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Slurry bubble column reactors are intensively used as a multiphase reactor in the chemical, biochemical, and petrochemical industries for carrying out reactions and mass transfer operations in which a gas, made up of one or several reactive components, comes into contact or reacts with a liquid.

Hydrodynamics and mass transfer in slurry bubble columns .

Hydrodynamics and mass transfer in slurry bubble columns .

This ratio is independent of the operating pressure of the system and of the slurry concentration. The mass transfer coefficient is correlated to large gas bubble hold-up, small gas bubble hold-up, and gas velocity. AB - Slurry bubble columns (SBC) are widely used in the chemical industry as a multiphase reactor.

Three phase slurry reactors - Chaudhari - 1980 - AIChE .

Three phase slurry reactors - Chaudhari - 1980 - AIChE .

H. Hofmann, Reaction Engineering Problems in Slurry Reactors, Mass Transfer with Chemical Reaction in Multiphase Systems, 10.1007/978-94-015-6900-2, (844-870), (1983). Crossref Y. Serpemen, W.-D. Deckwer, Influence of Nonuniform Catalyst Distribution on the Performance of the Bubble Column Slurry Reactor, Mass Transfer with Chemical Reaction in .

HYDRODYNAMIC CHARACTERISTICS AND GAS-LIQUID MASS TRANSFER .

HYDRODYNAMIC CHARACTERISTICS AND GAS-LIQUID MASS TRANSFER .

Jan 20, 2011 · Fundamental characteristics of hydrodynamics and mass transfer have been measured in an air lift slurry reactor with a draft tube. The solid suspension capacity, i.e., the critical solid holdup, the gas holdup and the volumetric gas-liquid mass transfer coefficient were measured in the two draft tube columns of 0.1485 and 0.10 m in diameter.

Three phase slurry reactors - Chaudhari - 1980 - AIChE .

Three phase slurry reactors - Chaudhari - 1980 - AIChE .

H. Hofmann, Reaction Engineering Problems in Slurry Reactors, Mass Transfer with Chemical Reaction in Multiphase Systems, 10.1007/978-94-015-6900-2, (844-870), (1983). Crossref Y. Serpemen, W.-D. Deckwer, Influence of Nonuniform Catalyst Distribution on the Performance of the Bubble Column Slurry Reactor, Mass Transfer with Chemical Reaction in .

ChBE Seminar - Gas Conversion to Clean Liquid Fuels and .

ChBE Seminar - Gas Conversion to Clean Liquid Fuels and .

Therefore, slurry bubble column reactors operated in churn turbulent flow regimes are the reactor of choice since these reactors offer efficient heat removal, fast mass transfer, high conversion and high volumetric productivity when operated in the heterogeneous or churn turbulent regime. Due to complex interrelations among the many parameters .

Experimental Study of the Effect of Catalyst Properties on .

Experimental Study of the Effect of Catalyst Properties on .

Theinfluence of silica and activated carbon particlesconcentration up to 20% v/v on regime transition, averagegas holdup, mass transfer coefficient, and CO2 removalwas studied in a semi- batch slurry bubble column reactor(SBC) with a porous gas sparger. The effects ofhydrophobicity and surfactant were also investigated.

Progress Towards Modeling of Fischer Tropsch Synthesis in .

Progress Towards Modeling of Fischer Tropsch Synthesis in .

PROGRESS TOWARDS MODELING OF FISCHER TROPSCH SYNTHESIS IN A SLURRY BUBBLE COLUMN REACTOR Donna Post Guillen1, Tami Grimmett1, Anastasia M. Gribik1 and Steven P. Antal2 1 Idaho National Laboratory Idaho Falls, Idaho, 83415 USA, [email protected] 2 Interphase Dynamics, Ballston Lake, NY 12019 USA, [email protected] ABSTRACT This paper presents a .

Slurry Reactors 1 A list of symbols used in the text is .

Slurry Reactors 1 A list of symbols used in the text is .

Mar 15, 2008 · Mass Transfer in Slurry Reactors Volumetric Liquid‐Side Mass‐Transfer Coefficient ( k L a ) k L a in the Slurry Bubble Column

Bubble column reactor - Wikipedia

Bubble column reactor - Wikipedia

mass transfer parameters in a rectangular slurry bubble column reactor simulating the Fischer-Tropsch synthesis under actual conditions using Iraqi paraffin oil via hydrodynamics effect and their influence on superficial gas velocity and volumetric mass transfer coefficient. Experimental work

Effects of Sparger and Internals Designs on the Local .

Effects of Sparger and Internals Designs on the Local .

International Journal of Chemical Reactor Engineering 14(2):599–619), was used to predict the effects of spargers design and internals configuration on the local hydrodynamics and flow structure in a pilot-scale (0.3-m ID) and a large-scale (10-m ID) Slurry Bubble Column Reactors (SBCRs), operating under Fisher-Tropsch (F-T) process .

Oxygen Mass Transfer in the Albion ProcessTM: from the .

Oxygen Mass Transfer in the Albion ProcessTM: from the .

Oxygen mass transfer rate is one such parameter since this is a complex interaction of many factors including slurry temperature, solution and slurry chemistry, slurry viscosity, agitator type, dimensions and power, oxygen bubble residence time, oxygen purity, tank geometry and oxygen injection technique. Oxygen generation represents an .

Effects of Sparger and Internals Designs on the Local .

Effects of Sparger and Internals Designs on the Local .

International Journal of Chemical Reactor Engineering 14(2):599–619), was used to predict the effects of spargers design and internals configuration on the local hydrodynamics and flow structure in a pilot-scale (0.3-m ID) and a large-scale (10-m ID) Slurry Bubble Column Reactors (SBCRs), operating under Fisher-Tropsch (F-T) process .

Mass Transfer Characteristics of H2 and CO in Mimicked F-T .

Mass Transfer Characteristics of H2 and CO in Mimicked F-T .

reactor. However, the mass transfer characteristics in slurry bubble column reactors for F–T synthesis have not been fully studied or understood, only few relevant gas-liquid mass transfer data or equations for F–T synthesis system at industrial conditions are available so far. In the past decades, a number of studies have been performed on .

Intrinsic Hydrodynamic Investigation of Three-Phase Bubble .

Intrinsic Hydrodynamic Investigation of Three-Phase Bubble .

May 10, 2020 · A comprehensive experimental study of the hydrodynamic behaviors for the specific system of air/paraffin oil/silica particles in a slurry bubble column of 0.15 m diameter and 2.9 m length has been carried out. The effect of regime transition, solid concentrations, static liquid height, sparger type and related bubble size on gas holdup over a range of superficial gas velocities has been .

Effects of internals on fluid dynamics and reactions in .

Effects of internals on fluid dynamics and reactions in .

Abstract. Effects of internals on the fluid dynamics and reaction performance in a pilot-scale slurry bubble column reactor (dc = 0.29 m, h = 4 m) for Fischer-Tropsch synthesis were investigated by CFD simulation in two stages: the first stage with only fluid flow and the second stage coupled with flow, mass transfer and reaction.

Liquid−Solid Mass Transfer in Agitated Slurry Reactors and .

Liquid−Solid Mass Transfer in Agitated Slurry Reactors and .

The liquid−solid mass transfer rate is studied for two three-phase reactor configurations, a stirred reactor and a rotating solid foam reactor, using the dissolution of copper by potassium dichromate as a model reaction. For the stirred reactor consisting of a Rushton stirrer and a slurry with small particles, the particle density has a large influence on the liquid−solid mass transfer .

MATHEMATICAL MODELING OF FISCHER- TROPSCH SLURRY BUBBLE .

MATHEMATICAL MODELING OF FISCHER- TROPSCH SLURRY BUBBLE .

Three-phase slurry bubble column reactors are used in a wide variety of biological and chemical operations. This work is a comprehensive review of the mathematical modeling of such reactors for the Fischer-Tropsch (F-T)synthesis as applied to indirect coal liquefaction. The salient features of the F-T slurry bubble column reactors are described, and the fundamental mass transfer and kinetic .

Mass transfer in gas-liquid slurry reactors — University .

Mass transfer in gas-liquid slurry reactors — University .

A critical review is presented on the mass transfer characteristics of gas¿liquid slurry reactors. The recent findings on the influence of the presence of solid particles on the following mass transfer parameters in slurry reactors are discussed: volumetric gas¿liquid mass transfer coefficients (kLa, kGa), liquid-side mass transfer coefficients (kL and kS) and specific gas¿slurry contact .

Comparative Analysis of Models for Fischer-Tropsch .

Comparative Analysis of Models for Fischer-Tropsch .

that taller reactors, higher catalyst loadings and lower gas velocity leads to improved conversion. KEYWORDS –Fischer-Tropsch reaction, Gas to Liquid, Gas bubble sizes, Mass transfer, Slurry reactors. 1. Introduction. The Gas-to-Liquid (GTL) process involves methods and technologies used in converting natural gas and other

Mass transfer and hydrodynamics in catalytic slurry reactors

Mass transfer and hydrodynamics in catalytic slurry reactors

2 A model for enhanced mass transfer in slurry reactors by catalyst particles ad-hering to the gas-liquid interface 23 . (GIR), and a slurry bubble column reactor (SBC). Since the hydrody-namics of SBCs are complicated as illustrated by the enormous amount of research done,

MASS TRANSFER AND REACTION IN BUBBLE COLUMN SLURRY REACTOR .

MASS TRANSFER AND REACTION IN BUBBLE COLUMN SLURRY REACTOR .

Gas-liquid and liquid-solid mass transfer coefficients were obtained in a draft tube bubble column slurry reactor (abbreviated as DTBCSR) from the measurements of gas absorption and ion-exchange, respectively. Oxidation of sulfur dioxide on activated carbon was carried out in the same reactor. The effects of gas flowrates, diameters of draft tube and solid concentrations were investigated.

Bubble Column - an overview | ScienceDirect Topics

Bubble Column - an overview | ScienceDirect Topics

Kohei Ogawa, in Chemical Engineering, 2007. 1. Scope. The bubble column reactors represent contactors in which a gas or a mixture of gases is distributed in the liquid at the column bottom by an appropriate distributor and moves upwards in the form of bubbles causing intense mixing of the liquid phase. The aim of a bubble column is to control the rate of mass transfer and reaction between a .

Experimental Study of the Effect of Catalyst Properties on .

Experimental Study of the Effect of Catalyst Properties on .

parameters and mass transfer rate in a slurry reactor. The influence of silica and activated carbon particles concentration up to 20% v/v on regime transition, average gas holdup, mass transfer coefficient, and CO 2 removal was studied in a semi- batch slurry bubble column reactor (SBC) with a porous gas sparger. The effects of

Heat Transfer in a Slurry Bubble Column Reactor: A .

Heat Transfer in a Slurry Bubble Column Reactor: A .

Nov 01, 2011 · Studies of heat transfer in slurry bubble column reactors have been reviewed and observed differences analyzed based on available data. Heat transfer in these reactors is a strong function of some parameters and a weak function of others. The parameters significantly influencing heat transfer in these reactors are the superficial gas velocity, thermophysical .

Heat Transfer in a Slurry Bubble Column Reactor: A .

Heat Transfer in a Slurry Bubble Column Reactor: A .

Nov 01, 2011 · Studies of heat transfer in slurry bubble column reactors have been reviewed and observed differences analyzed based on available data. Heat transfer in these reactors is a strong function of some parameters and a weak function of others. The parameters significantly influencing heat transfer in these reactors are the superficial gas velocity, thermophysical properties of liquid and .

Studies and Investigations on Bubble Column Rectors: An .

Studies and Investigations on Bubble Column Rectors: An .

investigation on volumetric mass transfer coefficients in slurry bubble column reactor. [10] Their studies were concentrated on gas holdup, volumetric mass transfer and local mass transfer coefficients in a slurry bubble column. They used Iraqi paraffin oil as a liquid phase, alumina and silica particles as

Bubble and Heat Transfer Phenomena in Viscous Slurry .

Bubble and Heat Transfer Phenomena in Viscous Slurry .

Heat transfer and bubble phenomena were investigated by adopting the drift flux model in a viscous slurry bubble column reactor (SBCR), having a diameter of 0.0508 m(ID) and height 1.5 m. The effects of superficial gas velocity (0.002 -0.164 m/s), solid concentration (0 - 20 wt%) and liquid viscosity (paraffin oil; 16.9 mPa•s and squalane; 25.9 mPa•s) on the gas holdup and heat transfer .

Experimental Study of the Effect of Catalyst Properties on .

Experimental Study of the Effect of Catalyst Properties on .

Theinfluence of silica and activated carbon particlesconcentration up to 20% v/v on regime transition, averagegas holdup, mass transfer coefficient, and CO2 removalwas studied in a semi- batch slurry bubble column reactor(SBC) with a porous gas sparger. The effects ofhydrophobicity and surfactant were also investigated.

ChBE Seminar - Gas Conversion to Clean Liquid Fuels and .

ChBE Seminar - Gas Conversion to Clean Liquid Fuels and .

Therefore, slurry bubble column reactors operated in churn turbulent flow regimes are the reactor of choice since these reactors offer efficient heat removal, fast mass transfer, high conversion and high volumetric productivity when operated in the heterogeneous or churn turbulent regime. Due to complex interrelations among the many parameters .