Bio-oil upgrading by means of ethyl ester production in reactive distillation to remove water and to improve storage and fuel characteristics

Xu, Junming; Jiang, Jianchun; Sun, Yunjuan; Lu, Yonglai

doi:10.1016/j.biombioe.2008.02.002

Cited by 135 publications

(72 citation statements)

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“…The chemical names, chemical formula and relative contents are listed in Table 5. The bio-oil was a complex mixture highly oxygenated organics such as esters, ethers, aldehydes, ketones, phenols, organic acids and alcohols [36]. These chemicals originated from the degradation of cellulose, hemicellulose and lignin in the pine sawdust [24].…”

Section: Bio-oil Analysismentioning

confidence: 99%

Combining Mo–Cu/HZSM-5 with a two-stage catalytic pyrolysis system for pine sawdust thermal conversion

Huang

Wei

Crandall

et al. 2015

Fuel

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a b s t r a c tMo-Cu/HZSM-5 catalysts for pine sawdust thermal conversion were prepared using an impregnation method. The Mo-Cu/HZSM-5 catalysts and HZSM-5 were characterized by Brunauer-Emmett-Teller (BET), X-ray diffraction (XRD) and transmission electron microscopy (TEM). All characterization results indicated that the introduction of CuO is beneficial to the dispersion of MoO 3 in the HZSM-5. Combined with the two-stage catalytic pyrolysis system, the Mo-Cu/HZSM-5 catalysts were used for pine sawdust thermal conversion. The products included gas, bio-oil and bio-char. The gas was analyzed by Gas chromatography (GC). Gas chromatography-mass spectrometry (GC-MS) was used to identify the compounds in bio-oils. The water content, higher heating value (HHV) and viscosity of bio-oils were measured. The HHV and elements of bio-char were determined. The results indicated that Mo(3%)-Cu(3%)/ HZSM-5 treatment yielded the highest amount of C 6 -C 12 hydrocarbons, showed a robust ability to convert methane in the gas to bio-oil, and displayed no significant difference in the properties of bio-char when compared to different treatments in the same pyrolysis conditions.

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Section: Bio-oil Analysismentioning

confidence: 99%

Combining Mo–Cu/HZSM-5 with a two-stage catalytic pyrolysis system for pine sawdust thermal conversion

Huang

Wei

Crandall

et al. 2015

Fuel

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“…A number of recent studies have examined acid catalysed esterification of bio-oils in alcohols [162,[164][165][166][167]. The main advantage here compared to simple solvent addition is much higher conversion of undesirable compounds, thus resulting in biooils with significantly improved properties.…”

Section: Developments In Acid-catalysed Esterificationmentioning

confidence: 99%

“…Lohitharn et al [167] found that aldehydes inhibit the esterification of acids at lower temperatures. Junming et al [164]obtained a good quality product from esterification of bio-oils catalysed by SO 4 2-/M x O y and H 2 O 2 in a reactive distillation column. The minimum TAN that Moens et al [162] could achieve from various approaches to catalysed esterification and removal of products was 20.…”

Section: Developments In Acid-catalysed Esterificationmentioning

confidence: 99%

“…Since esterification and acetylisation reactions are equilibrium reactions, increasing concentrations of esters, acetals and water will tend to shift equilibrium back towards the original reactants. A solution to this problem is to remove the reaction products as they are formed by azetropic water removal or reactive distillation [162,164].…”

Section: Developments In Acid-catalysed Esterificationmentioning

confidence: 99%

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A review of recent laboratory research and commercial developments in fast pyrolysis and upgrading

Butler

Devlin

Meier³

et al. 2011

Renewable and Sustainable Energy Reviews

429

252

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Publication date 2011-10 Publication informationRenewable and Sustainable Energy Reviews, 15 (8): 4171-4186Publisher Elsevier Item record/more information http://hdl.handle.net/10197/5976 Publisher's statementThis is the author's version of a work that was accepted for publication in Renewable and Sustainable Energy Reviews. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Renewable and Sustainable Energy Reviews (VOL 15, ISSUE 8, (2011) ABSTRACT Robust alternative technology choices are required in the paradigm shift from the current crude oil-reliant transport fuel platform to a sustainable, more flexible transport infrastructure. In this vein, fast pyrolysis of biomass and upgrading of the product is deemed to have potential as a technology solution. The objective of this review is to provide an update on recent laboratory research and commercial developments in fast pyrolysis and upgrading techniques. Fast pyrolysis is a relatively mature technology and is on the verge of commercialisation. While upgrading of biooils is currently confined to laboratory and pilot scale, an increased understanding of upgrading processes has been achieved in recent times.

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“…10 O uso de derivados do bio-óleo como combustível em veículos de transporte é tecnicamente possível, mas existe a necessidade de pesquisas e investimentos. [11][12][13][14] Pesquisas envolvendo separação e transformação de componentes de bio-óleo em ésteres, seja para caracterizar as reações e os produtos da pirólise, avaliando a estabilidade do produto durante a estocagem ou ainda, testar a mistura deste biocombustível em mistura com o diesel de petróleo ou a gasolina vêm sendo realizadas, [15][16][17][18][19][20][21] seja com o objetivo de verificar a estabilidade do produto durante a estocagem ou avaliar o seu desempenho e possibilidade de uso em mistura com o combustível fóssil.…”

Section: Introductionunclassified

Avaliação de biocombustível derivado do bio-óleo obtido por pirólise rápida de biomassa lignocelulósica como aditivo para gasolina

et al. 2010

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Recebido em 6/2/09; aceito em 29/10/09; publicado na web em 26/3/10 EVALUATION OF BIOFUEL DERIVED FROM LIGNOCELLULOSIC BIOMASS FAST PYROLYSIS BIO-OIL FOR USE AS GASOLINE ADDICTIVE. A biofuel was prepared from acid aqueous fraction (pH = 2) of bio-oil produced by fast pyrolysis (Bioware Technology) of lignocellulosic biomass (sugar cane residue) and tested in blends (2, 5, 10 e 20% v/v) with gasoline type C (common) marketed in Brazil. The specification tests made in the Refinery President Getúlio Vargas (PETROBRAS) showed increasing in the octane number (MON) and antiknock index (AKI) with reduction in the residue generation during the combustion. The physicochemical characteristics of the biofuel were similar that combustible alcohol allowing its use as gasoline additive.Keywords: distillation curve; induction period; steam pressure. INTRODUÇÃOA demanda por energia está aumentando rapidamente, devido ao crescimento da população e seus anseios tecnológicos. A população mundial dedicou-se às indústrias de carvão e petróleo, mas com a exploração desenfreada de reservas naturais e a questão do efeito estufa, existe atualmente grande interesse para a produção sustentável de energia. As fontes de energia renováveis, como a biomassa, têm papel fundamental no contexto energético, ambiental e sócio-econômico. 1A biomassa consiste em elementos como carbono, hidrogênio, oxigênio e nitrogênio. O enxofre está presente em menores proporções e alguns tipos de biomassa contêm também porções significantes de espécies inorgânicas.2 As fontes de biomassa incluem madeira e resíduos de madeira, colheitas agrícolas e seus resíduos, resíduo sólido municipal, resíduos animais, resíduo de processamento de alimento, plantas aquáticas e algas.3 Os principais constituintes moleculares da biomassa são hemicelulose, celulose e lignina e um dos principais processos de conversão é a pirólise. 4 Vários mecanismos já foram propostos para as possíveis rotas de reação que ocorrem durante a pirólise de biomassa.5-8 O ácido acético é o principal produto da decomposição térmica. Durante a pirólise ocorre a formação de água por desidratação, de ácido acético pela eliminação de grupo acetila originariamente ligado a unidades de xilose, de furfural pela desidratação da xilose, de ácido fórmico a partir de grupos carboxílicos do ácido urônico e de metanol a partir de grupos metoxilas também do ácido urônico.O processo de pirólise produz combustíveis líquidos com alto rendimento, 9 porém, ainda existem alguns desafios que precisam ser enfrentados no uso destes produtos. O óleo resultante da pirólise de biomassa, denominado genericamente de bio-óleo, além de ser um combustível líquido renovável, sendo esta a principal vantagem sobre derivados do petróleo, pode ser usado para a produção de inúmeras substâncias químicas. 10O uso de derivados do bio-óleo como combustível em veículos de transporte é tecnicamente possível, mas existe a necessidade de pesquisas e investimentos.11-14 Pesquisas envolvendo separação e transformação de componentes de bio-óleo em és...

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Bio-oil upgrading by means of ethyl ester production in reactive distillation to remove water and to improve storage and fuel characteristics

Cited by 135 publications

References 10 publications

Combining Mo–Cu/HZSM-5 with a two-stage catalytic pyrolysis system for pine sawdust thermal conversion

Combining Mo–Cu/HZSM-5 with a two-stage catalytic pyrolysis system for pine sawdust thermal conversion

A review of recent laboratory research and commercial developments in fast pyrolysis and upgrading

Avaliação de biocombustível derivado do bio-óleo obtido por pirólise rápida de biomassa lignocelulósica como aditivo para gasolina

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