Results 231 to 240 of about 81,208 (258)

Influence of the gas density on the gas entrainment rate and gas hold-up in loop-venturi reactors

Chemical Engineering Science, 1992
The hydrodynamics of a loop-venturi reactor were investigated using a downflow liquid jet ejector. Both the gas entrainment rate of the ejector and the gas hold-up in the main holding vessel were shown to be influenced by the gas density. The amount of volumetrically entrained gas as well as the gas hold-up increase, whilst the average gas bubble ...
Cramers, P.H.M.R., van Dierendonck, L.L., Beenackers, A.A.C.M.   +2 more
openaire   +1 more source

Local gas hold-up measurement in stirred fermenters. II. Fermenter gas hold-up characterization by a second order empirical model

Biotechnology Techniques, 1990
A second order polynomial, fitted by means of a Box-Hunter design, was used to describe the local gas hold-up of a stirred fermenter as a function of the stirrer speed, the aeration and the height of the point of measurement. Stirrer speed was found to be the main influential variable, whereas the aeration and the height of the point of measurement ...
openaire   +1 more source

Gas hold-up profiles in foaming liquids in bubble columns

Chemical Engineering Journal, 2001
Radial variation of gas hold-up was investigated in 0.385 m i.d. bubble column using gamma ray tomography. The gas phase was air and the liquid phase comprised of aqueous solutions of n-butanol at different concentrations (0-0.5% v/v). These solutions exhibit foaming behaviour at higher concentrations.
U.Parasu Veera, Kamal L Kataria, J.B Joshi   +2 more
openaire   +1 more source

Hold-up and fluid mixing in gas-liquid fluidised beds

The Chemical Engineering Journal, 1970
Abstract Axial mixing in the fluid phases of liquid and gas-liquid fluidised beds has been examined by the imperfect pulse method, using radioactive isotopes as tracers. The intensity of mixing is strongly dependent on the particle size of the ballotini and the flow rate of the fluid phases. In beds of 6 mm particles mixing may be neglected except at
M.L. Michelsen, K. Østergaard
openaire   +1 more source

Dispersed phase hold-up in mechanically agitated gas-liquid contactors

Journal of Chemical Technology & Biotechnology, 1998
In the present study, in mechanically agitated gas–liquid contactors (MAC), a generalized correlation for the direct estimation of dispersed gas phase hold-up is proposed. This present proposed new correlation in terms of fundamental operating variables, involving gas velocity, impeller speed in terms of Froude number, vessel geometry and the physical ...
openaire   +1 more source

Hold-up time in gas chromatography

Journal of Chromatography A, 1998
Rosa Lebrón-Aguilar, José Antonio Garcı́a-Domı́nguez, Jesús Eduardo Quintanilla-López   +2 more
openaire   +1 more source

A Comparative Study of Prediction of Gas Hold up Using ANN

2022
Nirjhar Bar, Asit Baran Biswas, Sudip Kumar Das   +2 more
openaire   +1 more source

5551281 Method for determining gas hold-up

Biotechnology Advances, 1997
openaire   +2 more sources

Gas Hold-Up Characteristics

2019
openaire   +1 more source

Hold-up Characteristics of Gas Bubbles

2016
openaire   +1 more source