A Review of Hot Gas Cleaning Techniques for Hydrogen Chloride Removal from Biomass-Derived Syngas

Vera Marcantonio, Michael Müller and Enrico Bocci
Additional contact information
Vera Marcantonio: Department of Engineering Science, Marconi University, Via Plinio 44, 00193 Rome, Italy
Michael Müller: Forschungszentrum Jülich GmbH, Institute of Energy and Climate Research, IEK-2, Leo-Brandt-Strasse, D-52425 Jülich, Germany
Enrico Bocci: Department of Engineering Science, Marconi University, Via Plinio 44, 00193 Rome, Italy

Energies, 2021, vol. 14, issue 20, 1-15

Abstract: Considering the pressing challenges of supply security and climate change, advanced processes to produce electricity and biofuels from biomass have to be developed. Biomass gasification is a very promising technology, but there is a lack of comprehensive reviews, specifically on the technologies for hydrogen chloride hot gas cleanup, which are necessary in order to work at the same temperature and respect the limits of advanced downstream components. In this review, the Cl content of the main biomasses in Europe is given, and data on syngas content and the tolerance of downstream equipment are highlighted. Hot gas cleaning technologies, which have the advantage of improved thermal efficiency are reviewed, analyzing the thermodynamic and primary and secondary methods. This review identifies NaAlO 2 and Na 2 CO 3 within 450–550 °C as the most effective sorbents, which are able to reduce the concentration of HCl below 1 ppm. Nevertheless, H 2 S cannot be simultaneously removed and has to be removed first, because it reduces the HCl adsorption sorbent capacity.

Keywords: hydrogen chloride; hot gas cleaning; biomass gasification; syngas; dechlorination; hydrogen sulfide (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2021
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (5)

Downloads: (external link)
https://www.mdpi.com/1996-1073/14/20/6519/pdf (application/pdf)
https://www.mdpi.com/1996-1073/14/20/6519/ (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:gam:jeners:v:14:y:2021:i:20:p:6519-:d:653742

Access Statistics for this article

Energies is currently edited by Ms. Agatha Cao

More articles in Energies from MDPI
Bibliographic data for series maintained by MDPI Indexing Manager ().