Assessing the gasification performance of biomass: A review on biomass gasification process conditions, optimization and economic evaluation

Ahmad, A.; Zawawi, Norfadhila Abdullah; Kasim, Farizul Hafiz; Inayat, Abrar; Khasri, Azduwin

doi:10.1016/j.rser.2015.09.030

Cited by 412 publications

(158 citation statements)

References 45 publications

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“…The highest η values at T = 750 °C of AROK and ARTOK were 34.23 and 55.03% respectively. The higher temperatures contributed to lower concentration of char and heavy tars and led to higher gas yield due to release of more volatiles [55].…”

Section: Effect Of Bed Temperature On Hhv and Cold Gas Efficiencymentioning

confidence: 99%

Kinetics and Performance of Raw and Torrefied Biomass in a Continuous Bubbling Fluidized Bed Gasifier

Al-Farraji

Marsh

Steer

et al. 2017

Waste Biomass Valor

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This paper is an experimental study of the kinetics of gasification of olive kernel by using a thermogravimetric fluidized bed reactor technique. Gasification of 'as received' and torrefied olive kernels were investigated in a lab-scale bubbling fluidized bed gasifier, operating at up to 3.2 kg/h. The effect of bed temperature between 550 and 750 °C in 50 °C increments on the gasification product gas at mass-based equivalence ratios of 0.15 and 0.2 was studied. To explore the potential of torrefied biomass, the gasification results were compared to that of the 'as received' biomass. The product gas from torrefied biomass produced higher H 2 , CO and CH 4 concentrations at identical oxidant flow rates in addition to higher cold gas efficiency and higher product gas heating value. The influence of equivalence ratio in gasification was also investigated at reactor temperatures of 750 °C and five equivalence ratios (0.15, 0.2, 0.25, 0.3, and 0.35). The results revealed that the torrefied biomass has the highest HHV at an equivalence ratio of 0.2 with a value of 6.09 MJ/Nm 3 , while 'as received' biomass 4.72 MJ/Nm 3 . Kinetic experiments under isothermal conditions were performed for the gasification of the materials in continuous mode. A mass balance model was successfully used to provide the capability of separately determining the rate constant of the reactions taking place. The kinetic parameters were calculated by a first order reaction model giving activation energies for 'as received' olive kernels of 84 kJ/mol and for torrefied olive kernels of 106 kJ/mol.

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Section: Effect Of Bed Temperature On Hhv and Cold Gas Efficiencymentioning

confidence: 99%

Kinetics and Performance of Raw and Torrefied Biomass in a Continuous Bubbling Fluidized Bed Gasifier

Al-Farraji

Marsh

Steer

et al. 2017

Waste Biomass Valor

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“…Most studies have been focused on the effects of operating conditions in the gasification process without concern for the energy self-sufficiency in the steam gasification process. The advantages of an energy self-sufficient system can also be the minimum quantity of energy required, the maximum yields operating efficiency, and the minimum production time [20]. Therefore, the energy self-sufficiency of the steam gasification process is the focus in this research.…”

Section: Reactionmentioning

confidence: 99%

Simulation of Steam Gasification in a Fluidized Bed Reactor with Energy Self-Sufficient Condition

Suwatthikul¹,

Limprachaya²,

Kittisupakorn³

et al. 2017

Energies

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Abstract:The biomass gasification process is widely accepted as a popular technology to produce fuel for the application in gas turbines and Organic Rankine Cycle (ORC). Chemical reactions of this process can be separated into three reaction zones: pyrolysis, combustion, and reduction. In this study, sensitivity analysis with respect to three input parameters (gasification temperature, equivalence ratio, and steam-to-biomass ratio) has been carried out to achieve energy self-sufficient conditions in a steam gasification process under the criteria that the carbon conversion efficiency must be more than 70%, and carbon dioxide gas is lower than 20%. Simulation models of the steam gasification process have been carried out by ASPEN Plus and validated with both experimental data and simulation results from Nikoo & Mahinpey (2008). Gasification temperature of 911 • C, equivalence ratio of 0.18, and a steam-to-biomass ratio of 1.78, are considered as an optimal operation point to achieve energy self-sufficient condition. This operating point gives the maximum of carbon conversion efficiency at 91.03%, and carbon dioxide gas at 15.18 volumetric percentages. In this study, life cycle assessment (LCA) is included to compare the environmental performance of conventional and energy self-sufficient gasification for steam biomass gasification.

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“…But the cost of production of oxygen in separate units Other important parameters for consideration are residence time of waste, devolatilization, equivalence ratio, cold gas efficiency (CGE), hot gas efficiency (HGE) carbon conversion efficiency, etc. (Ahmad et al 2016). However, these parameters do not necessarily provide an exhaustive summary of the quality of gas produced by the process.…”

Section: Gasificationmentioning

confidence: 99%

Exploring untapped energy potential of urban solid waste

Vaish

Srivastava

Singh

et al. 2016

Energ. Ecol. Environ.

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There is continuous increase in quantum and variety of waste being generated by anthropogenic activities. Burgeoning amount of waste being generated has potential to harm the environment and human health. Aggravating the problem, ever-increasing energy demand is putting strain on the non-renewable sources of energy and there is huge gap between the demand and supply of energy. This has led the scientific communities to adopt innovative methods to reduce, reuse and recycle them. Therefore, there is an urgent need to minimize the quantity of waste and meet the current demand profile of energy is required; technologies to recover energy from waste can play a vital role in substantial energy recovery and reduction in waste for final disposal; in addition to meet the rising energy requirement. Generating power from waste has greatly reduced the environmental impact and dependency on fossil fuels for electricity generation. Economically also it is an optimal solution for recovery of heat and power from waste. This paper gives an overview of energy potential stored in waste, major available waste-to-energy technologies and also strategic action plan for implementation of these technologies.

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Assessing the gasification performance of biomass: A review on biomass gasification process conditions, optimization and economic evaluation

Cited by 412 publications

References 45 publications

Kinetics and Performance of Raw and Torrefied Biomass in a Continuous Bubbling Fluidized Bed Gasifier

Kinetics and Performance of Raw and Torrefied Biomass in a Continuous Bubbling Fluidized Bed Gasifier

Simulation of Steam Gasification in a Fluidized Bed Reactor with Energy Self-Sufficient Condition

Exploring untapped energy potential of urban solid waste

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