Oxidative Conversion of Wood Gasification Products in a Mixing Reactor

Кислов, В. М.; Глазов, С. В.; Salganskaya, M. V.; Pilipenko, E. N.; Tsvetkova, Yu. Yu.

doi:10.1134/s1070427221030113

Cited by 4 publications

(4 citation statements)

References 17 publications

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“…Some of the volatile materials are turned into a liquid called tar or bio-oil, along with a mix of noncondensable gases. The bio-oil is stored for later use in energy production, while the gases are used to provide heat for the pyrolysis reactor [26]. The pyrolysis products are produced through the decomposition of the solid biomass and the transformation of volatile materials into gases, secondary tar, and char [27].…”

Section: Introductionmentioning

confidence: 99%

Thermogravimetric analysis of gasification and pyrolysis of algae biomass

Tsvetkov,

Zaichenko,

Podlesniy

et al. 2024

E3S Web Conf.

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In the present paper, the case of the brown algae Saccharina japonica from Aniva Bay (Sea of Okhotsk, Sakhalin Island) was investigated by a thermogravimetric analysis up to 700°C at different atmospheres. The elemental composition, lower heating value, ash content, and biochar yield of the algae were examined. The analysis showed that carbohydrates like alginate, mannitol, fucoidan, and laminarin were decomposed between 250-350°C, while proteins and lipids were burned out between 500-550°C.

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Section: Introductionmentioning

confidence: 99%

Thermogravimetric analysis of gasification and pyrolysis of algae biomass

Tsvetkov,

Zaichenko,

Podlesniy

et al. 2024

E3S Web Conf.

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“…Temperature is the most influential factor in the thermochemical methods of hydrogen production since these reactions are endothermic. High process temperature ensures the completeness of carbon conversion and reduces the number of resins [10]. The pressure in the gasifier reactor is an important control parameter that affects the composition of the gaseous products.…”

Section: Introductionmentioning

confidence: 99%

Thermodynamic assessment of gasification and pyrolysis of marine algae to produce hydrogen-containing gas

Tsvetkov,

Zaichenko,

Podlesniy

2023

E3S Web Conf.

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The article gives a thermodynamic assessment of modes of gasification and pyrolysis of algae of gross formulation C1H1.66O1.4 with obtaining hydrogen gas. The authors investigate the modes of air gasification and pyrolysis of algae at pressures of 0.1 MPa and 1 MPa with varying the fuel excess ratio and temperatures. In the case of gasification at a pressure of 0.1 MPa the hydrogen and carbon monoxide concentration increases with an increase of the fuel excess ratio (φ) from 2 to 10 and at φ = 10 and T = 1000 K reaches 25.95 mole % and 27.84 mole %, respectively. An increase in temperature from 1000 K to 1300 K leads to a decrease in the amount of hydrogen and an increase in carbon monoxide in the gaseous products. An increase in the operating pressure from 0.1 to 1 MPa at a gasification temperature of 1000 K leads to the formation of a small amount of methane (~ up to 5 mole %), a decrease in the mole content of hydrogen and carbon monoxide in the final products, and also to the formation of coke (at φ≥7), which we can use as a target product. The caloric value of the gases produced is higher in the pyrolysis of algae than in its gasification. The pressure increase at 1300 K has almost no effect on the equilibrium composition of the products in the gaseous products.

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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%

“…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. There are different ways to solve this problem, from relatively simple and cheap (filtration, scrubbing) to complex and material-intensive (plasma, catalysts).…”

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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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Oxidative Conversion of Wood Gasification Products in a Mixing Reactor

Cited by 4 publications

References 17 publications

Thermogravimetric analysis of gasification and pyrolysis of algae biomass

Thermogravimetric analysis of gasification and pyrolysis of algae biomass

Thermodynamic assessment of gasification and pyrolysis of marine algae to produce hydrogen-containing gas

Mathematical modeling of tar conversion on downdraft biomass gasification processes

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