On the development of a wood gasification modelling approach with special emphasis on primary devolatilization and tar formation and destruction phenomena

Martínez-Lera, Susana; Ranz, Javier Pallarés

doi:10.1016/j.energy.2016.07.060

Cited by 7 publications

(4 citation statements)

References 44 publications

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“…Thermal gasification converts fuel into syngas with chars and tar as byproducts formed during the process which restricts practical applications. These byproducts are also harmful to the environment and human health, therefore, it is essential to reduce their production [29]. To evaluate the quantity of tar production during the tests, as previously mentioned, the tars condense and are retained in the bottom biomass filter well, as in the piping end where they are condensed due to temperatures below 300 • C (last stage before the flare).…”

Section: Tarsmentioning

confidence: 99%

Energy Recovery via Thermal Gasification from Waste Insulation Electrical Cables (WIEC)

et al. 2020

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The recovery of noble metals from electrical wires and cables results in waste materials such as polyvinyl chloride (PVC) and polyethylene (PE), that is, waste insulation electrical cables (WIEC), which have been processed by gasification for energy recovery. This study focused on the effect of blending the ratio of WIEC on the gasification feedstock composition and the lower heating value (LHV) of produced syngas, through controlled tests and tests under different loads on the generator. The controlled gasification experiments were carried out at blending ratios between pine biomass and WIEC of 90:10, 80:20, and 70:30 and with pine biomass only (100%). For the loads gasification, the experiments were carried out at a blending ratio of 80:20. The controlled experimental results presented that the highest hydrogen content, approximated 17.7 vol.%, was observed at a blending ratio of 70:30 between pine biomass and WIEC and the highest LHV of syngas was observed at a blending ratio of 90:10, with 5.7 MJ/Nm3. For the load gasification experiments, the results showed that the highest hydrogen content was obtained with a load of 15 kW in the generator, approximately 18.48 vol.% of hydrogen content, and the highest LHV of synthesis gas was observed during the 5 kW test, with 5.22 MJ/Nm3. Overall, the new processing of waste insulation electrical cables using a downdraft gasification reactor demonstrates great promise for high quality syngas production.

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Section: Tarsmentioning

confidence: 99%

Energy Recovery via Thermal Gasification from Waste Insulation Electrical Cables (WIEC)

et al. 2020

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“…During the gasification process, tar (polycyclic aromatic compounds with molecular weight higher than that of benzene) and particulate matter are generated. These substances are dangerous both for the engine and for human health and it is therefore necessary to reduce their formation [29]. In order to estimate the particulate and tar content in the syngas, a modified version of the "Tar sampling protocol" [30] was implemented and shown in Figure 3.…”

Section: Tar and Particulate Samplingmentioning

confidence: 99%

Gasification of cotton crop residues for combined power and biochar production in Mozambique

Allesina

Pedrazzi

Allegretti

et al. 2018

Applied Thermal Engineering

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“…Statistical models for tar yield prediction were described and used 96,97 . Thermodynamic modeling of oxidative tar conversion was used for parameter optimization 98 …”

Section: Introductionmentioning

confidence: 99%

“…Statistical models for tar yield prediction were described and used. 96,97 Thermodynamic modeling of oxidative tar conversion was used for parameter optimization. 98 The literature review shows that tar reduction is one of the main problems in biomass gasification technology implementation.…”

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confidence: 99%

Mathematical modeling of tar conversion on downdraft biomass gasification processes

Donskoy

2023

Biofuels Bioprod Bioref

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The article concerns some problems associated with the use of low‐grade fuels for the production of syngas in fixed‐bed gasifiers. Syngas is typically used to feed internal combustion engines in small power systems. Gas quality can be understood as its various characteristics, such as calorific value, the content of individual components (for example, hydrogen), low tar and soot content, and so forth. Achieving these quality criteria often requires specific conditions for the gasification process, in addition, some of them may be limited by additional requirements that are associated with thermal stability or fuel conversion requirements. When evaluating the technical and economic characteristics of gasification‐based power plants, the optimal efficiency does not always correspond to the higher efficiency of the gasification process and the quality of producer gas. In this regard, the aim is to develop optimization methods for different criteria and to create regime maps that cover physically achievable options. Novel mathematical models of tar conversion are proposed, allowing investigation of the dependencies of tar yield on gasification conditions, including the addition of catalysts or staged air supply. Computational tools based on thermodynamic and kinetic models make it possible to solve some of these problems, first of all, to consider and compare the efficiency of various methods for reducing tar content in producer gas (staged gasification, fuel mixing, thermal, and catalytic methods of tar elimination). The choice of relatively simple mathematical models allows us to conduct numerical calculations in a wide range of conditions and to optimize the parameters of biofuel conversion plants. This approach allows a more flexible choice of gasifier operating conditions, including its work as a part of a power unit. Optimal parameters are calculated for specific conditions: secondary air ratio (1–20%) and fraction of catalytic material (5–10%). The results may be used in the analysis and choice of biofuel gasification conditions at small power plants.

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On the development of a wood gasification modelling approach with special emphasis on primary devolatilization and tar formation and destruction phenomena

Cited by 7 publications

References 44 publications

Energy Recovery via Thermal Gasification from Waste Insulation Electrical Cables (WIEC)

Energy Recovery via Thermal Gasification from Waste Insulation Electrical Cables (WIEC)

Gasification of cotton crop residues for combined power and biochar production in Mozambique

Mathematical modeling of tar conversion on downdraft biomass gasification processes

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