Oxidative pyrolysis of mallee wood biomass, cellulose and lignin

Jiang, Shengjuan; Hu, Xun; Wu, Liping; Zhang, Lei; Wang, Shuai; Li, Tingting; Xia, Daohong; Li, Chun‐Zhu

doi:10.1016/j.fuel.2017.12.075

Cited by 49 publications

(18 citation statements)

References 43 publications

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“…During the co-combustion process of the blended samples, more free radicals are produced than during the combustion process of coal, which accelerates combustion. 48 The other reason is that the synergetic effects are related to the energy supply during the combustion process. When the mixing ratio of the blended samples is low, the heat release during the co-combustion process is low.…”

Section: Results and Discussionmentioning

confidence: 99%

Kinetic and Synergetic Effect Analysis of the Co-Combustion of Coal Blended with Polyurethane Materials

et al. 2020

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The synergetic effects during the co-combustion of coal blended with polyurethane are researched by thermogravimetric experiments. The mixing ratio of polyurethane to coal affects the oxygen absorption and pyrolysis. According to the synergetic effects, the co-combustion process can be divided into three stages. In the first stage, the synergetic effects are notable and the main reactions are pyrolysis and oxygen absorption. In the second stage, there are almost no synergetic effects and the main reaction is combustion of fixed carbon. In the third stage, there are some synergetic effects because the combustion residues agglomerate. The synergetic effects during co-combustion are influenced by two factors, energy and free radicals. When the mixing ratio is lower than 1:15, the synergetic effects are expressed as inhibitory effects, and the pyrolysis of polyurethane competes with the oxygen absorption of coal. The calorific values of the samples are lower and their ignition temperature and activation energy in the early stage of co-combustion are higher than those of coal. When the mixing ratio is higher than 1:15, the synergetic effects expressed as promoting effects.

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Section: Results and Discussionmentioning

confidence: 99%

Kinetic and Synergetic Effect Analysis of the Co-Combustion of Coal Blended with Polyurethane Materials

et al. 2020

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“…The highest concentration of furfural compounds was 9.55% produced after 120 minutes at 280 o C. The highest concentration of phenol compounds was 8.70% after 120minute pyrolysis at 280 o C. Phenol is a decomposition product of lignin compounds in biomass that is decomposed at 200 -500 o C [19], [7]. Moreover, lignin is also decomposed to form phenolic ester compounds such as guaiacol and syringol [20].…”

Section: Gc-ms To Identify Chemical Composition Of Cinnamon Liquid Smokementioning

confidence: 99%

“…Liquid smoke produced from pyrolysis of hardwoods produces a more distinctive scent, has a richer aromatic compound content and more acidic compounds compared to that from softwood or a resinous wood [4], [6], [7]. Pyrolysis of wood produces charcoal, tar, and non-condensable gas along with the liquid smoke.…”

Section: Introductionmentioning

confidence: 99%

The Rate of Formation of Main Compounds in the Pyrolysis of Cinnamon Wood

Putri¹,

Kasim²,

Emriadi³

et al. 2021

Int. J. Adv. Sci. Eng. Inf. Technol.

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Cinnamon wood has chemical and physical properties that can be optimized for use other than firewood. Lignocellulose compounds and a high density of raw materials would produce beneficial new compounds through pyrolysis. This research aims to make liquid smoke from cinnamon using pyrolysis and identify the concentration of the chemical compounds in liquid smoke and the rate of formation of the main compounds of liquid smoke. The Pyrolysis process was done twice, and the results were observed every 30 minutes. Chemical compounds of liquid smoke were analyzed using Gas Chromatography-Mass Spectroscopy (GC-MS). The crystal structure of charcoal produced from pyrolysis was analyzed using an X-ray diffractometer (XRD). The results showed that the liquid smoke, tar, charcoal, and the content lost after 150-minutes of pyrolysis was 28.94; 3.6; 42.92, and 24.54 %, respectively. Chromatography yielded ten peaks corresponding to compounds present in each stage of the process after 30 mins of pyrosis up to 150 mins. GC-MS analysis showed five chemical compounds, methanol, acetic acid, furfural, phenol, and guaiacol, as always present during the pyrolysis processes. Methanol, acetic acid, and phenol reached their highest concentration at the end of pyrolysis. The rate of formation of these compounds, particularly the methanol, continuously increased during the pyrolysis process. The length of the pyrolysis was proportional to the speed of methanol formation and the total yield.

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“…Results of the experiments suggest that product gas recycling affects the biocrude and charcoal yields. Some authors studied the influence of an oxidative environment on the pyrolysis product yields, and reported contradicting results [31,38,39]. For example, Amutio et alreported that biocrude yield increased, while charcoal yield decreased, the more O 2 is added to the reaction environment during the flash pyrolysis of forest pinewood waste in a conical spouted bed reactor [38].…”

Section: Mass Yields Of Pyrolysis Productsmentioning

confidence: 99%

“…On the other hand, Mesa-Perez et al reported decreases in both the liquid and solid products of the pyrolysis of sugar cane straw in a fluidized bed reactor [31]. Jiang et al similarly reported a reduction in the biocrude and charcoal yields with an increase in the oxygen concentration in the pyrolysis of mallee wood biomass [39]. The differences in the results can be attributed to the differences in the feedstock source and the reactor type.…”

Section: Mass Yields Of Pyrolysis Productsmentioning

confidence: 99%

Production of Biocrude and Charcoal from Fast Oxidative Pyrolysis of Cassava Pulp Residue Using a Fluidized Bed Reactor

Cabaraban¹,

Divinagracia²

2020

J Eng App Sci Technol

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Cassava pulp (Manihot esculenta Crantz) residue (CPR) is the solid waste generated from the cassava processing industry. In the bench-scale experiments, fast oxidative pyrolysis of CPR was carried out in a fluidized bed reactor, using uncondensed recycled pyrolysis gas as carrier medium to produce charcoal and biocrude. The influence of three gas recycle rates, ranging from 0.60 to 2.3 Sm3 h –1 , on the product yields and characteristics was investigated. Results suggest that an increase in the recycle rate will lead to an increase in biocrude yield and a decrease in the charcoal yield. The product yields of biocrude and charcoal were 15.68 ± 2.08 percent and 24.29 ± 3.31 percent, respectively. The biocrude product was mainly composed of alcohols, phenols, ldehydes, ketones, alkanes, and alkynes. The charcoal obtained has a heating value that is around 85 percent higher than that of the CPR feedstock. It has a high fixed carbon content of around 67 percent, but a low volatile matter content of only around 28 percent. At the pyrolysis temperature of around 500 °C, the uncondensed pyrolysis gas compounds consisted primarily of N2 and C2 H6, with small amounts of H2, and higher hydrocarbon compounds. Results suggest the potential for generating biofuel products from the fast oxidative pyrolysis of CPR.

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Oxidative pyrolysis of mallee wood biomass, cellulose and lignin

Cited by 49 publications

References 43 publications

Kinetic and Synergetic Effect Analysis of the Co-Combustion of Coal Blended with Polyurethane Materials

Kinetic and Synergetic Effect Analysis of the Co-Combustion of Coal Blended with Polyurethane Materials

The Rate of Formation of Main Compounds in the Pyrolysis of Cinnamon Wood

Production of Biocrude and Charcoal from Fast Oxidative Pyrolysis of Cassava Pulp Residue Using a Fluidized Bed Reactor

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