Effect of torrefaction on biomass structure and hydrocarbon production from fast pyrolysis

Neupane, Sneha; Adhikari, Sushil; Wang, Zhouhong; Ragauskas, Arthur J.; Pu, Yunqiao

doi:10.1039/c4gc02383h

Cited by 124 publications

(79 citation statements)

References 47 publications

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“…The biomasses were torrefied in 1 L stainless steel container and heated in a reactor at a temperature of 300°C for 1 hour under an inert atmosphere and low heating rate to obtain a complete torrefied biomass (Sarvaramini et al, 2014;Neupane et al, 2015). The final torrefied solid product was recovered from the reactor and kept for the next process.…”

Section: Methodsmentioning

confidence: 99%

Study on combustion characteristics of coal-biomass for co-firing system as a feedstock of coal gasification process

Umar

Hudaya

Sulistyohadi

2017

IMJ

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Biomass co-firing is recognised as a crucial technology to aid in the use of fossil fuels, particularly due to its relative ease of implementation. Many studies of the combustion processes associated with cofiring have been conducted elsewhere. This paper discusses the combustion characteristics of coal and torrefied biomasses. Combustion profiles can be used to study certain combustion properties of fuels and fuel blends. The biomass fuels utilized in this study include twig, trunk and weed as the wastes from tea plantation. The results of this work provide data concerning the combustion processes of co-firing determined by simultaneous thermal analysis (STA) methods. Simultaneous thermogravimetric & differential scanning calorimetry/differential thermal analysis (STA, TGA-DSC/DTA) measures both the heat flow (DSC) and the weight changes (TG) in a material as a function of temperature or time in a controlled atmosphere. The results indicate that the mixture of coal and torrefied trunk in the weight ratio of coal-trunk of 25:75 shows the best combustion performance compared to other compositions of coal -torrefied biomass.Keywords: coal, biomass, co-firing, torrefaction, combustion Kata kunci: batubara, biomasa, pembakaran bersama, pengarangan, pembakaran. ABSTRAK Sistem pembakaran bersama (co-firing) diakui sebagai teknologi yang dapat membantu dalam membatasi penggunaan bahan bakar fosil, terutama karena mudah untuk diimplementasikan. Beberapa studi tentang proses pembakaran terkait dengan pembakaran bersama ini telah banyak dilakukan. Makalah ini membahas karakteristik pembakaran batubara dan biomasa yang telah mengalami proses pengarangan (torrefaction). Profil pembakaran dapat digunakan untuk mempelajari

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Section: Methodsmentioning

confidence: 99%

Study on combustion characteristics of coal-biomass for co-firing system as a feedstock of coal gasification process

Umar

Hudaya

Sulistyohadi

2017

IMJ

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“…A typical 13 C biomass spectrum can be broadly grouped into four sections [44]: hemicellulose [11,45,46]. The group of peaks between 62 ppm and 103 ppm are due to C1 to C6 atoms, predominantly of cellulose although hemicellulose also makes a contribution [11,47].…”

Section: C Nmr Spectroscopymentioning

confidence: 99%

“…One such technique is torrefaction, which involves a non-combustive mild pyrolysis reaction which occurs when the biomass is heated in an inert atmosphere (typically N 2 ) to a temperature between 200°C and 300°C [11].…”

Section: Introductionmentioning

confidence: 99%

Thermochemical and structural changes in Jatropha curcas seed cake during torrefaction for its use as coal co-firing feedstock

Madanayake

Gan

Eastwick

et al. 2016

Energy

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(2016) Thermochemical and structural changes in Jatropha curcas seed cake during torrefaction for its use as coal co-firing feedstock. Energy, Access from the University of Nottingham repository: http://eprints.nottingham.ac.uk/32379/1/torrefaction%20paperfinalcombined.docx.pdf Copyright and reuse:The Nottingham ePrints service makes this work by researchers of the University of Nottingham available open access under the following conditions. This article is made available under the Creative Commons Attribution Non-commercial No Derivatives licence and may be reused according to the conditions of the licence. For more details see: http://creativecommons.org/licenses/by-nc-nd/2.5/ A note on versions:The version presented here may differ from the published version or from the version of record. If you wish to cite this item you are advised to consult the publisher's version. Please see the repository url above for details on accessing the published version and note that access may require a subscription. AbstractJatropha curcas seed cake is a viable feedstock for co-firing with coal as it has the advantages of being renewable, carbon-neutral and sourced from a versatile plant.Torrefaction, a mild pyrolysis treatment by heating in a N 2 atmosphere, was investigated as a technique to improve the thermochemical properties of the biomass, primarily the higher heating value (HHV). The temperature and holding time were to beyond 300°C.

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“…However, despite losses below this limit and an increment of the higher heating values, the energy density of the torrefied material might not be satisfactory enough, when compared to the raw material. If that happens, it is necessary to adjust the process parameters as temperature, residence time, and type of biomass, as highlighted by Almeida et al (2010) and Neupane et al (2015).…”

Section: Physical and Energetic Propertiesmentioning

confidence: 99%

Changes caused by torrefaction on urban wooden waste

Andrade¹,

Brito²,

Dias³

et al. 2017

Sci. For.

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ResumoNeste trabalho foram caracterizados resíduos de madeira de origem urbana, antes e depois de submetidos a torrefação. Foram avaliadas cinco composições (tratamentos) de resíduos, compreendendo madeira maciça e painéis reconstituídos, provenientes de uma estação de reciclagem. A torrefação foi realizada em forno elétrico, com atmosfera inerte, saturada em gás nitrogênio, na temperatura de 280 ºC durante 60 minutos. Foram analisadas as propriedades físicas, químicas e energéticas no material in natura e torrificado. Os resultados demostraram que a torrefação aumentou os teores de lignina insolúvel, teor de carbono fixo e poder calorífico superior. Além disso, reduziu os teores de extrativos totais, holocelulose, materiais voláteis, densidade a granel e densidade energética. A torrefação não influenciou nos teores de cinzas, no entanto, mostrou-se eficiente para melhoria da moabilidade dos resíduos. Além disso, o rendimento da torrefação foi afetado tanto pelas características do processo quanto pela composição dos tratamentos avaliados.Palavras-chave: pirolise leve; degradação térmica; biomassa lenhosa; energia da madeira. AbstractThis work analyzed torrefied wooden waste from urban origin. Five compositions of residues (treatments) were analyzed, made up by solid wood and panels from a recycling station. Torrefaction was performed in an electric furnace, within an inert atmosphere saturated with nitrogen gas, and a temperature of 280 °C for 60 minutes. The physical, chemical and energetic properties of raw and torrefied materials were measured. The analysis showed that the torrefaction process led to an increase of acid-insoluble lignin content, fixed carbon content and higher heating value. Furthermore we observed a reduction of extractives, volatile matter, bulk density and energy density. Torrefaction did not affect the ash content, but proved effective to improving the grinding ability of the residues. In addition, the characteristics of the process and samples composition influenced the gravimetric yield of torrefaction.

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Effect of torrefaction on biomass structure and hydrocarbon production from fast pyrolysis

Abstract: Torrefaction has been shown to improve the chemical composition of bio-oils produced from fast pyrolysis by lowering its oxygen content and enhancing the aromatic yield.

Cited by 124 publications

References 47 publications

Study on combustion characteristics of coal-biomass for co-firing system as a feedstock of coal gasification process

Study on combustion characteristics of coal-biomass for co-firing system as a feedstock of coal gasification process

Thermochemical and structural changes in Jatropha curcas seed cake during torrefaction for its use as coal co-firing feedstock

Changes caused by torrefaction on urban wooden waste

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