Chemical engineering and food technology > Chemical engineering

HM 511 CONTINUOUS DISTILLATION

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This equipment demonstrates a process for separation of a mixture (one soluble in another) of two liquids of different boiling points.

The unit consists of reboiler, two distillation columns, condenser, reflux tank, top product tank, feed tanks with feed pump, feed preheater, bottom product tanks, measuring instruments, and other accessories.

An initial feed is added to the reboiler where the vapor with higher concentration of the lower boiling point component rises in the distillation column. The vapor leaves the top and is condensed in the condenser and collected in the reflux tank. Part of the condensate in the reflex tank is fed back to the top of the column where heat exchange is taken place with the rising vapor. This results in the vapor phase being richer in the lower boiling point component, and the liquid phase being richer in the higher boiling point component. The liquid phase moves down to the reboiler.

The feed is pumped from feed tanks, preheated in a preheater, before delivery to the distillation column. The feed is partially evaporated in the column on its way to the bottom where it is heated to boiling.

The hot mixture in the reboiler is rich in higher boiling point components is used to preheat the feed and collected in the bottom product tanks.

Two columns, sieve plate column and packed column with Rasching rings, can be interchanged simply by valve control. Lagging is provided for reboiler, sieve column, condenser, and preheater.

The unit is installed on a stainless steel frame.

Instruction manual is also included.

  • Comparison of sieve column and packed column performance in continuous operation.

  • Comparison with batch distillation.

  • Column efficiency vs boil up rate at total reflux.

  • Top product composition vs time at constant reflux ratio.

  • Manual control of reflux ratio.

  • Plate to plate temperature profiles.

  • Mass balance across the system.

  • Plate column
:  Stainless steel with a view port
 :  8 sieve plates, with a sampling point
  • Packed column
:  Borosilicate glass with Rachig rings
  • Reboiler
:  1
  • Heater
:  Adjustable
  • Maximum temperature
:  130oC
  •  Condenser
:  Shell and tube, stainless steel, water cooled
  • Preheater
:  Coiled in shell, stainless steel
  • Feed pump
:  400 mL/min
  • Vacuum pump       
:  1
  • Reagents
:  Methanol/water solution
  • Tanks
 
- Reflux tank:  1, Stainless steel
- Top product tank:  1, Stainless steel
- Feed tanks:  2, Stainless steel
- Bottom products tanks  :  1, Stainless steel
  • Measuring instruments
 
- Pressure drop across column:  Water manometer
- Cooling water flow rate:  Flow meter
- Feed flow rate:  Flow meter (Alcohol resistance)
- Reflux ratio  :  0 - 100%
- System pressure:  Pressure / vacuum gauge
- Sensors with digital display:  Temperatures
 :   Watt meter
  • Power supply  
:  220 V, 1 Ph, 50 Hz. Other power supply is available on request.
  • Net (unassembled) Shipping Dimensions WxLxH: 95 x 60 x 250 cm
  • Net Weight:  Approx. 80 kg
  • CF511-011A
Borosilicate glass with stainless steel sieve plates instead of stainless-steel sieve plate column.
  • CF511S  
Learning Software
                                       to support both online/offline training with data calculation and analysis by manual data entry from analog measuring instruments.
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