Gas absorption and stripping trainer school teaching equipment Heat Transfer Lab Equipment

SE400 Gas absorption and stripping trainer school teaching equipment Heat Transfer Lab Equipment

1. Description

Absorption is used to remove one or more gaseous components from a gas flow using a solvent.

First of all, a CO₂ and air gas mixture is produced. It is possible to adjust the mixing ratio using valves. The flow rates of the gas components are displayed.

A compressor delivers the gas mixture into the lower section of the absorption column. In the column, part of the CO₂ is separated in the counterflow with the solvent. Water is used as the solvent. The CO₂ is absorbed by the downward flowing water. To separate the absorbed CO₂, the charged water is then fed from the lower section of the absorption column into a desorption column. As the pressure is reduced and the temperature is increased, the solubility of the CO₂ falls. A heater heats the water. A water jet pump generates negative pressure in the desorption column and causes the CO₂ gas to be emitted from the water. A pump then delivers the regenerated solvent back into the absorption column.

The water temperature can be controlled. Flow rate, temperature and pressure are continuously measured. The two-section column is equipped with connections to determine the pressure losses. The pressure loss in the respective sections can be displayed via two U-tube manometers. To evaluate the success of the process, the trainer includes outlets for taking gas and liquid samples. The gas samples can be analysed using the hand-held measuring unit supplied.

1. Specification
2. separation of CO₂/air mixture by absorption in counterflow with water
3. production of gas mixture using CO₂from compressed gas cylinder and ambient air
4. adjustment of mixing ratio using valves
5. compressor for delivering the gas mixture into the absorption column
6. DURAN glass absorption column (packed bed) and desorption column
7. continuous solvent regeneration in circuit with desorption column under vacuum
8. 1 pump for desorption column and 1 pump for returning solvent to absorption column
9. water temperature control with heater and refrigeration system
10. refrigerant R513A, GWP: 631

III. Technical data

Absorption column

• height: 2x 750mm, inner diameter: 80mm

Desorption column

• height: 750mm, inner diameter: 80mm

2 pumps (absorption/desorption)

• flow rate: 17,5L/min
• head: 47m

1 pump (cooling)

• flow rate: 29L/min
• head: 1,4m

Compressor

• positive pressure: 2bar
• flow rate: 39L/min

Refrigeration capacity: 1432W at 5/32°C

Refrigerant: R513A, GWP: 631

• filling volume: 600g
• CO₂-equivalent: 0,4t

Measuring ranges

• flow rate:
  • 0,2…2,4Nm³/h (air)
  • 50…600L/h (solvent)
  • 0,4…5,4L/min (CO₂)
• temperature: 1x 0…80°C, 2x 0…60°C
• pressure: 1x 0…2,5bar, 1x -1…0,6bar
• differential pressure: 2x 0…250mmWC
• CO₂-content: 0…100vol%

230V, 50Hz, 1 phase
230V, 60Hz, 1 phase; 230V, 60Hz, 3 phases
UL/CSA optional

Dimensions and weight

LxWxH: 1920x790x2300mm
Weight: approx. 290kg

   Mod. ADS/EV 

 Framework of AISI 304 stainless steel with castors

• Column of borosilicate glass DN 80, H = 1000 mm, packed with Raschig rings
• Heat exchanger of borosilicate glass, with exchange surface of 0.5 m2, installed at the bottom of the column
• Feeding tank of AISI 304 stainless steel, with capacity of 30 l • Metering pump of AISI 316 stainless steel, Qmax = 270 l/h, including pneumatic actuator, that can be driven by a signal of 0.2 to 1 bar