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LABORATORY ATOMIZATION MP314S1

MP314S1

Pilot unit specificities

  • Industrial instrumentation

  • Made of AISI 316L stainless steel and borosilicate glass

  • Rigid process tubing


Principle

Drying by atomization consists feeding the liquid to dehydrate in a form of a thin spray to obtain a powdery solid.

The solution is injected through an atomisation nozzle, which produce a spray made of very little drops.

A very hot air flow evaporates the solvent and carries away the solid powder into a cyclone.

The cyclone separates the solid particles from the drying airflow, which goes back outside the pilot unit.

The solid is collected at the base of the cyclone in a glass receiver.


Teaching objectives

 

Experimental possibilities :

  • Atomization of a solution.

  • Influence of the drying air temperature.

  • Influence of the drying air flow rate.

  • Influence of the atomisation air flow rate.

  • Influence of the solution feeding flow rate.

     

Calculations :

  • Thermal balance.

  • Mass balance.

 

Technical specifications


EQUIPMENT :

  • Feed solution glass flask.

  • Feed solution variable flow rate peristaltic pump.

  • Drying air variable flow rate centrifugal fan, made of steel.

  • Drying hot air tunnel made of AISI 304L stainless steel equipped with a variable power heating resistance.

  • Atomization tower made of borosilicate glass with glass flask receiver.

  • Atomization nozzle with air feeding and jet pump cleaning system using cyclic air.

  • Air - solid separation using a borosilicate glass cyclone with glass flask receiver.

  • Outside pilot unit air duct.

     

INSTRUMENTATION :

  • Feeding air flow rate (located at the cold part) using the differential pressure measurement of an orifice plate and an electronic transducer.

  • Atomization air flow rate measurement using a float type flow meter and its adjustment needle valve (nozzle air feeding).

  • Jet pump cleaning solenoid valve of the atomization nozzle.

  • Temperature safety switch of the air heating resistance.

  • Electric cabinet including :

    • Drying air flow rate indicator.

    • Atomization tower temperature indicator using Pt100 Ω type sensor.

    • Drying air temperature controller.

    • Drying air fan variable speed driver.

    • Solution feeding pump variable speed driver.

    • Jet pump cleaning electronic timer of the atomization nozzle.

Option :

  • Two relative humidity measurement probes of the drying air inlet and outlet with two channel indicator.

 

Dimensions and weight

1.95 m x 0.7 m x 2.6 m ~ 150 kg.

 

Essential requirements

400 V / 50 Hz / Three-phase  : 8 kW.

Compressed air, 6 bar  : 5 Nm3/h

Vent system.

 

MP314S1

 

MP314S1