The Simulation of Single Phase Tubular Reactors with Incomplete Reactant Mixing

Abstract

The influence of reactant segregation and of the rate of reactant mixing on fast homogeneous chemical reaction rates is considered and a computer model presented to simulate the effect of mixing within a tubular reactor fed by two segregated but miscible streams. Results obtained from use of the model are discussed.

Closure models for turbulent reacting flows

“…Since the flow rate of each stream was maintained constant, the feed stoichiometry was varied by changing the concentration in one of the feed streams. This work of Vassilatos and Toor has been used widely for the validation of models of mixing and chemical reaction (e.g., Kattan and Adler, 1967;Harris and Srivastava, 1968;Mao and Toor, 1970;Rao and Dunn, 1970).…”

Turbulent motion, mixing, and kinetics in a chemical reactor configuration

“…The first theories to treat the second order intermediate reaction rate case were based on phenomenological models: Kattan and Adler (1967), Harris and Srivastava ( 1968), Mao and Toor (1970), Rao and Dunn (1970), and Rao and Edwards (1971) are examples.…”

General Population Balance Modelling of Unpremixed Feedstream Chemical Reactors: A Review

“…Thus, Kattan and Adler (I 967a), Harris and Srivastava (1968), and Rao and Dunn (1970) have shown that their coalescence and redispersion parameters account for the experimental reaction data of the unpremixed feed, multi-jet, one-dimensional reactor of Vassilatos and Toor (1965). Similarly, Flagan and Appleton (1974) and Patterson (1976) verified their models using, respectively, the experimental data obtained in the one-dimensional reactors of Pompei and Heywood (1972) and Mao and Toor (1971).…”

“…Between interactions each fluid element is assumed to behave as an independent batch reactor. The various available models differ in the method of controlling the rate of mixing by coalescence and redispersion (Curl, 1963;Spielman and Levenspiel, 1965;Evangelista et al, 1969a;Kattan and Adler, 1967a, 1967bHarris and Srivastava, 1968;Rao and Dunn, 1970;Zeitlin and Tavlarides, 1972;Flagen and Appleton, 1974;Patterson, 1975Patterson, , 1976, and in locating the fluid elements within either a spatial frame of reference (Kattan and Adler, 1967a;Harris and Srivastava, 1968;Radford et al, 1970;Coldrey et al, 1971;Flagan and Appleton, 1974;Rao and Dunn, 1970;Sondrea1, 1972;Patterson, 1976), or within a black-box in which the location of fluid elements is defined by coordinates derived from residence time information (Curl, 1963;Spielman and Levenspiel, 1965;Evangelista et al, 1969a;Evangelista, 1970;Kattan and Adler, 1972;. Whatever method is used in black-box models for selecting elements for this coalescence-redispersion process, and its rate of occurrence, one restriction must always be imposed.…”