Gasification of palm empty fruit bunch in a bubbling fluidized bed: A performance and agglomeration study

Lahijani, Pooya; Zainal, Zainal Alimuddin

doi:10.1016/j.biortech.2010.09.101

Cited by 219 publications

(119 citation statements)

References 32 publications

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“…water gas reaction and Boudouard reaction) [19]. As shown in Table 1 components also lead to enhanced H2 yield at higher catalytic reforming temperatures [26].…”

Section: Resultsmentioning

confidence: 99%

Pyrolysis/reforming of rice husks with a Ni–dolomite catalyst: Influence of process conditions on syngas and hydrogen yield

Waheed

2016

Journal of the Energy Institute

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The influence of process conditions on the production of syngas and H2 from biomass in the form of rice husks was investigated using a two-stage pyrolysis-catalytic reforming reactor.The parameters investigated were, reforming temperature, steam flow rate and biomass particle size and the catalyst used was a 10 wt.% Ni-dolomite catalyst. Biomass was pyrolysed in the first stage, and the product volatiles were reformed in the second stage in the presence of steam and the Ni-dolomite catalyst. Increase in catalyst temperature from 850 °C to 1050 °C marginally improved total syngas yield. However, H2 yield was increased from 20.03 mmoles g -1 at 850 °C to 30.62 mmoles g -1 at 1050 °C and H2 concentration in the product gas increased from 53.95 vol.% to 65.18 vol.%. Raising the steam flow rate increased the H2 yield and H2 gas concentration. A significant increase in H2:CO ratio along with a decrease in CO:CO2 ratio suggested a change in the equilibrium of the water gas shift reaction towards H2 formation with increased steam flow rate. The influence of particle size on H2 yield was small showing an increase in H2 production when the particle size was reduced from 2.8 -3.3 to 0.2 -0.5 mm.

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“…water gas reaction and Boudouard reaction) [19]. As shown in Table 1 components also lead to enhanced H2 yield at higher catalytic reforming temperatures [26].…”

Section: Resultsmentioning

confidence: 99%

Pyrolysis/reforming of rice husks with a Ni–dolomite catalyst: Influence of process conditions on syngas and hydrogen yield

Waheed

2016

Journal of the Energy Institute

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“…Accordingly, a wide number of studies have examined the conversion efficiency of various combination of catalysts, such as zeolites, metallic oxides, microporous and mesoporous surfaces, etc., as well as different reactor designs (Kelly-Yong et al, 2007; Lahijani and Zainal, 2011; Mohammed et al, 2011). Lahijani and Zainal (2011) in their study achieved a carbon conversion efficiency of 93% and 85% for EFB and sawdust biomass, respectively, in a bubbling fluidized bed reactor setup. For EFB, particle agglomeration was a major problem at higher reactor temperatures (>1000 °C).…”

Section: Gasificationmentioning

confidence: 91%

Advances in biofuel production from oil palm and palm oil processing wastes: A review

Kurnia¹,

Jangam²,

Akhtar³

et al. 2016

Biofuel Res. J.

141

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“…Bed temperature is one of the most significant parameters affecting all the chemical reactions included in the combustion and gasification process. In order to simplify the gasification mechanism, the proposed reaction scheme was used to explain biomass gasification in the fluidized bed as follows [15,16]:…”

Section: Introductionmentioning

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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Gasification of palm empty fruit bunch in a bubbling fluidized bed: A performance and agglomeration study

Cited by 219 publications

References 32 publications

Pyrolysis/reforming of rice husks with a Ni–dolomite catalyst: Influence of process conditions on syngas and hydrogen yield

Pyrolysis/reforming of rice husks with a Ni–dolomite catalyst: Influence of process conditions on syngas and hydrogen yield

Advances in biofuel production from oil palm and palm oil processing wastes: A review

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

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