Reed as a gasification fuel: a comparison with woody fuels
Reed and coniferous wood can be used for energy production via thermochemical conversion, for instance by gasification. The rate-determining step of the gasification process is the reaction between the char and the gaseous environment in the gasifier, whose rate depends on variables such as pressure...
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| Format: | Article |
| Language: | English |
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International Mire Conservation Group and International Peatland Society
2013-10-01
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| Series: | Mires and Peat |
| Subjects: | |
| Online Access: | http://mires-and-peat.net/media/map13/map_13_04.pdf |
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| author | S. Link Ü. Kask A. Paist A. Siirde S. Arvelakis M. Hupa P. Yrjas I. Külaots |
| author_facet | S. Link Ü. Kask A. Paist A. Siirde S. Arvelakis M. Hupa P. Yrjas I. Külaots |
| author_sort | S. Link |
| collection | DOAJ |
| description | Reed and coniferous wood can be used for energy production via thermochemical conversion, for instance by gasification. The rate-determining step of the gasification process is the reaction between the char and the gaseous environment in the gasifier, whose rate depends on variables such as pressure, temperature, particle size, mineral matter content, porosity, etc. It is known that reactivity can be improved by increasing the temperature, but on the other hand the temperature achieved in the reactor is limited due to the ash fusion characteristics. Usually, the availability of reed as a fuel is locally modest and, therefore, it must be blended with other fuels such as wood. Blending of fuels brings together several problems relating to ash behaviour, i.e. ash fusion issues. Because there is no correlation between the ash fusion characteristics of biomass blends and their individual components, it is essential to carry out prior laboratory-scale ash fusion tests on the blends. This study compares the reactivity of reed and coniferous wood, and the ash fusion characteristics of blends of reed and coniferous wood ashes. When compared with Douglas fir and reed chars, pine pellets have the highest reactivity. Reed char exhibits the lowest reactivity and, therefore, it is advantageous to gasify reed alone at higher gasification temperatures because the ash fusion temperatures of reed are higher than those of woody fuels. The ash produced by reed and wood blends can melt at lower temperatures than ash from both reed and wood gasified separately. Due to this circumstance the gasification temperature should be chosen carefully when gasification of blends is carried out. |
| first_indexed | 2024-03-12T19:52:15Z |
| format | Article |
| id | doaj.art-a6cc1cb8fb3a467fa513caf486b3efa9 |
| institution | Directory Open Access Journal |
| issn | 1819-754X |
| language | English |
| last_indexed | 2024-03-12T19:52:15Z |
| publishDate | 2013-10-01 |
| publisher | International Mire Conservation Group and International Peatland Society |
| record_format | Article |
| series | Mires and Peat |
| spelling | doaj.art-a6cc1cb8fb3a467fa513caf486b3efa92023-08-02T03:07:10ZengInternational Mire Conservation Group and International Peatland SocietyMires and Peat1819-754X2013-10-011304112Reed as a gasification fuel: a comparison with woody fuelsS. Link0Ü. Kask1A. Paist2A. Siirde3S. Arvelakis4M. Hupa5P. Yrjas6I. Külaots7Tallinn University of Technology, EstoniaTallinn University of Technology, EstoniaTallinn University of Technology, EstoniaTallinn University of Technology, EstoniaNational Technical University of Athens, GreeceÅbo Akademi Process Chemistry Centre, FinlandÅbo Akademi Process Chemistry Centre, FinlandBrown University, Providence, RI, USAReed and coniferous wood can be used for energy production via thermochemical conversion, for instance by gasification. The rate-determining step of the gasification process is the reaction between the char and the gaseous environment in the gasifier, whose rate depends on variables such as pressure, temperature, particle size, mineral matter content, porosity, etc. It is known that reactivity can be improved by increasing the temperature, but on the other hand the temperature achieved in the reactor is limited due to the ash fusion characteristics. Usually, the availability of reed as a fuel is locally modest and, therefore, it must be blended with other fuels such as wood. Blending of fuels brings together several problems relating to ash behaviour, i.e. ash fusion issues. Because there is no correlation between the ash fusion characteristics of biomass blends and their individual components, it is essential to carry out prior laboratory-scale ash fusion tests on the blends. This study compares the reactivity of reed and coniferous wood, and the ash fusion characteristics of blends of reed and coniferous wood ashes. When compared with Douglas fir and reed chars, pine pellets have the highest reactivity. Reed char exhibits the lowest reactivity and, therefore, it is advantageous to gasify reed alone at higher gasification temperatures because the ash fusion temperatures of reed are higher than those of woody fuels. The ash produced by reed and wood blends can melt at lower temperatures than ash from both reed and wood gasified separately. Due to this circumstance the gasification temperature should be chosen carefully when gasification of blends is carried out.http://mires-and-peat.net/media/map13/map_13_04.pdfash fusionbiomass blendsco-gasificationreactivity |
| spellingShingle | S. Link Ü. Kask A. Paist A. Siirde S. Arvelakis M. Hupa P. Yrjas I. Külaots Reed as a gasification fuel: a comparison with woody fuels Mires and Peat ash fusion biomass blends co-gasification reactivity |
| title | Reed as a gasification fuel: a comparison with woody fuels |
| title_full | Reed as a gasification fuel: a comparison with woody fuels |
| title_fullStr | Reed as a gasification fuel: a comparison with woody fuels |
| title_full_unstemmed | Reed as a gasification fuel: a comparison with woody fuels |
| title_short | Reed as a gasification fuel: a comparison with woody fuels |
| title_sort | reed as a gasification fuel a comparison with woody fuels |
| topic | ash fusion biomass blends co-gasification reactivity |
| url | http://mires-and-peat.net/media/map13/map_13_04.pdf |
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