SYSTEM AND AUTOMATIC METHOD FOR EXTRACTION OF GASEOUS ATMOSPHERIC CONTAMINANTS WITH TOXIC PROPERTIES, WHICH ARE RETAINED IN POLYURETHANE FOAM (PUF) FILTERS

The present invention provides an automatic system for extraction of gaseous atmospheric contaminants (HAPs and PCBs) with toxic properties, which are retained in polyurethane foam (PUF) filters. The system comprises: an automatic extraction device, which makes it possible to extract the target chem...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	DOROCHESI FERNANDOIS, MARIO, CERECEDA BALIC, GABRIEL, CERECEDA BALIC, FRANCISCO
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	CLEANING CLEANING IN GENERAL DISPOSAL OF SOLID WASTE MAKING GRANULES OR PREFORMS PERFORMING OPERATIONS PREPARATION OR PRETREATMENT OF THE MATERIAL TO BESHAPED PREVENTION OF FOULING IN GENERAL RECLAMATION OF CONTAMINED SOIL SOIL RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIALCONTAINING PLASTICS TRANSPORTING WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Beschreibung
Zusammenfassung:	The present invention provides an automatic system for extraction of gaseous atmospheric contaminants (HAPs and PCBs) with toxic properties, which are retained in polyurethane foam (PUF) filters. The system comprises: an automatic extraction device, which makes it possible to extract the target chemical compounds, using a sequence of organic solvents in which the PUF has to be immersed, by means of an extraction process based on cycles of compression and decompression of the PUF; and a drying device that makes it possible to dry the clean PUFs from the previous process by means of entrainment of the solvent with ultrapure, gaseous, hot N 2 , thereby removing the solvent until the PUF is dry.