Gas Absorption/Desorption Column Apparatus | OperatiX – 12
The Gas Absorption/Desorption Column Apparatus OperatiX – 12 studies mass transfer between gas and liquid phases using a CO2/air mixture and water solvent. This Gas Absorption/Desorption Column Apparatus features a glass, Raschig-ring-packed absorption column paired with a vacuum-operated desorption column for solvent regeneration. It includes continuous pressure, temperature, and flow rate monitoring with liquid and gas sampling outlets. Optional accessories include a water chiller and DAQ software for data measurement and calculation.
The Gas Absorption/Desorption Column Apparatus OperatiX – 12 studies mass transfer from a gaseous phase to a liquid phase (absorption) and the reverse (desorption). This Gas Absorption/Desorption Column Apparatus uses a solvent to remove gaseous components from a gas flow through absorption and stripping. It processes a CO2 and air gas combination with adjustable mixing ratios.
Product Overview
The mass transfer from a gaseous phase to a liquid phase (absorption) and the reverse (desorption) can be studied using this absorption and stripping system.
Using a solvent, absorption is used to remove one or more gaseous components from a gas flow. A CO2 and air gas combination is first created. Utilizing valves, the mixing ratio can be changed. The display shows the gas component flow rates.
The gas mixture is delivered by a compressor into the absorption column’s lower part. A portion of the CO2 is separated in the column while flowing against the solvent. The solvent used is water. The water moving downwards absorbs the CO2. The charged water is then supplied from the lower part of the absorption column into a desorption column to separate the absorbed CO2.
The solubility of the CO2 decreases as the temperature rises and the pressure decreases. Water is heated using a heater. In the desorption column, a vacuum pump creates negative pressure, which causes the CO2 gas to escape from the water. The regenerated solvent is then pumped back into the absorption column.
Temperature of the water can be regulated. Pressure, temperature, and flow rate are all continuously monitored. The two-section column has connections that can be used to calculate pressure losses. Using two U-tube manometers, the pressure loss in the corresponding parts may be shown. The Gas Absorption/Desorption Column Apparatus has outlets for collecting liquid and gas samples so that the procedure’s effectiveness may be assessed. The samples of gas can be examined.
The comprehensive course materials outline the foundations and offer a step-by-step walkthrough of the experiments.
Gas Absorption/Desorption Column Apparatus OperatiX – 12, Technical Specifications
| Specification | Detail |
|---|---|
| Process | Absorption in counterflow with water for the separation of the CO2/air combination |
| Gas Mixture Production | Utilizing CO2 from compressed gas cylinders and outside air |
| Mixing Ratio | Valve-based adjustment |
| Gas Delivery | Compressor delivers gas mixture into the absorption column |
| Column Packing | Raschig rings packed inside a glass absorption column |
| Solvent Regeneration | Continuous, in vacuum-sealed circuit with desorption column |
| Absorption Column Pump | Separate pump |
| Hot Water Temperature | Heater-controlled |
| Cold Water Temperature | Chiller control (optional) |
Technical Data
Absorption Column
| Parameter | Value |
|---|---|
| Internal diameter | 100mm approx. |
| Height | 2x 750mm |
| Material | Glass |
Packing
| Parameter | Value |
|---|---|
| Type | Raschig ring |
| Material | Glass |
| Diameter | 10mm |
| Height | 10mm |
Feed Pump (absorption)
| Parameter | Value |
|---|---|
| Max. flow rate | 10L/min |
| Max. head | 10m |
Feed Tank
| Parameter | Value |
|---|---|
| Capacity | 50L |
| Heater | 500W |
For Air and CO2
| Parameter | Value |
|---|---|
| Type | Plate type |
| Material | Stainless steel |
Pressure Sensor
| Parameter | Value |
|---|---|
| Type | Differential |
| Range | -50~50kPa |
| Qty | 2 |
Measuring Ranges
| Parameter | Value |
|---|---|
| Air flow rate | Approx. 0.25~2.5m³/h |
| Solvent flow rate | 1~7lpm |
| CO2 flow rate | 0.1~1m³/h |
| Temperature | 3x -100~400°C |
| Pressure | 1x 0~2.5bar |
| Differential pressure | 2x -25~25kPa |
| CO2 concentration sensor | 0~99% |
Key Features
- Absorption Column: glass, 100mm internal diameter, 2x 750mm height
- Packing: Raschig rings, glass, 10mm diameter x 10mm height
- Gas Mixture: CO2 from compressed gas cylinders and outside air, valve-adjustable mixing ratio
- Solvent: water, continuously regenerated in a vacuum-sealed circuit with desorption column
- Temperature Control: heater-controlled hot water, optional chiller for cold water
- Pressure Monitoring: 2 differential pressure sensors, range -50~50kPa
- Sample Outlets: liquid and gas sample collection points included
- Feed Pump: 10L/min max. flow rate, 10m max. head
- Feed Tank: 50L capacity with 500W heater
- Software: optional DAQ software for measurement and calculation on this Gas Absorption/Desorption Column Apparatus
Experiments
- Investigation of the absorption process in a packed column for separating gas mixtures
- Calculating pressure losses throughout the column
- An operating diagram that depicts the absorption process
- Research into the factors that affect how well absorption works
Construction and Design
The Gas Absorption/Desorption Column Apparatus OperatiX – 12 is built around a glass absorption column, 100mm internal diameter, in two 750mm sections. The column is packed with glass Raschig rings, 10mm in diameter and 10mm in height. A compressor delivers the gas mixture into the lower part of the absorption column. A separate feed pump supplies solvent at a maximum flow rate of 10L/min and a maximum head of 10m. A 50L feed tank with a 500W heater supplies water to the system. Plate type, stainless steel units handle air and CO2. Two differential pressure sensors, ranged -50 to 50kPa, monitor pressure loss across the column sections. A desorption column, operating under vacuum, separates absorbed CO2 from the charged water for solvent regeneration. Outlets are provided for collecting liquid and gas samples.
Software
Software OperatiX – 12 (optional). DAQ software specially designed in National Instrument™, LABVIEW™ environment to measure and calculate the results of the apparatus. The software is optional; a set of electronic sensors is included when the software is used. The software can be run in any Windows™ environment.
Scope of Delivery
- 1 Experimental unit
- 1 Instruction manual
Optional Accessories
- Water Chiller, OperatiX-12-1:
- Compressor: max. positive pressure 1bar, max. flow rate 2m³/h
- Condenser: for feed water, shell and tube type, stainless steel material
Q: What is the Gas Absorption/Desorption Column Apparatus OperatiX – 12 used for?
A: It is used to study mass transfer from a gaseous phase to a liquid phase (absorption) and the reverse process (desorption), using a CO2/air gas mixture and water as the solvent.
Q: What packing material is used in the absorption column?
A: The absorption column is packed with glass Raschig rings, 10mm in diameter and 10mm in height.
Q: How is the CO2 separated from the solvent?
A: The charged water is supplied to a desorption column, where a vacuum pump creates negative pressure, causing the CO2 gas to escape from the water. The regenerated solvent is then pumped back into the absorption column.
Q: Is a water chiller available for this system?
A: Yes, a Water Chiller, model OperatiX-12-1, is available as a recommended optional accessory for cold water temperature control.
Q: Is data acquisition software available with this system?
A: Yes, Software OperatiX – 12 is available as an optional add-on, designed in National Instrument™ LABVIEW™ environment, and can run in any Windows™ environment.
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