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Journal ArticleDOI

Thermal and catalytic upgrading of a biomass-derived oil in a dual reaction system

TLDR
In this article, a dual-reactor system over HZSM-5, silica-alumina and a mixed catalyst was used to upgrade bio-oil to liquid fuels.
Abstract
The thermal and catalytic upgrsding of bio-oil to liquid fuels was studied at atmospheric pressure in a dual reactor system over HZSM-5, silica-alumina and a mixed catalyst containing HZSM-5 and silica-alumina This bio-oil was produced by the rapid thermal processing of the maple wood In this work, the intent was to improve the catalyst life Therefore, the first reactor containing no catalyst facilitated thermal cracking of blo-oil whereas the second reactor containing the desired catalyst upgraded the thermally cracked products The effects of process variables such as reaction temperature (350°C to 410°C), space velocity (18 to 72 h−1) and catalyst type on the amounts and quality of organic liquid product (OLP) were investigated, In the case of HZSM-5 catalyst, the yield of OLP was maximum at 272 wt% whereas the selectivity for aromatic hydrocarbons was maximum at 83 wt% The selectivities towards aromatics and aliphatic hydrocarbons were highest for mixed and silica-alumina catalysts, respectively In all catalyst cases, maximum OLP was produced at an optimum reaction temperature of 370°C in both reactors, and at higher space velocity The gaseous product consisted of CO and CO2, and C1-C6 hydrocarbons, which amounted to about 20 to 30 wt% of bio-oil The catalysts were deactivated due to coking and were regenerated to achieve their original activity On a etudie la transformation thermique et cataly-tique d'huile bioloique en combustibles liuides a la pression atmospherique dans un reacteur double sur un catalyseur HZSM-5, un catalyseur de silice-alumine et un catalyseur mixte contenant du HZSM-5 et de la silice-alumine Cette huile biologique a ete produite par le traitement thermique rapide du bois d'erable Dans ce travail, le but est d'ameliorer la vie du catalyseur Ainsi, le premier reacteur ne contenant aucun catalyseur facilite le crauage thermique de l'huile biologique, tandis que le deuxierne reacteur contenant le catalyseur desire ameliore les produits du craquage thermiue On a etudie les effets des variables de procedes, tels la temperature de reaction de 350°C a 410°C), la vitesse spatiale (de 18 a 72 h−1) et le type de catalyseur, sur la quantite et la qualite de produit liquide organique (OLP) Dans le cas du catalyseur HZSM-5, le rendement en OLP est maximum a 272% en poids, alors que la selectivite pour les hydrocarbures arornatiques est maximum a 83% en poids Les selectivites pour les hydrocarbures arornatiques et alipha-tiques sont les plus grandes pour le cadyseur mixte et le catalyseur de silice-alumine, respectivement Dans tous les cas de catalyseurs, on obtient une production maximum d'OLP a une temperature de reaction optimum de 370°C dans les deux reacteurs, et a une grande vitesse spatiale Le produit gazeux comprend des hydrocarbures de CO et de CO2 et des hydrocarbures C1-C6 qui correspondent a environ 20%-30% de l'huile biologique Les catalyseurs ont ete desactives en raison de la cokefaction et ont ete regeneres afin qu'ils remplissent leur fonction originale

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Citations
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Journal ArticleDOI

Synthesis of transportation fuels from biomass: chemistry, catalysts, and engineering.

TL;DR: Hydrogen Production by Water−Gas Shift Reaction 4056 4.1.
Journal ArticleDOI

Synergies between Bio‐ and Oil Refineries for the Production of Fuels from Biomass

TL;DR: The chemistry, catalysts, and challenges involved in the production of biofuels are discussed, allowing us to rapidly transition to a more sustainable economy without large capital investments for new reaction equipment.
Journal ArticleDOI

Processing biomass-derived oxygenates in the oil refinery: Catalytic cracking (FCC) reaction pathways and role of catalyst

TL;DR: In this article, the catalytic cracking of glycerol and sorbitol, as representative of biomass-derived oxygenates, was studied at 500-700°C with six different catalysts, including a fresh fluid catalytic cracker, an equilibrium FCC catalyst with metal impurities (ECat), a mesoporous Al2O3, a USY zeolite (Y), a ZSM5-based FCC additive (ZSM5), and an inert silicon carbide (SiC).
Journal ArticleDOI

Recent advances in heterogeneous catalysts for bio-oil upgrading via “ex situ catalytic fast pyrolysis”: catalyst development through the study of model compounds

TL;DR: In this article, a review of recent advances in heterogeneous catalysts for hydrodeoxygenation of biomass pyrolysis products is presented, focusing on studies that made use of model compounds for comparison of catalysts and the reaction networks they promote.
Journal ArticleDOI

Transformation of Oxygenate Components of Biomass Pyrolysis Oil on a HZSM-5 Zeolite. II. Aldehydes, Ketones, and Acids

TL;DR: In this article, the catalytic transformation over a HZSM-5 zeolite of key components of the liquid product obtained by the flash pyrolysis of biomass, namely, acetaldehyde, ketones (acetone and butanone), and acetic acid, has been studied, and great differences in reactivity and degradation to coke have been found.
References
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Journal ArticleDOI

Production of hydrocarbons by catalytic upgrading of a fast pyrolysis bio-oil. Part I: Conversion over various catalysts

TL;DR: In this article, the upgrading of a fast pyrolysis bio-oil was studied with different catalysts in a fixed bed micro-reactor, and the results showed that doubling the space velocity from 1.8 to 3.6 h−1 resulted in decreased coke, char and gas formation and increased ODF yields.
Journal ArticleDOI

Production of hydrocarbons by catalytic upgrading of a fast pyrolysis bio-oil. Part II: Comparative catalyst performance and reaction pathways

TL;DR: In this paper, the performance of five catalysts, namely, HZSM-5, H-mordenite H-Y, silicalite and silica-alumina, for the upgrading of pyrolysis bio-oil was examined for their relative performance in the production of organic distillate fraction (ODF), hydrocarbon formation and minimization of char, coke and tar formation.
Journal ArticleDOI

Infrared, Microcalorimetric, and Electron Spin Resonance Investigations of the Acidic Properties of the H-ZSM-5 Zeolite

TL;DR: The infrared spectra of the H-ZSM-5 zeolite calcined at temperatures up to 1173 K, and the corresponding electron spin resonance and microcalorimetric data are discussed in this paper.
Journal ArticleDOI

Catalytic upgrading of pyrolysis oil

TL;DR: In this paper, the upgrading of a fast pyrolysis bio-oil and its two fractions was studied at atmospheric pressure using HZSM-5 as catalyst and the goal was to maximize the desired organic distillate product with a high concentration of aromatic hydrocarbons.
Book

Octane-Enhancing Zeolitic FCC Catalysts: Scientific and Technical Aspects

TL;DR: In this article, the authors present an Octane-Enhancing, Zeolitic FCC Catalysts: Scientific and Technical Aspects, 1989, Vol. 31, No. 3, pp 215-354.
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