Article
Energy & Fuels
Dongdong Feng, Dawei Guo, Qi Shang, Yijun Zhao, Linyao Zhang, Xin Guo, Jian Cheng, Guozhang Chang, Qingjie Guo, Shaozeng Sun
Summary: This study delves into the thermal behavior and evolution profiles of major volatile fragments from three types of biomass pyrolysis, revealing that high temperature promotes tar to soot conversion and the insertion of O atoms increases soot's microcrystalline structure size. Inherent metal species can inhibit soot formation.
Article
Green & Sustainable Science & Technology
Artur Bieniek, Wojciech Jerzak, Marcin Gajek, Aneta Magdziarz
Summary: This study conducted 2D numerical calculations of fast pyrolysis with partial oxidation of pine and pine bark using a drop-tube reactor at 550 degrees C. Experimental verification was done through thermogravimetric analysis of the materials involved. The results showed that increasing oxygen content in the carrier gas led to a linear reduction in char content and a decrease in required energy for pyrolysis.
JOURNAL OF CLEANER PRODUCTION
(2023)
Article
Energy & Fuels
Yifan Wu, Yu Zhang, Jiankun Zhuo, Qiang Yao
Summary: This study investigated the influence of ion-exchangeable calcium on the properties of carbonaceous particulate matter from coal pyrolysis. It was found that ion-exchangeable calcium reduced the soot yield and inhibited the size growth of soot particles. Transmission electron microscopy analysis showed that ion-exchangeable calcium decreased the sizes of disordered cores in soot particles, accelerated the graphitization of soot, and made the soot aggregates more compact. Chemical analysis revealed that the graphitization degree of the soot was first enhanced and then inhibited with increasing calcium loading. Furthermore, the study characterized the inorganic species in the size-segregated soot particles and found that the fractions of calcium and sodium exhibited different trends with particle size.
Article
Thermodynamics
Jiaye Zhang, Chongming Chen, Ao Zhou, Zia Ur Rahman, Xuebin Wang, Dragoslava Stojiljkovic, Nebojsa Manic, Milan Vujanovic, Houzhang Tan
Summary: This study investigated the pyrolysis behavior of coal at elevated pressure using a pressurized drop tube furnace, revealing that pressure, atmosphere, and coal rank significantly affect volatile releasing and char evolution.
Article
Chemistry, Analytical
Artur Bieniek, Malgorzata Sieradzka, Wojciech Jerzak, Aneta Magdziarz
Summary: This study investigated the fast pyrolysis of agricultural biomass (oat and corn straw) in a drop-tube reactor through numerical calculations and experimental verification. The optimal operating parameters for the highest bio-oil production were determined.
JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
(2023)
Article
Energy & Fuels
Qian Li, Hengdi Ye, Zhihua Wang, Haoyu Zhou, Jinchao Wei
Summary: The drop tube furnace was used to investigate the characteristics of coal pyrolysis product, showing that pyrolysis could increase the specific surface area and total pore volume of coal, while producing syngas with high H2+CO content at high temperatures, suitable for synthetic chemical industry raw materials.
JOURNAL OF THE ENERGY INSTITUTE
(2021)
Article
Chemistry, Analytical
Satoshi Umemoto, Shiro Kajitani, Motoaki Kawase
Summary: Primary pyrolysis reaction is crucial in understanding coal gasification reactions. The authors developed an extended CPD model to predict tar formation behavior and resolved conflicting coal structure parameters by modifying the calculation procedure. The modified model was validated through experiments.
JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
(2023)
Article
Energy & Fuels
Joseph Darido, Amal Dhahak, Roda Bounaceur, Celine Le Dreff-Lorimier, Gontrand Leyssens, Fabrice Cazier, Paul Genevray, Frederique Battin-Leclerc
Summary: This study aims to control pollutant emissions from domestic wood burning by first conducting temperature and pollutant measurements, followed by attempting simulation using a detailed chemical model. Results show that by adjusting model parameters to simulate smoke temperature and CO2 mole fraction, a reasonably accurate simulation of pollutants for seven wood batches was achieved.
Article
Thermodynamics
Reka Mustika Sari, Saharman Gea, Basuki Wirjosentono, Sunit Hendrana, Fernando G. Torres
Summary: This study found that coconut coir from coconut shells is an effective tar adsorbent, which can not only remove tar effectively but also improve the physicochemical properties of liquid smoke. The trapped tar in coir increased the calorific value of coir and significantly improved its thermal degradation properties.
CASE STUDIES IN THERMAL ENGINEERING
(2021)
Article
Energy & Fuels
Demin Wang, Zhaohui Chen, Changming Li, Deliang Wang, Yunjia Li, Hang Yang, Zhouen Liu, Jian Yu, Shiqiu Gao
Summary: The study developed an integrated reactor that combined rapid pyrolysis and in situ volatiles upgrading to produce high-quality tar from coal. Under optimized conditions, the tar yield and quality significantly improved, outperforming the results obtained from rapid pyrolysis alone.
Article
Energy & Fuels
Ruining He, Jin Wu, Wenlin Jia, Jinhu Liang, Yang Li
Summary: Experiments of high temperature pyrolysis and soot formation analysis on JP-10 fuel were conducted to analyze its properties and help construct its chemical kinetic mechanism. The results provided valuable insights and data for the study of JP-10 fuel.
Article
Energy & Fuels
Chao Li, Zhongyang Luo, Mengxiang Fang, Qike Yan, Jianmeng Cen
Summary: This study investigated the evolution behavior of light tar during coal fast pyrolysis under different atmospheres and catalytic reformation processes. Results showed that SFG and CRS over Ni/Al2O3 significantly increased light tar yield while having little effect on heavy tar yield. Different components in the light tar exhibited varying selectivity with respect to pyrolysis atmosphere and temperature, with aromatic components playing a dominant role at high temperatures.
FRONTIERS IN ENERGY RESEARCH
(2021)
Article
Multidisciplinary Sciences
Apip Amrullah, Obie Farobie
Summary: The non-catalytic pyrolysis of brown macroalgae (Padina sp.) in different temperature ranges and reaction times was investigated, and its effects on product distribution and conversion rate were analyzed. The highest yields of pyro-oil and pyro-gas were obtained at 600°C with prolonged reaction times. The high reaction temperature resulted in greater generation of heavy tar and increased aromatization degree. The proposed model accurately predicted the behavior of the pyrolysis process.
Article
Energy & Fuels
B. Rajasekhar Reddy, R. Vinu
Summary: This study investigated the microwave-assisted co-pyrolysis of coal blends and found that the tar yield and quality were influenced by the composition of the mixture. Interactions were observed during co-pyrolysis of different coal types, leading to deviations in the composition of the products.
JOURNAL OF THE ENERGY INSTITUTE
(2021)
Article
Engineering, Environmental
Jakub Husar, Patrik Suhaj, Juma Haydary
Summary: A complex mathematical model for screw pyrolysis reactor design and optimization was proposed in this study, which considered various parameters and processes in pyrolysis reactions. The model showed good consistency with experimental data under multiple conditions, indicating its potential for simulation and optimization of industry-scale screw pyrolyzers.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)