Identifiability of kinetic models of isotope transient tracing in fixed bed plug flow reactors

1999 ◽  
Vol 68 (1) ◽  
pp. 77-94
Author(s):  
Masood Otarod ◽  
John Happel
Keyword(s):  
Kinetic Models ◽  
Plug Flow ◽  
Fixed Bed ◽  
Flow Reactors

scholarly journals Biodiesel from different oil using fixed-bed and plug-flow reactors

2010 ◽  
Vol 35 (1) ◽  
pp. 283-287 ◽  
Author(s):  
Pengmei Lu ◽  
Zhenhong Yuan ◽  
Lianhua Li ◽  
Zhongming Wang ◽  
Wen Luo
Keyword(s):  
Plug Flow ◽  
Fixed Bed ◽  
Flow Reactors

Generalized treatment of concentration forcing in fixed-bed plug-flow reactors

1987 ◽  
Vol 42 (5) ◽  
pp. 1095-1101 ◽  
Author(s):  
Jan Thullie ◽  
Leroy Chiao ◽  
Robert G. Rinker
Keyword(s):  
Plug Flow ◽  
Fixed Bed ◽  
Flow Reactors

Comparison of Isobutane/n-Butenes Alkylation over Y-Zeolite Catalyst in CSTR, Fixed Bed and Circulating Flow Reactors

2020 ◽  
Vol 10 (1-2) ◽  
pp. 58-72
Author(s):  
D. A. Sladkovskiy ◽  
K. V. Semikin ◽  
A. V. Utemov ◽  
S. P. Fedorov ◽  
E. V. Sladkovskaya ◽  
...  
Keyword(s):  
Zeolite Catalyst ◽  
Fixed Bed ◽  
Y Zeolite ◽  
Flow Reactors

Hydrogen Production from Ethanol Steam Reforming: Fixed Bed Reactor Design

2008 ◽  
Vol 6 (1) ◽  
Author(s):  
Pablo Giunta ◽  
Norma Amadeo ◽  
Miguel Laborde
Keyword(s):  
Steam Reforming ◽  
Flow Model ◽  
Multicomponent Mixture ◽  
Plug Flow ◽  
Fixed Bed ◽  
Fixed Bed Reactor ◽  
Ethanol Steam Reforming ◽  
Heterogeneous Model ◽  
Ethanol Steam ◽  
Hydrogen Stream

The aim of this work is to design an ethanol steam reformer to produce a hydrogen stream capable of feeding a 60 kW PEM fuel cell applying the plug flow model, considering the presence of the catalyst bed (heterogeneous model). The Dusty-Gas Model is employed for the catalyst, since it better predicts the fluxes of a multicomponent mixture. Moreover, this model has shown to be computationally more robust than the Fickian Model. A power law-type kinetics was used. Results showed that it is possible to carry out the ethanol steam reforming in a compact device (1.66 x 10 -5 to 5.27 x 10 -5 m3). It was also observed that this process is determined by heat transfer.

Degradation of chlorophenols by biofilms on semi-permeable membranes in two types of fixed bed reactors

1995 ◽  
Vol 32 (8) ◽  
pp. 205-212 ◽  
Author(s):  
A. Wobus ◽  
S. Ulrich ◽  
I. Röske
Keyword(s):  
Continuous Flow ◽  
Plug Flow ◽  
Fixed Bed ◽  
Biofilm Reactor ◽  
Flow Conditions ◽  
Concentration Gradients ◽  
Batch Mode ◽  
Sequencing Batch Biofilm Reactor ◽  
Fixed Bed Reactors ◽  
Protozoan Community

Two identical fixed bed reactors containing gas-permeable tubings as carrier material were compared for the elimination of chlorophenols. Under plug flow conditions, the continuous flow operation resulted in a stratification of biomass due to concentration gradients. To achieve a homogeneous colonization, the sequencing batch mode has been applicated to one biofilm reactor (Sequencing Batch Biofilm Reactor - SBBR). Concentration gradients after filling, probably due to sorption phenomena, caused an uneven distribution of biomass in the SBBR. However, the colonization of the SBBR was more homogeneous as compared to the continuously operated reactor (CFBR). As to the elimination of a trichlorophenol (2,4,5-trichlorophenol - TCP), no significant differences between the SBBR and the CFBR were observed with regard to its sensitivity against load surges. It is to be supposed that sorption to the biofilm was included in the elimination of chlorophenols. A higher diversity of protozoan community and meiofauna is obviously to be attributed to continuous flow.

Earthworms as plug flow reactors: a first-order kinetic study on the gut of the vermicomposting earthworm Eudrilus eugeniae

2018 ◽  
Vol 25 (31) ◽  
pp. 31062-31070 ◽  
Author(s):  
Katheem Kiyasudeen ◽  
Mahamad Hakimi Ibrahim ◽  
Syahidah Akmal Muhammad ◽  
Sultan Ahmed Ismail ◽  
Fadzil Noor Gonawan ◽  
...  
Keyword(s):  
Kinetic Study ◽  
Plug Flow ◽  
Order Kinetic ◽  
Eudrilus Eugeniae ◽  
Flow Reactors ◽  
First Order

Comparative Study on the Kinetic Modeling of the Oxidative Coupling of Methane in Laboratory and Bench Scales

2008 ◽  
Vol 3 (1) ◽  
Author(s):  
Nakisa Yaghobi ◽  
Mir Hamid Reza Ghoreishy
Keyword(s):  
Kinetic Models ◽  
Oxidative Coupling ◽  
Consumption Rate ◽  
Linear Regression Analysis ◽  
Fixed Bed ◽  
Space Velocity ◽  
Oxidative Coupling Of Methane ◽  
Power Law Model ◽  
Fixed Bed Reactors ◽  
Rate Of Reaction

The aim of this work is to develop and compare kinetic models for the oxidative coupling of methane (OCM) based on the gas hourly space velocity (GHSV) value and CH4/O2 ratio in two scales: laboratory and bench. The experiments were carried out in tubular fixed bed reactors at 1023 K, using 0.7-1.5 g and 30 g of perovskite titanate as the reaction catalyst for laboratory and bench scales, respectively. The various GHSVs (8000, 12000, 17000 h-1) and (3400, 4300, 5200 h-1) and methane to oxygen ratios (1, 2, 3, 4, 7.5) and (2, 2.5, 3) were selected for laboratory and bench scales, respectively. We have proposed a mechanism in which the consumption rate of methane is always twice of production rate of C2. A power law model was assumed for rate of reaction in terms of partial pressure of oxygen and methane. Using a linear regression analysis, the kinetic models were determined. Comparison of the calculated rate of reaction with the experimentally measured data confirmed the accuracy and applicability of the developed model for both scales.

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