Continuous Hydrothermal Liquefaction of Biomass: A Critical Review
Hydrothermal liquefaction (HTL) of biomass is emerging as an effective technology to efficiently valorize different types of (wet) biomass feedstocks, ranging from lignocellulosics to algae and organic wastes. Significant research into HTL has been conducted in batch systems, which has provided a fu...
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| Format: | Article |
| Language: | English |
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MDPI AG
2018-11-01
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| Series: | Energies |
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| Online Access: | https://www.mdpi.com/1996-1073/11/11/3165 |
| _version_ | 1828136313228886016 |
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| author | Daniele Castello Thomas Helmer Pedersen Lasse Aistrup Rosendahl |
| author_facet | Daniele Castello Thomas Helmer Pedersen Lasse Aistrup Rosendahl |
| author_sort | Daniele Castello |
| collection | DOAJ |
| description | Hydrothermal liquefaction (HTL) of biomass is emerging as an effective technology to efficiently valorize different types of (wet) biomass feedstocks, ranging from lignocellulosics to algae and organic wastes. Significant research into HTL has been conducted in batch systems, which has provided a fundamental understanding of the different process conditions and the behavior of different biomass. The next step towards continuous plants, which are prerequisites for an industrial implementation of the process, has been significantly less explored. In order to facilitate a more focused future development, this review—based on the sources available in the open literature—intends to present the state of the art in the field of continuous HTL as well as to suggest means of interpretation of data from such plants. This contributes to a more holistic understanding of causes and effects, aiding next generation designs as well as pinpointing research focus. Additionally, the documented experiences in upgrading by catalytic hydrotreating are reported. The study reveals some interesting features in terms of energy densification versus the yield of different classes of feedstocks, indicating that some global limitations exist irrespective of processing implementations. Finally, techno-economic considerations, observations and remarks for future studies are presented. |
| first_indexed | 2024-04-11T18:02:10Z |
| format | Article |
| id | doaj.art-91626ecce1c943c19ab6ef09446ad3c0 |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-04-11T18:02:10Z |
| publishDate | 2018-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-91626ecce1c943c19ab6ef09446ad3c02022-12-22T04:10:27ZengMDPI AGEnergies1996-10732018-11-011111316510.3390/en11113165en11113165Continuous Hydrothermal Liquefaction of Biomass: A Critical ReviewDaniele Castello0Thomas Helmer Pedersen1Lasse Aistrup Rosendahl2Department of Energy Technology, Aalborg University, Pontoppidanstræde 111, 9220 Aalborg Øst, DenmarkDepartment of Energy Technology, Aalborg University, Pontoppidanstræde 111, 9220 Aalborg Øst, DenmarkDepartment of Energy Technology, Aalborg University, Pontoppidanstræde 111, 9220 Aalborg Øst, DenmarkHydrothermal liquefaction (HTL) of biomass is emerging as an effective technology to efficiently valorize different types of (wet) biomass feedstocks, ranging from lignocellulosics to algae and organic wastes. Significant research into HTL has been conducted in batch systems, which has provided a fundamental understanding of the different process conditions and the behavior of different biomass. The next step towards continuous plants, which are prerequisites for an industrial implementation of the process, has been significantly less explored. In order to facilitate a more focused future development, this review—based on the sources available in the open literature—intends to present the state of the art in the field of continuous HTL as well as to suggest means of interpretation of data from such plants. This contributes to a more holistic understanding of causes and effects, aiding next generation designs as well as pinpointing research focus. Additionally, the documented experiences in upgrading by catalytic hydrotreating are reported. The study reveals some interesting features in terms of energy densification versus the yield of different classes of feedstocks, indicating that some global limitations exist irrespective of processing implementations. Finally, techno-economic considerations, observations and remarks for future studies are presented.https://www.mdpi.com/1996-1073/11/11/3165HTLcontinuous processesbiocrudeupgrading |
| spellingShingle | Daniele Castello Thomas Helmer Pedersen Lasse Aistrup Rosendahl Continuous Hydrothermal Liquefaction of Biomass: A Critical Review Energies HTL continuous processes biocrude upgrading |
| title | Continuous Hydrothermal Liquefaction of Biomass: A Critical Review |
| title_full | Continuous Hydrothermal Liquefaction of Biomass: A Critical Review |
| title_fullStr | Continuous Hydrothermal Liquefaction of Biomass: A Critical Review |
| title_full_unstemmed | Continuous Hydrothermal Liquefaction of Biomass: A Critical Review |
| title_short | Continuous Hydrothermal Liquefaction of Biomass: A Critical Review |
| title_sort | continuous hydrothermal liquefaction of biomass a critical review |
| topic | HTL continuous processes biocrude upgrading |
| url | https://www.mdpi.com/1996-1073/11/11/3165 |
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