°Celsius: Cooling Active Carbon

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Posted in: , on 20. Dec. 2008 - 18:13

20 November 2008

Cooling active carbon from 850°C to 60°C without oxygen

°Celsius supplied a very innovative cooling screw to the company Desotec in Belgium. This screw heat exchanger allows active carbon to be cooled down from 850 °C to 60 °C avoiding oxygen to come near the product.

Desotec is specialised in purifying techniques for water and air on the basis of active carbon. They supply a total service for the renting of filters and the collection of saturated used carbon.

Active carbon is a microporous, inert carbon with a large internal surface (up to 1500 m/gram). This surface can adsorb organic molecules from liquids and gasses: the contaminated molecules attach themselves to the carbon.

The active carbon has no purifying effect anymore when it is saturated with organic contamination. But thanks to the recycling process that was developed by Desotec the same carbon can be reactivated and reused.

The saturated carbon is heated in an oven of 900 °C which gassifies the contamination in the pores of the active carbon. All this without oxygen so that the carbon becomes red-hot, but does not burn.

When the active carbon leaves the oven with a temperature of 850 °C it is necessary to cool it without being in contact with oxygen, because this would cause the glowing carbon to burn.

For this process °Celsius developed a screw heat exchanger which cools glowing carbon from 850 to 60 degrees in an environment that is poor in oxygen!

This screw heat exchanger is 7 meter long and has a capacity of 750 kg/hour.

The machine is cooled with water of 30ºC that heats up to 38ºC. A total of 270 kW of energy is drained off.

For more information, please visit:

https://edir.bulk-online.com/profile/10774-celsius.htm

http://www.google.com/search?hl=de&c...btnG=Suche&lr=

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