Verbundforschungsprojekt ADECOS

Test rig for CO₂ liquefaction at TU Dresden

Short description

Flue Gas Liquefaction Facility at TU Dresden

Test facility for flue gas drying and compression.
In connection with the Pulverised Fuel Combustion Test Facility, therefore a direct liquefaction and continous distillation in the 'oxyfuel' mode or filling of gas cylinders is possible.
Heated feed to avoid condensate.
Compressed air driven piston compressor for initial compression.
Additional filter road for dust removal.
Drying with a hollow fibre membrane module using compressed and dried air.
Compression by an electrical driven piston compressor.
Condensation by a double pipe heat exchanger with cocurrent or countercurrent principle.
Phase separator with inspection glass for separation of lower boiling residual gas.
Compressed air driven condensate pump for feeding the Rectification Column Test Facility or the gas cylinder stock.

Plant components
1: Crude gas inlet	7: Compressed air dryer
2: Initial Blower	8: Double pipe condenser
3: Filter road	9: Phase separator with inspection glass
4: Compensating reservoir	10: Condensate pump
5: Hollow fibre membrane module	11: Gas cylinder stock with electronic balance
6: High pressure compressor	12: Liquefied clean gas outlet

Datasheet

Raw gas volume flow:	5...10 m³/h
Raw gas inlet temperature:	120...220 °C
Discharge pressure:	40...80 bar infinitely variable
Condenser:	Double pipe: 6/12x1 mm Outlet temperature: ca. 1 °C (till -90 °C possible)
Material:	Stainless steel
Gas cylinder stock:	2x 50 l (separate filling possible)

Operation and measurements

System Control

All pressure levels required for the operation are manually adjustable by flow-control valves, pressure regulators or rather differential pressure regulators.
For safety reasons and control there are shut-off valves, pressure relief valves, thermometers as well as manometers between all main components.
Liquefaction pressure and temperature are set up by hand. The result can be supervised through an inspection glass.

For measurement data logging and analysis the facility has digital equipment for temperature as well as pressure measurement before and after every single component.
The gas analysis can take place after partial decompression of the product streams or in the lab using mobile sample containers.