Article
Agricultural Engineering
Yuan Liu, Shiliang Wu, Huiyan Zhang, Rui Xiao
Summary: Combining torrefaction with fast pyrolysis is a feasible method for producing long-chain ether precursors. Structural characterization results showed that torrefaction led to a decrease in crystallinity index and the elimination of hydroxyls, ether bonds, etc., but an increase in carbonyls. The production of small-molecule gases was reduced after torrefaction, while the yield of targeted compounds in bio-oil significantly improved, with 240CS providing the highest carbon yield.
BIORESOURCE TECHNOLOGY
(2021)
Article
Energy & Fuels
Wenran Gao, Mingming Zhang, Hongwei Wu
Summary: This study investigates bed agglomeration during fast pyrolysis of bio-oil derived fuels in a fluidized-bed reactor and reveals the positive effects of methanol and biochar in reducing tar formation. The results show a positive linear correlation between agglomeration yield and tar formation, indicating the significant impact of tar formation on bed agglomeration of bio-oil derived fuels.
Article
Green & Sustainable Science & Technology
Magnus Zingler Stummann, Martin Hoj, Jostein Gabrielsen, Lasse Rongaard Clausen, Peter Arendt Jensen, Anker Degn Jensen
Summary: Catalytic hydropyrolysis has shown promise as a method for producing liquid hydrocarbon fuels from lignocellulosic biomass, but there is still limited research in this field and the process remains not well-understood. Through analysis of literature and laboratory research, a mechanistic model for catalytic hydropyrolysis of biomass has been proposed, along with discussions on the influence of hydrogenation catalyst on product distribution and catalyst deactivation. Comparisons with other pyrolysis technologies have been made, highlighting and discussing the challenges for catalytic hydropyrolysis.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2021)
Article
Chemistry, Multidisciplinary
Quoc Khanh Tran, Manh Linh Le, Hoang Vu Ly, Hee Chul Woo, Jinsoo Kim, Seung-Soo Kim
Summary: The kinetic parameters of biomass pyrolysis from Pitch Pine were studied, showing that the optimal temperature for bio-oil yield was 500 degrees Celsius with a maximum of 65.5%. The bio-oil had a high heating value ranging from 22MJ/kg to 24MJ/kg, and contained useful chemicals such as levoglucosan, furfural, and guaiacol. The pyrolyzed oil from Pitch Pine trees showed promise as a biofuel candidate due to the production of a significant amount of C-5-C-11 (gasoline fraction).
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
(2021)
Article
Environmental Sciences
Hoang Vu Ly, Quoc Khanh Tran, Seung-Soo Kim, Jinsoo Kim, Suk Soon Choi, Changho Oh
Summary: Biofuel production via pyrolysis is an effective way to utilize food waste, improving the quality and liquid yield of bio-oil. The use of catalysts can further enhance the heating value and composition of the bio-oils.
ENVIRONMENTAL POLLUTION
(2021)
Article
Energy & Fuels
David C. Dayton, Ofei D. Mante, Joseph Weiner, Christos Komnaris, Sylvain Verdier, Jostein Gabrielsen
Summary: This study investigates the hydrotreating of biocrude produced by reactive catalytic fast pyrolysis (RCFP), which can be upgraded or coprocessed to produce gasoline- and diesel-range hydrocarbons. Results show that catalyst deactivation occurs during hydrotreating, but at a slower rate during coprocessing tests.
Article
Energy & Fuels
Yunlei Cui, Yaning Zhang, Longfei Cui, Qingang Xiong, Ehab Mostafa
Summary: Conversion of plastic wastes into value added fuels is a good way for sustainable development. In this study, microwave-assisted fluidized bed reactor pyrolysis of polypropylene plastic for pyrolysis gas production was experimentally investigated. The effects of pyrolysis temperature, fluidizing velocity, and microwave power on the pyrolysis gas products were analyzed. An optimal pyrolysis gas yield of 76.1 wt% was obtained when the pyrolysis temperature was 900°C, fluidizing velocity was 2.36 x 10-3 m/s and microwave power was 800 W, and the pyrolysis gas was rich in C3H6, CH4, and C3H8 with a higher heating value of 51.8 MJ/m3. The produced gas has great potentials in applications, such as fuel cells.
Article
Energy & Fuels
Antonio Santos, Yuri Nariyoshi, Leonardo Arrieche, Marcelo Bacelos
Summary: This study assesses the particle concentration uniformity in a fluidized bed composed of LDPE/Al and sand mixtures. The results show that only the dC/dS and V/Vmf ratio affects the bed mixing index (IM).
Article
Energy & Fuels
Qian Xia, Bochao Yan, Huawen Wang, Jian Xu, Suping Zhang, Guojun Zhou, Anfu Hu, Jian Jiang, Shiqiang Xu, Jun Wang, Wenbing Chen
Summary: The study focused on converting tobacco waste into high value-added products through fast pyrolysis, with TF, TS, and MT used as raw materials. The bio-oil yield was found to be TS > MT > TF under the same pyrolysis temperature of 350 degrees C. Different separation methods for bio-oils resulted in different types of aroma compounds, with some compounds requiring specific separation methods.
BIOMASS CONVERSION AND BIOREFINERY
(2021)
Article
Engineering, Chemical
Maurizio Troiano, Valeria Ianzito, Roberto Solimene, Elvis Tinashe Ganda, Piero Salatino
Summary: A one-dimensional model of a fluidized bed pyrolytic converter for biomass is presented in this paper. The fate of biomass and resulting char is modelled by considering elutriation, attrition, and bed drain/regeneration. The study focuses on the role of heterogeneous volatile-char secondary reactions and their importance in controlling char loading in the bed. The results highlight the significance of these reactions in reactor performance and provide guidelines for optimal design and control of fluidized bed pyrolyzers.
CANADIAN JOURNAL OF CHEMICAL ENGINEERING
(2023)
Article
Engineering, Chemical
Xiaogang Shi, Huanzhi Liu, Xingrui Zhang, Xingying Lan, Jinsen Gao
Summary: In this study, the fast pyrolysis characteristics of the three main components of biomass (cellulose, hemicellulose, and lignin) were investigated using a numerical simulation method in a fluidized bed reactor. The results showed that hardwood had a 3% higher yield of bio-oil or tar and a 6% lower yield of biochar compared to softwood. Simulation results indicated that hardwood with high hemicellulose content and low lignin content was an ideal feedstock for bio-oil production by fast pyrolysis.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2023)
Review
Green & Sustainable Science & Technology
Xuesong Yang, Shuai Wang, Yurong He
Summary: This paper reviews the development and challenges of catalytic reforming technology for hydrogen production using a membrane-assisted fluidized bed, summarizes influencing factors of membrane separation and features of a fluidized bed membrane reactor, and introduces the application of coupling technologies.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2022)
Article
Chemistry, Multidisciplinary
Yury Dubinin, Nikolay A. Yazykov, Sergei Reshetnikov, Vadim A. Yakovlev
Summary: This study focuses on the combustion of sulfur oils in a fluidized bed of catalyst, aiming to reduce SO2 emissions by using a non-isothermal temperature profile and CaCO3 or CaO for absorbing sulfur oxides. The technology allows for conducting the process at 400-700 degrees C, significantly reducing toxic compound concentrations, and maintaining high oxidation degrees of oils.
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
(2021)
Article
Chemistry, Applied
Nana Wang, Hui Si, Weiming Yi, Yongjun Li, Yuchun Zhang
Summary: A mobile fast pyrolysis system was designed and built, with experiments conducted to examine the effects of temperature on the pyrolysis of larch sawdust. The highest bio-oil yield was observed at 500 degrees C, with varying chemical components and non-condensable gas composition. The results provide valuable reference for the industrial application of mobile fast pyrolysis technology.
FUEL PROCESSING TECHNOLOGY
(2021)
Article
Engineering, Chemical
Sanaa Hafeez, Maarten Van Haute, Achilleas Constantinou, Sultan M. Al-Salem
Summary: A comprehensive process simulation was developed to study the pyrolysis of LLDPE in an FBR, with the focus on the pyrolytic oil and wax yields. The simulation showed a decrease in oil yield with increasing temperature, due to the vibration of the polymer matrix and absorbed thermal energy. A higher gas yield and negligible wax formation at 700 degrees C were observed, which is beneficial for controlling plastic waste. The simulation was validated with experimental data, showing less than 10% discrepancy.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2023)
