Hydrogen and power co-production from autothermal biomass sorption enhanced chemical looping gasification: Thermodynamic modeling and comparative study

Liu, Guicai; Zhao, Ya; Heberlein, Stephan; Veksha, Andrei; Giannis, Apostolos; Chan, Wei Ping; Lim, Teik Thye; Lisak, Grzegorz

doi:10.1016/j.enconman.2022.116087

Cited by 19 publications

(6 citation statements)

References 51 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The biomass gasification reactions include moisture evaporation, dry biomass pyrolysis, and char gasification. The moisture evaporation rate is calculated according to Equation (10). The pyrolysis kinetics is calculated with Equation (11).…”

Section: The Reaction Kineticsmentioning

confidence: 99%

“…Liu [10] did the thermodynamic modeling of biomass sorption-enhanced chemical looping gasification, and the energy efficiency of this technology was found to be 64.6%. Pröll [11] studied the H 2 -rich syngas production by selective CO 2 removal during biomass gasification in a 100 kW DFGB using the thermodynamic equilibrium approach and found that H 2 volume fraction in the dry syngas could reach 65-75%, and CO 2 volume fraction was in the range of 6-13%.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Numerical Research on Biomass Gasification in a Quadruple Fluidized Bed Gasifier

et al. 2022

View full text Add to dashboard Cite

Utilization of bioenergy with carbon capture can realize carbon-negative syngas production. The quadruple fluidized bed gasifier (QFBG) integrates a chemical looping oxygen generation process and a dual fluidized bed gasifier with limestone as bed material. It is one promising device that can convert biomass to H2-rich syngas whilst capturing CO2 with little energy penalty. However, experimental or numerical simulation of QFBG is rarely reported on due to its complex structure, hindering the further commercialization and deployment of QFBG. In this work, a new computational fluid dynamics (CFD) solver is proposed to predict the complex physicochemical processes in QFBG based on the multi-phase particle in cell (MPPIC) methodology with the assistance of the open source software, OpenFOAM. The solver is first validated against experimental data in terms of hydrodynamics and reaction kinetics. Then, the solver is used to investigate the QFBG property. It is found that the QFBG can operate stably. The cold gas efficiency, H2 molar fraction, and CO2 capture rate of the QFBG are predicted to be 87.2%, 93.3%, and 90.5%, respectively, which is promising. It is believed that the solver can give reliable predictions for similar fluidized bed reactors.

show abstract

Section: The Reaction Kineticsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Numerical Research on Biomass Gasification in a Quadruple Fluidized Bed Gasifier

et al. 2022

View full text Add to dashboard Cite

show abstract

“…Different from traditional gasification, CLG uses oxygen carriers (OCs) to transfer oxygen and heat between the fuel reactor and the air reactor. The lattice oxygen in oxygen carriers is regarded as the oxidized medium for gasification of solid fuel in CLG. , Thus, the energy input for oxygen or steam production is not required in the CLG process, reducing the cost of syngas production . Besides, the syngas with a high heating value can be obtained due to the dilution of nitrogen in air can be avoided. , An important consideration in the CLG process is the selection of OCs with high redox reactivity.…”

Section: Introductionmentioning

confidence: 99%

“…The lattice oxygen in oxygen carriers is regarded as the oxidized medium for gasification of solid fuel in CLG. 7,8 Thus, the energy input for oxygen or steam production is not required in the CLG process, reducing the cost of syngas production. 9 Besides, the syngas with a high heating value can be obtained due to the dilution of nitrogen in air can be avoided.…”

Section: Introductionmentioning

confidence: 99%

Effect of Nickel-Modified Hematite on the Conversion of Volatile and Char during Chemical Looping Gasification of Wood-Based Panel Waste

Chen,

Zhang,

Lin

et al. 2024

Energy Fuels

View full text Add to dashboard Cite

Nickel modification is a promising method to improve the reactivity of hematite in chemical looping gasification (CLG), but the effect of nickel-modified hematite on the conversion of volatiles and char remained unclear. In this work, thermogravimetric and CLG experiments of wood-based panel waste were applied to explore the conversion of volatile and char over nickel-modified hematite. Compared with original hematite, Ni-modified hematite exhibited higher weight loss during thermogravimetric experiments under a H 2 atmosphere (29.41− 31.00%), indicating that the nickel modification improved the oxidation capacity of hematite. The higher oxidation capacity of nickel-modified hematite can further promote the conversion of C/ H element in char, leading to a higher weight loss of wood-based panel waste over nickel-modified hematite (54.14−57.79%) than that over original hematite (52.48%) in thermogravimetric experiments. However, the reaction between oxygen carrier and wood-based panel waste concentrated in the char conversion stage, resulting in the negligible inhibition effect of nickel-modified hematite on HCN and NH 3 emission during the devolatilization stage. The total gas yield, valid gas yield, and carbon conversion rate in CLG over OC-Ni10 were higher than those over original hematite. Overall, the Ni-modified hematite can further promote the char conversion of WBPW to syngas during the CLG process.

show abstract

“…The authors also performed an exergy analysis and concluded that maximum exergy loss occurs in the FR and AR. Autothermal operation of sorption enhanced CLG for coproduction of H 2 , and power was analyzed by Liu et al 10 for fixed carbon conversions. The optimal temperature and pressure of the carbonator were identified.…”

Section: Introductionmentioning

confidence: 99%

Thermodynamic Analysis of Optimal Performance of Three Modes of Operation of Autothermal Chemical Looping Gasification

Tirupathinaidu

Renganathan

2023

Ind. Eng. Chem. Res.

View full text Add to dashboard Cite

A chemical looping gasification process comprising of fuel and air reactors (FR and AR) is thermodynamically analyzed under autothermal conditions. The analysis takes into account the incomplete carbon conversion in the FR. Depending on how the unburnt carbon in the FR is processed, 3 modes of operation are analyzed viz. (1) sending unburnt carbon to the AR, (2) removal of unburnt carbon from the process, and (3) recycle of unburnt carbon to the FR. Autothermal operating conditions are identified for each mode of operation. It has been shown that, for optimal performance, while mode 1 and mode 2 have to be operated with minimum flow of oxygen carrier (OC) and medium air flow, mode 3 has to be operated with maximum OC flow and minimum air flow. Performance results for mode 1 of operation at the optimal operation point are generalized to any solid fuel.

show abstract

Hydrogen and power co-production from autothermal biomass sorption enhanced chemical looping gasification: Thermodynamic modeling and comparative study

Cited by 19 publications

References 51 publications

Numerical Research on Biomass Gasification in a Quadruple Fluidized Bed Gasifier

Numerical Research on Biomass Gasification in a Quadruple Fluidized Bed Gasifier

Effect of Nickel-Modified Hematite on the Conversion of Volatile and Char during Chemical Looping Gasification of Wood-Based Panel Waste

Thermodynamic Analysis of Optimal Performance of Three Modes of Operation of Autothermal Chemical Looping Gasification

Contact Info

Product

Resources

About