javier García González, Irati López Zabalbeitia, Gartzen Olazar Aurrecoechea, Martin Santamaría Moreno, Laura |
| author_facet | García González, Irati Santamaría Moreno, Laura López Zabalbeitia, Gartzen Bilbao Elorriaga, Javier Olazar Aurrecoechea, Martin Amutio Izaguirre, Maider Artetxe Uria, Maite |
| author_role | author |
| collection | Addi. Archivo Digital para la Docencia y la Investigación |
| description | Biomass pyrolysis and in-line catalytic oxidative steam reforming of the volatiles (P-OSR) has been analyzed in a two-step reaction system made up of a conical spouted bed reactor (CSBR) and a fluidized bed reactor (FBR). A novel O2 multi-point injection system has been designed in order to ensure suitable O2 distribution in the FBR, and hence avoid the formation of hot spots that may lead to irreversible catalyst deactivation by metal sintering. Optimization of the main process parameters has been approached in order to maximize H2 production and overcome the high energy requirements of the endothermic reforming reaction. The study has been conducted in the following ranges of the operating conditions: Reforming temperature, 550–700 °C; space time, 5–20 gcat min gvolatiles−1; steam/biomass (S/B) ratio, 2.5–5; and equivalence ratio (ER) from 0 to 0.19. Moderate reforming temperatures (600–650 °C), a S/B value of 3 and a space time of 15 gcat min gvolatiles−1 are the optimum conditions for the process. Furthermore, when low space time values are used, O2 feeding rates into the reforming step of up to an ER value of 0.12 (corresponding to autothermal operation (ATR)) revealed a synergistic effect promoting reforming reactions. Thus, an improvement in H2 production from 6.81 wt% to 8.26 wt% was observed by changing ER from 0 to 0.12, which means H2 production increases by 21.4% compared to the conventional pyrolysis-reforming (P-SR) process. Therefore, the promising results obtained in this study prove the suitability of the continuous P-OSR strategy for H2 production from biomass and involve a step forward towards the scaling up of the process. |
| eu_rights_str_mv | openAccess |
| format | article |
| id | ES_8a9bee2faf878494a56e95db52c53b7e |
| institution | Universidad del País Vasco |
| instname_str | Universidad del País Vasco |
| network_acronym_str | ES |
| network_name_str | España |
| oai_identifier_str | oai:addi.ehu.eus:10810/71791 |
| publishDate | 2023 |
| publishDateSort | 2023 |
| publisher | Elsevier |
| publisherStr | Elsevier |
| reponame_str | Addi. Archivo Digital para la Docencia y la Investigación |
| spelling | Steps to understand the role played by the main operating conditions in the oxidative steam reforming of biomass fast pyrolysis volatiles García González, Irati Santamaría Moreno, Laura López Zabalbeitia, Gartzen Bilbao Elorriaga, Javier Olazar Aurrecoechea, Martin Amutio Izaguirre, Maider Artetxe Uria, Maite Hydrogen pyrolysis oxidative steam reforming biomass autothermal Biomass pyrolysis and in-line catalytic oxidative steam reforming of the volatiles (P-OSR) has been analyzed in a two-step reaction system made up of a conical spouted bed reactor (CSBR) and a fluidized bed reactor (FBR). A novel O2 multi-point injection system has been designed in order to ensure suitable O2 distribution in the FBR, and hence avoid the formation of hot spots that may lead to irreversible catalyst deactivation by metal sintering. Optimization of the main process parameters has been approached in order to maximize H2 production and overcome the high energy requirements of the endothermic reforming reaction. The study has been conducted in the following ranges of the operating conditions: Reforming temperature, 550–700 °C; space time, 5–20 gcat min gvolatiles−1; steam/biomass (S/B) ratio, 2.5–5; and equivalence ratio (ER) from 0 to 0.19. Moderate reforming temperatures (600–650 °C), a S/B value of 3 and a space time of 15 gcat min gvolatiles−1 are the optimum conditions for the process. Furthermore, when low space time values are used, O2 feeding rates into the reforming step of up to an ER value of 0.12 (corresponding to autothermal operation (ATR)) revealed a synergistic effect promoting reforming reactions. Thus, an improvement in H2 production from 6.81 wt% to 8.26 wt% was observed by changing ER from 0 to 0.12, which means H2 production increases by 21.4% compared to the conventional pyrolysis-reforming (P-SR) process. Therefore, the promising results obtained in this study prove the suitability of the continuous P-OSR strategy for H2 production from biomass and involve a step forward towards the scaling up of the process. This work was carried out with the financial support of the grant PID2022-140704OB-I00 funded by MCIU/AEI/10.13039/501100011033 and “ERDF, a way of making Europe”, the grants TED2021-132056B-I00 and PLEC2021-008062 funded by MCIN/AEI/10.13039/501100011033 and “European Union NextGenerationEU/PRTR”, the grant PID2022- 139454OB-I00 funded by MCIN/AEI/10.13039/501100011033 and “ERDF, a way of making Europe” and the grants IT1645-22 and KK- 2023/00060 funded by the Basque Government. Moreover, this project has received funding from the European Union’s Horizon 2020 research and innovation programme under the Marie Sklodowska-Curie grant agreement No. 823745. Elsevier http://hdl.handle.net/10810/71791 |
| spellingShingle | Steps to understand the role played by the main operating conditions in the oxidative steam reforming of biomass fast pyrolysis volatiles García González, Irati Hydrogen pyrolysis oxidative steam reforming biomass autothermal |
| title | Steps to understand the role played by the main operating conditions in the oxidative steam reforming of biomass fast pyrolysis volatiles |
| title_full | Steps to understand the role played by the main operating conditions in the oxidative steam reforming of biomass fast pyrolysis volatiles |
| title_fullStr | Steps to understand the role played by the main operating conditions in the oxidative steam reforming of biomass fast pyrolysis volatiles |
| title_full_unstemmed | Steps to understand the role played by the main operating conditions in the oxidative steam reforming of biomass fast pyrolysis volatiles |
| title_short | Steps to understand the role played by the main operating conditions in the oxidative steam reforming of biomass fast pyrolysis volatiles |
| title_sort | Steps to understand the role played by the main operating conditions in the oxidative steam reforming of biomass fast pyrolysis volatiles |
| topic | Hydrogen pyrolysis oxidative steam reforming biomass autothermal |
| topic_facet | Hydrogen pyrolysis oxidative steam reforming biomass autothermal |
| url | http://hdl.handle.net/10810/71791 |