Modelling super-equilibrium in biomass gasification with the constrained Gibbs energy method

Kangas, Petteri; Hannula, Ilkka; Koukkari, Pertti; Hupa, Mikko

doi:10.1016/j.fuel.2014.03.034

Cited by 38 publications

(42 citation statements)

References 21 publications

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“…Presented model is based on the Gibbs minimization method, which is well known and widely used to modeling complex processes such as gasification [11][12][13][14]. In this study…”

Section: Model Developmentmentioning

confidence: 99%

Simulation analysis of wastes gasification technologies

Stępień

Ściążko²,

Czerski

et al. 2017

E3S Web Conf.

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Abstract. Each year a significant growth in the amount of wastes generated is observed. Due to this fact technologies enabling utilization of wastes are needed. One of the ways to utilizes wastes is thermal conversion. Most widely used technology for thermal conversion is gasification that enables to produce syngas that can be either combusted or directed to further synthesis to produce methanol or liquid fuels. There are several commercially available technologies that enable to gasify wastes. The first part of this study is subjected to general description of waste gasification process. Furthermore the analysis and comparison of commercially available gasification technologies is presented, including their process arrangement, limits and capabilities. Second part of the study is dedicated to the development of thermodynamic model for waste gasification. The model includes three zones of gasification reactors: drying, gasification and eventually ash melting. Modified Gibbs minimization method is used to simulate gasification process. The model is capable of predicting final gas composition as a function of temperature or equivalence ratio. Calculations are performed for a specified average wastes composition and different equivalence ratios of air to discuss its influence on the performance of gasification (temperature of the process and gas composition). Finally the model enables to calculate total energy balance of the process as well as gasification and final gas temperature.

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“…Presented model is based on the Gibbs minimization method, which is well known and widely used to modeling complex processes such as gasification [11][12][13][14]. In this study…”

Section: Model Developmentmentioning

confidence: 99%

Simulation analysis of wastes gasification technologies

Stępień

Ściążko²,

Czerski

et al. 2017

E3S Web Conf.

View full text Add to dashboard Cite

show abstract

“…Na literatura diversas pesquisas usam esta metodologia para predizer a composição de sistemas com muitas espécies e diversas fases em equilíbrio químico [9][10][11][12][13][14]. A energia de Gibbs total de um sistema fechado, à temperatura e a pressão constantes, diminui durante um processo irreversível e a condição de equilíbrio é atingida quando a energia de Gibbs alcança seu valor mínimo [15].…”

Section: Metodologia Da Minimização Da Energia Livre De Gibbsunclassified

Proposta de emprego de conceitos de equilíbrio químico na descrição matemática da câmara de combustão de caldeira siderúrgica

Turetta¹,

Costa²

2015

Anais Do VI Encontro Científico De Física Aplicada

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“…Koukkari and his co-workers [39][40][41][42][43][44] later improved their approach and extended the applicability of the constrained equilibrium method for different systems. Recently, Kangas et al [45,46] have successfully applied the constrained equilibrium method for the conventional biomass gasification and conversion systems. Here, Kangas et al [45] have introduced process dependent values (such as the amounts of carbon conversion, tar, ammonia, hydrogen, methane and other hydrocarbons) as additional constraints in modeling the conventional biomass gasification.…”

Section: Introductionmentioning

confidence: 99%

“…Recently, Kangas et al [45,46] have successfully applied the constrained equilibrium method for the conventional biomass gasification and conversion systems. Here, Kangas et al [45] have introduced process dependent values (such as the amounts of carbon conversion, tar, ammonia, hydrogen, methane and other hydrocarbons) as additional constraints in modeling the conventional biomass gasification. The physical values of the additional constraints were acquired from experimental data that exist in literature.…”

Section: Introductionmentioning

confidence: 99%