Kryterium autotermiczności reaktora o periodycznie zmienianym kierunku zasilania surowcem

• Autorzy: Burghardt A.

Warianty tytułu

EN

Autothermicity of a reverse-flow reactor

• Języki publikacji: PL

Abstrakty

PL

Stabilna praca reaktora o periodycznie zmienianym kierunku przepływu mieszaniny reagującej osiągana jest w tzw. cyklicznym stanie ustalonym o ściśle zdefiniowanych właściwościach symetrii profili zmiennych stanu, które ustalono w wyniku złożonych symulacji dynamicznych procesu. Wprowadzając właściwości symetrii profili zmiennych stanu do równań modelu matematycznego reaktora, wyprowadzono ścisłe zależności ilościowe definiujące cykliczny stan ustalony, określając zarazem kryterium autotermiczności reaktora. W rozważaniach tych wykorzystano jednowymiarowy ciągły model dwufazowy reaktora katalitycznego. Równania opisujące ten model zostały przekształcone do takiej postaci, która umożliwiała wykorzystanie w niej właściwości symetrii profili temperatury i składu mieszaniny. Wyprowadzone zależności stanowią ponadto narzędzie umożliwiające badanie w stosunkowo prosty sposób zbieżności do cyklicznego stanu ustalonego w trakcie symulacji dynamicznej.

EN

Stable operation of a reverse-flow reactor is accomplished as the so-called cyclic steady-state which is characterised by strictly defined symmetry properties of the profiles of state variables. These symmetry properties have been determined as a result of numerous dynamic simulations of the process considered. In the present study, introducing the symmetry properties into the balance equations of the mathematical model of the reactor, exact quantitative relations have been developed which clearly define the cyclic steady-state and, simultaneously, determine the criterion of autothermicity of the process. In the considerations, a one-dimensional, two-phase, continuous model of the reactor has been applied. The equations of the reactor model have been transformed to such a form which enables the introduction of the symmetry properties of the profiles of temperature and mixture composition. Moreover, the equations derived form a tool, which makes it possible to investigate, in a relatively simple way, the convergence to the cyclic steady-state during the dynamic simulations.

Słowa kluczowe

PL

autotermiczność; modelowanie matematyczne reaktora; reaktor chemiczny

• Wydawca: Komitet Inżynierii Chemicznej i Procesowej Polskiej Akademii Nauk
• Czasopismo: Inżynieria Chemiczna i Procesowa
• Rocznik: 2003
• Tom: T. 24, z. 1
• Strony: 3--19
• Opis fizyczny: Bibliogr. 35 poz.

Twórcy

autor

Burghardt A.

• Polska Akademia Nauk, Instytut Inżynierii Chemicznej, ul. Bałtycka 5, 440100 Gliwice

Bibliografia

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