Multi_R_Designer Tutorial

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2) From Database, select Start new query . The Database: Trickle bed (1) dialog window is obtained.

3) The Database: Trickle bed (1) panel is divided in two sections, namely the Query index and the Search results table (Before interrogation, by default, the Search results table contains the list of all experimental results available in the integrated databank (20,506 data sets) and user databases (if applicable).

4) The Query index is divided in 11 categorized tabs containing important information relative to the experimental measurements. A query based on the following components can be performed.
 
FLUIDS: Makes a search based on the liquid and/or gas phase compositions.

OPERATING CONDITIONS: Contains information on operating pressure, temperature, liquid mass flow rate, gas mass flow rate, liquid superficial velocity and gas superficial velocity.

REACTOR: Contains information on the packing general characteristics (packing type, packing material, packing wettability, packing microporosity and packing nominal size) and the reactor properties (column type, column diameter, total bed height, active bed height, liquid distributor and gas distributor).

SOLID: Contains information on the packing physical and thermal properties (bed porosity, grain specific area, bed specific area, sphere diameter equivalent to volume, sphere diameter equivalent to surface area, effective particle diameter, sphericity factor, number of packing units per bed volume, thermal conductivity, heat capacity and volumetric thermal expansion).

LIQUID: Contains information on the liquid phase physical and thermal properties (density, viscosity, surface tension, diffusion coefficient, flow consistency index, flow behavior index, thermal conductivity, heat capacity and thermal diffusivity). The liquid foaming property defines whether the liquid is foamy or coalescent.

GAS: Contains information on the gas phase physical and thermal properties (density, viscosity, diffusion coefficient, thermal conductivity, heat capacity, saturated heat capacity, volumetric thermal expansion and thermal diffusivity).

HYDRODYNAMICS: Contains parameters as well as technical informations about trickle-bed reactor hydrodynamics. These parameters include the flow regime, pressure drop, liquid hold-up and liquid axial dispersion. A query can be executed on the following aspects.
 

Flow regime: Liquid superficial velocity at trickle/pulsing transition flow, Gas superficial velocity at trickle/pulsing transition flow, general flow regime, specific flow regime
Pressure drop: Total pressure drop, frictional pressure drop, gravitational pressure drop, pressure measurement technique
Liquid hold-up: Total liquid holdup, dynamic liquid holdup, static liquid holdup, liquid holdup measurement technique
Liquid axial dispersion: Liquid axial dispersion coefficient, liquid axial dispersion measurement technique, RTD model

Gas-to-liquid contact area: Liquid/Gas interfacial area, fraction of wetted area
Solid-to-liquid contact area: Liquid/Solid interfacial area, wetting efficiency
Gas-to-liquid mass transfer coefficients: Global gas-side volumetric mass transfer coefficient, Gas-side mass transfer coefficient, Liquid-side mass transfer coefficient
Solid-to-liquid mass transfer coefficients: Liquid-particle volumetric mass transfer coefficient, Liquid-particle mass transfer coefficient for partial wetting, liquid-particle mass transfer coefficient, global volumetric mass transfer coefficient at the reactor's wall, global mass transfer coefficient for partial wetting at the reactor's wall, mass transfer coefficient for partial wetting at the reactor's wall, mass transfer coefficient at the reactor's wall

5) In conjunction with the reference source list , the Search results table contains the data source references with the corresponding number of data fulfilling the query specifications.

Multi_R_Designer Tutorial