Gasification of Mixed Biomass: Analysis Using Equilibrium, Semi-equilibrium, and Kinetic Models

Mallick, Debarshi; Buragohain, Buljit; Mahanta, Pinakeswar; Moholkar, Vijayanand S.

doi:10.1007/978-981-10-7335-9_9

Cited by 14 publications

(5 citation statements)

References 39 publications

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“…It is used in the simulation of a diversity of processes like fluidized-beds and gasification reactors [10]. The performance analysis of fluidized beds for biomass gasification can be studied using thermodynamic equilibrium or kinetic modeling [11]. Two different thermodynamic models employing Gibbs energy minimization have been used by different researchers [11].…”

Section: Introductionmentioning

confidence: 99%

“…The performance analysis of fluidized beds for biomass gasification can be studied using thermodynamic equilibrium or kinetic modeling [11]. Two different thermodynamic models employing Gibbs energy minimization have been used by different researchers [11]. Thermodynamic equilibrium models do not consider the hydrodynamics of the process.…”

Section: Introductionmentioning

confidence: 99%

“…The kinetic models take into consideration both the hydrodynamic behavior and the reaction kinetics to make it the physically most realistic model. Mallick et al [11] stated that this approach is very important when it comes to designing, improving, and evaluating gasification systems. Most of the studies did not consider tar, or loaded it over other heavy hydrocarbons [12].…”

Section: Introductionmentioning

confidence: 99%

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Simulation of Prosopis juliflora Air Gasification in Multistage Fluidized Process

et al. 2020

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A multistage atmospheric fluidized bed gasifier was developed using the Aspen Plus simulation process. The innovative gasification reactor aims to yield a high-quality product gas as it conducts pyrolysis, combustion, and reduction in different zones. In addition, it uses gas as a heat carrier and has a fluidized char bed in the reduction zone to enhance the in-situ tar reduction. In order to study the feasibility of the gasifier, an evaluation of the product gas and the process efficiency is required. The proposed model was based on the reaction rates and hydrodynamic parameters of the bubbling bed. Four different stages were initially considered in the simulation process: decomposition of the feed, partial volatile combustion, char reduction, and gas solid separation. The gasification reactor was operated over a temperature range of 800–1000 °C and an isothermal combustion reactor was operated at 1000 °C. In addition, the air to biomass mass ratio was varied from 0.2 to 0.5. It has been validated and displayed very good agreement with published data. Effects of gasification reactor temperature, air to biomass ratio, and gasifier dimensions on the composition of product gas were investigated Results showed that the principal component is CO and its concentration in the product gas increases with increase in gasifier temperature but decreases with increasing air to biomass ratio. The results also gave a relatively high value of the lowered gas caloric value and acceptable cold gas efficiency which help the sizing of gasifiers and the choice of optimal operating conditions.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Simulation of Prosopis juliflora Air Gasification in Multistage Fluidized Process

et al. 2020

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“…Given these circumstance, biomass have been consume widely as renewable energy and accounted for about 14% of the total energy consumption (IRENA, 2012). Regarding to this issue, gasification of the biomass seems to be attractive technology that generate the energy-rich gaseous product that can be used further for power generations (Mallick et al, 2018). Gasification play an important role converting the biomass fuel into syngas (H2, CO, CH4 and CO2) or combustible gas mixture (Wasinarom & Charoensuk 2019) in an insufficient oxygen environment.…”

Section: Introductionmentioning

confidence: 99%

Experimental Studies on Gasification Performance of Sawdust and Sawdust Pellet in a Downdraft Biomass Gasifier

Mansur

Faizal

Fazli

et al. 2020

JCEIB

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In this work, a comparative analysis of the gasification process of sawdust (SW) and sawdust pellet (SWP) utilizing a downdraft gasifier was performed. The gasification was conducted in a research-scale fixed-bed gasifier applying air as an oxidizing agent. The comparison between the raw (sawdust, SW) and treated biomass (sawdust pellet, SWP) was investigated for the syngas composition and gasification performance at the fixed condition of gasification temperature at 750 °C and equivalence ratio of 0.25. The gasification performance was tabulated in the form of heating value of the syngas (HHVsyngas), gasification efficiency (ηGE) and carbon conversion efficiency (ηCCE). It was found out that SWP produced the highest H2 and the lowest CO2. Furthermore, SWP also present the better gasification performance than SW. SWP achieved the high HHVsyngas, ηGE, and ηCCE at 4.2152 MJ/Nm3, 24% and 37%, respectively.

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“…Besides, the synergistic effects of macerals during gasification have rarely been investigated. Moreover, the influence of process operating parameters on the synergistic effect has not been discussed although Aspen Plus has been widely applied in the study of solid fuel gasification systems [23][24][25][26].…”

Section: Introductionmentioning

confidence: 99%

Comparative Study of the Gasification of Coal and Its Macerals and Prediction of the Synergistic Effects Under Typical Entrained-Bed Pulverized Coal Gasification Conditions

Jiang

Guo

Luo

et al. 2019

Journal of Energy Resources Technology

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This research is focused on the gasification performance of coal and its corresponding macerals as well as on the interactions among macerals under typical gasification conditions by Aspen Plus modeling. The synergistic coefficient was employed to show the degree of interactions, while the performance indicators including specific oxygen consumption (SOC), specific coal consumption (SCC), cold gas efficiency (CGE), and effective syngas (CO + H2) content were used to evaluate the gasification process. Sensitivity analyses showed that the parent coal and its macerals exhibited different gasification behaviors at the same operating conditions, such as the SOC and SCC decreased in the order of inertinite > vitrinite > liptinite, whereas CGE changed in the order of liptinite > vitrinite > inertinite. The synergistic coefficients of SOC and SCC for the simulated coals were in the range of 0.94–0.97, whereas the synergistic coefficient of CGE was 1.05–1.13. Moreover, it was found that synergistic coefficients of gasification indicators correlated well with maceral contents. In addition, the increase in temperature was found to promote the synergistic coefficients slightly, whilst at an oxygen to coal mass ratio of 0.8 and a steam to coal mass ratio of 0.8, the highest synergistic coefficient was obtained.

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Gasification of Mixed Biomass: Analysis Using Equilibrium, Semi-equilibrium, and Kinetic Models

Cited by 14 publications

References 39 publications

Simulation of Prosopis juliflora Air Gasification in Multistage Fluidized Process

Simulation of Prosopis juliflora Air Gasification in Multistage Fluidized Process

Experimental Studies on Gasification Performance of Sawdust and Sawdust Pellet in a Downdraft Biomass Gasifier

Comparative Study of the Gasification of Coal and Its Macerals and Prediction of the Synergistic Effects Under Typical Entrained-Bed Pulverized Coal Gasification Conditions

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