Archives des Fluidization - Pignat.com https://pignat.com/en/product-category/educational-engineering/fluids-dynamics/fluidization-dynamic-fluids/ Mon, 15 Mar 2021 09:46:55 +0000 en-GB hourly 1 https://wordpress.org/?v=6.7.1 https://pignat.com/wp-content/uploads/2019/01/cropped-Favicon-1-32x32.png Archives des Fluidization - Pignat.com https://pignat.com/en/product-category/educational-engineering/fluids-dynamics/fluidization-dynamic-fluids/ 32 32 Solid-liquid fluidisation https://pignat.com/en/product/solid-liquid-fluidisation/ Tue, 16 Apr 2019 11:47:53 +0000 http://v2.pignat.com/?post_type=product&p=19573 Study the fluidisation with water of a bed of glass beads

 

GENERAL SPECIFICATIONS

  • Polyethylene tank with removable lid and draining valve.
  • Stainless steel centrifugal pump.
  • PVC column, length 1 m, packed with glass beads, SS support grid, quick dismantling, two pressure sets.
  • Bed support by SS grid.
  • Weir enabling water flowing outlet towards the tank 1, retention grid.
  • Piezometric tube with stainless steel 1 m graduated ruler, a hand pump for the pressure setting, draining valve and quick fitting connections.
  • PVC column, length 1 m, packed with glass beads, SS support grid, quick dismantling, two pressure sets.

 

Instruments

  • Flowmeters

 

Dim : 110 x 80 x 180 cm - 150 kg

 

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Study fluidisation

Analyse pressure drops as a function of water flow rate

Determine the minimum fluidisation speed:

experimentall

from empirical equations

Study the expansion of the bed

 

Study the influence of parameters on fluidisation

Column diameter

Glass bead diameter and density

Fluid flow rate

L’article Solid-liquid fluidisation est apparu en premier sur Pignat.com.

]]> Hydrodinamic column https://pignat.com/en/product/hydrodinamic-column/ Thu, 07 Mar 2019 16:04:23 +0000 http://v2.pignat.com/?post_type=product&p=18281 Hydrodynamic study of the three columns

 

GENERAL SPECIFICATIONS

  • Polyethylene tank with removable lid and draining valve.
  • Submerged pump, low level detector, isolating valve.
  • Bubble tray column, isolating valve.
  • Glass column, packing with glass Raschig rings, isolating valve.
  • Glass column packing with Multiknit, isolating valve.
  • Fan, by-pass valve. Pressure measurements.

Instrumentation

  • Air float rotameter.
  • Water float rotameter.
  • U piping.

 

Dim : 200 x 75 x 240 cm - 235 kg
SS tubular framework 40 x 40mm

 

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Comparative study of the three columns

Bubble tray column

Column packing with glass Raschig rings

Column packing with Multiknit

 

Study the hydrodynamics of three columns

Determine conditions of operation and overflow conditions

Determine the pressure drop

L’article Hydrodinamic column est apparu en premier sur Pignat.com.

]]> Gas solid fluidization https://pignat.com/en/product/gas-solid-fluidization/ Thu, 07 Mar 2019 15:50:32 +0000 http://v2.pignat.com/?post_type=product&p=18283 Study air fluidization of solid particles

Implement pneumatic transport of solids

GENERAL SPECIFICATIONS

  • Air feeding circuitry with filter, pressure reducing valve.
  • Air flow rate measurement with float rotameter.
  • Fluidization chamber in glass, with bronze retention grid and solid particles bed.
  • Glass cyclone.
  • Filter to collect light particles (filtering capacity : 50μm). Solid particles delivered with the unit : recrystallized alumina.

Instrumentation

  • 1 float rotameter.
  • Differential manometer with graduation.

 

Dim : 90 x 40 x 155 cm - 60 kg
Aluminum profile frame

 

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Study air fluidization of solid particles

Characterise the solid to be fluidized.

Apply experimental fluidization equations :

Define the ΔP graph for the fluidized bed as a function of air flow rate

Determine the minimum fluidization velocity

Influence of the height of the bed of particles

 

Understand the operation of a cyclone

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]]> Gas solid fluidization drying https://pignat.com/en/product/gas-solid-fluidization-drying/ Thu, 07 Mar 2019 14:17:18 +0000 http://v2.pignat.com/?post_type=product&p=18285 Study of the phenomena associated with the fluidization of solid particles in a stream of air

The kinetics of drying solid

GENERAL SPECIFICATIONS

  • Air feeding circuit with filter, pressure reducing valve and manometers, isolating valve.
  • PVC column with silica gel to dry air.
  • Air heating device equipped with an heating resistance with safety thermostat 90 °C.
  • Glass fluidization chamber with bronze fritted and solid particles bed.
  • Glass cyclone.
  • Piezometric tube with rule.

Instrumentation

  • 3 temperature probes Pt100Ω.
  • Flowmeter.
  • 2 Manometers.
  • Metal dial thermometer.
  • Moisture transmitter.

 

Dim : 125 x 55 x 155 cm - 70 kg
Aluminum profile frame

 

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The fluidization process

The study of heat transfer in a fluidized bed is an additional part of the Gas Solid Fluidization unit.

This additional equipment allows the characterization of heat exchanges.

We can measure the value of heat-transfer coefficient for different configurations of the bed of particles: fixed bed, fluidized bed and only air.

From a network of curves, we will plot the evolution of heat-transfer coefficient as a function of the air flow rate for a constant temperature of the filament.

This equipment can also define the criteria for fluidizing the alumina powder by monitoring the air flow and the pressure drop of the bed.

 

Study of the air fluidization of solid particles

Characterize the solid to be fluidized

Determine the minimum fluidization speed

 

Study of the drying of solid particles in a hot air stream

Apply the wet air graph

Determine the kinetic graphs for linear phase and diffusion phase drying

 

Study of the thermal convection coefficient (option)

Compare the thermal convection coefficient for various medium configurations: in air, in a bed

of fixed particles and in a bed of fluidized particles.

L’article Gas solid fluidization drying est apparu en premier sur Pignat.com.

]]> Combined fluidization https://pignat.com/en/product/combined-fluidization/ Thu, 07 Mar 2019 14:05:17 +0000 http://v2.pignat.com/?post_type=product&p=18287 Liquid-Solid  and Gas-Solid fluidization study

 

GENERAL SPECIFICATIONS

  • Compressed air feeding circuit: general isolating valve, pressure reducing valve isolating valve.
  • Gas-solid fluidization: glass column, evacuation jar, glass fritted support, two pressure ports, quick-closing clamp.
  • Differential manometer of liquid column, filling valve, draining valve and scale.
  • Water feeding circuit: general isolating valve, float flowmeter with setting valve.
  • Solid-liquid fluidization: glass column, evacuation jar, support: glass perforated plate, two pressure ports, quick-closing clamp, recovery filter at the outlet.

Instrumentation

  • Air flowmeter.
  • Water flowmeter.

 

Dim : 105 x 55 x 175 cm - 60 kg
SS tubular framework 40 x 40mm

 

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Theoretical and experimental study of fluidization

Porosity and expansion of bed, bubbling

Theoretically determination of the minimum fluidization velocity: Kozeny-Carman and Ergun equation

Experimentally determine the minimum fluidization speed

 

Study the influence of parameters on fluidization

 

Bed characteristics:

Particle diameter and density

Bed porosity and height.

Fluid characteristics:

Fluid flow rate and nature

L’article Combined fluidization est apparu en premier sur Pignat.com.

]]> Solid liquid fluidization https://pignat.com/en/product/solid-liquid-fluidization/ Thu, 07 Mar 2019 13:55:37 +0000 http://v2.pignat.com/?post_type=product&p=18289 Study the fluidization with water of a bed of glass beads

 

GENERAL SPECIFICATIONS

  • 100 L tank with removable lid.
  • SS centrifugal pump.
  • Glass column, packed.
  • ND 60 glass column, packed.
  • Glass column.
  • Set of valves: column selection and draining.

Instrumentation

  • 2 flowmeters.
  • Piezometric tube, a hand pump for the
    pressure setting, draining valve.

 

Dim : 160 x 90 x 190 cm - 150 kg
SS tubular framework 40 x 40mm

 

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Fluidization study

Determine experimentally the minimum fluidization speed

Study the expansion of the bed

Analyze pressure drops as a function of water flow rate

 

Study the influence of parameters on fluidization

Column diameter

Glass bead diameter and density

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