Archives des Evaporation - Pignat.com https://pignat.com/en/product-category/educational-engineering/chemical-processing/evaporation-en/ Thu, 22 Jul 2021 13:38:00 +0000 en-GB hourly 1 https://wordpress.org/?v=6.7.2 https://pignat.com/wp-content/uploads/2019/01/cropped-Favicon-1-32x32.png Archives des Evaporation - Pignat.com https://pignat.com/en/product-category/educational-engineering/chemical-processing/evaporation-en/ 32 32 Controlled flash evaporator https://pignat.com/en/product/controlled-flash-evaporator/ Fri, 12 Apr 2019 09:07:24 +0000 http://v2.pignat.com/?post_type=product&p=19566 Study and operate a continuous flash evaporation process under reduced pressure

 

GENERAL SPECIFICATIONS

  • Polyethylene feeding tank.
  • Stainless steel centrifugal pump
  • Stainless steel mono-tube pre-heater.
  • Evaporator, glass, stainless steel condenser.
  • Shell and tube condenser.
  • Graduated glass receiver.
  • Stainless steel centrifugal pump, by-pass
  • Overheating exchanger
  • Cooling exchanger for steam condensate.
  • Graduated glass receiver.
  • Stainless steel centrifugal pump, draining valve.
  • Water circuitry.
  • Vacuum circuitry.
  • Steam circuit.

Instrumentation 

  • Nine Pt100Ω temperature probes.
  • Two manometers.
  • Two absolute pressure transmitters.
  • A relative pressure transmitters.
  • A differential pressure transmitters.
  • A level capacitive sensor.
  • A level ultrasonic sensor.
  • A float flowmeter.
  • A gear flowmeter.
  • A magnetic flow meter.

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Study of the different technologies used

 

Study of the control loops

Pressure, vacuum, flow rate, level and temperature

 

Operate the evaporation process on aqueous product

Start‐up and warm up procedure

Monitor production and analyses material and thermal balance

Quality control by monitoring product density

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]]> Single effect evaporator https://pignat.com/en/product/single-effect-evaporator-2/ Thu, 28 Feb 2019 15:45:23 +0000 http://v2.pignat.com/?post_type=product&p=18202 Continuous evaporation process

Under atmospheric or

Reduced pressure

GENERAL SPECIFICATIONS

  • Feeding tank.
  • Metering pump with flow control.
  • Glass shell evaporator, heated by SS inside tube.
  • Glass cyclone, pipe for natural circulation.
  • Glass graduated funnel and isolating valve.
  • 2 graduated glass vessels for concentrated solution and condensate.
  • Glass shell condenser, heating by SS inside coil at vacuum connection and isolating valve.
  • Vacuum pump, diaphragm PTFE.
  • Cooling circuit.

Instrumentation

  • Temperature probes Pt100Ω.
  • Flowmeter.
  • Vacuum gauges.
  • Manometer.

 

Dim : 170 x 70 x 210 cm - 150 kg
frame work inox 40 x 40mm

 

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The evaporation

The purpose of evaporation is to vaporize the solvent in order to enrich the solute in the solution.

At the end of the operation the substance recovered is known as the concentrate.

A conventional evaporator is heated by steam which condenses and transmits heat energy to the solution to be evaporated.

As this solution boils it in turn releases vapor which may:

– Either be condensed in a condenser, in which case the process is known as “single effect” evaporation.

– Or be used to heat another evaporator, in which case it is known as “multiple effect”.

In theory an unlimited number of evaporators may be associated in series in this way.

In industry evaporation is used to :

– Obtain crystallized sugar, concentrated milk, concentrated fruit juices, paper pulp.

 

Choose operating conditions and study their influence on the process

Reduced or atmospheric pressure

Feed rate and steam flow rate

 

Monitor the process

Thermal and material balance

Yield

 

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]]> Double effect evaporator https://pignat.com/en/product/double-effect-evaporator/ Thu, 28 Feb 2019 15:31:58 +0000 http://v2.pignat.com/?post_type=product&p=18200 Continuous concentration by double effect evaporation using 2 level of pressure:

1st stage at atmospheric pressure

2nd stage under vacuum

GENERAL SPECIFICATIONS

  • Feeding tank.
  • Metering pump.
  • Glass shell evaporator, internal SS tube.
  • SS refrigerant
  • Glass cyclone.
  • Solenoid valve.
  • 2 glass shell evaporator, internal SS tube.
  • Glass cyclone for vapor separation.
  • Glass graduated receiver with draining valve and vacuum connection.
  • Diaphragm vacuum pump, diaphragm PTFE.

Instrumentation

  • Temperature probes Pt100Ω.
  • Flowmeter.
  • Vacuum gauge.
  • Manometer.
  • Level sensor

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The evaporation

The purpose of evaporation is to vaporize the solvent in order to enrich the solute in the solution.

At the end of the operation the substance recovered is known as the concentrate.

A conventional evaporator is heated by steam which condenses and transmits heat energy to the solution to be evaporated.

As this solution boils it in turn releases vapor which may:

- Either be condensed in a condenser, in which case the process is known as “single effect” evaporation.

- Or be used to heat another evaporator, in which case it is known as “multiple effect”.

In theory an unlimited number of evaporators may be associated in series in this way.

In industry evaporation is used to :

- Obtain crystallized sugar, concentrated milk, concentrated fruit juices, paper pulp.

 

Observe the steps of the process

Evaporation and climbing phenomenon

Separation of a liquid-vapour mixture in a cyclone

Condensation

 

Choose operating conditions and study their influence

Reduced or atmospheric pressure

Feed rate and steam flow rate

Single or double effect

 

Monitor the process

Thermal and material balance

Yield

 

L’article Double effect evaporator est apparu en premier sur Pignat.com.

]]> Single effect evaporator https://pignat.com/en/product/single-effect-evaporator/ Wed, 27 Feb 2019 12:36:52 +0000 http://v2.pignat.com/?post_type=product&p=18164 Continuous concentration by evaporation under vacuum

Unit to put on table

GENERAL SPECIFICATIONS

  • Glass, graduated feeding vessel.
  • Evaporator glass shell, and
    internal steel heating element.
  • Glass cyclone.
  • 2 graduated glass receivers.
  • Condenser : glass shell and coil.
  • Diaphragm vacuum pump.
  • Vacuum circuit with vacuum regulator.
  • Heating group

Instrumentation

  • Digital thermometers.
  • Flowmeters
  • Vacuum gauge.

 

Dim : 120 x 70 x 115cm - 60 kg
SS framework 40 x 40mm

 

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Operating conditions influence

Working pressure

Initial solution concentration

Feeding flow rate

 

Process monitoring

Mass and thermal balances

 

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]]> Short path evaporator https://pignat.com/en/product/short-path-evaporator/ Wed, 27 Feb 2019 09:47:45 +0000 http://v2.pignat.com/?post_type=product&p=18161 Thin film operation

Unit to put on table

Design in glass

GENERAL SPECIFICATIONS

  • Short path evaporator, glass shell, double jacket.
  • Glass coil.
  • Feeding tank, liquid distributor.
  • Variable speed stirring, local display. PTFE pebbles. Integrated on/off.
  • Glass receivers.
  • Oil heating group.
  • Immersion cooler, cold power.
  • Sliding vane rotary vacuum pump, tight under vacuum.
  • Vacuum circuit with glass vacuum trap,
  • Solenoid valve.
  • Vacuum controller.
  • Cooling water circuit.

Instrumentation

  • Float flowmeters.
  • Vacuum transmitter.
  • Vacuum controller.

 

Dim : 130 x 60 x 114cm - 80 kg
SS tubular framework 40 x 40mm

 

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Influence of operating parameters

Feed rate

Working pressure

Stirring speed

 

Heat transfer coefficient determination

 

Mass balance

 

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