Pyrolysis kinetics of biomass (herb residue) under isothermal condition in a micro fluidized bed

Guo, Feiqiang; Dong, Yong; Lv, Zhaochuan; Fan, Pengfei; Yang, Shihe; Dong, Li

doi:10.1016/j.enconman.2015.01.042

Cited by 65 publications

(22 citation statements)

References 40 publications

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“…The samples are fed to the heated bubbling bed through a pulsed (0.1–1 s) electromagnetic valve. The volatile products are collected in gas sampling bags for offline GC analysis or via capillary column for online MS analysis (Choi et al, ; Gai et al, ; Guo et al, ; Yu et al, , , ).…”

Section: Experimental Setups To Measure Pyrolysis Kineticsmentioning

confidence: 99%

Measuring biomass fast pyrolysis kinetics: State of the art

SriBala

Carstensen

Marin

2018

WIREs Energy & Environment

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Fast pyrolysis of lignocellulosic biomass is considered to be a promising thermochemical route for the production of drop‐in fuels and valuable chemicals. During the past decades, a comprehensive understanding of feedstock structure, fast pyrolysis kinetics, product distribution, and transport effects that govern the process has allowed to design better pyrolysis reactors and/or catalysts. A variety of lignocellulosic biomass feedstocks, like corn stover, pinewood, poplar, and model compounds like glucose, xylan, monolignols have been utilized to study the thermal decomposition at or close to fast pyrolysis conditions. Significant progress has been made in understanding the kinetics by developing unique setups such as drop‐tube, PHASR, and micropyrolyzer reactors in combination with the use of advanced analytical techniques such as comprehensive gas and liquid chromatography (GC, LC) with time‐of‐flight mass spectrometer (TOF‐MS). This has led to initial intrinsic kinetic models for biomass and its main components, namely cellulose, hemicellulose, and lignin, validated using experimental setups where the effects of heat and mass transfer on the performance of the process, expressed using Biot and pyrolysis numbers, are adequately negligible. Yet, not all aspects of fast pyrolysis kinetics of biomass components are equally well understood. The use of time‐resolved or multiplexed experimental techniques can further improve our understanding of reaction intermediates and their corresponding kinetic mechanisms. The novel experimental data combined with first principles based multiscale models can reshape biomass pyrolysis models and transform biomass fast pyrolysis to a more selective and energy efficient process. This article is categorized under: Energy and Climate > Climate and Environment Energy Research & Innovation > Science and Materials Bioenergy > Science and Materials

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Section: Experimental Setups To Measure Pyrolysis Kineticsmentioning

confidence: 99%

Measuring biomass fast pyrolysis kinetics: State of the art

SriBala

Carstensen

Marin

2018

WIREs Energy & Environment

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“…Consequently, the residence times are shorter and the reaction vessels are smaller resulting in lower investment costs [19]. We demonstrated the feasibility of transesterifying oil vapors at reaction times below 1 s [16].…”

Section: Introductionmentioning

confidence: 97%

One step cracking/transesterification of vegetable oil: Reaction–regeneration cycles in a capillary fluidized bed

Boffito

Manrique

Patience

2015

Energy Conversion and Management

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“…The Flynn-Wall-Ozawa (FWO) and Coats-Redfern (CR) integral methods are most popular and widely used non-isothermal method to describe kinetic parameters of non-catalytic and catalytic pyrolysis of biomass [15]. For example, Guo et al [20] pointed out that kinetic behaviour of biomass pyrolysis was easily interpreted using the FWO and CR integral methods. According to the International Confederation of Thermal Analysis and Calorimetry (ICTAC), the kinetic analysis of solidstate degradation is more accurate and reliable when investigated at multiple heating rates [17].…”

Section: Introductionmentioning

confidence: 99%

“…The application of Nickel-Cerium/HZSM-5 catalyst in the catalytic pyrolysis of sugarcane bagasse via thermogravimetric analyser (TGA) becomes the novelty of this research. Therefore, the aim of this research is to evaluate the performance of Ni-Ce/HZSM-5 catalyst at multiple heating rates (5,10,20, and 30 °C/min) on pyrolysis of sugarcane bagasse via thermogravimetric analyser and evaluate the kinetic analysis for catalytic and non-catalytic pyrolysis of sugarcane bagasse. The Flynn-Wall-Ozawa integral method was applied to determine the activation energy (E) over degradation of biomass for non-catalytic and catalytic pyrolysis.…”

Section: Introductionmentioning

confidence: 99%

Thermogravimetric Kinetics of Catalytic Pyrolysis of Sugarcane Bagasse over Nickel-Cerium/HZSM-5 Catalyst

Balasundram¹,

Zaman²,

Ibrahim³

et al. 2020

ARMS

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The objective of this research is to investigate the performance of Nickel-Cerium/HZSM-5 catalyst on pyrolysis of sugarcane bagasse and kinetic analysis via thermogravimetric analyzer. The sample is pyrolyzed from 30 to 700 °C at multiple heating rates (5, 10, 20, and 30 °C/min) in a nitrogen environment. The HZSM-5 was used as a support, while nickel and cerium were impregnated as promoters via incipient wetness impregnation method. For catalytic samples, the catalyst to biomass ratio was fixed at 1:1. The kinetic analysis of non-catalytic and catalytic pyrolysis was performed using the Flynn-Wall-Ozawa and Coats-Redfern methods. The catalytic pyrolysis has achieved higher activation energy (2.87-68.92 kJ/mol) over conversion than the non-catalytic pyrolysis (24.20-122.33 kJ/mol) using the Flynn-Wall-Ozawa method. The reaction mechanism of non-catalytic and catalytic pyrolysis follows power law (n=1) and chemical reaction (n=2) respectively via the Coats-Redfern method.

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Pyrolysis kinetics of biomass (herb residue) under isothermal condition in a micro fluidized bed

Cited by 65 publications

References 40 publications

Measuring biomass fast pyrolysis kinetics: State of the art

Measuring biomass fast pyrolysis kinetics: State of the art

One step cracking/transesterification of vegetable oil: Reaction–regeneration cycles in a capillary fluidized bed

Thermogravimetric Kinetics of Catalytic Pyrolysis of Sugarcane Bagasse over Nickel-Cerium/HZSM-5 Catalyst

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