Thermodynamic analysis of steam assisted conversions of bio-oil components to synthesis gas

Aktaş, Seda; Karakaya, Mustafa; Avcı, Ahmet K.

doi:10.1016/j.ijhydene.2008.12.019

Cited by 46 publications

(15 citation statements)

References 28 publications

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“…Bio-oil model compounds have been widely studied in steam reforming (SR) conditions, like acetic acid [7e9], ethanol [1,10,11], acetol [6,12] and butanol [6], between others. There are also several thermodynamic analysis [5,13] and studies with real bio-oils [2,14].…”

Section: Introductionmentioning

confidence: 99%

Hydrogen production from n-butanol over alumina and modified alumina nickel catalysts

Bizkarra

Barrio

Yartu

et al. 2015

International Journal of Hydrogen Energy

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Section: Introductionmentioning

confidence: 99%

Hydrogen production from n-butanol over alumina and modified alumina nickel catalysts

Bizkarra

Barrio

Yartu

et al. 2015

International Journal of Hydrogen Energy

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“…Methane selectivity was reported to be highest in SRAC and lowest in SRA respectively. In contrast to Vagia and Lemonidou, Aktaş et al [85] reported a higher hydrogen mole fraction even at pressure as high as 30 atm in SR of model bio-oil components like isopropyl alcohol, lactic acid and phenols. These results are in contradiction to most of the authors in SR of various liquid fuels like ethanol, glycerol and butanol [16,43,63].…”

Section: Thermodynamic Investigationsmentioning

confidence: 76%

Hydrogen via steam reforming of liquid biofeedstock

Nahar¹,

Dupont

2012

Biofuels

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Summary:This review paper examines the use of steam reforming to convert bio-liquids like ethanol, glycerol, butanol, vegetable oil, bio-oils and biodiesel into hydrogen gas. The focus of the research was to investigate the research being undertaken in terms of catalyst developments for the steam reforming of the above mentioned feedstock, and to determine the perspective opportunities in this area. Hydrogen production by steam reforming of biooil, ethanol, and pure glycerol has been widely investigated; several thermodynamic and catalytic investigations are available restricting new investigations. In contrast, hydrogen production from waste streams, vegetable oil, biodiesel and butanol is very recent and has room for further developments.

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“…The thermodynamic analysis makes it possible to determine the limiting (equilibrium) synfuel compositions by using the method of Gibbs free energy minimization (GFEM). The basic concept of GFEM is built on the principle that the thermochemical system is thermodynamically favorable when its total Gibbs energy is at its minimum value and its differential is zero for each pressure and temperature . The basic concept of GFEM can be written as

{((), d G^{t})}_{T, p} = 0 .

…”

Section: Methodsmentioning

confidence: 99%

Thermochemical waste-heat recuperation by steam methane reforming with flue gas addition

Pashchenko

2019

Int J Energy Res

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Summary The process flow schematic of fuel‐consuming equipment with thermochemical waste‐heat recuperation by steam methane reforming with an addition of flue gas to the reaction mixture is suggested. The advantages of such a thermochemical recuperation (TCR) system compared with the TCR system by steam methane reforming are shown and justified. Based on the first law energy analysis, the heat inputs and outputs of the TCR system were determined. To determine the exhaust gases heat transformed into chemical energy of a new synthetic fuel, the thermodynamic analysis by minimizing Gibbs energy via Aspen HYSYS was performed. It was found that with an increase in the mole fraction of combustion products in the reaction mixture, the enthalpy of the methane reforming reaction increases, especially noticeable at the temperature range above 1000 K. Based on the heat, balance of the TCR system was established that the addition of combustion products to the reaction mixture has the following effects: reducing the heat input for steam production in a steam generator; reduction of the steam generator size because of the need to produce a smaller amount of steam in comparison with TCR by pure steam methane reforming; and reducing the amount of heat transferred through the wall of the reformer and, as a consequence, reduction in size of the reformer.

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Thermodynamic analysis of steam assisted conversions of bio-oil components to synthesis gas

Cited by 46 publications

References 28 publications

Hydrogen production from n-butanol over alumina and modified alumina nickel catalysts

Hydrogen production from n-butanol over alumina and modified alumina nickel catalysts

Hydrogen via steam reforming of liquid biofeedstock

Thermochemical waste-heat recuperation by steam methane reforming with flue gas addition

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