The Experts below are selected from a list of 23133 Experts worldwide ranked by ideXlab platform
Zhang Qi - One of the best experts on this subject based on the ideXlab platform.
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review of Biomass Pyrolysis oil properties and upgrading research
Energy Conversion and Management, 2007Co-Authors: Zhang Qi, Chang Jie, Wang Tiejun, Xu YingAbstract:Biomass fast Pyrolysis liquefaction has aroused great attention and interests both at home and abroad extensively in recent years. This paper reviews the physicochemical properties and discusses the characteristics of the components and compositions of Biomass Pyrolysis oil. Furthermore, the problems and focuses were summarized with some suggestions presented on upgrading and applications of bio-oil in the decades.
Xu Ying - One of the best experts on this subject based on the ideXlab platform.
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review of Biomass Pyrolysis oil properties and upgrading research
Energy Conversion and Management, 2007Co-Authors: Zhang Qi, Chang Jie, Wang Tiejun, Xu YingAbstract:Biomass fast Pyrolysis liquefaction has aroused great attention and interests both at home and abroad extensively in recent years. This paper reviews the physicochemical properties and discusses the characteristics of the components and compositions of Biomass Pyrolysis oil. Furthermore, the problems and focuses were summarized with some suggestions presented on upgrading and applications of bio-oil in the decades.
Li Da-zhon - One of the best experts on this subject based on the ideXlab platform.
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Technology Present Situation and Prospect of Organic Waste Biomass Pyrolysis in Hot Water
Computer Simulation, 2013Co-Authors: Li Da-zhonAbstract:The technology of Biomass Pyrolysis in hot water is an emerging treatment for oganic waste in recent years.It has more advantage than ordinary Pyrolysis and draws extensive researchers' attention at home and abroad.This paper described the nature of sub and supercritical water,summarized the basic principles of the reaction of Biomass Pyrolysis in tot water,and analysed the research status of industrial application.On this basis,the authors analysed the problems and technical difficulties in the process of Biomass Pyrolysis in hot water,as well as the further issues need to be solved,and proposed the improvement ideal of treatment of Biomass organic waste Pyrolysis in hot water.
Shurong Wang - One of the best experts on this subject based on the ideXlab platform.
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lignocellulosic Biomass Pyrolysis mechanism a state of the art review
Progress in Energy and Combustion Science, 2017Co-Authors: Shurong Wang, Haiping YangAbstract:Abstract The past decades have seen increasing interest in developing Pyrolysis pathways to produce biofuels and bio-based chemicals from lignocellulosic Biomass. Pyrolysis is a key stage in other thermochemical conversion processes, such as combustion and gasification. Understanding the reaction mechanisms of Biomass Pyrolysis will facilitate the process optimization and reactor design of commercial-scale biorefineries. However, the multiscale complexity of the Biomass structures and reactions involved in Pyrolysis make it challenging to elucidate the mechanism. This article provides a broad review of the state-of-art Biomass Pyrolysis research. Considering the complexity of the Biomass structure, the Pyrolysis characteristics of its three major individual components (cellulose, hemicellulose and lignin) are discussed in detail. Recently developed experimental technologies, such as Py-GC–MS/FID, TG-MS/TG-FTIR, in situ spectroscopy, 2D-PCIS, isotopic labeling method, in situ EPR and PIMS have been employed for Biomass Pyrolysis research, including online monitoring of the evolution of key intermediate products and the qualitative and quantitative measurement of the Pyrolysis products. Based on experimental results, many macroscopic kinetic modeling methods with comprehensive mechanism schemes, such as the distributed activation energy model (DAEM), isoconversional method, detailed lumped kinetic model, kinetic Monte Carlo model, have been developed to simulate the mass loss behavior during Biomass Pyrolysis and to predict the resulting product distribution. Combined with molecular simulations of the elemental reaction routes, an in-depth understanding of the Biomass Pyrolysis mechanism may be obtained. Aiming to further improve the quality of Pyrolysis products, the effects of various catalytic methods and feedstock pretreatment technologies on the Pyrolysis behavior are also reviewed. At last, a brief conclusion for the challenge and perspectives of Biomass Pyrolysis is provided.
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Overview of Computational Fluid Dynamics Simulation of Reactor-Scale Biomass Pyrolysis
ACS Sustainable Chemistry & Engineering, 2017Co-Authors: Qingang Xiong, Yang Yang, Yaoyu Pan, Jingchao Zhang, Kun Hong, Giulio Lorenzini, Shurong WangAbstract:Computational fluid dynamics (CFD) has been widely used in both scientific studies and industrial applications of reactor-scale Biomass Pyrolysis. In this Perspective, the state-of-the-art progress in CFD modeling of reactor-scale Biomass Pyrolysis was summarized and discussed. First, because of the importance of Biomass Pyrolysis reaction kinetics to the predictability of CFD, the commonly used Pyrolysis reaction kinetics in CFD modeling of reactor-scale Biomass Pyrolysis were reviewed. The characteristics of each reaction kinetics were described. Then, the theoretical basis and practical applications of three main CFD modeling approaches, i.e., porous media model, multifluid model, and discrete particle model for simulating reactor-scale Biomass Pyrolysis were presented. The activities and progresses with respect to each CFD modeling approach for reactor-scale Biomass Pyrolysis were reviewed. Aspects such as experimental validation, modeling speed, and capability were discussed. Finally, the paper was c...
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Catalytic Esterification of Model Compounds of Biomass Pyrolysis Oil
2009 International Conference on Energy and Environment Technology, 2009Co-Authors: Zuogang Guo, Shurong Wang, Yingying ZhuAbstract:Biomass Pyrolysis oil is a complex mixture containing a wide variety of oxygenated compounds, which results in difficulties in bio-oil upgrading. To gain a clearer understanding of the reaction pathways, seven compounds were chosen to represent Biomass Pyrolysis oil. In this paper, catalytic desertification was applied to convert the carboxylic acids into esters. The influences of reaction time and water content were studied, and a conversion rate about 80% of carboxylic acids was reached
Qin Qin - One of the best experts on this subject based on the ideXlab platform.
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Kinetic and experimental characterizations of Biomass Pyrolysis in granulated blast furnace slag
International Journal of Hydrogen Energy, 2018Co-Authors: Xin Yao, Huaqing Xie, Wenjun Duan, Zhengri Han, Qin QinAbstract:Abstract With the objective of abating the energy crisis and greenhouse gas emissions, Biomass Pyrolysis to recover waste heat from granulated blast furnace (BF) slag was investigated via thermogravimetric and continuous fixed-bed experiments. The results showed that the mass conversion of Biomass Pyrolysis increased with the increasing heating rate. At the same time, a higher gas yield and lower heating value (LHV) and concentrations of H2 and CO were obtained with the increasing temperature. Granulated BF slag can promote the Pyrolysis and reforming of Biomass tar, increasing the gas yield and LHV and H2 concentration. Thus, granulated BF slag not only provided heat for the Pyrolysis reaction but also promoted the Pyrolysis and reforming of Biomass tar, which might block and corrode pipes in practical production. The shrinking core model (R2) selected using a two-step calculation method interpreted the Biomass Pyrolysis in granulated BF slag. The reaction activation energy ranged from 60.743 kJ/mol to 65.963 kJ/mol as the heating rate decreased from 40 K/min to 10 K/min.
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Thermogravimetric analysis of the Biomass Pyrolysis with copper slag as heat carrier
Journal of Thermal Analysis and Calorimetry, 2017Co-Authors: Zongliang Zuo, Huaqing Xie, Wenjun Duan, Sihong Liu, Qin QinAbstract:Thermo gravimetric analysis experiments were carried out on Pyrolysis of three kinds of Biomasses by temperature programming method. Employed by thermogravimetric analyzer, the effects of the type of Biomass and the ratio of copper slag addition on Pyrolysis were studied. Biomass Pyrolysis process can be divided into four stages, dehydration, pre-Pyrolysis, Pyrolysis and carbonization. The experimental yields in this paper were modeled by CH4, C2H6, C3H8, C2H4 and C3H6, considering first-order primary reaction and reactions of alkanes and alkenes. Copper slag is beneficial for Biomass Pyrolysis. With Coats–Redfern method, nonlinear regression of Biomass catalytic Pyrolysis showed that reaction mechanism of Pyrolysis process confirms well with shrinking core model (A3). The kinetic parameters and equations were also calculated. Copper slag promotes both the primary reactions of Biomass Pyrolysis and the Cracking reactions of alkanes and alkenes, but it cannot decrease the activation energy effectively.