Energy consumption of two-stage system of biomass pyrolysis and bio-oil reforming to recover waste heat from granulated BF slag

Yao, Xin; Liu, Yang; Yu, Qingbo; Wang, Shuhuan

doi:10.1016/j.energy.2023.127204

Cited by 4 publications

(3 citation statements)

References 53 publications

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“…When S/C increases from 6 to 10, the hydrogen yield increases, although not obviously. However, the energy consumption of the process increases on account of the increasing steam [5]. The optimal temperature and S/C are 706 • C and 6, respectively, where the hydrogen yield and hydrogen component are 109.13 mol/kg and 70.21%, respectively.…”

Section: Effect Of S/cmentioning

confidence: 99%

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Thermodynamic Analysis of Hydrogen Production from Bio-Oil Steam Reforming Utilizing Waste Heat of Steel Slag

et al. 2023

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(1) Background: The discharged temperature of steel slag is up to 1450 °C, representing heat having a high calorific value. (2) Motivation: A novel technology, integrating bio-oil steam reforming with waste heat recovery from steel slag for hydrogen production, is proposed, and it is demonstrated to be an outstanding method via thermodynamic calculation. (3) Methods: The equilibrium productions of bio-oil steam reforming in steel slag under different temperatures and S/C ratios (the mole ratio of steam to carbon) are obtained by the method of minimizing the Gibbs free energy using HSC 6.0. (4) Conclusions: The hydrogen yield increases first and then decreases with the increasing temperature, but it increases with the increasing S/C. Considering equilibrium calculation and actual application, the optimal temperature and S/C are 706 °C and 6, respectively. The hydrogen yield and hydrogen component are 109.13 mol/kg and 70.21%, respectively, and the carbon yield is only 0.08 mol/kg under optimal conditions. Compared with CaO in steel slag, iron oxides have less effect on hydrogen production from bio-oil steam reforming in steel slag. The higher the basicity of steel slag, the higher the obtained hydrogen yield and hydrogen component of bio-oil steam reforming in steel slag. It is demonstrated that appropriately decreasing iron oxides and increasing basicity could promote the hydrogen yield and hydrogen component of bio-oil steam reforming that utilizes steel slag as a heat carrier during the industrial application.

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Section: Effect Of S/cmentioning

confidence: 99%

“…The energy consumption of steel enterprises in China is about 23% of the total consumption [4]. However, 70% of the energy used in steel enterprises is discharged as waste heat and waste energy [5,6]. Reasonable recovery of waste heat and waste energy is an effective method for the green metallurgy process.…”

Section: Introductionmentioning

confidence: 99%

Thermodynamic Analysis of Hydrogen Production from Bio-Oil Steam Reforming Utilizing Waste Heat of Steel Slag

et al. 2023

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“…Moreover, recent research studies proposed BECCS technologies with integrated gasification [17]. Hydrogenrich gas is also attractive currently due to policies aiming to promote hydrogen use [18][19][20].…”

Section: Introductionmentioning

confidence: 99%

Co-Gasification of Pistachio Shells with Wood Pellets in a Semi-Industrial Hybrid Cross/Updraft Reactor for Producer Gas and Biochar Production

Ryšavý,

Čespiva,

Kuboňová

et al. 2024

Fire

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The possibilities of pistachio shell biochar production on laboratory-scale gasification and pyrolysis devices have been described by several previous studies. Nevertheless, the broader results of the pistachio shell co-gasification process on pilot-scale units have not yet been properly investigated or reported, especially regarding the detailed description of the biochar acquired during the routine operation. The biochar was analysed using several analytical techniques, such as ultimate and proximate analysis (62%wt of C), acid–base properties analysis (pH 9.52), Fourier-transform infrared spectroscopy (the presence of –OH bonds and identification of cellulose, hemicellulose and lignin), Raman spectroscopy (no determination of Id/Ig ratio due to high fluorescence), and nitrogen physisorption (specific surface 50.895 m2·g−1). X-ray fluorescence analysis exhibited the composition of the main compounds in the biochar ash (32.5%wt of Cl and 40.02%wt of Na2O). From the energy generation point of view, the lower heating value of the producer gas achieved 6.53 MJ·m−3 during the co-gasification. The relatively high lower heating value of the producer gas was mainly due to the significant volume fractions of CO (6.5%vol.), CH4 (14.2%vol.), and H2 (4.8 %vol.), while hot gas efficiency accomplished 89.6%.

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Exploration and optimization on thermoelectric conversion of waste heat of blast furnace slag

Li,

Meng,

Miao

et al. 2024

Applied Thermal Engineering

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Energy consumption of two-stage system of biomass pyrolysis and bio-oil reforming to recover waste heat from granulated BF slag

Cited by 4 publications

References 53 publications

Thermodynamic Analysis of Hydrogen Production from Bio-Oil Steam Reforming Utilizing Waste Heat of Steel Slag

Thermodynamic Analysis of Hydrogen Production from Bio-Oil Steam Reforming Utilizing Waste Heat of Steel Slag

Co-Gasification of Pistachio Shells with Wood Pellets in a Semi-Industrial Hybrid Cross/Updraft Reactor for Producer Gas and Biochar Production

Exploration and optimization on thermoelectric conversion of waste heat of blast furnace slag

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