Autoclave based supercritical CO2 systems
Supercritical CO2 systems based on autoclave
Autoclave-based supercritical CO2 systems are used in many industrial and laboratory sectors. They are preferred because their horizontal arrangement allows the introduction of trays with trolleys on which the objects that need to be processed are horizontally positioned. The applications are the most varied: very delicately drying materials wet or immersed in liquid solutions, impregnating materials at high pressure, coloring fabrics and other applications in which the materials are large.
The internal diameter varies from 25 cm (1″) diameter for laboratory systems up to 1.8 m (6′) for industrial systems. The lid is moved manually for small systems or by electric motors in the case of industrial systems. The depth can be greater than 3 m (10′) to allow processing of long elements. The process is completely automatic and the pressures vary according to use.
2700 L autoclave based CO2 system
Autoclave based supercritical CO2 systems
Autoclave-based systems are designed for large raw materials or laboratory systems. They are used in aerospace and any other industry where large materials are processed.
In the case of drying, the materials can be immersed in their liquid or simply wet.
The pressure range varies from 80 to 120 bar, but most applications occur close to 100 bar. There are integrated controls for the flow rate of liquid CO2, gaseous CO2, the level of liquid CO2 in the autoclave and temperature sensors that monitor the pressures and temperatures of liquid and gaseous CO2, even during transitions. Vent systems at the end of the cycle programmable for up to 8 hours are also provided.
They are used in aerospace and any other industry where large materials are processed. They are used to dry particularly delicate materials such as aerogel, to impregnate materials such as wood or to dye fabrics without using water, the new frontier of the blue economy.
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