Characteristics of syngas from pyrolysis and CO2-assisted gasification of waste tires

Policella, Matteo; Wang, Zhiwei; Burra, Kiran Raj Goud; Gupta, Ashwani K.

doi:10.1016/j.apenergy.2019.113678

Cited by 97 publications

(34 citation statements)

References 38 publications

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“…Rf followed the order: CST>SUN>PCO>RDF. Conversion to carbon monoxide ranged between 55% and 95%, while cold gas efficiency between 42% and 54%, agreeing with earlier data for MSW and waste tires biochars, 30-63% (Zheng et al, 2018) and 62.6% (Policella et al, 2019), respectively. The highest reactivity and conversion were achieved in the case of CST fuel.…”

Section: Gasification Characteristicssupporting

confidence: 90%

“…A two-stage process in fixed bed appliances, where the first step is pyrolysis of wastes and the second step reaction of char with carbon dioxide as the gasifying agent, presents several benefits. Bio-oil and gases produced during the first step can be used as sources of chemicals and energy (Policella et al, 2019), leaving a highly reactive bio-carbon to be converted to fuel gas free of tar (Vamvuka & Sfakiotakis, 2015). Furthermore, the use of the principal constituent of industrial flue gases causing global warming, as a post-treatment technique, gives a potential solution to the greenhouse gas effect.…”

Section: Introductionmentioning

confidence: 99%

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Investigating the Valorisation of Refused Derived Fuel for Energetic Uses Through Its Co-Gasification with Woody Wastes

Vamvuka¹,

Teftiki²,

Sfakiotakis³

2022

World Journal of Environmental Biosciences

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The present study aimed to investigate the valorization of Refused Derived Fuel (RDF) produced from solid waste management units for energetic uses, through its co-gasification with agricultural or forest wastes and carbon dioxide agents. Experiments were conducted using a fixed bed reactor and a thermal analysis system. The thermal behavior, the reactivity, the conversion, and the cold gas efficiency up to 950°C were evaluated based on the structural characteristics and inherent minerals of the materials, as well as on the basis of alkali catalysts and bio-oils admixed. Kinetic analysis of the co-gasification process was performed by developing an independent parallel reactions model. Blending RDF with the woody wastes at mass ratios 30:70 increased the conversion from 55% up to 86.4%. Gasification reactivity followed the order cotton stems>sunflower>pine cones>RDF. The addition of alkali compounds at low loadings as external catalysts enhanced conversion up to 100% and the process, in general, took place at much lower temperatures. The catalytic activity followed the order: CaO> Li2CO3>K2CO3. The addition of bio-oil at ratios 1:1 increased the conversion up to values 85-92%. The kinetic model applied was proven very successful, with deviation values below 5%. In presence of 10% wt, CaO the activation energy values of biochars were lowered from 148-252 kJ/mol to 138-201 kJ/mol, implying a better performance.

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Section: Gasification Characteristicssupporting

confidence: 90%

Section: Introductionmentioning

confidence: 99%

Investigating the Valorisation of Refused Derived Fuel for Energetic Uses Through Its Co-Gasification with Woody Wastes

Vamvuka¹,

Teftiki²,

Sfakiotakis³

2022

World Journal of Environmental Biosciences

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“…Reactions of dry reforming and Boudouard (Table 5, reactions 12 and 13) can be promoted by the addition of carbon dioxide to the oxidizing media (I. I. Ahmed & Gupta, 2012; Reddy, 2016; A. Singh et al, 2019). The main advantage of CO 2 assisted gasification is the fact that not only solid waste but also some carbon dioxide is consumed during the waste management operation and transformed to valuable CO (Chan et al, 2021; Policella et al, 2019; Z. Wang, Burra, et al, 2019; Z. Wang, Burra, Zhang, Li, Policella, et al, 2020; L. Wang, Zhang, Li, Pérez‐Fortes, Lin, et al, 2020). In real applications mixtures of different gasification agents, for example, oxygen and steam, and so forth are often used.…”

Section: Thermal Transformation Character and Thermochemical Treatment Of Wastesmentioning

confidence: 99%

Evolution of pyrolysis and gasification as waste to energy tools for low carbon economy

Porshnov

2021

WIREs Energy & Environment

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The paper aims to review the state of the art in the field of pyrolysis and gasification of waste and to identify approaches that can be prospective considering the upcoming transformation of society. The results show that the transition to a circular, low carbon economy will significantly change the composition of municipal wastes, making thermochemical approaches more and more competitive. However, it does not mean that pyrolysis and gasification will outperform incineration in the field of traditional waste to energy. Novel thermochemical waste management approaches must not be viewed as competitors, but rather as the successors of the traditional mass‐burn incineration. The transition to a circular, low carbon economy will result in an emergence of new needs, new products and thus in possibilities of new pyrolysis and gasification‐based business models different from the waste to energy concept. Negative emissions, energy storage, stabilization of renewable grids as well as renewable fuels must be mentioned as examples of such new products. Thus, thermochemical processing technologies should be embedded into the wider concept of circular, low carbon economy as the source of energy for recycling, a technology of tertiary recycling of synthetic polymers and as a way to transform nonrecyclable rejects into fuels, negative emissions, and other marketable products. This article is categorized under: Bioenergy > Systems and Infrastructure

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“…Policella et al [164] conducted experiments on pyrolysis and CO 2 gasification of waste tires in a lab-scale atmospheric pressure electrically heated fixed-bed semi-batch reactor at temperatures 400-900 • C (pyrolysis) and 700-1000 • C (gasification). The feedstock used had a shape of waste tire cubes (including textile fibers) of an average size of 2 × 2 cm.…”

Section: Co 2 Gasificationmentioning

confidence: 99%

Organic Waste Gasification: A Selective Review

Фролов

2021

Fuels

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This review considers the selective studies on environmentally friendly, combustion-free, allothermal, atmospheric-pressure, noncatalytic, direct H2O/CO2 gasification of organic feedstocks like biomass, sewage sludge wastes (SSW) and municipal solid wastes (MSW) to demonstrate the pros and cons of the approaches and provide future perspectives. The environmental friendliness of H2O/CO2 gasification is well known as it is accompanied by considerably less harmful emissions into the environment as compared to O2/air gasification. Comparative analysis of the various gasification technologies includes low-temperature H2O/CO2 gasification at temperatures up to 1000 °C, high-temperature plasma- and solar-assisted H2O/CO2 gasification at temperatures above 1200 °C, and an innovative gasification technology applying ultra-superheated steam (USS) with temperatures above 2000 °C obtained by pulsed or continuous gaseous detonations. Analysis shows that in terms of such characteristics as the carbon conversion efficiency (CCE), tar and char content, and the content of harmful by-products the plasma and detonation USS gasification technologies are most promising. However, as compared with plasma gasification, detonation USS gasification does not need enormous electric power with unnecessary and energy-consuming gas–plasma transition.

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Characteristics of syngas from pyrolysis and CO2-assisted gasification of waste tires

Cited by 97 publications

References 38 publications

Investigating the Valorisation of Refused Derived Fuel for Energetic Uses Through Its Co-Gasification with Woody Wastes

Investigating the Valorisation of Refused Derived Fuel for Energetic Uses Through Its Co-Gasification with Woody Wastes

Evolution of pyrolysis and gasification as waste to energy tools for low carbon economy

Organic Waste Gasification: A Selective Review

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