Characterization of several kinds of coal and biomass for pyrolysis and gasification

Frau, Caterina; Ferrara, Francesca; Orsini, Alessandro; Pettinau, Alberto

doi:10.1016/j.fuel.2014.09.054

Cited by 49 publications

(22 citation statements)

References 23 publications

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“…In Brazil, coal reserves are in the order of 32 Â 109 tons, which are composed mainly of lignite and sub-bituminous coal and largely located in southern Brazil [7,8]. The co-combustion of coal and biomass tends to increase in the upcoming years due to a large demand for fuels that reduce emissions of CO 2 , nitrogen oxides (NO x ) and sulfur oxides (SO x ) [4,9].…”

Section: Introductionmentioning

confidence: 99%

Comparative study on combustion and oxy-fuel combustion environments using mixtures of coal with sugarcane bagasse and biomass sorghum bagasse by the thermogravimetric analysis

Galina¹,

Luna

Arce³

et al. 2019

Journal of the Energy Institute

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Biomass and coal have different physicochemical properties and thermal behavior. During the co-combustion of coal-biomass mixtures, their thermal behavior varies according to the percentage of each fuel in the mixture. Thereby, this research aims to characterize the thermal behavior of mixtures of coal, sugarcane bagasse, and biomass sorghum bagasse as biomass in simulated combustion (O 2 /N 2) and oxy-fuel combustion (O 2 /CO 2) environments. Experiments have been performed in duplicate on a thermogravimetric analyzer at heating rate of 10 C/min. A uniform granulometry was considered for all materials (63 mm) in order to ensure a homogeneous mixture. Four biomass percentages in the mixture (10, 25, 50 and 75%) have been studied. Based on thermogravimetric (TG) and thermogravimetric (DTG) analyses, parameters such as combustion index, synergism, and activation energy have been determined, as well as the combustion environment influence on these parameters. The results indicate that, although sugarcane bagasse has the lowest activation energy, the thermal behavior of both types of biomass is similar. Thus, biomass sorghum bagasse can be used as an alternative biomass to supply the power required during sugarcane off-season. For both mixtures, optimal results were obtained at 25% of biomass. By analyzing the environment influence on combustion behavior, the results indicate that when N 2 is replaced with CO 2 , it is observed an increase in reaction reactivity, a higher oxidation rate of materials and an improvement in evaluated parameters.

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Section: Introductionmentioning

confidence: 99%

Comparative study on combustion and oxy-fuel combustion environments using mixtures of coal with sugarcane bagasse and biomass sorghum bagasse by the thermogravimetric analysis

Galina¹,

Luna

Arce³

et al. 2019

Journal of the Energy Institute

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“…The cellulose and hemicellulose content was obtained according to the SCAM-CM 71:09 procedure by hydrolysis with H 2 SO 4 , followed by the measurement of carbohydrates through high performance liquid chromatography (HPLC) system equipped with refractive index detector and the following columns: Shodex sugar SP0810 or Biorad Aminex HPX-87P column (or equivalent) with ionic form H + /CO 3 deashing guard column and Biorad Aminex HPX-87H column (or equivalent) with corresponding guard column. The lignin content was determined by extraction of the solid samples with ethanol according to TAPPI 204 standard and then subjecting the sample free of extractive components, according to the TAPPI 222 standard, to two acid hydrolysis to finally dry, weigh, and measure the lignin using a UV spectrophotometer [32].…”

Section: Discussionmentioning

confidence: 99%

Evaluation of Press Mud, Vinasse Powder and Extraction Sludge with Ethanol in a Pyrolysis Process

et al. 2019

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The effluents of the sugar and bio-ethanol industry, mainly vinasse as well as lignocellulosic waste, are produced in high volumes. Therefore, their treatment and valorization would reduce the environmental impact and make this industry more productive and competitive. The purpose of this study was to determine the potential use of press mud (lignocellulosic waste), vinasse powder, and vinasse sludge from an extraction process with ethanol, as raw materials for conventional pyrolysis evaluating the physicochemical characteristics that affect this thermochemical process, such as calorific power, density, ash content, volatile material, moisture and nitrogen, sulfur, carbon and hydrogen content, thermogravimetric profile, and quantification of lignin cellulose and hemicellulose. The batch pyrolysis experiments showed that all three wastes could be converted successfully into more valuable products. The powder vinasse led to the formation of the lowest content of bio-char (42.7%), the highest production of volatiles (61.6 wt.%), and the lowest ash content (20.5 wt.%). Besides, it showed the high heating value of 15.63 MJ/kg. Meanwhile, the extraction sludge presented the highest liquid yield (32%) with the lowest gas formation (18.2 wt.%) and the lowest heating value of 8.57 MJ/kg. Thus, the sludge could be a good feedstock for production of bio-oil and bio-char.

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“…For example, Sulcis coal in Italy has $5 to 9 wt% of sulfur content, Hungarian brown coal has $3 to 5 wt%, and Inner Mongolia-Chinese coal has up to 18% of sulfur content [40]. All these considerations have pushed research and development for a captive use of H 2 S and CO 2 , to improve the accounting of these by-products.…”

Section: The Acid Gas To Syngas Tm (Ag2s Tm ) Technologymentioning

confidence: 99%

“…Coal and biomass are very difficult to describe in terms of structure and molecular composition. The available information is usually limited to the elemental composition in terms of C/H/N/S/O [40]. Therefore, biomass and coal characterization require an empirical approach.…”

Section: Characterization Of the Solid Fuelmentioning

confidence: 99%

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Acid Gas to Syngas (AG2S™) technology applied to solid fuel gasification: Cutting H2S and CO2 emissions by improving syngas production

Bassani

Pirola

Maggio³

et al. 2016

Applied Energy

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Characterization of several kinds of coal and biomass for pyrolysis and gasification

Cited by 49 publications

References 23 publications

Comparative study on combustion and oxy-fuel combustion environments using mixtures of coal with sugarcane bagasse and biomass sorghum bagasse by the thermogravimetric analysis

Comparative study on combustion and oxy-fuel combustion environments using mixtures of coal with sugarcane bagasse and biomass sorghum bagasse by the thermogravimetric analysis

Evaluation of Press Mud, Vinasse Powder and Extraction Sludge with Ethanol in a Pyrolysis Process

Acid Gas to Syngas (AG2S™) technology applied to solid fuel gasification: Cutting H2S and CO2 emissions by improving syngas production

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