Soot formation and oxidation during bio-oil gasification: experiments and modeling

Chhiti, Younes; Peyrot, Marine; Salvador, Sylvain

doi:10.1016/s2095-4956(13)60093-5

Cited by 38 publications

(23 citation statements)

References 23 publications

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“…The heat treatment temperature and gasification agent have a strong influence on soot formation and conversion [22]. Steam gasification leads to complete conversion of soot at temperatures greater than 1300°C, whereas at temperatures less than 1300°C soot formation is determined by O 2 concentration, to which it is inversely proportional [23]. Soot oxidation reactivity and particle size are important and interrelated considerations.…”

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confidence: 99%

Characterization and reactivity of soot from fast pyrolysis of lignocellulosic compounds and monolignols

et al. 2018

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Biomass soot samples were generated at fast pyrolysis conditions in a DTF at 1250°C.• The reactivity of soot was determined in 40 vol.% CO 2 gasification by TGA.• The most reactive was cellulose soot with the largest separation distance.• The least reactive CH 3 OH extracted lignin soot had the smallest separation distance.• The particle size and radical concentration of soot influenced the reactivity less.

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confidence: 99%

Characterization and reactivity of soot from fast pyrolysis of lignocellulosic compounds and monolignols

et al. 2018

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“…Almost all tar is converted into soot. The soot yield is 10.1 wt% at 1200 • C and 9.6% at 1300 • C. The slight decrease of soot yield at 1300 • C may be explained by steam and CO 2 gasification of soot following reaction (R1) and reaction (R2) (Boudouard reaction) respectively, which could explain the decrease of CO 2 , as well as the increase of H 2 and CO as mentioned in section 3.2.2 [40,41]. The soot formation should not be a surprise.…”

Section: Effect Of Reforming Temperature On the Global Process Mass Balancementioning

confidence: 91%

A novel two-stage gasification strategy for nitrogen-free syngas production- pilot-scale experiments

Tanoh

Oumeziane

Lémonon

et al. 2021

Fuel Processing Technology

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Green waste and wood gasification have been studied through a non-catalytic process. Experiments are conducted at a pilot-scale developed at RAPSODEE Centre to validate the feasibility of producing high-quality nitrogen-free syngas. Biomass is first pyrolyzed at 800 • C in a rotary kiln. Then, the volatile matter is cracked and reformed in a non-catalytic tubular reactor. Effects of temperature and gas residence time in the tubular reactor on the process performances are evaluated. The results show that the tar formed in the first stage for each biomass is mainly converted into soot inside the second one. The soot yield has reached 11.5 wt% at 1300 • C with a gas residence time of 10 s. Wood tar appears to have a different suite of compounds than tar from green waste; they probably have different cracking pathways. The wood tar conversion ratio has achieved 98.8% at 1300 • C with a gas residence of 5 s while it reaches only 80.4% for green waste. Under these operating conditions, the lower heating value of syngas is around 11 MJ/Nm 3 . The syngas obtained is rich in H 2 (up to 50 vol %) and CO (up to 35 vol%) and contains CO 2 (<10 vol%) and CH 4 (< 5 vol%).

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“…Soot formation leads to reduced cold gas efficiency (CGE) and carbon conversion efficiency (CCE) values. Chhiti et al proposed a model for describing the formation of soot during bio-oil gasification [74]:…”

Section: Stages Of Gasificationmentioning

confidence: 99%

Waste-Based Intermediate Bioenergy Carriers: Syngas Production via Coupling Slow Pyrolysis with Gasification under a Circular Economy Model

Frantzi

Zabaniotou

2021

Energies

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Waste-based feedstocks and bioenergy intermediate carriers are key issues of the whole bioenergy value chain. Towards a circular economy, changing upcycling infra-structure systems takes time, while energy-from-waste (EfW) technologies like waste pyrolysis and gasification could play an integral part. Thus, the aim of this study is to propose a circular economy pathway for the waste to energy (WtE) thermochemical technologies, through which solid biomass waste can be slowly pyrolyzed to biochar (main product), in various regionally distributed small plants, and the pyro-oils, by-products of those plants could be used as an intermediate energy carrier to fuel a central gasification plant for syngas production. Through the performed review, the main parameters of the whole process chain, from waste to syngas, were discussed. The study develops a conceptual model that can be implemented for overcoming barriers to the broad deployment of WtE solutions. The proposed model of WtE facilities is changing the recycling economy into a circular economy, where nothing is wasted, while a carbon-negative energy carrier can be achieved. The downstream side of the process (cleaning of syngas) and the economic feasibility of the dual such system need optimization.

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Soot formation and oxidation during bio-oil gasification: experiments and modeling

Cited by 38 publications

References 23 publications

Characterization and reactivity of soot from fast pyrolysis of lignocellulosic compounds and monolignols

Characterization and reactivity of soot from fast pyrolysis of lignocellulosic compounds and monolignols

A novel two-stage gasification strategy for nitrogen-free syngas production- pilot-scale experiments

Waste-Based Intermediate Bioenergy Carriers: Syngas Production via Coupling Slow Pyrolysis with Gasification under a Circular Economy Model

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