Pyrolysis of wood at high temperature: The influence of experimental parameters on gaseous products

Commandré, Jean-Michel; Lahmidi, H.; Salvador, Sylvain; Dupassieux, Nathalie

doi:10.1016/j.fuproc.2010.07.009

Cited by 41 publications

(25 citation statements)

References 24 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The primary pyrolysis took place at the temperature of 200-600 °C and occured when the biomass decomposes into the primary char (Basu, 2010a). Dufour et al (2008) stated that CH 4 increased up to 70% at 1000 °C and the tar decreased but gases increased at temperatures between 800-1000 0 C (Commandré, Lahmidi, Salvador, & Dupassieux, 2011). Smaller char reacted to oxygen more easily in combustion and gasification.…”

confidence: 99%

Creating high levels of gas production from Waste Mushroom Substrate Pellets

Saengsuwan

Kritpolwiwattana

2019

Agrivita.J.Agr.Sci

View full text Add to dashboard Cite

This study was to investigate the use of waste mushroom substrate (WMS) material, and waste mushroom substrate pellets (WMSP), with two catalysts (K 2 CO 3 and CaO), as biofuel feed to produce CH 4 in an updraft gasifier. The WMS was made from composted rubber wood chips which had been used for mushroom bed log culture, and pelletizing the WMS (WMSP) to create a biomass with a greater bulk density than the normal WMS. The gasification was determined in the high temperature range of 400-800 0 C by dry fuel feeding at the rate of 25 kg/ha. The results showed that the optimum operation was achieved with WMSP with K 2 CO 3 as the catalyst, at ER = 0.11. The combination of WMSP and K 2 CO 3 produced more CH 4 at 62.2 and 15.27% than single WMS and WMSP, respectively. WMSP with CaO as the catalyst produced 29.65 % less CH 4 than WMSP. Based on gasification equation, CO produced from WMSP was calculated 24.116 % wt, 31.52% wt from WMSP with K 2 CO 3 and 19.21% wt from WMS. The amount of gas produced from the available waste material as the biomass was sufficient to meet all heating requirements of the mushroom production.

show abstract

confidence: 99%

Creating high levels of gas production from Waste Mushroom Substrate Pellets

Saengsuwan

Kritpolwiwattana

2019

Agrivita.J.Agr.Sci

View full text Add to dashboard Cite

show abstract

“…products can vary depending on the pyrolysis conditions, for instance reported char yields range from 7 to 50% [50,9]. The three main factors influencing pyrolysis products distribution are: the pyrolysis final temperature and heating rate and biomass initial composition [51,52,27,[53][54][55]26,56].…”

Section: Speciesmentioning

confidence: 99%

Biomass gasification under high solar heat flux: Advanced modelling

Pozzobon

Salvador

Bézian

2018

Fuel

View full text Add to dashboard Cite

This article presents a new numerical model describing the behaviour of a thermally thick wood sample exposed to high solar heat flux (above 1 MW/m 2). A preliminary study based on dimensionless numbers is used to classify the problem and support model building assumptions. Then, a model based on mass, momentum and energy balance equations is proposed. These equations are coupled with liquid-vapour drying model and pseudo species biomass degradation model. By comparing to a former experimental study, preliminary results have shown that these equations are not enough to accurately predict biomass behaviour under high solar heat flux. Indeed, a char layer acting as radiative shield forms on the sample exposed surface. In addition to this classical set of equations, it is mandatory to take into account radiation penetration into the medium. Furthermore, as biomass contains water, medium deformation consecutively to char steam gasification must also be implemented. Finally, with the addition of these two strategies, the model is able to properly capture the degradation of biomass when exposed to high radiative heat flux over a range of sample initial moisture content. Additional insights of biomass behaviour under high solar heat flux were also derived. Drying, pyrolysis and gasification fronts are present at the same time inside of the sample. The coexistence of these three thermochemical fronts leads to char gasification by the steam produced from drying of the sample, which it is the main phenomenon behind medium ablation.

show abstract

“…The higher char yield was also observed in low temperature in their experiments. Commandré et al [44] carried out the pyrolysis process of the pine wood at different temperature ranges using nitrogen as a carrier gas. They have also figured out that hydrogen production has significantly increased by increasing temperature that also supports the present study of pyrolysis of biomass.…”

Section: Tablementioning

confidence: 99%