Modeling of drying and pyrolysis in a gasifier during the startup phase

• Autorzy: Ciżmiński P. , Polesek-Karczewska S. , Kardaś D.
• Języki publikacji: EN

Abstrakty

EN

An appropriate arrangement of particular zones in the gasifier is of practical importance for the gasification process effectiveness. One of the parameters that affects the optimum reactor operation and has to be taken into account is the speed of bed movement. The transient one-dimensional model describing the heat and mass transfer in the upper section of the biomass fixed bed gasifier that covers the zones of evaporation and pyrolysis, was introduced. To study the effect of packed bed settling resulted from the wood particles’ volume change due to their devolatilization, the simulations for various bed movement speeds were performed. The computation results indicated, as expected, on the different distribution of pyrolysis and drying zones, depending on the speed value. The clear tendency towards the reduction of pyrolysis zone, and on the other hand, towards the expansion of drying zone, with an increasing movement speed was observed.

Słowa kluczowe

EN

moisture; evaporation; condensation; pyrolysis

• Wydawca: Wydawnictwo Instytutu Maszyn Przepływowych PAN
• Czasopismo: Transactions of the Institute of Fluid-Flow Machinery
• Rocznik: 2015
• Tom: nr 128
• Strony: 73--83
• Opis fizyczny: Bibliogr. 12 poz., rys.

Twórcy

autor

Ciżmiński P.

• The Szewalski Institute of Fluid-Flow Machinery of the Polish Academy of Sciences, Fiszera 14, 80-231 Gdańsk, Poland

autor

Polesek-Karczewska S.

• The Szewalski Institute of Fluid-Flow Machinery of the Polish Academy of Sciences, Fiszera 14, 80-231 Gdańsk, Poland

autor

Kardaś D.

• The Szewalski Institute of Fluid-Flow Machinery of the Polish Academy of Sciences, Fiszera 14, 80-231 Gdańsk, Poland

Bibliografia

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