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In Gas Absorption Trainer With DCS Control trainer, an air CO2 mixture emulates the raw gas stream and CO2, the acid gas. The amine is regenerated and recycled through the process. The Gas Absorption Trainer With DCS Control is equipped with industry typical process measurement and control devices, providing a realistic training environment in which the students are exposed to many available technologies. The separation of gas mixtures and recovery of the components usually involves a regenerable absorbent. In the natural gas processing industry sulfur compounds and CO2 are removed by absorption by an aqueous amine solution. The trainer is controlled from a distributed control system.
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Comprises both wetted wall column and a deoxygenating column, a water tank, two water pumps, an air pump and an oxygen meter with two probes.
A floor standing apparatus, used for demonstration and determination of liquid film mass transfer coefficients.
The deoxygenating column is 1570mm long, 26mm internal diameter, and made of clear acrylic.
The wetted wall section is 900mm long, 32mm internal diameter, and made of glass.
The equipment is used to study absorption of oxygen from air into deoxygenated water, specific demonstrations include:
Calculation of liquid film mass transfer coefficient
Determination of the power law relationship
Variation of this coefficient with mass flow rate.
Absorption is used to remove one or more gaseous components from a gas flow using a solvent. The flow rates of the gas components are displayed. A compressor delivers the gas mixture into the lower section of the absorption column. First of all, a CO2 and air gas mixture is produced. Water is used as the solvent. The CO2 is absorbed by the downward flowing water. 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 the vacuum in the desorption column and causes the CO2 gas to be emitted from the water. To separate the absorbed CO2, the charged water is then fed from the lower section of the absorption column into a desorption column. It is possible to adjust the mixing ratio using valves. 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. In the column, part of the CO2 is separated in the counterflow with the solvent.
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Column working length is 1.4m x 80mm diameter, split into two sections.
An apparatus for teaching the principles of the absorption of gas into liquid, using a packed column.
Water flow can be used in either recycle or one-pass operation.
Column supplied with 10mm x 10mm Raschig rings as packing material, total volume 7 liters.
Two electronic pressure sensors measure the pressure drop across each half of the column.
An electronically controlled submersible pump provides a liquid flow of 1-10 l/min.
60l feed tank.
Electronic measurement of CO2 concentration in the air streams, measurements can be taken at the column inlet and outlet.
Sensor values displayed on an alpha-numeric display on the control console.
Centrifugal fan provides air flow up to 160 l/min.
Two electronic temperature sensors measure the air and liquid temperatures.
