Thermodynamic modeling and analysis of a serial composite process for biomass and coal co-gasification

Xiang, Xi; Gong, Gwo‐Ching; Shi, Ying; Cai, Youchan; Wang, Chenhua

doi:10.1016/j.rser.2017.10.008

Cited by 33 publications

(15 citation statements)

References 35 publications

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“…The product gas that is considered a chemical material mostly demands high H 2 content; the parameters are listed as follows: coal/biomass = 0.25, steam/ coal = 2, and T 1 = 980°C. 23 The calorific value of the product gas when using O 2 and saturated steam as the gasification agent is higher than that using air and saturated steam as the gasification agent. 24 Shayan et al 15 reported that a rise in the gasification temperature led to a reduction in the hydrogen yield.…”

Section: Introductionmentioning

confidence: 98%

“…Xiang et al showed that the calorific value of product gas per hour was the greatest under the conditions of T 1 = 800°C, steam/coal = 2, and coal/biomass = 0.25. The product gas that is considered a chemical material mostly demands high H 2 content; the parameters are listed as follows: coal/biomass = 0.25, steam/coal = 2, and T 1 = 980°C . The calorific value of the product gas when using O 2 and saturated steam as the gasification agent is higher than that using air and saturated steam as the gasification agent .…”

Section: Introductionmentioning

confidence: 99%

“…However, Refs. indicated that an increase in the gasification temperature led to an increase in the hydrogen yield. Introducing steam into gasification is more favorable for the hydrogen yield than pure air …”

Section: Introductionmentioning

confidence: 99%

“…A substantial amount of experimental work has been performed on a downdraft gasifier with steam . Numerous simulation studies have been compared with experimental results . However, there is no unified conclusion.…”

Section: Introductionmentioning

confidence: 99%

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Investigation of biomass (pine wood) gasification: Experiments and Aspen Plus simulation

Huang

Jin

2019

Energy Science & Engineering

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Biomass gasification is currently a hot research topic. To achieve a high hydrogen content in the product gas, the gasification feedstock used in this study is air‐dried pine woodchips. Experiments are performed in a downdraft gasifier by varying the operation parameters of the particle size (60 mesh, 80 mesh, 100 mesh), temperature point (700, 750, 800, 850, 900°C), and steam‐to‐biomass mass (S/B) ratio (0, 0.7, 1.4, 2.1, 2.8). The main effects of particle size, temperature, and S/B ratio on the composition of the product gas are analyzed to predict the optimal operation parameters of biomass feedstock. For pine woodchip gasification, the optimal particle size is 80 mesh or 0.17 mm, the preferred temperature is 850°C, and the optimal S/B ratio is 1.4. Although there is an error between the experiment and the simulation, the difference is not significant. The Aspen Plus model can provide guidance for the gasification of pine woodchips and can be extended to the gasification of other kinds of biomass.

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Section: Introductionmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Investigation of biomass (pine wood) gasification: Experiments and Aspen Plus simulation

Huang

Jin

2019

Energy Science & Engineering

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“…However, it is limited by the rigorous conditions of high H 2 /CO ratios (more than 3.0) and sulfur concentration (less than 10 ppm) . In general, the syngas originated from gasifier contains lower H 2 /CO ratios (0.3–1.3) and a certain amount of H 2 S . Therefore, the removal of sulfur species and increasing H 2 /CO ratios is necessary for syngas treatment process on Ni‐based catalysts.…”

Section: Introductionmentioning

confidence: 99%

MoP/Al₂O₃ as a novel catalyst for sulfur‐resistant methanation

Wang

Zhao

Dajun

et al. 2018

Applied Organom Chemis

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We reported γ‐alumina supported molybdenum phosphide (MoP) catalysts as a novel catalyst for sulfur‐resistant methanation reaction. The precursors of the catalyst were prepared by impregnation method and the effect of reduction temperatures (550 °C, 600 °C, 650 °C) of the precursors for sulfur‐resistant methanation was examined. The results indicated catalyst obtained by lower reduction temperature delivered better sulfur‐resistant methanation performance. Meanwhile, the influence of H2/CO ratios and H2S content was also investigated. The results indicated that high H2/CO ratio and low H2S content was favorable for methanation of MoP catalysts. The catalysts were characterized by N2 adsorption–desorption, XRD, XPS and TEM. The results confirmed that the MoP phase was formed on all the catalysts and the physicochemical properties of the samples influenced the performance for sulfur‐resistant methanation.

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A parametric study through the modelling of hydrothermal gasification for hydrogen production from algal biomass

2021

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Hydrothermal gasification (HTG) is applicable to high moisture content biomass feedstock such as wet microalgae. The key interests of this thermochemical processing are its ability to use whole algae instead of simply lipid extracts and to use a wide range of algal feedstocks. It employs water in the form of a reaction medium to disintegrate biomass into hydrogen gas. The products' composition and yields are a function of process parameters, namely feed concentration, pressure, and temperature. There is very limited literature available on model development to understand the impacts of various input parameters on the products of HTG. This study presents development of a detailed process model for HTG and the illustration of process parameters on the gas product yields. The approach includes developing the system model, identifying the key process parameters in the reactor setup that affect syngas yield, and understanding the overall process in terms of final product yield. A simulation of hydrothermal gasification based on thermodynamic equilibrium is studied. Based on the developed process model about 52.1 t/day of hydrogen can be produced from 500 t/day of wet algal biomass. This shows the potential of large-scale hydrogen production through this process for hydrogen economy.The results from this study could be used by the gas processing industry and policymakers to determine the most feasible means of converting biomassbased resources into gaseous fuels.

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Thermodynamic modeling and analysis of a serial composite process for biomass and coal co-gasification

Cited by 33 publications

References 35 publications

Investigation of biomass (pine wood) gasification: Experiments and Aspen Plus simulation

Investigation of biomass (pine wood) gasification: Experiments and Aspen Plus simulation

MoP/Al₂O₃ as a novel catalyst for sulfur‐resistant methanation

A parametric study through the modelling of hydrothermal gasification for hydrogen production from algal biomass

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Thermodynamic modeling and analysis of a serial composite process for biomass and coal co-gasification

Cited by 33 publications

References 35 publications

Investigation of biomass (pine wood) gasification: Experiments and Aspen Plus simulation

Investigation of biomass (pine wood) gasification: Experiments and Aspen Plus simulation

MoP/Al2O3 as a novel catalyst for sulfur‐resistant methanation

A parametric study through the modelling of hydrothermal gasification for hydrogen production from algal biomass

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MoP/Al₂O₃ as a novel catalyst for sulfur‐resistant methanation