Investigation of fuel gas generation in a pilot scale fluidized bed autothermal gasifier using rice husk

Karmakar, Malay; Mandal, Jiten; Haldar, S.; Chatterjee, Pradip K.

doi:10.1016/j.fuel.2013.03.045

Cited by 48 publications

(45 citation statements)

References 18 publications

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“…The carbon conversion rate (CCR) represents the carbon conversion from biomass into producer gas during gasification process which was calculated using Eq. 4, where C% is the carbon elementary fraction in the RH (Karmakar et al 2013). …”

Section: Investigating Gasification Related Variables Definitionmentioning

confidence: 99%

Gasification of Rice Husk in a Downdraft Gasifier: The Effect of Equivalence Ratio on the Gasification Performance, Properties, and Utilization Analysis of Byproducts of Char and Tar

Zhao

et al. 2015

BioResources

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Rice husks (RH) are a potential biomass source for bio-energy production in China, such as bio-gas production by gasification technology. In this paper, a bench-scale downdraft fixed bed gasifier (DFBG) and a tar sampling system were designed. The effect of equivalence ratio (ER) on gasification performance in terms of the temperature in the gasifier, the composition distribution of the producer gas, and the tar content in the producer gas was studied. The maximum lower heating value of 4.44 MJ/Nm 3 , minimum tar content of 1.34 g/Nm 3 , and maximum cold gas efficiency of 50.85% were obtained at ER of 0.211. In addition, the characteristics of gasification byproducts, namely bio-char and bio-tar, were analyzed. The proximate and ultimate analysis (especially of the alkali metal), the surface morphology, the surface area, and the pore size distribution of the rice husk char (RHC) were obtained by the use of X-ray fluorescence (XRF) and scanning electron microscopy (SEM), as well as by using the Brunauer-Emmett-Teller (BET) method. The components of light tar and heavy tar were obtained by using gas chromatography-mass spectrometry (GC-MS).

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Section: Investigating Gasification Related Variables Definitionmentioning

confidence: 99%

Gasification of Rice Husk in a Downdraft Gasifier: The Effect of Equivalence Ratio on the Gasification Performance, Properties, and Utilization Analysis of Byproducts of Char and Tar

Zhao

et al. 2015

BioResources

View full text Add to dashboard Cite

show abstract

“…Hydrolysis can reduce cellulose to a cellobiose repeating unit, C 12 H 22 O 11 , and ultimately to glucose, C 6 H 12 O 6 . Heating values for cellulose may be slightly different based upon the feedstock [8,9]. Hemicellulose consists of short, highly branched chains of sugars.…”

Section: Analysis Of Biomassmentioning

confidence: 99%

“…Lignin is the major non-carbohydrate, polypenolic structural constituent of wood and other native plant materials that encrusts the cell walls and helps in cementing the cells all together. It is a highly polymeric substance, with a complex, crosslinked, highly aromatic structure and having the molecular weight of about 10 000 derived principally from coniferyl alcohol (C 10 H 12 O 3 ) by extensive condensation and polymerization [1,8,9].…”

Section: Analysis Of Biomassmentioning

confidence: 99%

“…Proximate analysis separates the products into four groups: (i) moisture, (ii) volatile matter, consisting of gases and vapors driven off during torrefaction or pyrolysis, (iii) fixed carbon, the non-volatile fraction of biomass, and (iv) ash, the inorganic residue that remains after combustion. The remaining fraction is a mixture of solid carbon (fixed carbon) and mineral matter (ash), which can be distinguished by further heating the sample in the presence of oxygen; the carbon is converted to CO 2 and only leaving the ash [9]. Table 1.5 [9] provides both the proximate and ultimate analysis (dry basis) for a wide range of biomass materials.…”

Section: Proximate and Ultimate Analysis Of Biomassmentioning

confidence: 99%

“…The remaining fraction is a mixture of solid carbon (fixed carbon) and mineral matter (ash), which can be distinguished by further heating the sample in the presence of oxygen; the carbon is converted to CO 2 and only leaving the ash [9]. Table 1.5 [9] provides both the proximate and ultimate analysis (dry basis) for a wide range of biomass materials. Ultimate analysis deals with the determination of the carbon and hydrogen in the material, are found in the gaseous products after combustion.…”

Section: Proximate and Ultimate Analysis Of Biomassmentioning

confidence: 99%

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