98%
921
2 minutes
20
Recent studies show that fast hydropyrolysis (i.e., pyrolysis under hydrogen atmosphere operating at a rapid heating rate) is a promising technology for the conversion of biomass into liquid fuels (e.g., bio-oil and C hydrocarbons). This pyrolysis approach is reported to be more effective than conventional fast pyrolysis in producing aromatic hydrocarbons and also lowering the oxygen content of the bio-oil obtained compared to hydrodeoxygenation (a common bio-oil upgrading method). Based on current literature, various non-catalytic and catalytic fast hydropyrolysis processes are reviewed and discussed. Efforts to combine fast hydropyrolysis and hydrotreatment process are also highlighted. Points to be considered for future research into fast hydropyrolysis and pending challenges are also discussed.
Download full-text PDF |
Source |
---|---|
http://dx.doi.org/10.1016/j.biortech.2021.126067 | DOI Listing |
Molecules
December 2022
Department of Chemical and Polymer Engineering, University of Engineering and Technology, Faisalabad Campus, Lahore 38000, Pakistan.
Numerous attempts have been made to produce new materials and technology for renewable energy and environmental improvements in response to global sustainable solutions stemming from fast industrial expansion and population growth. Zeolites are a group of crystalline materials having molecularly ordered micropore arrangements. Over the past few years, progress in zeolites has been observed in transforming biomass and waste into fuels.
View Article and Find Full Text PDFBioresour Technol
June 2022
School of Environmental Engineering, University of Seoul, Seoul 02504, Republic of Korea. Electronic address:
Catalytic fast pyrolysis of low sulfonated Kraft lignin was performed under different atmospheric environments such as N, CH and the gas derived from CH decomposition (CH-D). The use of Zn- or Mo-loaded HZSM-5 as catalyst led to a higher pyrolytic oil yield compared to parent HZSM-5 in CH and CH-D atmospheres. The yields of benzene, toluene, and xylenes were increased by the synergistic effects from metal loading, higher H/C ratio, higher acidity, and CH activation.
View Article and Find Full Text PDFBioresour Technol
December 2021
School of Environmental Engineering, University of Seoul, Seoul 02504, Republic of Korea. Electronic address:
Recent studies show that fast hydropyrolysis (i.e., pyrolysis under hydrogen atmosphere operating at a rapid heating rate) is a promising technology for the conversion of biomass into liquid fuels (e.
View Article and Find Full Text PDFBioresour Technol
January 2021
State Key Laboratory of Heavy Oil Processing, China University of Petroleum (East China), Qingdao, Shandong 266580, China; Shandong Engineering and Technology Research Center of High Carbon Energy Low Carbonization, Qingdao, Shandong 266590, China.
Fast partial hydropyrolysis of biomass was carried out at the level with hydrogen concentration of 0% to 30% and temperatures ranging from 700 to 900 °C by using a downer pyrolyzer. A theoretical parametric effect on yields and properties of the hydropyrolysis products were clarified. It was found that the volatile matter evolved during pyrolysis was substantially increased in the presence of hydrogen.
View Article and Find Full Text PDFBioresour Technol
September 2015
Imperial College London, Department of Chemical Engineering, Exhibition Road, South Kensington, London SW7 2AZ, UK. Electronic address:
This investigation demonstrates the utility of a novel laboratory scale continuous plug flow reactor for fast Hydrothermal Liquefaction (HTL) of microalgae in a quartz lined chamber. Reactions were carried out between 300 and 380 °C and residence times of 0.5-4 min.
View Article and Find Full Text PDF