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Study of fluidization or drying in fluidized bed: gas-solid

Study of fluidization or drying in fluidized bed: gas-solid

Product Code:GPC FL2


Need more Info? (514) 354-2511 - 1-800-463-4363

  • The unit is delivered complete with instrumentation, technical documentation, and instructions.
  • This unit allows one to monitor a drying aluminum powder with known humidity in a fluidized bed.
  • The frame equipped with wheels makes it easy to move the unit.
  • The chamber is made from borosilicate glass allowing observation of the process. (The option to use stainless steel for this container is also available.)
  • This unit is designed for various levels and fields of study.
  • The testing chamber consists of transparent materials and is easily opened to change the material.
     
UTILITIES
  • Electricity : 380 VAC Three-phased 50/60 Hz - 0.3 kW
  • Compressed air: 12 m3/h at 1 bar (14.5 psi) minimum
DIMENSIONS
  • Length: 1200 mm
  • Width: 450 mm
  • Height: 1500 mm
  • Weight: 85 kg

 

Application

Study of the behavior of various products in a fluidized bed.

  • Study of the rate of air flow and the pressure in a fixed or fluidized product.
  • Study of the heat transmission coefficient as a function of the superficial speed, the depth of immersion, and the size of the particles.

About the following of the drying operation:

  • Mass and heat balances
  • Using the humid air diagram (Mollier)
  • Determining head losses
  • Determining the rate of fluidization: kinetic computation

Specifications

1 & 3- Air network

  • Linear filter
  • Expansion valve
  • Adjusting needle gate
  • Two air flow rate measurement – small and large scale
  • Air exhausting filter
  • PVC expansion valve 0-3 bar (45 psi) with 1 upstream filter

2- Air drier and disoiler

  • Drying by adsorption
  • Cartridge of aluminum with activated aluminum
  • cartridge - silicagel

4- Air heater

  • Power 2000 W to 150 °C
  • Minimal flow rate 120 kg/h
  • Adjustable safety thermostat
  • Stainless steel heating elements

5- Testing tank

  • Borosilicate glass or 304 L stainless steel
  • Ø 300 mm
  • Capacity of the product: 5 L
  • Air distribution chamber on bellowed part
  • Air distributor
  • Easy opening

6- Differential manometer

  • Measurement of the pressure losses between the inlet and the outlet of the fluidization tank

7- Damming filter for particles

8- Solid-gas separating cyclone

  • 270 W
  • 48 L/ min at 7 bar (100 psi)
  • Capacity 10 L
  • Without oil
  • Borosilicate glass 9- Air compressor (option)

Instruments

  • Measurement of the pressure in the tank – adjustable in height
  • Measurement of the temperatures and the air humidity at the inlet and outlet of the tank
  • Adjustment of the temperature at the outlet of the heating element as a function of its power
  • 4 measurements of relative humidity at the inlets and outlets of the heating element and the tank
  • PID regulator for the air heating
  • 1 PT 100 probe at the outlet of the heater
     
RUNNING PRINCIPLE
  • After an expansion of the compressed air 1, the air is dried across a line cartridge 2 in order to improve future drying
  • Then the air is directed into an air heater 4: the outlet temperature is adjusted and the inlet and outlet humidity are controlled
  • The air comes (hot and dried) into the belt 5, it fluidizes the humid aluminum and dries it
  • The head losses as well as the inlet and outlet humidity of the tank 5 are controlled
  • The air leaves cooled and runs into a cyclone in order to return to the atmosphere, without dust
  • With all the transducers of the circuit, a heat and mass balance can be done, the humid air diagram will be used, the efficiency of the drying chamber will be computed…

 

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