Effect of particle size and temperature on woody biomass fast pyrolysis at high temperature (1000–1400°C)

Septien, Santiago; Valin, Sylvie; Dupont, Capucine; Peyrot, Marine; Salvador, Sylvain

doi:10.1016/j.fuel.2012.01.049

Cited by 122 publications

(95 citation statements)

References 20 publications

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“…Decarboxylation, depolymerization and thermal cracking reactions are also favoured with the increase in temperature [22]. The slight decrease in gas yield at the highest studied temperature of 1050 °C was most likely due to the series of complex repolymerization and condensation reactions favourable at temperature above 1000 °C [8,23]. These condensation and repolymerization reactions lead to the formation of soot as a significant amount of soot was observed in the system during the 1050 °C experiment.…”

Section: Resultsmentioning

confidence: 99%

“…It has been suggested that above 1000 °C, the tertiary tars (polyaromatic hydrocarbons), acted as a precursor for the formation of soot [32]. These polycyclic aromatic hydrocarbon molecules grow into larger aromatic complexes until they reach a critical mass, forming soot particles [8].…”

Section: Characterization Of Reacted Catalystsmentioning

confidence: 99%

“…High temperature thermal processing of biomass has been undertaken to reduce the tar content of the flue gases. Septien et al [8] undertook the fast pyrolysis of woody biomass in a drop tube furnace at temperatures of 1000, 1200 and 1400 °C. Increasing pyrolysis temperature produced increased yield of gas and also increased H2.…”

Section: Introductionmentioning

confidence: 99%

“…The influence of process parameters on the biomass/gasification of biomass has been investigated by various researchers [4,5,8,10,16,17] and process operating parameters such as gasification/reforming temperature, steam flow rate and biomass particle size have been investigated. For example, Luo et al [4,5] investigated the influence of gasification/reforming temperature, steam flow rate and particle size in a fixed bed reactor.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

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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Section: Resultsmentioning

confidence: 99%

Section: Characterization Of Reacted Catalystsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

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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“…Experimental ones are generally performed with lab-scale reactors which allow reproducing some important EFR characteristics as temperature, heat flux, residence time and particle size: the Drop Tube Reactor (DTR). Only few studies have dealt with woody biomass pyrolysis in a DTR above 1000°C [3][4][5][6]. Woody biomass gasification has been studied at high temperature (T > 1000°C) in presence of oxygen [4,7,8] and/or in presence of steam [4,7,[9][10][11] or in presence of carbon dioxide [11].…”

Section: Introductionmentioning

confidence: 99%

Influence of H 2 O, CO 2 and O 2 addition on biomass gasification in entrained flow reactor conditions: Experiments and modelling

Billaud

Valin

Peyrot

et al. 2016

Fuel

Self Cite

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. Influence of H2O, CO2 and O-2 addition on biomass gasification in entrained flow reactor conditions: Experiments and modelling. Fuel, Elsevier, 2016, 166, pp.166-178. 10 Experiments were modelled with a 1D-model using detailed chemical scheme. Gas, char, tar + soot were satisfactorily simulated in the whole range of conditions. ysis reaction, gas phase reaction with a detailed chemical scheme (176 species, 5988 reactions), char gasification by steam and CO 2 and soot formation. H 2 O or CO addition has no influence on gasification product yields at 800 and 1000 °C, while at 1200 and 1400 °C the char gasification is significantly enhanced and soot formation is certainly inhibited by OH radical which reacts with soot precursors. The modification of output gas phase composition is mostly due to WGS reaction which reaches thermodynamic equilibrium from about 1200 °C. As expected, O 2 has a significant influence on gas and tar yields through combustion reactions. Char and soot yields decrease as ER increases. The GASPAR model allows a good prediction of gas and char and gives relevant evolution of soot and tar yields on the large majority of conditions studied.

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Production of Acetylene from Viable Feedstock: Promising Recent Approaches

Gyrdymova,

Lebedev,

et al. 2024

ChemPlusChem

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The potential of acetylene is extremely high both in chemical industry and synthetic applications due to unsaturated nature and the smallest C≡C unit. The production of many essential necessities is originated from acetylene; however, the formation of acetylene molecule requires a lot of energy. Currently, the access to acetylene is based on coal processing, methane reforming and calcium carbide hydrolysis. Recently, extensive research has been done to decrease the cost of acetylene. In this review, the routes to acetylene were highlighted, considering the energy consumption in kW/t of the product to evaluate the best approach. Since energy prices depend on various regions, the cost of the product is complicated. The manufacturing of acetylene is usually accompanied by formation of by‐products, which may be valuable or not. The review should help to identify current status and not overlook promising approaches.

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Effect of particle size and temperature on woody biomass fast pyrolysis at high temperature (1000–1400°C)

Abstract: Effect of particle size and temperature on woody biomass fast pyrolysis at high temperature (1000-1400 degrees C). Fuel, Elsevier, 2012, 97, pp.

Cited by 122 publications

References 20 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

Influence of H 2 O, CO 2 and O 2 addition on biomass gasification in entrained flow reactor conditions: Experiments and modelling

Production of Acetylene from Viable Feedstock: Promising Recent Approaches

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