Study of the effects of operating factors on the resulting producer gas of oil palm fronds gasification with a single throat downdraft gasifier

Guangul, Fiseha M.; Sulaiman, Shaharin Anwar; Ramli, Anita

doi:10.1016/j.renene.2014.07.022

Cited by 59 publications

(26 citation statements)

References 25 publications

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“…The highest heating value of syngas was 3.78 MJ/Nm 3 with the cold gas efficiency of 40%, which was obtained at an optimum condition of ER (equivalence ratio) ¼ 0.24 and an air velocity of 0.19 m/s. A downdraft gasifier was investigated to understand the effects of operating conditions on the syngas using an oil palm frond feedstock [14]. A pilot scale fluidized bed gasifier was used with sorghum, cotton gin trash and cattle manure, which produced on average 4.2 MJ/Nm 3 [15].…”

Section: Introductionmentioning

confidence: 99%

Enriched-air fluidized bed gasification using bench and pilot scale reactors of dairy manure with sand bedding based on response surface methods

Nam

Maglinao

Capareda

et al. 2016

Energy

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Section: Introductionmentioning

confidence: 99%

Enriched-air fluidized bed gasification using bench and pilot scale reactors of dairy manure with sand bedding based on response surface methods

Nam

Maglinao

Capareda

et al. 2016

Energy

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“…The results showed that the heating value decreases with an increase in moisture content and for a moisture content of 15 percent, the heating value of the gas is only between 4 and 5 MJ/m 3 . In experiments conducted by Guangul et al [6], the concentrations of carbon monoxide, CO, methane, CH 4 and hydrogen gas, H 2 in producer gas obtained by gasification were all reduced by an increase in the moisture content of feedstock OPF from 10 percent to 20 percent. The study conducted by Sulaiman et al [7] confirms the work conducted in [5] and [6].…”

Section: Introductionmentioning

confidence: 94%

“…In experiments conducted by Guangul et al [6], the concentrations of carbon monoxide, CO, methane, CH 4 and hydrogen gas, H 2 in producer gas obtained by gasification were all reduced by an increase in the moisture content of feedstock OPF from 10 percent to 20 percent. The study conducted by Sulaiman et al [7] confirms the work conducted in [5] and [6]. The performance of the gasifier drops due to a rising percentage of moisture content in the feedstock.…”

Section: Introductionmentioning

confidence: 94%

Syngas Performance of Biomass Gasification Using Oil Palm Fronds

Hashim¹,

Rosmin²,

Musta’ámal³

et al. 2017

IJPER

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This paper presents the syngas performance of oil palm fronds (OPF) using a downdraft gasification method. So far, no biogas-OPF based power plant project has been developed in Malaysia even though the production of OPF is enormous. Initially, the empirical formula of OPF is determined before the gasification system can be modeled. The model of the gasification system in a downdraft gasifier is based on four zones; the drying zone, the pyrolysis zone, the oxidation zone and the reduction zone. The main advantage of the proposed method in this work is that the chemical reactions that occur in each zone are balanced using "kilogram" terms, thus eliminating the typical "mass" equations. Using "kilogram" terms overcomes the ambiguous process of chemical reaction during mole separation in each sub-model. In this study, the composition, calorific value (CV) and energy of syngas produced from OPF downdraft gasification are analyzed using Matlab/Simulink software. The model also takes into consideration the OPF moisture content as well as air fuel ratio. It is found that the CV of syngas reduced from 8.5 MJ/m 3 to 6.387 MJ/m 3 and the energy reduced from 2.224 kWh/m 3 to 1.774 kWh/m 3 as the moisture content increased from 5% to 20%. The CV also reduced from 8.132 MJ/m 3 to 4.137 MJ/m 3 and the energy reduced from 2.259 kWh/m 3 to 1.149 kWh/m 3 when air fuel ratio increased from 0.26 to 0.6.

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“…(2) the product gas goes through the biochar deposit before leaving the reactor and may be contaminated by particulates. As a result, the feedstocks for downdraft gasifiers should have low moisture (< 25 wt.%) and ash (< 6 wt.%) contents (Table 1) (Guangul et al, 2014;Vera et al, 2018). Feedstocks such as raw food waste, sewage sludge and animal manure with a moisture content well above 50 wt.% (You et al, 2016;Yuan et al, 2017a), and rick husk, palm mesocarp fibers, and wheat straw with an ash content above 10 wt.% (Huang et al, 2016;Pode, 2016;You et al, 2017b) are not suitable for a downdraft fixed bed gasifier.…”

Section: (B) Downdraftmentioning

confidence: 99%

Towards practical application of gasification: a critical review from syngas and biochar perspectives

You

Tsang

et al. 2018

Critical Reviews in Environmental Science and Technology

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Syngas and biochar production are mainly influenced by temperature, feedstock properties, gasifying agent, pressure, and the mass ratio between gasifying agent and feedstock with temperature being the most significant factor. Increasing temperature generally promotes syngas production while suppressing biochar production. The selection of gasifiers (fixed bed, fluidized bed, and entrained flow) is highly dependent on scale requirement (e.g., volume of feedstock and energy demand), feedstock characteristics (e.g., moisture and ash content), and the quality of syngas and biochar. Updraft fixed bed gasifiers are suitable for the feedstocks with a moisture content up to 50 wt.%. High ash feedstocks such as Indian coal, dried sewage sludge, and municipal solid waste that are not suitable for fixed bed gasifiers, have been successfully gasified in bubbling fluidized bed reactors. Woody biomass is not suitable for entrained flow gasifiers unless specialized feeding methods are employed such as wood torrefaction and grinding followed by the existing feeding methods for pulverized coals, biomass-oil biochar slurry preparation followed by pumping, wood or torrefied wood slurry preparation followed by pumping, etc. Syngas and biochar can potentially be contaminated by NH3, H2S, and tar, which can be removed using catalysts (e.g., Ni-based), metal oxides-based sorbents, and thermal and catalytic cracking methods. Existing syngas and biochar upgrading methods suffered from various problems such as economic infeasibility, limited productivity, and fouling, and future syngas and biochar upgrading methods should be aimed to have the features of reliability, security, affordability, and sustainability, towards the practical, largescale production of syngas-and biochar-based products. One potential solution is to develop integrated systems by combining biochar upgrading and application with syngas upgrading, which warrants an integrated perspective based on both life cycle assessment and economic analysis.

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Study of the effects of operating factors on the resulting producer gas of oil palm fronds gasification with a single throat downdraft gasifier

Cited by 59 publications

References 25 publications

Enriched-air fluidized bed gasification using bench and pilot scale reactors of dairy manure with sand bedding based on response surface methods

Enriched-air fluidized bed gasification using bench and pilot scale reactors of dairy manure with sand bedding based on response surface methods

Syngas Performance of Biomass Gasification Using Oil Palm Fronds

Towards practical application of gasification: a critical review from syngas and biochar perspectives

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